./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/busybox-1.22.0/basename-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4e7fbc69 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_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/busybox-1.22.0/basename-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS --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 64bit --witnessprinter.graph.data.programhash 65aca230ed2b7a8b5f7f2ccd484c93b0425fe4f5fb1895001f199a0c2754f5f4 --- 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-4e7fbc6 [2022-11-23 02:52:35,926 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 02:52:35,927 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 02:52:35,959 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 02:52:35,960 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 02:52:35,964 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 02:52:35,968 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 02:52:35,973 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 02:52:35,975 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 02:52:35,983 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 02:52:35,984 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 02:52:35,985 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 02:52:35,985 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 02:52:35,986 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 02:52:35,987 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 02:52:35,988 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 02:52:35,989 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 02:52:35,990 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 02:52:35,991 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 02:52:35,993 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 02:52:35,998 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 02:52:36,002 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 02:52:36,004 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 02:52:36,005 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 02:52:36,016 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 02:52:36,017 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 02:52:36,017 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 02:52:36,019 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 02:52:36,020 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 02:52:36,021 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 02:52:36,022 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 02:52:36,023 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 02:52:36,024 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 02:52:36,026 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 02:52:36,027 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 02:52:36,028 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 02:52:36,029 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 02:52:36,029 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 02:52:36,029 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 02:52:36,030 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 02:52:36,031 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 02:52:36,032 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2022-11-23 02:52:36,075 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 02:52:36,075 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 02:52:36,076 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 02:52:36,076 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 02:52:36,077 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 02:52:36,077 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 02:52:36,078 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 02:52:36,078 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 02:52:36,078 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 02:52:36,079 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 02:52:36,080 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 02:52:36,080 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 02:52:36,080 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 02:52:36,081 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-23 02:52:36,081 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-23 02:52:36,081 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-23 02:52:36,081 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 02:52:36,081 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-23 02:52:36,082 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 02:52:36,082 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 02:52:36,082 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 02:52:36,082 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 02:52:36,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 02:52:36,083 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 02:52:36,083 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 02:52:36,083 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 02:52:36,083 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 02:52:36,084 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 02:52:36,084 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 02:52:36,084 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 02:52:36,084 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 65aca230ed2b7a8b5f7f2ccd484c93b0425fe4f5fb1895001f199a0c2754f5f4 [2022-11-23 02:52:36,410 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 02:52:36,443 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 02:52:36,447 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 02:52:36,448 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 02:52:36,449 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 02:52:36,450 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/busybox-1.22.0/basename-1.i [2022-11-23 02:52:39,618 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 02:52:40,030 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 02:52:40,031 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/sv-benchmarks/c/busybox-1.22.0/basename-1.i [2022-11-23 02:52:40,055 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/data/9e12b6511/2a459fe783a24f5f9b924de08eef7ad8/FLAG2c11b9e73 [2022-11-23 02:52:40,074 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/data/9e12b6511/2a459fe783a24f5f9b924de08eef7ad8 [2022-11-23 02:52:40,078 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 02:52:40,080 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 02:52:40,084 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 02:52:40,084 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 02:52:40,088 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 02:52:40,089 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:52:40" (1/1) ... [2022-11-23 02:52:40,090 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@664a4037 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:52:40, skipping insertion in model container [2022-11-23 02:52:40,090 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:52:40" (1/1) ... [2022-11-23 02:52:40,098 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 02:52:40,158 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 02:52:40,793 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/sv-benchmarks/c/busybox-1.22.0/basename-1.i[58057,58070] [2022-11-23 02:52:40,857 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 02:52:40,889 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) [2022-11-23 02:52:40,890 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@14de2a6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:52:40, skipping insertion in model container [2022-11-23 02:52:40,890 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 02:52:40,891 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-23 02:52:40,893 INFO L158 Benchmark]: Toolchain (without parser) took 811.58ms. Allocated memory is still 178.3MB. Free memory was 130.2MB in the beginning and 110.2MB in the end (delta: 20.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-23 02:52:40,893 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 138.4MB. Free memory is still 77.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 02:52:40,894 INFO L158 Benchmark]: CACSL2BoogieTranslator took 806.49ms. Allocated memory is still 178.3MB. Free memory was 130.2MB in the beginning and 110.2MB in the end (delta: 20.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-23 02:52:40,896 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 138.4MB. Free memory is still 77.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 806.49ms. Allocated memory is still 178.3MB. Free memory was 130.2MB in the beginning and 110.2MB in the end (delta: 20.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1515]: 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_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/busybox-1.22.0/basename-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS --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 64bit --witnessprinter.graph.data.programhash 65aca230ed2b7a8b5f7f2ccd484c93b0425fe4f5fb1895001f199a0c2754f5f4 --- 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-4e7fbc6 [2022-11-23 02:52:43,376 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 02:52:43,379 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 02:52:43,438 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 02:52:43,438 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 02:52:43,442 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 02:52:43,445 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 02:52:43,448 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 02:52:43,451 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 02:52:43,457 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 02:52:43,458 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 02:52:43,461 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 02:52:43,461 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 02:52:43,464 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 02:52:43,466 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 02:52:43,473 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 02:52:43,474 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 02:52:43,475 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 02:52:43,477 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 02:52:43,481 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 02:52:43,483 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 02:52:43,486 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 02:52:43,487 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 02:52:43,488 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 02:52:43,499 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 02:52:43,499 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 02:52:43,500 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 02:52:43,502 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 02:52:43,504 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 02:52:43,505 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 02:52:43,506 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 02:52:43,507 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 02:52:43,509 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 02:52:43,510 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 02:52:43,511 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 02:52:43,511 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 02:52:43,512 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 02:52:43,512 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 