./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 6b4ec56b 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_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/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_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN --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-6b4ec56 [2022-11-20 11:29:04,905 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:29:04,907 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:29:04,927 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:29:04,927 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:29:04,928 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:29:04,930 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:29:04,931 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:29:04,933 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:29:04,934 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:29:04,935 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:29:04,936 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:29:04,937 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:29:04,938 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:29:04,939 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:29:04,941 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:29:04,941 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:29:04,942 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:29:04,944 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:29:04,946 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:29:04,948 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:29:04,949 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:29:04,951 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:29:04,952 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:29:04,955 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:29:04,956 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:29:04,956 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:29:04,957 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:29:04,958 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:29:04,959 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:29:04,959 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:29:04,960 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:29:04,961 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:29:04,962 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:29:04,963 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:29:04,964 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:29:04,964 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:29:04,965 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:29:04,965 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:29:04,966 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:29:04,967 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:29:04,968 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-20 11:29:04,992 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:29:04,993 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:29:04,993 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:29:04,993 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:29:04,994 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:29:04,994 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:29:04,995 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:29:04,996 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:29:04,996 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:29:04,996 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:29:04,997 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:29:04,997 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 11:29:04,997 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:29:04,997 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:29:04,998 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:29:04,998 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-20 11:29:04,998 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-20 11:29:04,998 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-20 11:29:04,999 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:29:04,999 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 11:29:04,999 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:29:04,999 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:29:05,000 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:29:05,000 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:29:05,000 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:29:05,001 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:29:05,001 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:29:05,001 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:29:05,001 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:29:05,002 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:29:05,002 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b6787eb3a37902efa71d2cd0d9e143f31d9492f6d095b3afd518dba74579db5b [2022-11-20 11:29:05,305 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:29:05,342 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:29:05,345 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:29:05,348 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:29:05,349 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:29:05,350 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/ldv-memsafety/memleaks_test17_1-1.i [2022-11-20 11:29:08,578 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:29:08,902 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:29:08,903 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/sv-benchmarks/c/ldv-memsafety/memleaks_test17_1-1.i [2022-11-20 11:29:08,937 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/data/47718577a/265eff8569e84e8b893ab640a414454e/FLAG78abde7d6 [2022-11-20 11:29:08,956 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/data/47718577a/265eff8569e84e8b893ab640a414454e [2022-11-20 11:29:08,962 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:29:08,966 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:29:08,968 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:29:08,972 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:29:08,976 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:29:08,977 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:29:08" (1/1) ... [2022-11-20 11:29:08,978 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f2fc506 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:29:08, skipping insertion in model container [2022-11-20 11:29:08,978 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:29:08" (1/1) ... [2022-11-20 11:29:08,986 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:29:09,104 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:29:09,599 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:29:09,623 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) [2022-11-20 11:29:09,624 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@62a37643 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:29:09, skipping insertion in model container [2022-11-20 11:29:09,624 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:29:09,625 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-20 11:29:09,627 INFO L158 Benchmark]: Toolchain (without parser) took 659.83ms. Allocated memory is still 155.2MB. Free memory was 108.6MB in the beginning and 115.8MB in the end (delta: -7.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 11:29:09,627 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 107.0MB. Free memory is still 75.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:29:09,629 INFO L158 Benchmark]: CACSL2BoogieTranslator took 656.11ms. Allocated memory is still 155.2MB. Free memory was 108.6MB in the beginning and 115.8MB in the end (delta: -7.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 11:29:09,631 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 107.0MB. Free memory is still 75.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 656.11ms. Allocated memory is still 155.2MB. Free memory was 108.6MB in the beginning and 115.8MB in the end (delta: -7.2MB). Peak memory consumption was 2.1MB. 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_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/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_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN --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-6b4ec56 [2022-11-20 11:29:12,015 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:29:12,018 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:29:12,059 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:29:12,060 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:29:12,065 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:29:12,068 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:29:12,072 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:29:12,075 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:29:12,083 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:29:12,084 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:29:12,087 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:29:12,088 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:29:12,090 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:29:12,092 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:29:12,098 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:29:12,102 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:29:12,104 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:29:12,105 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:29:12,109 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:29:12,115 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:29:12,116 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:29:12,120 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:29:12,121 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:29:12,125 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:29:12,128 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:29:12,128 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:29:12,129 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:29:12,131 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:29:12,133 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:29:12,134 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:29:12,135 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:29:12,137 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:29:12,138 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:29:12,139 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:29:12,139 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:29:12,140 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:29:12,140 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:29:12,141 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:29:12,142 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:29:12,142 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:29:12,143 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-20 11:29:12,169 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:29:12,170 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:29:12,170 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:29:12,170 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:29:12,171 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:29:12,171 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:29:12,172 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:29:12,172 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:29:12,172 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:29:12,172 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:29:12,173 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:29:12,173 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 11:29:12,173 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:29:12,173 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:29:12,174 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:29:12,174 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-20 11:29:12,174 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-20 11:29:12,174 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-20 11:29:12,174 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:29:12,175 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 11:29:12,175 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 11:29:12,175 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 11:29:12,175 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:29:12,175 