./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 b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/busybox-1.22.0/basename-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba --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 Taipan --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-b5237d8 [2022-11-22 02:06:16,174 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 02:06:16,176 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 02:06:16,214 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 02:06:16,215 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 02:06:16,218 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 02:06:16,221 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 02:06:16,224 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 02:06:16,226 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 02:06:16,232 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 02:06:16,233 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 02:06:16,235 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 02:06:16,236 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 02:06:16,238 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 02:06:16,240 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 02:06:16,243 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 02:06:16,244 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 02:06:16,245 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 02:06:16,247 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 02:06:16,254 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 02:06:16,256 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 02:06:16,259 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 02:06:16,260 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 02:06:16,261 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 02:06:16,271 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 02:06:16,272 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 02:06:16,272 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 02:06:16,274 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 02:06:16,275 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 02:06:16,276 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 02:06:16,276 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 02:06:16,277 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 02:06:16,279 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 02:06:16,280 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 02:06:16,281 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 02:06:16,281 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 02:06:16,282 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 02:06:16,282 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 02:06:16,283 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 02:06:16,284 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 02:06:16,285 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 02:06:16,286 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf [2022-11-22 02:06:16,331 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 02:06:16,334 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 02:06:16,335 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 02:06:16,335 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 02:06:16,336 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 02:06:16,336 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 02:06:16,336 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 02:06:16,337 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 02:06:16,337 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 02:06:16,337 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 02:06:16,338 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 02:06:16,339 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 02:06:16,339 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 02:06:16,339 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 02:06:16,339 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 02:06:16,340 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 02:06:16,340 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 02:06:16,340 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 02:06:16,341 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-22 02:06:16,341 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-22 02:06:16,341 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 02:06:16,342 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-22 02:06:16,342 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 02:06:16,342 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 02:06:16,343 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-22 02:06:16,343 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-22 02:06:16,343 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-22 02:06:16,344 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 02:06:16,344 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-22 02:06:16,344 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 02:06:16,345 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 02:06:16,345 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 02:06:16,345 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:06:16,345 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 02:06:16,346 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 02:06:16,346 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 02:06:16,346 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 02:06:16,346 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 02:06:16,346 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 02:06:16,347 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 65aca230ed2b7a8b5f7f2ccd484c93b0425fe4f5fb1895001f199a0c2754f5f4 [2022-11-22 02:06:16,606 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 02:06:16,638 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 02:06:16,641 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 02:06:16,642 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 02:06:16,643 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 02:06:16,644 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/busybox-1.22.0/basename-1.i [2022-11-22 02:06:19,621 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 02:06:20,014 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 02:06:20,015 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/sv-benchmarks/c/busybox-1.22.0/basename-1.i [2022-11-22 02:06:20,038 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/data/05bdb51d3/91a7ecc1b4664ad1ac4f9db604694263/FLAG56ee2ace2 [2022-11-22 02:06:20,066 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/data/05bdb51d3/91a7ecc1b4664ad1ac4f9db604694263 [2022-11-22 02:06:20,069 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 02:06:20,072 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 02:06:20,075 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 02:06:20,075 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 02:06:20,080 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 02:06:20,081 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:06:20" (1/1) ... [2022-11-22 02:06:20,082 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@693235aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:06:20, skipping insertion in model container [2022-11-22 02:06:20,083 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:06:20" (1/1) ... [2022-11-22 02:06:20,090 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 02:06:20,154 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 02:06:20,875 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_f21e3d3f-840c-4ace-af27-b994be0019d8/sv-benchmarks/c/busybox-1.22.0/basename-1.i[58057,58070] [2022-11-22 02:06:20,941 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:06:20,955 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) [2022-11-22 02:06:20,956 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@bb4dee7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:06:20, skipping insertion in model container [2022-11-22 02:06:20,956 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 02:06:20,956 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-22 02:06:20,958 INFO L158 Benchmark]: Toolchain (without parser) took 885.34ms. Allocated memory is still 146.8MB. Free memory was 111.5MB in the beginning and 91.4MB in the end (delta: 20.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-22 02:06:20,959 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 146.8MB. Free memory was 85.4MB in the beginning and 85.3MB in the end (delta: 120.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 02:06:20,959 INFO L158 Benchmark]: CACSL2BoogieTranslator took 881.40ms. Allocated memory is still 146.8MB. Free memory was 111.5MB in the beginning and 91.4MB in the end (delta: 20.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-22 02:06:20,961 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 146.8MB. Free memory was 85.4MB in the beginning and 85.3MB in the end (delta: 120.