02:52:43,512 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 02:52:43,513 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 02:52:43,514 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 02:52:43,515 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Bitvector.epf [2022-11-23 02:52:43,554 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 02:52:43,554 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 02:52:43,556 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 02:52:43,556 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 02:52:43,557 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 02:52:43,557 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 02:52:43,558 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 02:52:43,558 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 02:52:43,558 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 02:52:43,558 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 02:52:43,559 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-23 02:52:43,560 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 02:52:43,560 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 02:52:43,560 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-23 02:52:43,560 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-23 02:52:43,561 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-23 02:52:43,561 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 02:52:43,561 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-23 02:52:43,561 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-23 02:52:43,561 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-23 02:52:43,562 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 02:52:43,562 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 02:52:43,562 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 02:52:43,562 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 02:52:43,562 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 02:52:43,563 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 02:52:43,563 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 02:52:43,563 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-23 02:52:43,563 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-23 02:52:43,564 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 02:52:43,564 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 02:52:43,564 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 02:52:43,564 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-11-23 02:52:43,565 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 65aca230ed2b7a8b5f7f2ccd484c93b0425fe4f5fb1895001f199a0c2754f5f4 [2022-11-23 02:52:43,909 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 02:52:43,932 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 02:52:43,935 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 02:52:43,936 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 02:52:43,937 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 02:52:43,938 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/busybox-1.22.0/basename-1.i [2022-11-23 02:52:46,978 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 02:52:47,402 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 02:52:47,403 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/sv-benchmarks/c/busybox-1.22.0/basename-1.i [2022-11-23 02:52:47,426 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/data/5c6bdafcc/f5f3d20ca83a465a9c3bba46437f0d9a/FLAG4d18d9bc7 [2022-11-23 02:52:47,446 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/data/5c6bdafcc/f5f3d20ca83a465a9c3bba46437f0d9a [2022-11-23 02:52:47,449 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 02:52:47,451 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 02:52:47,453 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 02:52:47,453 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 02:52:47,457 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 02:52:47,459 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:52:47" (1/1) ... [2022-11-23 02:52:47,460 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@425022c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:52:47, skipping insertion in model container [2022-11-23 02:52:47,461 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:52:47" (1/1) ... [2022-11-23 02:52:47,469 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 02:52:47,539 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 02:52:48,340 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/sv-benchmarks/c/busybox-1.22.0/basename-1.i[58057,58070] [2022-11-23 02:52:48,401 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 02:52:48,421 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-23 02:52:48,435 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 02:52:48,470 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/sv-benchmarks/c/busybox-1.22.0/basename-1.i[58057,58070] [2022-11-23 02:52:48,501 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 02:52:48,506 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 02:52:48,594 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/sv-benchmarks/c/busybox-1.22.0/basename-1.i[58057,58070] [2022-11-23 02:52:48,623 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 02:52:48,713 INFO L208 MainTranslator]: Completed translation [2022-11-23 02:52:48,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:52:48 WrapperNode [2022-11-23 02:52:48,713 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 02:52:48,714 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 02:52:48,715 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 02:52:48,715 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 02:52:48,722 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:52:48" (1/1) ... [2022-11-23 02:52:48,752 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:52:48" (1/1) ... [2022-11-23 02:52:48,788 INFO L138 Inliner]: procedures = 352, calls = 112, calls flagged for inlining = 11, calls inlined = 10, statements flattened = 367 [2022-11-23 02:52:48,789 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 02:52:48,790 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 02:52:48,790 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 02:52:48,790 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 02:52:48,805 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:52:48" (1/1) ... [2022-11-23 02:52:48,806 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:52:48" (1/1) ... [2022-11-23 02:52:48,814 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:52:48" (1/1) ... [2022-11-23 02:52:48,815 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:52:48" (1/1) ... [2022-11-23 02:52:48,850 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:52:48" (1/1) ... [2022-11-23 02:52:48,866 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:52:48" (1/1) ... [2022-11-23 02:52:48,888 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:52:48" (1/1) ... [2022-11-23 02:52:48,891 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:52:48" (1/1) ... [2022-11-23 02:52:48,897 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 02:52:48,903 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 02:52:48,905 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 02:52:48,905 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 02:52:48,906 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:52:48" (1/1) ... [2022-11-23 02:52:48,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 02:52:48,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:52:48,948 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 02:52:48,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 02:52:48,999 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-23 02:52:48,999 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-23 02:52:48,999 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-23 02:52:48,999 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-23 02:52:48,999 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 02:52:49,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-11-23 02:52:49,000 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 02:52:49,000 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-23 02:52:49,000 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 02:52:49,001 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2022-11-23 02:52:49,001 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 02:52:49,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 02:52:49,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 02:52:49,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 02:52:49,406 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 02:52:49,408 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 02:52:50,820 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 02:52:50,834 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 02:52:50,834 INFO L300 CfgBuilder]: Removed 9 assume(true) statements. [2022-11-23 02:52:50,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:52:50 BoogieIcfgContainer [2022-11-23 02:52:50,838 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 02:52:50,841 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 02:52:50,842 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 02:52:50,846 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 02:52:50,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:52:47" (1/3) ... [2022-11-23 02:52:50,848 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b644428 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:52:50, skipping insertion in model container [2022-11-23 02:52:50,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:52:48" (2/3) ... [2022-11-23 02:52:50,850 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b644428 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:52:50, skipping insertion in model container [2022-11-23 02:52:50,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:52:50" (3/3) ... [2022-11-23 02:52:50,852 INFO L112 eAbstractionObserver]: Analyzing ICFG basename-1.i [2022-11-23 02:52:50,874 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 02:52:50,874 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 92 error locations. [2022-11-23 02:52:50,945 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 02:52:50,953 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@c19884e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 02:52:50,954 INFO L358 AbstractCegarLoop]: Starting to check reachability of 92 error locations. [2022-11-23 02:52:50,958 INFO L276 IsEmpty]: Start isEmpty. Operand has 238 states, 142 states have (on average 1.9366197183098592) internal successors, (275), 234 states have internal predecessors, (275), 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) [2022-11-23 02:52:50,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-23 02:52:50,964 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:52:50,964 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-23 02:52:50,965 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-23 02:52:50,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:52:50,973 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2022-11-23 02:52:50,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 02:52:50,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [711304642] [2022-11-23 02:52:50,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:52:50,989 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 [2022-11-23 02:52:50,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 02:52:50,990 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/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) [2022-11-23 02:52:50,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 