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:29:12,176 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:29:12,176 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:29:12,176 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:29:12,176 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:29:12,177 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:29:12,177 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:29:12,177 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-20 11:29:12,177 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 11:29:12,177 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 11:29:12,178 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b6787eb3a37902efa71d2cd0d9e143f31d9492f6d095b3afd518dba74579db5b [2022-11-20 11:29:12,559 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:29:12,600 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:29:12,603 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:29:12,604 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:29:12,607 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:29:12,609 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/ldv-memsafety/memleaks_test17_1-1.i [2022-11-20 11:29:15,674 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:29:16,001 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:29:16,002 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/sv-benchmarks/c/ldv-memsafety/memleaks_test17_1-1.i [2022-11-20 11:29:16,015 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/data/443bb0893/db1010d3c1bd4b1a8415f36a93cc0cc8/FLAG4f24b92ed [2022-11-20 11:29:16,032 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/data/443bb0893/db1010d3c1bd4b1a8415f36a93cc0cc8 [2022-11-20 11:29:16,035 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:29:16,037 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:29:16,039 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:29:16,039 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:29:16,042 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:29:16,043 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:29:16" (1/1) ... [2022-11-20 11:29:16,045 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40334c0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:29:16, skipping insertion in model container [2022-11-20 11:29:16,045 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:29:16" (1/1) ... [2022-11-20 11:29:16,053 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:29:16,089 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:29:16,509 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:29:16,551 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-20 11:29:16,570 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:29:16,689 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:29:16,704 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:29:16,786 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:29:16,843 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:29:16,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:29:16 WrapperNode [2022-11-20 11:29:16,844 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:29:16,845 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:29:16,846 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:29:16,846 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:29:16,854 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:29:16" (1/1) ... [2022-11-20 11:29:16,888 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:29:16" (1/1) ... [2022-11-20 11:29:16,927 INFO L138 Inliner]: procedures = 167, calls = 78, calls flagged for inlining = 23, calls inlined = 5, statements flattened = 85 [2022-11-20 11:29:16,930 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:29:16,932 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:29:16,932 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:29:16,932 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:29:16,942 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:29:16" (1/1) ... [2022-11-20 11:29:16,943 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:29:16" (1/1) ... [2022-11-20 11:29:16,959 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:29:16" (1/1) ... [2022-11-20 11:29:16,972 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:29:16" (1/1) ... [2022-11-20 11:29:16,978 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:29:16" (1/1) ... [2022-11-20 11:29:16,982 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:29:16" (1/1) ... [2022-11-20 11:29:16,984 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:29:16" (1/1) ... [2022-11-20 11:29:16,985 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:29:16" (1/1) ... [2022-11-20 11:29:17,004 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:29:17,005 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:29:17,005 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:29:17,005 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:29:17,006 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:29:16" (1/1) ... [2022-11-20 11:29:17,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:29:17,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:29:17,040 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:29:17,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:29:17,088 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-20 11:29:17,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-20 11:29:17,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 11:29:17,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:29:17,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 11:29:17,088 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 11:29:17,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:29:17,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 11:29:17,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:29:17,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:29:17,221 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:29:17,224 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:29:17,753 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:29:17,760 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:29:17,760 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-20 11:29:17,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:29:17 BoogieIcfgContainer [2022-11-20 11:29:17,762 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:29:17,765 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:29:17,765 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:29:17,768 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:29:17,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:29:16" (1/3) ... [2022-11-20 11:29:17,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7264d486 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:29:17, skipping insertion in model container [2022-11-20 11:29:17,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:29:16" (2/3) ... [2022-11-20 11:29:17,770 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7264d486 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:29:17, skipping insertion in model container [2022-11-20 11:29:17,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:29:17" (3/3) ... [2022-11-20 11:29:17,771 INFO L112 eAbstractionObserver]: Analyzing ICFG memleaks_test17_1-1.i [2022-11-20 11:29:17,792 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:29:17,792 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2022-11-20 11:29:17,839 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:29:17,846 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1d3c47fa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:29:17,846 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-11-20 11:29:17,851 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) [2022-11-20 11:29:17,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 11:29:17,859 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:29:17,860 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:29:17,860 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)] === [2022-11-20 11:29:17,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:29:17,866 INFO L85 PathProgramCache]: Analyzing trace with hash 67903625, now seen corresponding path program 1 times [2022-11-20 11:29:17,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:29:17,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1801476887] [2022-11-20 11:29:17,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:29:17,880 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 [2022-11-20 11:29:17,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:29:17,886 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 11:29:17,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 11:29:18,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:29:18,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:29:18,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:29:18,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:29:18,143 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:29:18,144 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:29:18,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1801476887] [2022-11-20 11:29:18,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1801476887] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:29:18,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:29:18,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:29:18,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568123306] [2022-11-20 11:29:18,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:29:18,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:29:18,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:29:18,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:29:18,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:29:18,213 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) [2022-11-20 11:29:18,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:29:18,364 INFO L93 Difference]: Finished difference Result 111 states and 125 transitions. [2022-11-20 11:29:18,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:29:18,370 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 [2022-11-20 11:29:18,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:29:18,381 INFO L225 Difference]: With dead ends: 111 [2022-11-20 11:29:18,381 INFO L226 Difference]: Without dead ends: 107 [2022-11-20 11:29:18,384 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 [2022-11-20 11:29:18,399 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 53 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2022-11-20 11:29:18,400 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] [2022-11-20 11:29:18,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-11-20 11:29:18,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 60. [2022-11-20 11:29:18,458 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) [2022-11-20 11:29:18,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 68 transitions. [2022-11-20 11:29:18,465 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 68 transitions. Word has length 11 [2022-11-20 11:29:18,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:29:18,465 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 68 transitions. [2022-11-20 11:29:18,466 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) [2022-11-20 11:29:18,466 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 68 transitions. [2022-11-20 11:29:18,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 11:29:18,468 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:29:18,468 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:29:18,483 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 11:29:18,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 11:29:18,680 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)] === [2022-11-20 11:29:18,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:29:18,681 INFO L85 PathProgramCache]: Analyzing trace with hash 67902731, now seen corresponding path program 1 times [2022-11-20 11:29:18,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:29:18,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1617618111] [2022-11-20 11:29:18,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:29:18,686 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 [2022-11-20 11:29:18,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:29:18,687 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 11:29:18,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 11:29:18,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:29:18,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:29:18,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:29:18,823 