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 881.40ms. Allocated memory is still 146.8MB. Free memory was 111.5MB in the beginning and 91.4MB in the end (delta: 20.1MB). Peak memory consumption was 21.0MB. 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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/busybox-1.22.0/basename-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba --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 Taipan --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-b5237d8 [2022-11-22 02:06:23,310 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 02:06:23,313 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 02:06:23,355 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 02:06:23,356 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 02:06:23,357 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 02:06:23,359 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 02:06:23,360 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 02:06:23,362 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 02:06:23,363 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 02:06:23,364 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 02:06:23,365 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 02:06:23,365 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 02:06:23,366 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 02:06:23,368 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 02:06:23,369 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 02:06:23,370 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 02:06:23,371 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 02:06:23,372 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 02:06:23,374 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 02:06:23,376 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 02:06:23,377 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 02:06:23,378 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 02:06:23,379 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 02:06:23,382 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 02:06:23,383 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 02:06:23,383 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 02:06:23,384 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 02:06:23,385 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 02:06:23,386 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 02:06:23,386 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 02:06:23,387 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 02:06:23,388 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 02:06:23,389 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 02:06:23,390 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 02:06:23,390 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 02:06:23,391 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 02:06:23,391 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 02:06:23,392 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 02:06:23,393 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 02:06:23,393 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 02:06:23,398 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Bitvector.epf [2022-11-22 02:06:23,436 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 02:06:23,437 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 02:06:23,438 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 02:06:23,438 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 02:06:23,439 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 02:06:23,439 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 02:06:23,439 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 02:06:23,440 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 02:06:23,440 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 02:06:23,440 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 02:06:23,441 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 02:06:23,441 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 02:06:23,442 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-22 02:06:23,442 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-22 02:06:23,443 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 02:06:23,443 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-22 02:06:23,443 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 02:06:23,443 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 02:06:23,444 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-22 02:06:23,444 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-22 02:06:23,444 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-22 02:06:23,444 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 02:06:23,444 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-22 02:06:23,445 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-22 02:06:23,445 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-22 02:06:23,445 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 02:06:23,445 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 02:06:23,446 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-22 02:06:23,446 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 02:06:23,446 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:06:23,446 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 02:06:23,447 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 02:06:23,447 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-22 02:06:23,447 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-22 02:06:23,447 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 02:06:23,447 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-22 02:06:23,448 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 65aca230ed2b7a8b5f7f2ccd484c93b0425fe4f5fb1895001f199a0c2754f5f4 [2022-11-22 02:06:23,845 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 02:06:23,879 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 02:06:23,882 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 02:06:23,883 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 02:06:23,884 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 02:06:23,885 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/busybox-1.22.0/basename-1.i [2022-11-22 02:06:27,264 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 02:06:27,655 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 02:06:27,659 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/sv-benchmarks/c/busybox-1.22.0/basename-1.i [2022-11-22 02:06:27,687 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/data/a410d4ee7/3f122d60a58a4c86825b23efe70a44d8/FLAG9164da9ea [2022-11-22 02:06:27,707 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/data/a410d4ee7/3f122d60a58a4c86825b23efe70a44d8 [2022-11-22 02:06:27,709 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 02:06:27,711 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 02:06:27,713 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 02:06:27,713 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 02:06:27,716 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 02:06:27,717 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:06:27" (1/1) ... [2022-11-22 02:06:27,718 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4be8f9e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:06:27, skipping insertion in model container [2022-11-22 02:06:27,719 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:06:27" (1/1) ... [2022-11-22 02:06:27,726 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 02:06:27,783 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 02:06:28,441 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_f21e3d3f-840c-4ace-af27-b994be0019d8/sv-benchmarks/c/busybox-1.22.0/basename-1.i[58057,58070] [2022-11-22 02:06:28,502 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:06:28,530 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-22 02:06:28,546 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 02:06:28,586 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_f21e3d3f-840c-4ace-af27-b994be0019d8/sv-benchmarks/c/busybox-1.22.0/basename-1.i[58057,58070] [2022-11-22 02:06:28,618 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:06:28,625 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 02:06:28,696 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_f21e3d3f-840c-4ace-af27-b994be0019d8/sv-benchmarks/c/busybox-1.22.0/basename-1.i[58057,58070] [2022-11-22 02:06:28,745 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:06:28,848 INFO L208 MainTranslator]: Completed translation [2022-11-22 02:06:28,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:06:28 WrapperNode [2022-11-22 02:06:28,849 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 02:06:28,851 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 02:06:28,851 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 