02:52:51,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:52:51,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 02:52:51,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:52:51,247 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 [2022-11-23 02:52:51,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:52:51,261 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:52:51,262 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 02:52:51,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [711304642] [2022-11-23 02:52:51,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [711304642] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:52:51,263 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:52:51,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 02:52:51,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884685133] [2022-11-23 02:52:51,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:52:51,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:52:51,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 02:52:51,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:52:51,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:52:51,302 INFO L87 Difference]: Start difference. First operand has 238 states, 142 states have (on average 1.9366197183098592) internal successors, (275), 234 states have internal predecessors, (275), 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 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:52:51,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:52:51,842 INFO L93 Difference]: Finished difference Result 248 states and 279 transitions. [2022-11-23 02:52:51,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:52:51,846 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-23 02:52:51,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:52:51,856 INFO L225 Difference]: With dead ends: 248 [2022-11-23 02:52:51,856 INFO L226 Difference]: Without dead ends: 246 [2022-11-23 02:52:51,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:52:51,862 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 233 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 02:52:51,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 201 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 02:52:51,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2022-11-23 02:52:51,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 230. [2022-11-23 02:52:51,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 139 states have (on average 1.841726618705036) internal successors, (256), 226 states have internal predecessors, (256), 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) [2022-11-23 02:52:51,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 260 transitions. [2022-11-23 02:52:51,915 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 260 transitions. Word has length 3 [2022-11-23 02:52:51,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:52:51,916 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 260 transitions. [2022-11-23 02:52:51,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:52:51,917 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 260 transitions. [2022-11-23 02:52:51,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-23 02:52:51,917 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:52:51,917 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-23 02:52:51,940 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 02:52:52,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 02:52:52,131 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-23 02:52:52,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:52:52,132 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2022-11-23 02:52:52,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 02:52:52,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1868081569] [2022-11-23 02:52:52,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:52:52,134 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 [2022-11-23 02:52:52,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 02:52:52,135 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/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) [2022-11-23 02:52:52,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 02:52:52,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:52:52,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-23 02:52:52,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:52:52,322 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 [2022-11-23 02:52:52,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:52:52,337 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:52:52,337 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 02:52:52,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1868081569] [2022-11-23 02:52:52,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1868081569] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:52:52,338 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:52:52,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 02:52:52,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077113260] [2022-11-23 02:52:52,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:52:52,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:52:52,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 02:52:52,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:52:52,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:52:52,342 INFO L87 Difference]: Start difference. First operand 230 states and 260 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:52:53,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:52:53,326 INFO L93 Difference]: Finished difference Result 229 states and 259 transitions. [2022-11-23 02:52:53,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:52:53,328 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-23 02:52:53,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:52:53,329 INFO L225 Difference]: With dead ends: 229 [2022-11-23 02:52:53,329 INFO L226 Difference]: Without dead ends: 229 [2022-11-23 02:52:53,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:52:53,331 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 9 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-23 02:52:53,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 420 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-23 02:52:53,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2022-11-23 02:52:53,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2022-11-23 02:52:53,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 139 states have (on average 1.8345323741007193) internal successors, (255), 225 states have internal predecessors, (255), 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) [2022-11-23 02:52:53,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 259 transitions. [2022-11-23 02:52:53,347 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 259 transitions. Word has length 3 [2022-11-23 02:52:53,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:52:53,347 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 259 transitions. [2022-11-23 02:52:53,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:52:53,348 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 259 transitions. [2022-11-23 02:52:53,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-23 02:52:53,349 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:52:53,349 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-23 02:52:53,362 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 02:52:53,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 02:52:53,562 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-23 02:52:53,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:52:53,563 INFO L85 PathProgramCache]: Analyzing trace with hash 889446313, now seen corresponding path program 1 times [2022-11-23 02:52:53,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 02:52:53,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1727730416] [2022-11-23 02:52:53,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:52:53,570 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 [2022-11-23 02:52:53,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 02:52:53,571 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/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) [2022-11-23 02:52:53,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 02:52:53,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:52:53,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 02:52:53,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:52:53,737 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 [2022-11-23 02:52:53,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:52:53,806 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:52:53,807 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 02:52:53,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1727730416] [2022-11-23 02:52:53,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1727730416] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:52:53,808 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:52:53,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 02:52:53,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393220462] [2022-11-23 02:52:53,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:52:53,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 02:52:53,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 02:52:53,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 02:52:53,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 02:52:53,810 INFO L87 Difference]: Start difference. First operand 229 states and 259 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:52:54,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:52:54,974 INFO L93 Difference]: Finished difference Result 233 states and 263 transitions. [2022-11-23 02:52:54,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 02:52:54,975 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-23 02:52:54,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:52:54,976 INFO L225 Difference]: With dead ends: 233 [2022-11-23 02:52:54,977 INFO L226 Difference]: Without dead ends: 233 [2022-11-23 02:52:54,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 02:52:54,978 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 12 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-23 02:52:54,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 585 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-23 02:52:54,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2022-11-23 02:52:54,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 231. [2022-11-23 02:52:54,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 141 states have (on average 1.822695035460993) internal successors, (257), 227 states have internal predecessors, (257), 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) [2022-11-23 02:52:54,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 261 transitions. [2022-11-23 02:52:54,992 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 261 transitions. Word has length 6 [2022-11-23 02:52:54,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:52:54,992 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 261 transitions. [2022-11-23 02:52:54,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:52:54,993 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 261 transitions. [2022-11-23 02:52:54,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-23 02:52:54,994 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:52:54,994 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:52:55,017 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 