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 [2022-11-20 11:29:18,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:29:18,893 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:29:18,893 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:29:18,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1617618111] [2022-11-20 11:29:18,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1617618111] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:29:18,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:29:18,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:29:18,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689212276] [2022-11-20 11:29:18,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:29:18,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:29:18,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:29:18,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:29:18,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:29:18,897 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) [2022-11-20 11:29:19,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:29:19,113 INFO L93 Difference]: Finished difference Result 82 states and 94 transitions. [2022-11-20 11:29:19,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:29:19,114 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 [2022-11-20 11:29:19,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:29:19,115 INFO L225 Difference]: With dead ends: 82 [2022-11-20 11:29:19,115 INFO L226 Difference]: Without dead ends: 82 [2022-11-20 11:29:19,116 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 [2022-11-20 11:29:19,117 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 22 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:29:19,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 166 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 11:29:19,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2022-11-20 11:29:19,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 62. [2022-11-20 11:29:19,124 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) [2022-11-20 11:29:19,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 72 transitions. [2022-11-20 11:29:19,125 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 72 transitions. Word has length 11 [2022-11-20 11:29:19,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:29:19,125 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 72 transitions. [2022-11-20 11:29:19,126 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) [2022-11-20 11:29:19,126 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 72 transitions. [2022-11-20 11:29:19,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 11:29:19,130 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:29:19,130 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:29:19,138 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/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)] Forceful destruction successful, exit code 0 [2022-11-20 11:29:19,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 11:29:19,335 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)] === [2022-11-20 11:29:19,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:29:19,336 INFO L85 PathProgramCache]: Analyzing trace with hash 67902732, now seen corresponding path program 1 times [2022-11-20 11:29:19,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:29:19,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1421685703] [2022-11-20 11:29:19,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:29:19,337 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 [2022-11-20 11:29:19,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:29:19,338 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 11:29:19,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 11:29:19,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:29:19,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 11:29:19,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:29:19,466 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 [2022-11-20 11:29:19,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:29:19,619 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:29:19,619 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:29:19,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1421685703] [2022-11-20 11:29:19,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1421685703] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:29:19,620 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:29:19,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:29:19,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822373467] [2022-11-20 11:29:19,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:29:19,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:29:19,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:29:19,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:29:19,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:29:19,623 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) [2022-11-20 11:29:20,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:29:20,037 INFO L93 Difference]: Finished difference Result 89 states and 103 transitions. [2022-11-20 11:29:20,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:29:20,038 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 [2022-11-20 11:29:20,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:29:20,039 INFO L225 Difference]: With dead ends: 89 [2022-11-20 11:29:20,039 INFO L226 Difference]: Without dead ends: 89 [2022-11-20 11:29:20,040 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 [2022-11-20 11:29:20,041 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 91 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 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, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:29:20,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 341 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 11:29:20,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-11-20 11:29:20,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 64. [2022-11-20 11:29:20,048 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) [2022-11-20 11:29:20,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 74 transitions. [2022-11-20 11:29:20,049 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 74 transitions. Word has length 11 [2022-11-20 11:29:20,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:29:20,049 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 74 transitions. [2022-11-20 11:29:20,050 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) [2022-11-20 11:29:20,050 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 74 transitions. [2022-11-20 11:29:20,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 11:29:20,050 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:29:20,050 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:29:20,067 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/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)] Forceful destruction successful, exit code 0 [2022-11-20 11:29:20,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 11:29:20,262 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)] === [2022-11-20 11:29:20,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:29:20,271 INFO L85 PathProgramCache]: Analyzing trace with hash 955407306, now seen corresponding path program 1 times [2022-11-20 11:29:20,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:29:20,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1343248954] [2022-11-20 11:29:20,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:29:20,272 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 [2022-11-20 11:29:20,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:29:20,273 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 11:29:20,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 11:29:20,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:29:20,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:29:20,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:29:20,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:29:20,372 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:29:20,373 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:29:20,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1343248954] [2022-11-20 11:29:20,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1343248954] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:29:20,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:29:20,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:29:20,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125894370] [2022-11-20 11:29:20,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:29:20,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:29:20,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:29:20,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:29:20,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:29:20,375 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) [2022-11-20 11:29:20,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:29:20,536 INFO L93 Difference]: Finished difference Result 104 states and 120 transitions. [2022-11-20 11:29:20,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:29:20,536 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 [2022-11-20 11:29:20,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:29:20,537 INFO L225 Difference]: With dead ends: 104 [2022-11-20 11:29:20,538 INFO L226 Difference]: Without dead ends: 101 [2022-11-20 11:29:20,538 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 [2022-11-20 11:29:20,539 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 [2022-11-20 11:29:20,540 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] [2022-11-20 11:29:20,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-11-20 11:29:20,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 80. [2022-11-20 11:29:20,547 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) [2022-11-20 11:29:20,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 98 transitions. [2022-11-20 11:29:20,548 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 98 transitions. Word has length 11 [2022-11-20 11:29:20,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:29:20,548 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 98 transitions. [2022-11-20 11:29:20,548 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) [2022-11-20 11:29:20,549 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 98 transitions. [2022-11-20 11:29:20,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 11:29:20,549 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:29:20,549 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:29:20,562 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/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)] Forceful destruction successful, exit code 0 [2022-11-20 11:29:20,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 11:29:20,759 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)] === [2022-11-20 11:29:20,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:29:20,760 INFO L85 PathProgramCache]: Analyzing trace with hash 955406412, now seen corresponding path program 1 times [2022-11-20 11:29:20,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:29:20,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1346384697] [2022-11-20 11:29:20,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:29:20,761 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 [2022-11-20 11:29:20,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:29:20,762 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 11:29:20,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 11:29:20,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:29:20,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 11:29:20,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:29:20,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:29:20,911 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:29:20,912 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:29:20,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1346384697] [2022-11-20 11:29:20,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1346384697] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:29:20,912 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:29:20,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:29:20,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605060336] [2022-11-20 