02:06:28,852 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 02:06:28,859 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:06:28" (1/1) ... [2022-11-22 02:06:28,914 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:06:28" (1/1) ... [2022-11-22 02:06:28,963 INFO L138 Inliner]: procedures = 352, calls = 112, calls flagged for inlining = 11, calls inlined = 10, statements flattened = 367 [2022-11-22 02:06:28,963 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 02:06:28,964 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 02:06:28,964 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 02:06:28,965 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 02:06:28,988 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:06:28" (1/1) ... [2022-11-22 02:06:28,989 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:06:28" (1/1) ... [2022-11-22 02:06:28,994 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:06:28" (1/1) ... [2022-11-22 02:06:28,995 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:06:28" (1/1) ... [2022-11-22 02:06:29,012 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:06:28" (1/1) ... [2022-11-22 02:06:29,017 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:06:28" (1/1) ... [2022-11-22 02:06:29,023 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:06:28" (1/1) ... [2022-11-22 02:06:29,026 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:06:28" (1/1) ... [2022-11-22 02:06:29,033 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 02:06:29,034 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 02:06:29,034 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 02:06:29,034 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 02:06:29,035 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:06:28" (1/1) ... [2022-11-22 02:06:29,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:06:29,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:06:29,095 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 02:06:29,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 02:06:29,136 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-22 02:06:29,136 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-22 02:06:29,136 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-22 02:06:29,136 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-22 02:06:29,137 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-22 02:06:29,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-11-22 02:06:29,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 02:06:29,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-22 02:06:29,137 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-22 02:06:29,137 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2022-11-22 02:06:29,137 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 02:06:29,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-22 02:06:29,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 02:06:29,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 02:06:29,506 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 02:06:29,511 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 02:06:31,067 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 02:06:31,079 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 02:06:31,080 INFO L300 CfgBuilder]: Removed 9 assume(true) statements. [2022-11-22 02:06:31,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:06:31 BoogieIcfgContainer [2022-11-22 02:06:31,083 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 02:06:31,086 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 02:06:31,086 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 02:06:31,090 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 02:06:31,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:06:27" (1/3) ... [2022-11-22 02:06:31,092 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66dd18b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:06:31, skipping insertion in model container [2022-11-22 02:06:31,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:06:28" (2/3) ... [2022-11-22 02:06:31,093 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66dd18b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:06:31, skipping insertion in model container [2022-11-22 02:06:31,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:06:31" (3/3) ... [2022-11-22 02:06:31,095 INFO L112 eAbstractionObserver]: Analyzing ICFG basename-1.i [2022-11-22 02:06:31,115 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 02:06:31,115 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 92 error locations. [2022-11-22 02:06:31,163 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 02:06:31,170 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@578fcb06, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 02:06:31,171 INFO L358 AbstractCegarLoop]: Starting to check reachability of 92 error locations. [2022-11-22 02:06:31,176 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) [2022-11-22 02:06:31,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-22 02:06:31,182 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:06:31,182 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-22 02:06:31,183 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)] === [2022-11-22 02:06:31,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:06:31,189 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2022-11-22 02:06:31,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 02:06:31,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [151071525] [2022-11-22 02:06:31,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:06:31,208 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:06:31,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 02:06:31,221 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/mathsat -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) [2022-11-22 02:06:31,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/mathsat -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 [2022-11-22 02:06:31,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:06:31,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-22 02:06:31,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:06:31,491 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 [2022-11-22 02:06:31,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:06:31,504 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:06:31,505 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 02:06:31,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [151071525] [2022-11-22 02:06:31,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [151071525] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:06:31,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:06:31,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 02:06:31,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114200942] [2022-11-22 02:06:31,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:06:31,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:06:31,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 02:06:31,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:06:31,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:06:31,545 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) [2022-11-22 02:06:32,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:06:32,085 INFO L93 Difference]: Finished difference Result 248 states and 279 transitions. [2022-11-22 02:06:32,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:06:32,088 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 [2022-11-22 02:06:32,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:06:32,097 INFO L225 Difference]: With dead ends: 248 [2022-11-22 02:06:32,098 INFO L226 Difference]: Without dead ends: 246 [2022-11-22 02:06:32,099 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 [2022-11-22 02:06:32,103 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 [2022-11-22 02:06:32,104 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] [2022-11-22 02:06:32,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2022-11-22 02:06:32,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 230. [2022-11-22 02:06:32,148 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) [2022-11-22 02:06:32,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 260 transitions. [2022-11-22 02:06:32,152 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 260 transitions. Word has length 3 [2022-11-22 02:06:32,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:06:32,152 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 260 transitions. [2022-11-22 02:06:32,153 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) [2022-11-22 02:06:32,153 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 260 transitions. [2022-11-22 02:06:32,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-22 02:06:32,153 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:06:32,153 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-22 02:06:32,174 