02:52:55,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 02:52:55,213 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-23 02:52:55,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:52:55,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1261842348, now seen corresponding path program 1 times [2022-11-23 02:52:55,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 02:52:55,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1910130456] [2022-11-23 02:52:55,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:52:55,215 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 [2022-11-23 02:52:55,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 02:52:55,218 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/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) [2022-11-23 02:52:55,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 02:52:55,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:52:55,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 02:52:55,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:52:55,415 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 [2022-11-23 02:52:55,557 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:52:55,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:52:56,403 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:52:56,403 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 02:52:56,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1910130456] [2022-11-23 02:52:56,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1910130456] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:52:56,404 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 02:52:56,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2022-11-23 02:52:56,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046743929] [2022-11-23 02:52:56,405 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 02:52:56,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 02:52:56,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 02:52:56,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 02:52:56,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 02:52:56,406 INFO L87 Difference]: Start difference. First operand 231 states and 261 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:53:01,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:53:01,195 INFO L93 Difference]: Finished difference Result 237 states and 267 transitions. [2022-11-23 02:53:01,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 02:53:01,197 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-23 02:53:01,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:53:01,198 INFO L225 Difference]: With dead ends: 237 [2022-11-23 02:53:01,198 INFO L226 Difference]: Without dead ends: 237 [2022-11-23 02:53:01,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2022-11-23 02:53:01,200 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 38 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 752 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-23 02:53:01,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 752 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-11-23 02:53:01,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2022-11-23 02:53:01,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2022-11-23 02:53:01,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 148 states have (on average 1.777027027027027) internal successors, (263), 233 states have internal predecessors, (263), 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) [2022-11-23 02:53:01,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 267 transitions. [2022-11-23 02:53:01,210 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 267 transitions. Word has length 10 [2022-11-23 02:53:01,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:53:01,211 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 267 transitions. [2022-11-23 02:53:01,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 02:53:01,211 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 267 transitions. [2022-11-23 02:53:01,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-23 02:53:01,212 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:53:01,212 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:53:01,231 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 02:53:01,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 02:53:01,427 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-23 02:53:01,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:53:01,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1887063184, now seen corresponding path program 1 times [2022-11-23 02:53:01,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 02:53:01,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1953745731] [2022-11-23 02:53:01,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:53:01,429 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 [2022-11-23 02:53:01,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 02:53:01,431 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/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) [2022-11-23 02:53:01,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 02:53:01,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:53:01,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 02:53:01,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:53:01,717 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:53:01,720 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:53:01,851 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:53:01,851 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 02:53:01,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1953745731] [2022-11-23 02:53:01,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1953745731] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:53:01,852 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 02:53:01,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-11-23 02:53:01,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307021273] [2022-11-23 02:53:01,852 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 02:53:01,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-23 02:53:01,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 02:53:01,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-23 02:53:01,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-11-23 02:53:01,854 INFO L87 Difference]: Start difference. First operand 237 states and 267 transitions. Second operand has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-23 02:53:02,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:53:02,185 INFO L93 Difference]: Finished difference Result 257 states and 287 transitions. [2022-11-23 02:53:02,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-23 02:53:02,185 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 25 [2022-11-23 02:53:02,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:53:02,187 INFO L225 Difference]: With dead ends: 257 [2022-11-23 02:53:02,187 INFO L226 Difference]: Without dead ends: 257 [2022-11-23 02:53:02,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2022-11-23 02:53:02,188 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 27 mSDsluCounter, 1019 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 1277 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 02:53:02,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 1277 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 02:53:02,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2022-11-23 02:53:02,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 257. [2022-11-23 02:53:02,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 168 states have (on average 1.6845238095238095) internal successors, (283), 253 states have internal predecessors, (283), 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) [2022-11-23 02:53:02,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 287 transitions. [2022-11-23 02:53:02,197 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 287 transitions. Word has length 25 [2022-11-23 02:53:02,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:53:02,198 INFO L495 AbstractCegarLoop]: Abstraction has 257 states and 287 transitions. [2022-11-23 02:53:02,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-23 02:53:02,198 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 287 transitions. [2022-11-23 02:53:02,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-23 02:53:02,199 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:53:02,199 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:53:02,218 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 02:53:02,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 02:53:02,414 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-23 02:53:02,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:53:02,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1620022495, now seen corresponding path program 2 times [2022-11-23 02:53:02,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 02:53:02,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1295130850] [2022-11-23 02:53:02,415 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 02:53:02,415 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 [2022-11-23 02:53:02,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 02:53:02,416 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/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) [2022-11-23 02:53:02,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 02:53:02,650 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-23 02:53:02,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 02:53:02,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 02:53:02,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:53:02,685 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-23 02:53:02,686 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 1 case distinctions, treesize of input 9 treesize of output 15 [2022-11-23 02:53:02,742 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2022-11-23 02:53:02,742 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:53:02,742 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 02:53:02,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1295130850] [2022-11-23 02:53:02,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1295130850] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:53:02,742 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:53:02,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 02:53:02,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773335642] [2022-11-23 02:53:02,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:53:02,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:53:02,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 02:53:02,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:53:02,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:53:02,744 INFO L87 Difference]: Start difference. First operand 257 states and 287 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 02:53:03,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:53:03,284 INFO L93 Difference]: Finished difference Result 268 states and 299 transitions. [2022-11-23 02:53:03,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:53:03,284 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 45 [2022-11-23 02:53:03,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:53:03,286 INFO L225 Difference]: With dead ends: 268 [2022-11-23 02:53:03,286 INFO L226 Difference]: Without dead ends: 268 [2022-11-23 02:53:03,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 02:53:03,287 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 218 