11:29:20,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:29:20,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:29:20,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:29:20,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:29:20,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:29:20,918 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) [2022-11-20 11:29:20,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:29:20,960 INFO L93 Difference]: Finished difference Result 61 states and 67 transitions. [2022-11-20 11:29:20,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:29:20,961 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 [2022-11-20 11:29:20,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:29:20,962 INFO L225 Difference]: With dead ends: 61 [2022-11-20 11:29:20,964 INFO L226 Difference]: Without dead ends: 59 [2022-11-20 11:29:20,964 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 [2022-11-20 11:29:20,965 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 [2022-11-20 11:29:20,969 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] [2022-11-20 11:29:20,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-11-20 11:29:20,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2022-11-20 11:29:20,979 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) [2022-11-20 11:29:20,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 65 transitions. [2022-11-20 11:29:20,981 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 65 transitions. Word has length 11 [2022-11-20 11:29:20,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:29:20,981 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 65 transitions. [2022-11-20 11:29:20,982 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) [2022-11-20 11:29:20,982 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 65 transitions. [2022-11-20 11:29:20,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-20 11:29:20,983 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:29:20,983 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:29:20,999 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/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)] Forceful destruction successful, exit code 0 [2022-11-20 11:29:21,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 11:29:21,194 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)] === [2022-11-20 11:29:21,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:29:21,195 INFO L85 PathProgramCache]: Analyzing trace with hash -39339339, now seen corresponding path program 1 times [2022-11-20 11:29:21,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:29:21,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1874955520] [2022-11-20 11:29:21,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:29:21,195 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 [2022-11-20 11:29:21,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:29:21,197 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 11:29:21,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 11:29:21,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:29:21,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-20 11:29:21,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:29:21,290 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 [2022-11-20 11:29:21,486 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:29:21,486 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:29:22,399 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:29:22,399 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:29:22,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1874955520] [2022-11-20 11:29:22,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1874955520] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:29:22,400 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:29:22,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2022-11-20 11:29:22,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648580076] [2022-11-20 11:29:22,401 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:29:22,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 11:29:22,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:29:22,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 11:29:22,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:29:22,402 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) [2022-11-20 11:29:23,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:29:23,456 INFO L93 Difference]: Finished difference Result 127 states and 144 transitions. [2022-11-20 11:29:23,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 11:29:23,458 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 [2022-11-20 11:29:23,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:29:23,459 INFO L225 Difference]: With dead ends: 127 [2022-11-20 11:29:23,459 INFO L226 Difference]: Without dead ends: 127 [2022-11-20 11:29:23,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2022-11-20 11:29:23,461 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 277 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 61 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 11:29:23,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 391 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 191 Invalid, 0 Unknown, 61 Unchecked, 0.7s Time] [2022-11-20 11:29:23,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2022-11-20 11:29:23,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 68. [2022-11-20 11:29:23,467 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) [2022-11-20 11:29:23,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 76 transitions. [2022-11-20 11:29:23,468 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 76 transitions. Word has length 14 [2022-11-20 11:29:23,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:29:23,469 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 76 transitions. [2022-11-20 11:29:23,469 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) [2022-11-20 11:29:23,469 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 76 transitions. [2022-11-20 11:29:23,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-20 11:29:23,470 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:29:23,471 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:29:23,483 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/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)] Forceful destruction successful, exit code 0 [2022-11-20 11:29:23,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 11:29:23,683 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)] === [2022-11-20 11:29:23,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:29:23,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1216843566, now seen corresponding path program 1 times [2022-11-20 11:29:23,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:29:23,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1490805863] [2022-11-20 11:29:23,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:29:23,684 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 [2022-11-20 11:29:23,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:29:23,685 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 11:29:23,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 11:29:23,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:29:23,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:29:23,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:29:23,874 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:29:23,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:29:24,007 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:29:24,008 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:29:24,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1490805863] [2022-11-20 11:29:24,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1490805863] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:29:24,008 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:29:24,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-11-20 11:29:24,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399628817] [2022-11-20 11:29:24,008 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:29:24,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:29:24,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:29:24,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:29:24,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:29:24,010 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) [2022-11-20 11:29:24,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:29:24,240 INFO L93 Difference]: Finished difference Result 74 states and 80 transitions. [2022-11-20 11:29:24,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:29:24,241 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 [2022-11-20 11:29:24,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:29:24,242 INFO L225 Difference]: With dead ends: 74 [2022-11-20 11:29:24,242 INFO L226 Difference]: Without dead ends: 74 [2022-11-20 11:29:24,243 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 [2022-11-20 11:29:24,244 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 149 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:29:24,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 207 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:29:24,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-11-20 11:29:24,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2022-11-20 11:29:24,249 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) [2022-11-20 11:29:24,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 80 transitions. [2022-11-20 11:29:24,249 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 80 transitions. Word has length 22 [2022-11-20 11:29:24,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:29:24,250 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 80 transitions. [2022-11-20 11:29:24,250 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) [2022-11-20 11:29:24,250 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 80 transitions. [2022-11-20 11:29:24,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-20 11:29:24,251 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:29:24,251 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:29:24,262 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/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)] Forceful destruction successful, exit code 0 [2022-11-20 11:29:24,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 11:29:24,462 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)] === [2022-11-20 11:29:24,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:29:24,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1294433228, now seen corresponding path program 2 times [2022-11-20 11:29:24,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:29:24,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1071419815] [2022-11-20 11:29:24,463 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:29:24,463 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 [2022-11-20 11:29:24,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:29:24,464 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 11:29:24,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 11:29:24,555 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:29:24,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:29:24,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 11:29:24,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:29:24,595 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 [2022-11-20 11:29:25,067 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:29:25,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:29:27,077 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:29:27,077 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:29:27,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1071419815] [2022-11-20 11:29:27,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1071419815] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:29:27,078 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:29:27,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2022-11-20 11:29:27,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840454084] [2022-11-20 11:29:27,078 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:29:27,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-20 11:29:27,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:29:27,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-20 11:29:27,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2022-11-20 11:29:27,080 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) [2022-11-20 11:29:30,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:29:30,896 