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/mathsat -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 [2022-11-22 02:06:32,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:06:32,368 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)] === [2022-11-22 02:06:32,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:06:32,369 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2022-11-22 02:06:32,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 02:06:32,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [925509698] [2022-11-22 02:06:32,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:06:32,371 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 [2022-11-22 02:06:32,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 02:06:32,372 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/mathsat -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) [2022-11-22 02:06:32,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/mathsat -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 [2022-11-22 02:06:32,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:06:32,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-22 02:06:32,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:06:32,589 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 [2022-11-22 02:06:32,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:06:32,603 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:06:32,604 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 02:06:32,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [925509698] [2022-11-22 02:06:32,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [925509698] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:06:32,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:06:32,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 02:06:32,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112885071] [2022-11-22 02:06:32,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:06:32,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:06:32,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 02:06:32,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:06:32,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:06:32,607 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) [2022-11-22 02:06:33,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:06:33,516 INFO L93 Difference]: Finished difference Result 229 states and 259 transitions. [2022-11-22 02:06:33,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:06:33,517 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 [2022-11-22 02:06:33,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:06:33,518 INFO L225 Difference]: With dead ends: 229 [2022-11-22 02:06:33,519 INFO L226 Difference]: Without dead ends: 229 [2022-11-22 02:06:33,519 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 [2022-11-22 02:06:33,520 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 9 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 0.9s IncrementalHoareTripleChecker+Time [2022-11-22 02:06:33,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 420 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-22 02:06:33,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2022-11-22 02:06:33,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2022-11-22 02:06:33,535 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) [2022-11-22 02:06:33,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 259 transitions. [2022-11-22 02:06:33,538 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 259 transitions. Word has length 3 [2022-11-22 02:06:33,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:06:33,538 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 259 transitions. [2022-11-22 02:06:33,538 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) [2022-11-22 02:06:33,538 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 259 transitions. [2022-11-22 02:06:33,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-22 02:06:33,539 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:06:33,539 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-22 02:06:33,557 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/mathsat -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 [2022-11-22 02:06:33,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:06:33,753 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)] === [2022-11-22 02:06:33,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:06:33,753 INFO L85 PathProgramCache]: Analyzing trace with hash 889446313, now seen corresponding path program 1 times [2022-11-22 02:06:33,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 02:06:33,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1521230218] [2022-11-22 02:06:33,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:06:33,755 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 [2022-11-22 02:06:33,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 02:06:33,757 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/mathsat -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) [2022-11-22 02:06:33,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/mathsat -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 [2022-11-22 02:06:34,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:06:34,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-22 02:06:34,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:06:34,025 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 [2022-11-22 02:06:34,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:06:34,089 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:06:34,089 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 02:06:34,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1521230218] [2022-11-22 02:06:34,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1521230218] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:06:34,090 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:06:34,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:06:34,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082109892] [2022-11-22 02:06:34,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:06:34,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 02:06:34,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 02:06:34,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 02:06:34,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-22 02:06:34,092 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) [2022-11-22 02:06:35,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:06:35,209 INFO L93 Difference]: Finished difference Result 233 states and 263 transitions. [2022-11-22 02:06:35,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 02:06:35,210 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 [2022-11-22 02:06:35,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:06:35,212 INFO L225 Difference]: With dead ends: 233 [2022-11-22 02:06:35,212 INFO L226 Difference]: Without dead ends: 233 [2022-11-22 02:06:35,212 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 [2022-11-22 02:06:35,213 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 [2022-11-22 02:06:35,214 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] [2022-11-22 02:06:35,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2022-11-22 02:06:35,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 231. [2022-11-22 02:06:35,223 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) [2022-11-22 02:06:35,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 261 transitions. [2022-11-22 02:06:35,225 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 261 transitions. Word has length 6 [2022-11-22 02:06:35,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:06:35,225 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 261 transitions. [2022-11-22 02:06:35,225 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) [2022-11-22 02:06:35,225 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 261 transitions. [2022-11-22 02:06:35,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-22 02:06:35,226 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:06:35,226 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:06:35,241 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/mathsat -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 [2022-11-22 02:06:35,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:06:35,437 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)] === [2022-11-22 02:06:35,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:06:35,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1261842348, now seen corresponding path program 1 times [2022-11-22 02:06:35,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 02:06:35,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [623216464] [2022-11-22 02:06:35,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:06:35,439 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 [2022-11-22 02:06:35,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 