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 02:53:03,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 204 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 02:53:03,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2022-11-23 02:53:03,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 252. [2022-11-23 02:53:03,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 168 states have (on average 1.6547619047619047) internal successors, (278), 248 states have internal predecessors, (278), 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) [2022-11-23 02:53:03,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 282 transitions. [2022-11-23 02:53:03,296 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 282 transitions. Word has length 45 [2022-11-23 02:53:03,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:53:03,298 INFO L495 AbstractCegarLoop]: Abstraction has 252 states and 282 transitions. [2022-11-23 02:53:03,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 02:53:03,298 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 282 transitions. [2022-11-23 02:53:03,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-23 02:53:03,299 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:53:03,300 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:53:03,320 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 02:53:03,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 02:53:03,520 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-23 02:53:03,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:53:03,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1620022494, now seen corresponding path program 1 times [2022-11-23 02:53:03,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 02:53:03,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [619684681] [2022-11-23 02:53:03,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:53:03,521 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 [2022-11-23 02:53:03,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 02:53:03,523 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/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) [2022-11-23 02:53:03,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 02:53:03,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:53:03,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-23 02:53:03,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:53:03,968 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:53:03,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:53:04,362 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 02:53:04,362 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 02:53:04,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [619684681] [2022-11-23 02:53:04,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [619684681] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:53:04,362 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 02:53:04,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2022-11-23 02:53:04,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317668466] [2022-11-23 02:53:04,363 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 02:53:04,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-23 02:53:04,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 02:53:04,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-23 02:53:04,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2022-11-23 02:53:04,364 INFO L87 Difference]: Start difference. First operand 252 states and 282 transitions. Second operand has 20 states, 20 states have (on average 4.0) internal successors, (80), 20 states have internal predecessors, (80), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-23 02:53:05,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:53:05,004 INFO L93 Difference]: Finished difference Result 260 states and 290 transitions. [2022-11-23 02:53:05,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-23 02:53:05,004 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.0) internal successors, (80), 20 states have internal predecessors, (80), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 45 [2022-11-23 02:53:05,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:53:05,006 INFO L225 Difference]: With dead ends: 260 [2022-11-23 02:53:05,006 INFO L226 Difference]: Without dead ends: 260 [2022-11-23 02:53:05,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2022-11-23 02:53:05,007 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 33 mSDsluCounter, 3033 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 3291 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-23 02:53:05,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 3291 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-23 02:53:05,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2022-11-23 02:53:05,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 260. [2022-11-23 02:53:05,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 176 states have (on average 1.625) internal successors, (286), 256 states have internal predecessors, (286), 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) [2022-11-23 02:53:05,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 290 transitions. [2022-11-23 02:53:05,015 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 290 transitions. Word has length 45 [2022-11-23 02:53:05,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:53:05,016 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 290 transitions. [2022-11-23 02:53:05,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.0) internal successors, (80), 20 states have internal predecessors, (80), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-23 02:53:05,016 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 290 transitions. [2022-11-23 02:53:05,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-23 02:53:05,017 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:53:05,018 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:53:05,038 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-11-23 02:53:05,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 02:53:05,231 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-23 02:53:05,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:53:05,231 INFO L85 PathProgramCache]: Analyzing trace with hash 501144028, now seen corresponding path program 2 times [2022-11-23 02:53:05,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 02:53:05,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1002009317] [2022-11-23 02:53:05,232 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 02:53:05,232 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 [2022-11-23 02:53:05,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 02:53:05,233 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/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) [2022-11-23 02:53:05,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 02:53:05,471 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-23 02:53:05,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 02:53:05,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-23 02:53:05,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:53:05,560 INFO L321 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2022-11-23 02:53:05,560 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 1 case distinctions, treesize of input 19 treesize of output 21 [2022-11-23 02:53:05,704 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-23 02:53:05,704 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:53:05,704 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 02:53:05,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1002009317] [2022-11-23 02:53:05,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1002009317] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:53:05,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:53:05,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 02:53:05,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623256124] [2022-11-23 02:53:05,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:53:05,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 02:53:05,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 02:53:05,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 02:53:05,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-23 02:53:05,706 INFO L87 Difference]: Start difference. First operand 260 states and 290 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 02:53:07,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:53:07,511 INFO L93 Difference]: Finished difference Result 439 states and 497 transitions. [2022-11-23 02:53:07,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 02:53:07,512 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 53 [2022-11-23 02:53:07,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:53:07,514 INFO L225 Difference]: With dead ends: 439 [2022-11-23 02:53:07,514 INFO L226 Difference]: Without dead ends: 439 [2022-11-23 02:53:07,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-23 02:53:07,515 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 633 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 635 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-23 02:53:07,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [635 Valid, 748 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-23 02:53:07,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2022-11-23 02:53:07,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 363. [2022-11-23 02:53:07,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 279 states have (on average 1.7168458781362008) internal successors, (479), 358 states have internal predecessors, (479), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 02:53:07,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 485 transitions. [2022-11-23 02:53:07,526 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 485 transitions. Word has length 53 [2022-11-23 02:53:07,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:53:07,527 INFO L495 AbstractCegarLoop]: Abstraction has 363 states and 485 transitions. [2022-11-23 02:53:07,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 02:53:07,527 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 485 transitions. [2022-11-23 02:53:07,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-23 02:53:07,528 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:53:07,528 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:53:07,543 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/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)] Forceful destruction successful, exit code 0 [2022-11-23 02:53:07,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 02:53:07,742 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-23 02:53:07,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:53:07,743 INFO L85 PathProgramCache]: Analyzing trace with hash 275387719, now seen corresponding path program 1 times [2022-11-23 02:53:07,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 02:53:07,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [799214858] [2022-11-23 02:53:07,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:53:07,744 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 [2022-11-23 02:53:07,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 02:53:07,745 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/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) [2022-11-23 02:53:07,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 02:53:08,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:53:08,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-23 02:53:08,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:53:08,299 INFO L321 