INFO L93 Difference]: Finished difference Result 105 states and 118 transitions. [2022-11-20 11:29:30,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-20 11:29:30,897 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 [2022-11-20 11:29:30,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:29:30,898 INFO L225 Difference]: With dead ends: 105 [2022-11-20 11:29:30,898 INFO L226 Difference]: Without dead ends: 105 [2022-11-20 11:29:30,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=299, Invalid=891, Unknown=0, NotChecked=0, Total=1190 [2022-11-20 11:29:30,899 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 296 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 511 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 69 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:29:30,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 511 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 338 Invalid, 0 Unknown, 69 Unchecked, 1.2s Time] [2022-11-20 11:29:30,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-11-20 11:29:30,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 86. [2022-11-20 11:29:30,907 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) [2022-11-20 11:29:30,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 96 transitions. [2022-11-20 11:29:30,908 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 96 transitions. Word has length 23 [2022-11-20 11:29:30,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:29:30,908 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 96 transitions. [2022-11-20 11:29:30,909 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) [2022-11-20 11:29:30,909 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 96 transitions. [2022-11-20 11:29:30,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-20 11:29:30,910 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:29:30,910 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:29:30,927 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 11:29:31,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 11:29:31,123 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)] === [2022-11-20 11:29:31,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:29:31,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1064458770, now seen corresponding path program 2 times [2022-11-20 11:29:31,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:29:31,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [59714930] [2022-11-20 11:29:31,124 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:29:31,124 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 [2022-11-20 11:29:31,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:29:31,125 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 11:29:31,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 11:29:31,200 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 11:29:31,200 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:29:31,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:29:31,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:29:31,273 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-11-20 11:29:31,274 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:29:31,274 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:29:31,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [59714930] [2022-11-20 11:29:31,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [59714930] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:29:31,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:29:31,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:29:31,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538714189] [2022-11-20 11:29:31,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:29:31,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:29:31,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:29:31,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:29:31,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:29:31,276 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) [2022-11-20 11:29:31,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:29:31,347 INFO L93 Difference]: Finished difference Result 126 states and 140 transitions. [2022-11-20 11:29:31,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:29:31,348 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 [2022-11-20 11:29:31,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:29:31,349 INFO L225 Difference]: With dead ends: 126 [2022-11-20 11:29:31,349 INFO L226 Difference]: Without dead ends: 126 [2022-11-20 11:29:31,349 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 [2022-11-20 11:29:31,350 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 126 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:29:31,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 109 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:29:31,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-11-20 11:29:31,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 87. [2022-11-20 11:29:31,356 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) [2022-11-20 11:29:31,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 97 transitions. [2022-11-20 11:29:31,357 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 97 transitions. Word has length 34 [2022-11-20 11:29:31,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:29:31,357 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 97 transitions. [2022-11-20 11:29:31,357 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) [2022-11-20 11:29:31,358 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 97 transitions. [2022-11-20 11:29:31,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-20 11:29:31,358 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:29:31,359 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] [2022-11-20 11:29:31,374 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/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)] Ended with exit code 0 [2022-11-20 11:29:31,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 11:29:31,570 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)] === [2022-11-20 11:29:31,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:29:31,570 INFO L85 PathProgramCache]: Analyzing trace with hash 391656853, now seen corresponding path program 1 times [2022-11-20 11:29:31,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:29:31,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [981274913] [2022-11-20 11:29:31,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:29:31,571 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 [2022-11-20 11:29:31,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:29:31,572 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 11:29:31,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 11:29:31,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:29:31,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 11:29:31,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:29:31,900 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 4 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:29:31,901 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:29:32,322 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 11:29:32,322 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:29:32,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [981274913] [2022-11-20 11:29:32,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [981274913] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:29:32,323 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:29:32,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-20 11:29:32,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452442061] [2022-11-20 11:29:32,323 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:29:32,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 11:29:32,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:29:32,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 11:29:32,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2022-11-20 11:29:32,325 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) [2022-11-20 11:29:32,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:29:32,813 INFO L93 Difference]: Finished difference Result 87 states and 93 transitions. [2022-11-20 11:29:32,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 11:29:32,814 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 [2022-11-20 11:29:32,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:29:32,815 INFO L225 Difference]: With dead ends: 87 [2022-11-20 11:29:32,815 INFO L226 Difference]: Without dead ends: 87 [2022-11-20 11:29:32,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2022-11-20 11:29:32,816 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 175 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:29:32,816 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 403 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 11:29:32,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-11-20 11:29:32,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2022-11-20 11:29:32,821 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) [2022-11-20 11:29:32,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 93 transitions. [2022-11-20 11:29:32,822 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 93 transitions. Word has length 38 [2022-11-20 11:29:32,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:29:32,822 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 93 transitions. [2022-11-20 11:29:32,822 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) [2022-11-20 11:29:32,823 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 93 transitions. [2022-11-20 11:29:32,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-20 11:29:32,824 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:29:32,824 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:29:32,848 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/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)] Forceful destruction successful, exit code 0 [2022-11-20 11:29:33,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 11:29:33,025 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)] === [2022-11-20 11:29:33,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:29:33,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1227509228, now seen corresponding path program 3 times [2022-11-20 11:29:33,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:29:33,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1056319145] [2022-11-20 11:29:33,026 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 11:29:33,026 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 [2022-11-20 11:29:33,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:29:33,028 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 11:29:33,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 11:29:33,297 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-11-20 11:29:33,297 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:29:33,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-20 11:29:33,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:29:33,331 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 [2022-11-20 11:29:34,283 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 10 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:29:34,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:29:42,633 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:29:42,634 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:29:42,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1056319145] [2022-11-20 11:29:42,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1056319145] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:29:42,634 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:29:42,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19] total 36 [2022-11-20 11:29:42,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913108415] [2022-11-20 11:29:42,635 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:29:42,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-20 11:29:42,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:29:42,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-20 11:29:42,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=979, Unknown=0, NotChecked=0, Total=1260 [2022-11-20 11:29:42,637 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) [2022-11-20 11:29:46,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:29:46,727 INFO L93 Difference]: Finished difference Result 127 states and 139 transitions. [2022-11-20 11:29:46,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-20 