02:06:35,440 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/mathsat -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) [2022-11-22 02:06:35,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/mathsat -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 [2022-11-22 02:06:35,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:06:35,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-22 02:06:35,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:06:35,629 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 [2022-11-22 02:06:35,764 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:06:35,764 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:06:36,604 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:06:36,604 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 02:06:36,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [623216464] [2022-11-22 02:06:36,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [623216464] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:06:36,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [952070625] [2022-11-22 02:06:36,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:06:36,605 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-22 02:06:36,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/cvc4 [2022-11-22 02:06:36,614 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-22 02:06:36,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2022-11-22 02:06:37,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:06:37,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-22 02:06:37,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:06:37,037 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 [2022-11-22 02:06:37,126 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:06:37,127 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:06:37,514 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:06:37,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [952070625] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:06:37,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094679637] [2022-11-22 02:06:37,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:06:37,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:06:37,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:06:37,521 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:06:37,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-22 02:06:37,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:06:37,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-22 02:06:37,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:06:37,708 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 [2022-11-22 02:06:37,805 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:06:37,805 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:06:38,144 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:06:38,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2094679637] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:06:38,144 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-22 02:06:38,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 7 [2022-11-22 02:06:38,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625195478] [2022-11-22 02:06:38,145 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-22 02:06:38,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 02:06:38,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 02:06:38,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 02:06:38,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:06:38,146 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) [2022-11-22 02:06:42,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:06:42,753 INFO L93 Difference]: Finished difference Result 237 states and 267 transitions. [2022-11-22 02:06:42,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 02:06:42,755 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 [2022-11-22 02:06:42,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:06:42,757 INFO L225 Difference]: With dead ends: 237 [2022-11-22 02:06:42,757 INFO L226 Difference]: Without dead ends: 237 [2022-11-22 02:06:42,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2022-11-22 02:06:42,758 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 38 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s 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, 4.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:06:42,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 752 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-11-22 02:06:42,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2022-11-22 02:06:42,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2022-11-22 02:06:42,773 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) [2022-11-22 02:06:42,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 267 transitions. [2022-11-22 02:06:42,775 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 267 transitions. Word has length 10 [2022-11-22 02:06:42,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:06:42,775 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 267 transitions. [2022-11-22 02:06:42,775 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) [2022-11-22 02:06:42,776 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 267 transitions. [2022-11-22 02:06:42,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-22 02:06:42,776 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:06:42,777 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:06:42,786 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2022-11-22 02:06:42,990 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/mathsat -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 [2022-11-22 02:06:43,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-22 02:06:43,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:06:43,382 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)] === [2022-11-22 02:06:43,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:06:43,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1887063184, now seen corresponding path program 1 times [2022-11-22 02:06:43,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 02:06:43,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [84484068] [2022-11-22 02:06:43,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:06:43,383 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 [2022-11-22 02:06:43,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 02:06:43,385 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/mathsat -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) [2022-11-22 02:06:43,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/mathsat -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 [2022-11-22 02:06:43,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:06:43,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-22 02:06:43,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:06:43,660 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:06:43,661 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:06:43,772 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:06:43,772 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 02:06:43,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [84484068] [2022-11-22 02:06:43,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [84484068] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:06:43,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [227087052] [2022-11-22 02:06:43,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:06:43,773 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-22 02:06:43,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/cvc4 [2022-11-22 02:06:43,777 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-22 02:06:43,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2022-11-22 02:06:44,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:06:44,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-22 02:06:44,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:06:44,237 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:06:44,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:06:44,287 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:06:44,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [227087052] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:06:44,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1937393266] [2022-11-22 02:06:44,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:06:44,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:06:44,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:06:44,289 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:06:44,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-22 02:06:44,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:06:44,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-22 02:06:44,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:06:44,523 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 [2022-11-22 02:06:44,740 