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2022-11-23 02:53:08,300 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 1 case distinctions, treesize of input 19 treesize of output 21 [2022-11-23 02:53:08,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:53:08,812 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-23 02:53:08,813 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 36 [2022-11-23 02:53:08,847 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-23 02:53:08,848 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 [2022-11-23 02:53:09,014 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-23 02:53:09,015 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:53:09,015 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 02:53:09,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [799214858] [2022-11-23 02:53:09,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [799214858] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:53:09,015 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:53:09,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-23 02:53:09,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545720347] [2022-11-23 02:53:09,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:53:09,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 02:53:09,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 02:53:09,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 02:53:09,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-23 02:53:09,017 INFO L87 Difference]: Start difference. First operand 363 states and 485 transitions. Second operand has 9 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 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) [2022-11-23 02:53:14,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:53:14,574 INFO L93 Difference]: Finished difference Result 295 states and 327 transitions. [2022-11-23 02:53:14,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 02:53:14,575 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 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 56 [2022-11-23 02:53:14,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:53:14,577 INFO L225 Difference]: With dead ends: 295 [2022-11-23 02:53:14,577 INFO L226 Difference]: Without dead ends: 295 [2022-11-23 02:53:14,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-11-23 02:53:14,578 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 782 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 670 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 782 SdHoareTripleChecker+Valid, 607 SdHoareTripleChecker+Invalid, 684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-11-23 02:53:14,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [782 Valid, 607 Invalid, 684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 670 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-11-23 02:53:14,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2022-11-23 02:53:14,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 272. [2022-11-23 02:53:14,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 190 states have (on average 1.605263157894737) internal successors, (305), 268 states have internal predecessors, (305), 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) [2022-11-23 02:53:14,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 309 transitions. [2022-11-23 02:53:14,586 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 309 transitions. Word has length 56 [2022-11-23 02:53:14,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:53:14,586 INFO L495 AbstractCegarLoop]: Abstraction has 272 states and 309 transitions. [2022-11-23 02:53:14,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 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) [2022-11-23 02:53:14,587 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 309 transitions. [2022-11-23 02:53:14,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-23 02:53:14,587 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:53:14,588 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:53:14,605 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-23 02:53:14,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 02:53:14,802 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-23 02:53:14,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:53:14,803 INFO L85 PathProgramCache]: Analyzing trace with hash 687983530, now seen corresponding path program 1 times [2022-11-23 02:53:14,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 02:53:14,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [41305612] [2022-11-23 02:53:14,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:53:14,804 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 [2022-11-23 02:53:14,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 02:53:14,805 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/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) [2022-11-23 02:53:14,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 02:53:15,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:53:15,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-23 02:53:15,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:53:15,408 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-11-23 02:53:15,409 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 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-23 02:53:15,456 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-23 02:53:15,456 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 1 case distinctions, treesize of input 9 treesize of output 19 [2022-11-23 02:53:15,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 02:53:15,780 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 17 treesize of output 19 [2022-11-23 02:53:15,797 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-23 02:53:15,797 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 [2022-11-23 02:53:16,010 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-23 02:53:16,010 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:53:16,010 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 02:53:16,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [41305612] [2022-11-23 02:53:16,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [41305612] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:53:16,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:53:16,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 02:53:16,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717369586] [2022-11-23 02:53:16,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:53:16,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 02:53:16,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 02:53:16,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 02:53:16,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-23 02:53:16,012 INFO L87 Difference]: Start difference. First operand 272 states and 309 transitions. Second operand has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 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) [2022-11-23 02:53:20,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:53:20,776 INFO L93 Difference]: Finished difference Result 289 states and 321 transitions. [2022-11-23 02:53:20,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 02:53:20,777 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 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 59 [2022-11-23 02:53:20,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:53:20,783 INFO L225 Difference]: With dead ends: 289 [2022-11-23 02:53:20,783 INFO L226 Difference]: Without dead ends: 289 [2022-11-23 02:53:20,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-11-23 02:53:20,784 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 518 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 518 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-23 02:53:20,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [518 Valid, 619 Invalid, 662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 651 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-11-23 02:53:20,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2022-11-23 02:53:20,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 276. [2022-11-23 02:53:20,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 195 states have (on average 1.5897435897435896) internal successors, (310), 272 states have internal predecessors, (310), 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) [2022-11-23 02:53:20,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 314 transitions. [2022-11-23 02:53:20,792 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 314 transitions. Word has length 59 [2022-11-23 02:53:20,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:53:20,794 INFO L495 AbstractCegarLoop]: Abstraction has 276 states and 314 transitions. [2022-11-23 02:53:20,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 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) [2022-11-23 02:53:20,794 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 314 transitions. [2022-11-23 02:53:20,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-23 02:53:20,801 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:53:20,801 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:53:20,818 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 02:53:21,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 02:53:21,018 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-23 02:53:21,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:53:21,019 INFO L85 PathProgramCache]: Analyzing trace with hash 133394829, now seen corresponding path program 1 times [2022-11-23 02:53:21,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 02:53:21,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1414931112] [2022-11-23 02:53:21,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:53:21,020 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 [2022-11-23 02:53:21,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 02:53:21,021 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/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) [2022-11-23 02:53:21,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 02:53:21,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:53:21,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-23 02:53:21,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:53:21,722 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 [2022-11-23 02:53:21,764 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 16 treesize of output 12 [2022-11-23 02:53:21,931 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-11-23 02:53:21,932 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 40 treesize of output 30 [2022-11-23 02:53:22,063 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-23 02:53:22,063 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 42 treesize of output 14 [2022-11-23 02:53:22,106 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-23 02:53:22,106 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:53:22,106 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 02:53:22,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1414931112] [2022-11-23 02:53:22,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1414931112] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:53:22,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:53:22,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 02:53:22,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153400303] [2022-11-23 02:53:22,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:53:22,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 02:53:22,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 