11:29:46,728 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 [2022-11-20 11:29:46,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:29:46,729 INFO L225 Difference]: With dead ends: 127 [2022-11-20 11:29:46,729 INFO L226 Difference]: Without dead ends: 127 [2022-11-20 11:29:46,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=316, Invalid=1090, Unknown=0, NotChecked=0, Total=1406 [2022-11-20 11:29:46,730 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 990 mSDsluCounter, 631 mSDsCounter, 0 mSdLazyCounter, 691 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 993 SdHoareTripleChecker+Valid, 672 SdHoareTripleChecker+Invalid, 891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 109 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-20 11:29:46,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [993 Valid, 672 Invalid, 891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 691 Invalid, 0 Unknown, 109 Unchecked, 2.6s Time] [2022-11-20 11:29:46,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2022-11-20 11:29:46,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 85. [2022-11-20 11:29:46,734 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) [2022-11-20 11:29:46,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 90 transitions. [2022-11-20 11:29:46,735 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 90 transitions. Word has length 41 [2022-11-20 11:29:46,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:29:46,736 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 90 transitions. [2022-11-20 11:29:46,736 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) [2022-11-20 11:29:46,736 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 90 transitions. [2022-11-20 11:29:46,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-20 11:29:46,738 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:29:46,738 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] [2022-11-20 11:29:46,751 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/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)] Forceful destruction successful, exit code 0 [2022-11-20 11:29:46,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 11:29:46,943 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)] === [2022-11-20 11:29:46,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:29:46,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1389862613, now seen corresponding path program 2 times [2022-11-20 11:29:46,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:29:46,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2033235967] [2022-11-20 11:29:46,944 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:29:46,944 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 [2022-11-20 11:29:46,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:29:46,945 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 11:29:46,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 11:29:47,151 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:29:47,152 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:29:47,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 11:29:47,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:29:47,179 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 [2022-11-20 11:29:47,320 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 [2022-11-20 11:29:47,357 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-20 11:29:47,357 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 [2022-11-20 11:29:47,382 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 2 not checked. [2022-11-20 11:29:47,382 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:29:47,704 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-11-20 11:29:47,705 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:29:47,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2033235967] [2022-11-20 11:29:47,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2033235967] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:29:47,705 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:29:47,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2022-11-20 11:29:47,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550386239] [2022-11-20 11:29:47,705 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:29:47,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 11:29:47,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:29:47,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 11:29:47,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=43, Unknown=1, NotChecked=12, Total=72 [2022-11-20 11:29:47,707 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) [2022-11-20 11:29:48,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:29:48,061 INFO L93 Difference]: Finished difference Result 137 states and 146 transitions. [2022-11-20 11:29:48,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:29:48,063 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 [2022-11-20 11:29:48,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:29:48,064 INFO L225 Difference]: With dead ends: 137 [2022-11-20 11:29:48,065 INFO L226 Difference]: Without dead ends: 135 [2022-11-20 11:29:48,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 88 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=69, Unknown=1, NotChecked=16, Total=110 [2022-11-20 11:29:48,065 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 70 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 126 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:29:48,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 304 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 146 Invalid, 0 Unknown, 126 Unchecked, 0.3s Time] [2022-11-20 11:29:48,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2022-11-20 11:29:48,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 85. [2022-11-20 11:29:48,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 68 states have (on average 1.25) internal successors, (85), 80 states have internal predecessors, (85), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 11:29:48,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2022-11-20 11:29:48,070 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 50 [2022-11-20 11:29:48,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:29:48,071 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2022-11-20 11:29:48,071 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) [2022-11-20 11:29:48,071 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2022-11-20 11:29:48,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-20 11:29:48,072 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:29:48,072 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] [2022-11-20 11:29:48,101 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/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)] Forceful destruction successful, exit code 0 [2022-11-20 11:29:48,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 11:29:48,295 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)] === [2022-11-20 11:29:48,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:29:48,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1389862614, now seen corresponding path program 1 times [2022-11-20 11:29:48,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:29:48,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [613432586] [2022-11-20 11:29:48,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:29:48,296 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 [2022-11-20 11:29:48,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:29:48,297 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 11:29:48,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 11:29:48,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:29:48,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-20 11:29:48,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:29:48,578 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 [2022-11-20 11:29:48,586 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 [2022-11-20 11:29:49,078 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 [2022-11-20 11:29:49,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:29:49,116 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 [2022-11-20 11:29:49,136 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-20 11:29:49,137 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 [2022-11-20 11:29:49,187 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 145 trivial. 2 not checked. [2022-11-20 11:29:49,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:29:53,622 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:29:53,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [613432586] [2022-11-20 11:29:53,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [613432586] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:29:53,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1558138384] [2022-11-20 11:29:53,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:29:53,622 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 11:29:53,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/cvc4 [2022-11-20 11:29:53,626 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 11:29:53,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2022-11-20 11:29:54,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:29:54,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-20 11:29:54,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:29:54,184 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 [2022-11-20 11:29:54,191 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 [2022-11-20 11:29:54,564 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 [2022-11-20 11:29:54,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 11:29:54,596 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 [2022-11-20 11:29:54,611 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-20 11:29:54,612 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 [2022-11-20 11:29:54,634 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 145 trivial. 2 not checked. [2022-11-20 11:29:54,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:29:58,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1558138384] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:29:58,902 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:29:58,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2022-11-20 11:29:58,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966525549] [2022-11-20 11:29:58,903 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:29:58,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 11:29:58,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:29:58,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 11:29:58,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=107, Unknown=4, NotChecked=42, Total=182 [2022-11-20 11:29:58,904 INFO L87 Difference]: Start difference. First operand 85 states and 89 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) [2022-11-20 11:29:59,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:29:59,776 INFO L93 Difference]: Finished difference Result 206 states and 222 transitions. [2022-11-20 11:29:59,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 11:29:59,777 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 [2022-11-20 11:29:59,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:29:59,779 INFO L225 Difference]: With dead ends: 206 [2022-11-20 11:29:59,779 INFO L226 Difference]: Without dead ends: 206 [2022-11-20 11:29:59,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 93 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=44, Invalid=170, Unknown=4, NotChecked=54, Total=272 [2022-11-20 11:29:59,780 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 153 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 190 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 11:29:59,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 419 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 333 Invalid, 0 Unknown, 190 Unchecked, 0.7s Time] [2022-11-20 11:29:59,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2022-11-20 11:29:59,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 89. [2022-11-20 11:29:59,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 71 states have (on average 1.2535211267605635) internal successors, (89), 83 states have internal predecessors, (89), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 11:29:59,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 95 transitions. [2022-11-20 11:29:59,787 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 95 transitions. Word has length 50 [2022-11-20 11:29:59,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:29:59,789 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 95 transitions. [2022-11-20 11:29:59,790 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) [2022-11-20 11:29:59,790 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 95 transitions. [2022-11-20 11:29:59,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-20 11:29:59,798 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:29:59,798 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] [2022-11-20 11:29:59,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 11:30:00,011 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (15)] Ended with exit code 0 [2022-11-20 11:30:00,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt [2022-11-20 11:30:00,207 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)] === [2022-11-20 11:30:00,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:30:00,207 INFO L85 PathProgramCache]: Analyzing trace with hash -76906781, now seen corresponding path program 1 times [2022-11-20 11:30:00,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:30:00,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [51274112] [2022-11-20 11:30:00,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:30:00,208 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 [2022-11-20 11:30:00,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:30:00,209 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 11:30:00,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 11:30:00,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:30:00,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:30:00,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:30:00,411 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2022-11-20 11:30:00,411 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:30:00,411 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:30:00,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [51274112] [2022-11-20 11:30:00,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [51274112] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:30:00,412 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:30:00,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:30:00,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885961600] [2022-11-20 11:30:00,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:30:00,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:30:00,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:30:00,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:30:00,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:30:00,413 INFO L87 Difference]: Start difference. First operand 89 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) [2022-11-20 11:30:00,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:30:00,470 INFO L93 Difference]: Finished difference Result 120 states and 130 transitions. [2022-11-20 11:30:00,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:30:00,470 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 [2022-11-20 11:30:00,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:30:00,471 INFO L225 Difference]: With dead ends: 120 [2022-11-20 11:30:00,471 INFO L226 Difference]: Without dead ends: 120 [2022-11-20 11:30:00,472 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 [2022-11-20 11:30:00,472 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 23 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 270 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 [2022-11-20 11:30:00,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 270 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:30:00,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-11-20 11:30:00,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 95. [2022-11-20 11:30:00,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 76 states have (on average 1.236842105263158) internal successors, (94), 87 states have internal predecessors, (94), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-20 11:30:00,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 102 transitions. [2022-11-20 11:30:00,478 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 102 transitions. Word has length 52 [2022-11-20 11:30:00,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:30:00,478 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 102 transitions. [2022-11-20 11:30:00,478 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) [2022-11-20 11:30:00,479 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 102 transitions. [2022-11-20 11:30:00,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-20 11:30:00,479 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:30:00,480 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] [2022-11-20 11:30:00,493 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/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)] Forceful destruction successful, exit code 0 [2022-11-20 11:30:00,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 11:30:00,691 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)] === [2022-11-20 11:30:00,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:30:00,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1665903554, now seen corresponding path program 1 times [2022-11-20 11:30:00,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:30:00,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [59711054] [2022-11-20 11:30:00,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:30:00,691 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 [2022-11-20 11:30:00,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:30:00,692 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 11:30:00,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 11:30:00,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:30:00,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 11:30:00,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:30:00,925 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2022-11-20 11:30:00,926 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:30:00,926 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:30:00,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [59711054] [2022-11-20 11:30:00,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [59711054] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:30:00,926 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:30:00,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:30:00,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411738337] [2022-11-20 11:30:00,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:30:00,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:30:00,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:30:00,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:30:00,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:30:00,929 INFO L87 Difference]: Start difference. First operand 95 states and 102 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) [2022-11-20 11:30:01,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:30:01,029 INFO L93 Difference]: Finished difference Result 115 states and 122 transitions. [2022-11-20 11:30:01,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:30:01,030 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 [2022-11-20 11:30:01,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:30:01,031 INFO L225 Difference]: With dead ends: 115 [2022-11-20 11:30:01,031 INFO L226 Difference]: Without dead ends: 115 [2022-11-20 11:30:01,031 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 [2022-11-20 11:30:01,032 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 39 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:30:01,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 152 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:30:01,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-11-20 11:30:01,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 97. [2022-11-20 11:30:01,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 78 states have (on average 1.2307692307692308) internal successors, (96), 89 states have internal predecessors, (96), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-20 11:30:01,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 104 transitions. [2022-11-20 11:30:01,036 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 104 transitions. Word has length 52 [2022-11-20 11:30:01,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:30:01,036 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 104 transitions. [2022-11-20 11:30:01,036 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) [2022-11-20 11:30:01,037 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 104 transitions. [2022-11-20 11:30:01,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-20 11:30:01,038 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:30:01,038 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] [2022-11-20 11:30:01,060 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 11:30:01,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 11:30:01,248 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)] === [2022-11-20 11:30:01,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:30:01,248 INFO L85 PathProgramCache]: Analyzing trace with hash 584357413, now seen corresponding path program 1 times [2022-11-20 11:30:01,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:30:01,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1961898459] [2022-11-20 11:30:01,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:30:01,249 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 [2022-11-20 11:30:01,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:30:01,250 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 11:30:01,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 11:30:01,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:30:01,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 11:30:01,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:30:01,454 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 [2022-11-20 11:30:01,632 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-11-20 11:30:01,632 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:30:01,868 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-11-20 11:30:01,868 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:30:01,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1961898459] [2022-11-20 11:30:01,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1961898459] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:30:01,869 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:30:01,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2022-11-20 11:30:01,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985123341] [2022-11-20 11:30:01,869 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:30:01,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:30:01,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:30:01,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:30:01,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:30:01,871 INFO L87 Difference]: Start difference. First operand 97 states and 104 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) [2022-11-20 11:30:02,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:30:02,131 INFO L93 Difference]: Finished difference Result 131 states and 143 transitions. [2022-11-20 11:30:02,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:30:02,132 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 [2022-11-20 11:30:02,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:30:02,133 INFO L225 Difference]: With dead ends: 131 [2022-11-20 11:30:02,133 INFO L226 Difference]: Without dead ends: 131 [2022-11-20 11:30:02,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:30:02,134 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 43 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 32 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:30:02,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 285 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 127 Invalid, 0 Unknown, 32 Unchecked, 0.2s Time] [2022-11-20 11:30:02,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2022-11-20 11:30:02,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 111. [2022-11-20 11:30:02,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 91 states have (on average 1.2637362637362637) internal successors, (115), 102 states have internal predecessors, (115), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-20 11:30:02,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 126 transitions. [2022-11-20 