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 14 treesize of output 10 [2022-11-22 02:06:44,749 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:06:44,750 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:06:45,510 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:06:45,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1937393266] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:06:45,510 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-22 02:06:45,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 8, 8] total 18 [2022-11-22 02:06:45,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157027153] [2022-11-22 02:06:45,511 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-22 02:06:45,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-22 02:06:45,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 02:06:45,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-22 02:06:45,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2022-11-22 02:06:45,513 INFO L87 Difference]: Start difference. First operand 237 states and 267 transitions. Second operand has 18 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 18 states have internal predecessors, (64), 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) [2022-11-22 02:06:52,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:06:52,261 INFO L93 Difference]: Finished difference Result 438 states and 496 transitions. [2022-11-22 02:06:52,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-22 02:06:52,263 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 18 states have internal predecessors, (64), 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 [2022-11-22 02:06:52,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:06:52,265 INFO L225 Difference]: With dead ends: 438 [2022-11-22 02:06:52,266 INFO L226 Difference]: Without dead ends: 438 [2022-11-22 02:06:52,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=195, Invalid=405, Unknown=0, NotChecked=0, Total=600 [2022-11-22 02:06:52,269 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 727 mSDsluCounter, 1326 mSDsCounter, 0 mSdLazyCounter, 745 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 727 SdHoareTripleChecker+Valid, 1517 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:06:52,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [727 Valid, 1517 Invalid, 777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 745 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2022-11-22 02:06:52,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2022-11-22 02:06:52,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 257. [2022-11-22 02:06:52,283 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) [2022-11-22 02:06:52,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 287 transitions. [2022-11-22 02:06:52,285 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 287 transitions. Word has length 25 [2022-11-22 02:06:52,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:06:52,285 INFO L495 AbstractCegarLoop]: Abstraction has 257 states and 287 transitions. [2022-11-22 02:06:52,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 18 states have internal predecessors, (64), 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) [2022-11-22 02:06:52,286 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 287 transitions. [2022-11-22 02:06:52,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-22 02:06:52,287 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:06:52,287 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:06:52,304 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-22 02:06:52,507 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-11-22 02:06:52,703 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2022-11-22 02:06:52,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt [2022-11-22 02:06:52,900 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)] === [2022-11-22 02:06:52,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:06:52,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1620022495, now seen corresponding path program 2 times [2022-11-22 02:06:52,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 02:06:52,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1380017734] [2022-11-22 02:06:52,902 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-22 02:06:52,902 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 [2022-11-22 02:06:52,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 02:06:52,903 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/mathsat -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) [2022-11-22 02:06:52,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/mathsat -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 [2022-11-22 02:06:53,121 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-22 02:06:53,121 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 02:06:53,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-22 02:06:53,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:06:53,171 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-22 02:06:53,172 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 [2022-11-22 02:06:53,238 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2022-11-22 02:06:53,238 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:06:53,239 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 02:06:53,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1380017734] [2022-11-22 02:06:53,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1380017734] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:06:53,239 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:06:53,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 02:06:53,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580408659] [2022-11-22 02:06:53,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:06:53,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:06:53,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 02:06:53,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:06:53,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:06:53,241 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) [2022-11-22 02:06:53,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:06:53,820 INFO L93 Difference]: Finished difference Result 268 states and 299 transitions. [2022-11-22 02:06:53,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:06:53,821 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 [2022-11-22 02:06:53,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:06:53,822 INFO L225 Difference]: With dead ends: 268 [2022-11-22 02:06:53,822 INFO L226 Difference]: Without dead ends: 268 [2022-11-22 02:06:53,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:06:53,823 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, 0.6s IncrementalHoareTripleChecker+Time [2022-11-22 02:06:53,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 204 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-22 02:06:53,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2022-11-22 02:06:53,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 252. [2022-11-22 02:06:53,831 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) [2022-11-22 02:06:53,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 282 transitions. [2022-11-22 02:06:53,832 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 282 transitions. Word has length 45 [2022-11-22 02:06:53,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:06:53,833 INFO L495 AbstractCegarLoop]: Abstraction has 252 states and 282 transitions. [2022-11-22 02:06:53,833 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) [2022-11-22 02:06:53,833 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 282 transitions. [2022-11-22 02:06:53,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-22 02:06:53,834 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:06:53,835 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:06:53,861 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/mathsat -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 [2022-11-22 02:06:54,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:06:54,058 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)] === [2022-11-22 02:06:54,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:06:54,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1620022494, now seen corresponding path program 1 times [2022-11-22 02:06:54,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 02:06:54,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2062659577] [2022-11-22 02:06:54,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:06:54,059 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 [2022-11-22 02:06:54,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 02:06:54,060 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/mathsat -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) [2022-11-22 02:06:54,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/mathsat -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 [2022-11-22 02:06:54,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:06:54,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-22 02:06:54,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:06:54,465 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:06:54,465 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:06:54,824 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:06:54,824 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 02:06:54,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2062659577] [2022-11-22 02:06:54,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2062659577] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:06:54,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1016383716] [2022-11-22 02:06:54,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:06:54,825 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-22 02:06:54,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/cvc4 [2022-11-22 02:06:54,829 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-22 02:06:54,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2022-11-22 02:06:55,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:06:55,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-22 02:06:55,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:06:55,505 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:06:55,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:06:55,610 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:06:55,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1016383716] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:06:55,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853173684] [2022-11-22 02:06:55,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:06:55,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:06:55,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:06:55,613 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:06:55,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-22 02:06:55,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:06:55,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-22 02:06:55,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:06:55,875 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 [2022-11-22 02:06:56,556 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 14 treesize of output 10 [2022-11-22 02:06:56,566 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:06:56,566 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:07:03,867 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:07:03,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1853173684] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:07:03,867 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-22 02:07:03,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11, 11, 13, 13] total 38 [2022-11-22 02:07:03,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774954883] [2022-11-22 02:07:03,868 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-22 02:07:03,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-22 02:07:03,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 02:07:03,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-22 02:07:03,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=371, Invalid=1035, Unknown=0, NotChecked=0, Total=1406 [2022-11-22 02:07:03,870 INFO L87 Difference]: Start difference. First operand 252 states and 282 transitions. Second operand has 38 states, 38 states have (on average 3.789473684210526) internal successors, (144), 38 states have internal predecessors, (144), 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) [2022-11-22 02:07:35,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:07:35,345 INFO L93 Difference]: Finished difference Result 473 states and 532 transitions. [2022-11-22 02:07:35,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-22 02:07:35,348 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.789473684210526) internal successors, (144), 38 states have internal predecessors, (144), 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 [2022-11-22 02:07:35,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:07:35,350 INFO L225 Difference]: With dead ends: 473 [2022-11-22 02:07:35,350 INFO L226 Difference]: Without dead ends: 473 [2022-11-22 02:07:35,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 585 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=617, Invalid=1933, Unknown=0, NotChecked=0, Total=2550 [2022-11-22 02:07:35,352 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 1857 mSDsluCounter, 3681 mSDsCounter, 0 mSdLazyCounter, 2075 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1857 SdHoareTripleChecker+Valid, 3871 SdHoareTripleChecker+Invalid, 2149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 2075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:07:35,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1857 Valid, 3871 Invalid, 2149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 2075 Invalid, 0 Unknown, 0 Unchecked, 24.1s Time] [2022-11-22 02:07:35,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2022-11-22 02:07:35,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 292. [2022-11-22 02:07:35,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 208 states have (on average 1.5336538461538463) internal successors, (319), 288 states have internal predecessors, (319), 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) [2022-11-22 02:07:35,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 323 transitions. [2022-11-22 02:07:35,362 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 323 transitions. Word has length 45 [2022-11-22 02:07:35,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:07:35,362 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 323 transitions. [2022-11-22 02:07:35,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.789473684210526) internal successors, (144), 38 states have internal predecessors, (144), 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) [2022-11-22 02:07:35,363 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 323 transitions. [2022-11-22 02:07:35,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-22 02:07:35,364 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:07:35,364 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:07:35,375 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-22 02:07:35,586 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/mathsat -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 [2022-11-22 02:07:35,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2022-11-22 02:07:35,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt [2022-11-22 02:07:35,975 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)] === [2022-11-22 02:07:35,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:07:35,976 INFO L85 PathProgramCache]: Analyzing trace with hash 501144028, now seen corresponding path program 2 times [2022-11-22 02:07:35,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 02:07:35,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1919076456] [2022-11-22 02:07:35,977 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-22 02:07:35,977 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 [2022-11-22 02:07:35,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 02:07:35,978 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/mathsat -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) [2022-11-22 02:07:35,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/mathsat -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 [2022-11-22 02:07:36,202 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-22 02:07:36,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 02:07:36,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-22 02:07:36,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:07:36,288 INFO L321 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2022-11-22 02:07:36,289 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 [2022-11-22 02:07:36,420 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-22 02:07:36,420 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:07:36,421 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 02:07:36,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1919076456] [2022-11-22 02:07:36,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1919076456] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:07:36,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:07:36,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:07:36,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10514895] [2022-11-22 02:07:36,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:07:36,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 02:07:36,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 02:07:36,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 02:07:36,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-22 02:07:36,423 INFO L87 Difference]: Start difference. First operand 292 states and 323 