02:53:22,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 02:53:22,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-23 02:53:22,108 INFO L87 Difference]: Start difference. First operand 276 states and 314 transitions. Second operand has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 states have internal predecessors, (24), 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) [2022-11-23 02:53:24,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:53:24,230 INFO L93 Difference]: Finished difference Result 274 states and 311 transitions. [2022-11-23 02:53:24,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 02:53:24,231 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 states have internal predecessors, (24), 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 62 [2022-11-23 02:53:24,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:53:24,232 INFO L225 Difference]: With dead ends: 274 [2022-11-23 02:53:24,232 INFO L226 Difference]: Without dead ends: 274 [2022-11-23 02:53:24,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-23 02:53:24,233 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 231 mSDsluCounter, 629 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 859 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-23 02:53:24,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 859 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-23 02:53:24,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2022-11-23 02:53:24,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2022-11-23 02:53:24,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 195 states have (on average 1.5743589743589743) internal successors, (307), 270 states have internal predecessors, (307), 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) [2022-11-23 02:53:24,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 311 transitions. [2022-11-23 02:53:24,240 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 311 transitions. Word has length 62 [2022-11-23 02:53:24,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:53:24,241 INFO L495 AbstractCegarLoop]: Abstraction has 274 states and 311 transitions. [2022-11-23 02:53:24,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 states have internal predecessors, (24), 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) [2022-11-23 02:53:24,241 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 311 transitions. [2022-11-23 02:53:24,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-23 02:53:24,242 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:53:24,242 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:53:24,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 02:53:24,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 02:53:24,462 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-23 02:53:24,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:53:24,463 INFO L85 PathProgramCache]: Analyzing trace with hash 133394830, now seen corresponding path program 1 times [2022-11-23 02:53:24,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 02:53:24,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [675776117] [2022-11-23 02:53:24,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:53:24,464 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 [2022-11-23 02:53:24,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 02:53:24,467 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/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) [2022-11-23 02:53:24,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 02:53:25,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:53:25,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-23 02:53:25,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:53:25,072 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 10 treesize of output 8 [2022-11-23 02:53:25,120 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 [2022-11-23 02:53:25,165 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-23 02:53:25,186 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-23 02:53:25,306 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 21 treesize of output 23 [2022-11-23 02:53:25,326 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 21 [2022-11-23 02:53:25,404 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 25 treesize of output 7 [2022-11-23 02:53:25,408 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 27 treesize of output 9 [2022-11-23 02:53:25,440 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-23 02:53:25,441 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:53:25,441 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 02:53:25,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [675776117] [2022-11-23 02:53:25,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [675776117] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:53:25,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:53:25,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 02:53:25,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666209447] [2022-11-23 02:53:25,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:53:25,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 02:53:25,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 02:53:25,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 02:53:25,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-23 02:53:25,442 INFO L87 Difference]: Start difference. First operand 274 states and 311 transitions. Second operand has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 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) [2022-11-23 02:53:27,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:53:27,732 INFO L93 Difference]: Finished difference Result 273 states and 309 transitions. [2022-11-23 02:53:27,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 02:53:27,734 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 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 62 [2022-11-23 02:53:27,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:53:27,735 INFO L225 Difference]: With dead ends: 273 [2022-11-23 02:53:27,735 INFO L226 Difference]: Without dead ends: 273 [2022-11-23 02:53:27,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2022-11-23 02:53:27,736 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 237 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 841 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-23 02:53:27,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 841 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-23 02:53:27,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2022-11-23 02:53:27,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 273. [2022-11-23 02:53:27,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 195 states have (on average 1.564102564102564) internal successors, (305), 269 states have internal predecessors, (305), 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) [2022-11-23 02:53:27,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 309 transitions. [2022-11-23 02:53:27,744 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 309 transitions. Word has length 62 [2022-11-23 02:53:27,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:53:27,744 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 309 transitions. [2022-11-23 02:53:27,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 states have internal predecessors, (24), 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) [2022-11-23 02:53:27,745 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 309 transitions. [2022-11-23 02:53:27,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-23 02:53:27,746 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:53:27,746 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:53:27,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 02:53:27,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 02:53:27,964 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-23 02:53:27,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:53:27,964 INFO L85 PathProgramCache]: Analyzing trace with hash 379730104, now seen corresponding path program 1 times [2022-11-23 02:53:27,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 02:53:27,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [860865947] [2022-11-23 02:53:27,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:53:27,965 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 [2022-11-23 02:53:27,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 02:53:27,966 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/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) [2022-11-23 02:53:27,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 02:53:28,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:53:28,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-23 02:53:28,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:53:28,538 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 10 treesize of output 8 [2022-11-23 02:53:28,610 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-23 02:53:28,611 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-23 02:53:28,661 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-23 02:53:28,803 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 36 treesize of output 36 [2022-11-23 02:53:29,008 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-23 02:53:29,009 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 46 [2022-11-23 02:53:29,075 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 42 treesize of output 15 [2022-11-23 02:53:29,187 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-23 02:53:29,187 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:53:29,187 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 02:53:29,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [860865947] [2022-11-23 02:53:29,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [860865947] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:53:29,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:53:29,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-23 02:53:29,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630506074] [2022-11-23 02:53:29,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:53:29,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 02:53:29,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 02:53:29,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 02:53:29,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-23 02:53:29,189 INFO L87 Difference]: Start difference. First operand 273 states and 309 transitions. Second operand has 9 states, 8 states have (on average 3.5) internal successors, (28), 9 states have internal predecessors, (28), 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) [2022-11-23 02:53:32,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:53:32,694 INFO L93 Difference]: Finished difference Result 296 states and 333 transitions. [2022-11-23 02:53:32,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-23 02:53:32,694 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 9 states have internal predecessors, (28), 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 66 [2022-11-23 02:53:32,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:53:32,696 INFO L225 Difference]: With dead ends: 296 [2022-11-23 02:53:32,696 INFO L226 Difference]: Without dead ends: 296 [2022-11-23 02:53:32,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2022-11-23 02:53:32,697 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 270 mSDsluCounter, 751 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 913 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-23 02:53:32,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 