11:30:02,140 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 126 transitions. Word has length 55 [2022-11-20 11:30:02,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:30:02,140 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 126 transitions. [2022-11-20 11:30:02,141 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) [2022-11-20 11:30:02,141 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 126 transitions. [2022-11-20 11:30:02,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-20 11:30:02,142 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:30:02,142 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] [2022-11-20 11:30:02,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/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)] Forceful destruction successful, exit code 0 [2022-11-20 11:30:02,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 11:30:02,351 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)] === [2022-11-20 11:30:02,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:30:02,351 INFO L85 PathProgramCache]: Analyzing trace with hash 584357414, now seen corresponding path program 1 times [2022-11-20 11:30:02,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:30:02,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [856274438] [2022-11-20 11:30:02,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:30:02,352 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 [2022-11-20 11:30:02,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:30:02,353 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 11:30:02,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 11:30:02,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:30:02,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-20 11:30:02,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:30:02,559 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 [2022-11-20 11:30:02,976 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-11-20 11:30:02,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:30:04,391 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-11-20 11:30:04,391 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:30:04,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [856274438] [2022-11-20 11:30:04,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [856274438] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:30:04,391 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:30:04,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2022-11-20 11:30:04,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100335753] [2022-11-20 11:30:04,392 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:30:04,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 11:30:04,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:30:04,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 11:30:04,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:30:04,393 INFO L87 Difference]: Start difference. First operand 111 states and 126 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) [2022-11-20 11:30:05,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:30:05,773 INFO L93 Difference]: Finished difference Result 167 states and 181 transitions. [2022-11-20 11:30:05,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 11:30:05,773 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 [2022-11-20 11:30:05,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:30:05,774 INFO L225 Difference]: With dead ends: 167 [2022-11-20 11:30:05,775 INFO L226 Difference]: Without dead ends: 167 [2022-11-20 11:30:05,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2022-11-20 11:30:05,779 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 273 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 93 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:30:05,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 567 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 268 Invalid, 0 Unknown, 93 Unchecked, 1.0s Time] [2022-11-20 11:30:05,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2022-11-20 11:30:05,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 132. [2022-11-20 11:30:05,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 111 states have (on average 1.3423423423423424) internal successors, (149), 122 states have internal predecessors, (149), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-20 11:30:05,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 160 transitions. [2022-11-20 11:30:05,791 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 160 transitions. Word has length 55 [2022-11-20 11:30:05,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:30:05,792 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 160 transitions. [2022-11-20 11:30:05,792 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) [2022-11-20 11:30:05,793 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 160 transitions. [2022-11-20 11:30:05,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-20 11:30:05,794 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:30:05,794 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] [2022-11-20 11:30:05,814 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/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)] Forceful destruction successful, exit code 0 [2022-11-20 11:30:06,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 11:30:06,008 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-11-20 11:30:06,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:30:06,009 INFO L85 PathProgramCache]: Analyzing trace with hash -675254106, now seen corresponding path program 1 times [2022-11-20 11:30:06,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:30:06,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1158957912] [2022-11-20 11:30:06,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:30:06,009 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 [2022-11-20 11:30:06,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:30:06,011 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 11:30:06,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 11:30:06,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:30:06,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 11:30:06,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:30:06,340 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2022-11-20 11:30:06,340 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:30:06,526 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2022-11-20 11:30:06,526 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:30:06,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1158957912] [2022-11-20 11:30:06,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1158957912] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:30:06,526 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:30:06,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-20 11:30:06,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143106771] [2022-11-20 11:30:06,527 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:30:06,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:30:06,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:30:06,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:30:06,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:30:06,528 INFO L87 Difference]: Start difference. First operand 132 states and 160 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) [2022-11-20 11:30:06,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:30:06,807 INFO L93 Difference]: Finished difference Result 324 states and 412 transitions. [2022-11-20 11:30:06,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:30:06,808 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 [2022-11-20 11:30:06,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:30:06,810 INFO L225 Difference]: With dead ends: 324 [2022-11-20 11:30:06,810 INFO L226 Difference]: Without dead ends: 324 [2022-11-20 11:30:06,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2022-11-20 11:30:06,811 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 390 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:30:06,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [390 Valid, 258 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 11:30:06,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2022-11-20 11:30:06,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 164. [2022-11-20 11:30:06,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 139 states have (on average 1.330935251798561) internal successors, (185), 148 states have internal predecessors, (185), 8 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (15), 12 states have call predecessors, (15), 8 states have call successors, (15) [2022-11-20 11:30:06,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 208 transitions. [2022-11-20 11:30:06,820 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 208 transitions. Word has length 56 [2022-11-20 11:30:06,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:30:06,821 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 208 transitions. [2022-11-20 11:30:06,821 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) [2022-11-20 11:30:06,821 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 208 transitions. [2022-11-20 11:30:06,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-20 11:30:06,822 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:30:06,822 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] [2022-11-20 11:30:06,848 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/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)] Forceful destruction successful, exit code 0 [2022-11-20 11:30:07,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 11:30:07,044 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)] === [2022-11-20 11:30:07,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:30:07,044 INFO L85 PathProgramCache]: Analyzing trace with hash 935210686, now seen corresponding path program 1 times [2022-11-20 11:30:07,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:30:07,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2143182585] [2022-11-20 11:30:07,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:30:07,045 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 [2022-11-20 11:30:07,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:30:07,046 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/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) [2022-11-20 11:30:07,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd75b778-8922-4c30-9925-b44c87ae82d7/bin/uautomizer-ug76WZFUDN/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 [2022-11-20 11:30:07,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:30:07,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-20 11:30:07,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:30:07,293 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 [2022-11-20 11:30:07,355 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 [2022-11-20 11:30:07,423 INFO L321 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-11-20 11:30:07,423 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 [2022-11-20 11:30:07,487 INFO L321 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-11-20 11:30:07,487 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 [2022-11-20 11:30:07,552 INFO L321 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-11-20 11:30:07,553 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 [2022-11-20 11:30:07,624 INFO L321 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-11-20 11:30:07,624 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 [2022-11-20 11:30:07,697 INFO L321 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-11-20 11:30:07,698 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 [2022-11-20 11:30:07,768 INFO L321 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-11-20 11:30:07,769 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 [2022-11-20 11:30:07,845 INFO L321 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-11-20 11:30:07,845 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 [2022-11-20 11:30:07,906 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 [2022-11-20 11:30:08,130 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 [2022-11-20 11:30:08,170 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 4 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:30:08,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:30:16,078 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 [2022-11-20 11:30:17,211 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