913 Invalid, 553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-23 02:53:32,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2022-11-23 02:53:32,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 282. [2022-11-23 02:53:32,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 204 states have (on average 1.5686274509803921) internal successors, (320), 278 states have internal predecessors, (320), 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) [2022-11-23 02:53:32,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 324 transitions. [2022-11-23 02:53:32,704 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 324 transitions. Word has length 66 [2022-11-23 02:53:32,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:53:32,705 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 324 transitions. [2022-11-23 02:53:32,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 9 states have internal predecessors, (28), 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) [2022-11-23 02:53:32,705 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 324 transitions. [2022-11-23 02:53:32,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-23 02:53:32,706 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:53:32,706 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:53:32,734 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 02:53:32,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 02:53:32,907 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-23 02:53:32,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:53:32,907 INFO L85 PathProgramCache]: Analyzing trace with hash 379730105, now seen corresponding path program 1 times [2022-11-23 02:53:32,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 02:53:32,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1449926851] [2022-11-23 02:53:32,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:53:32,908 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 [2022-11-23 02:53:32,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 02:53:32,911 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/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) [2022-11-23 02:53:32,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/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)] Waiting until timeout for monitored process [2022-11-23 02:53:33,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:53:33,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-23 02:53:33,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:53:33,528 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 10 treesize of output 8 [2022-11-23 02:53:33,582 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-23 02:53:33,583 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 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 [2022-11-23 02:53:33,592 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2022-11-23 02:53:33,631 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-23 02:53:33,648 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-23 02:53:33,806 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 34 treesize of output 34 [2022-11-23 02:53:33,831 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 21 [2022-11-23 02:53:34,029 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-23 02:53:34,030 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 57 [2022-11-23 02:53:34,052 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 28 treesize of output 30 [2022-11-23 02:53:34,200 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 40 treesize of output 13 [2022-11-23 02:53:34,210 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 25 treesize of output 7 [2022-11-23 02:53:34,254 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-23 02:53:34,254 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:53:34,254 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-23 02:53:34,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1449926851] [2022-11-23 02:53:34,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1449926851] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:53:34,255 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:53:34,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-23 02:53:34,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212078494] [2022-11-23 02:53:34,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:53:34,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-23 02:53:34,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-23 02:53:34,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-23 02:53:34,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-23 02:53:34,257 INFO L87 Difference]: Start difference. First operand 282 states and 324 transitions. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 10 states have internal predecessors, (28), 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) [2022-11-23 02:53:37,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:53:37,326 INFO L93 Difference]: Finished difference Result 294 states and 328 transitions. [2022-11-23 02:53:37,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-23 02:53:37,327 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 10 states have internal predecessors, (28), 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 66 [2022-11-23 02:53:37,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:53:37,328 INFO L225 Difference]: With dead ends: 294 [2022-11-23 02:53:37,328 INFO L226 Difference]: Without dead ends: 294 [2022-11-23 02:53:37,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2022-11-23 02:53:37,329 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 485 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 643 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-23 02:53:37,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [486 Valid, 643 Invalid, 611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 602 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-23 02:53:37,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2022-11-23 02:53:37,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 282. [2022-11-23 02:53:37,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 204 states have (on average 1.5490196078431373) internal successors, (316), 278 states have internal predecessors, (316), 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) [2022-11-23 02:53:37,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 320 transitions. [2022-11-23 02:53:37,336 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 320 transitions. Word has length 66 [2022-11-23 02:53:37,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:53:37,337 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 320 transitions. [2022-11-23 02:53:37,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 10 states have internal predecessors, (28), 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) [2022-11-23 02:53:37,337 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 320 transitions. [2022-11-23 02:53:37,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-23 02:53:37,344 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:53:37,344 INFO L195 NwaCegarLoop]: trace histogram [10, 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, 1, 1, 1, 1, 1] [2022-11-23 02:53:37,370 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/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)] Forceful destruction successful, exit code 0 [2022-11-23 02:53:37,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 02:53:37,565 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 89 more)] === [2022-11-23 02:53:37,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:53:37,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1974317589, now seen corresponding path program 1 times [2022-11-23 02:53:37,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-23 02:53:37,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [946600375] [2022-11-23 02:53:37,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:53:37,567 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 [2022-11-23 02:53:37,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/mathsat [2022-11-23 02:53:37,568 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/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) [2022-11-23 02:53:37,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_121a7c18-bf15-4e87-81b7-d27cc3477e30/bin/uautomizer-QkZJyEgLgS/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 [2022-11-23 02:53:38,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:53:38,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-23 02:53:38,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:53:38,213 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 10 treesize of output 8 [2022-11-23 02:53:38,274 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-23 02:53:38,275 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-23 02:53:38,319 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-11-23 02:53:38,491 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 36 treesize of output 36 [2022-11-23 02:53:38,760 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-23 02:53:38,761 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 46 [2022-11-23 02:53:38,948 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-23 02:53:38,948 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 46 [2022-11-23 02:53:39,031 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 42 treesize of output 15 [2022-11-23 02:53:39,141 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2022-11-23 02:53:39,141 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:53:41,491 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_978 (Array (_ BitVec 64) (_ BitVec 64)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse0) v_ArrVal_978) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse0)))))) is different from false [2022-11-23 02:53:41,545 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_977 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_978 (Array (_ BitVec 64) (_ BitVec 64)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem122#1.base| v_ArrVal_977))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) v_ArrVal_978)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2022-11-23 02:53:41,573 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_977 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_978 (Array (_ BitVec 64) (_ BitVec 64)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) v_ArrVal_977))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) v_ArrVal_978)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2022-11-23 02:53:41,621 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_977 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_976 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_978 (Array (_ BitVec 64) (_ BitVec 64)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base| v_ArrVal_976))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) v_ArrVal_977)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) v_ArrVal_978)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2022-11-23 02:53:41,687 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 02:53:41,687 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 116 treesize of output 78 [2022-11-23 02:53:41,698 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 8799 treesize of output 7026 [2022-11-23 02:53:41,816 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 7022 treesize of output 6798 [2022-11-23 02:53:41,867 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 6798 treesize of output 5426 [2022-11-23 02:53:41,921 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 5426 treesize of output 4530