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) [2022-11-22 02:07:38,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:07:38,253 INFO L93 Difference]: Finished difference Result 471 states and 530 transitions. [2022-11-22 02:07:38,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:07:38,255 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 [2022-11-22 02:07:38,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:07:38,257 INFO L225 Difference]: With dead ends: 471 [2022-11-22 02:07:38,257 INFO L226 Difference]: Without dead ends: 471 [2022-11-22 02:07:38,257 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 [2022-11-22 02:07:38,258 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 [2022-11-22 02:07:38,258 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] [2022-11-22 02:07:38,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2022-11-22 02:07:38,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 395. [2022-11-22 02:07:38,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 311 states have (on average 1.6463022508038585) internal successors, (512), 390 states have internal predecessors, (512), 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) [2022-11-22 02:07:38,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 518 transitions. [2022-11-22 02:07:38,269 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 518 transitions. Word has length 53 [2022-11-22 02:07:38,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:07:38,270 INFO L495 AbstractCegarLoop]: Abstraction has 395 states and 518 transitions. [2022-11-22 02:07:38,270 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) [2022-11-22 02:07:38,270 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 518 transitions. [2022-11-22 02:07:38,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-22 02:07:38,271 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:07:38,271 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] [2022-11-22 02:07:38,285 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/mathsat -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 [2022-11-22 02:07:38,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:07:38,481 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)] === [2022-11-22 02:07:38,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:07:38,481 INFO L85 PathProgramCache]: Analyzing trace with hash 275387719, now seen corresponding path program 1 times [2022-11-22 02:07:38,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 02:07:38,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1824893081] [2022-11-22 02:07:38,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:07:38,482 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 [2022-11-22 02:07:38,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 02:07:38,483 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/mathsat -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) [2022-11-22 02:07:38,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/mathsat -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 [2022-11-22 02:07:38,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:07:38,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-22 02:07:38,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:07:39,080 INFO L321 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2022-11-22 02:07:39,081 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 [2022-11-22 02:07:39,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:07:39,551 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-11-22 02:07:39,551 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 [2022-11-22 02:07:39,584 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-22 02:07:39,585 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 [2022-11-22 02:07:39,816 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-22 02:07:39,817 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:07:39,817 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 02:07:39,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1824893081] [2022-11-22 02:07:39,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1824893081] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:07:39,817 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:07:39,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-22 02:07:39,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798434646] [2022-11-22 02:07:39,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:07:39,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-22 02:07:39,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 02:07:39,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-22 02:07:39,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-11-22 02:07:39,819 INFO L87 Difference]: Start difference. First operand 395 states and 518 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) [2022-11-22 02:07:44,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:07:44,601 INFO L93 Difference]: Finished difference Result 327 states and 360 transitions. [2022-11-22 02:07:44,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-22 02:07:44,602 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 [2022-11-22 02:07:44,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:07:44,604 INFO L225 Difference]: With dead ends: 327 [2022-11-22 02:07:44,604 INFO L226 Difference]: Without dead ends: 327 [2022-11-22 02:07:44,604 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 [2022-11-22 02:07:44,605 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 585 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 585 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-22 02:07:44,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [585 Valid, 520 Invalid, 567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 555 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-11-22 02:07:44,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2022-11-22 02:07:44,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 304. [2022-11-22 02:07:44,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 222 states have (on average 1.5225225225225225) internal successors, (338), 300 states have internal predecessors, (338), 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) [2022-11-22 02:07:44,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 342 transitions. [2022-11-22 02:07:44,613 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 342 transitions. Word has length 56 [2022-11-22 02:07:44,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:07:44,614 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 342 transitions. [2022-11-22 02:07:44,614 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) [2022-11-22 02:07:44,614 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 342 transitions. [2022-11-22 02:07:44,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-22 02:07:44,615 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:07:44,615 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] [2022-11-22 02:07:44,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-22 02:07:44,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:07:44,825 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)] === [2022-11-22 02:07:44,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:07:44,825 INFO L85 PathProgramCache]: Analyzing trace with hash 687983530, now seen corresponding path program 1 times [2022-11-22 02:07:44,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 02:07:44,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [197909358] [2022-11-22 02:07:44,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:07:44,826 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 [2022-11-22 02:07:44,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 02:07:44,827 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/mathsat -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) [2022-11-22 02:07:44,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-22 02:07:45,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:07:45,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-22 02:07:45,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:07:45,429 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-11-22 02:07:45,429 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 [2022-11-22 02:07:45,477 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-22 02:07:45,478 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 [2022-11-22 02:07:45,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:07:45,728 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 [2022-11-22 02:07:45,757 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-22 02:07:45,757 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 [2022-11-22 02:07:45,930 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-22 02:07:45,930 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:07:45,930 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 02:07:45,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [197909358] [2022-11-22 02:07:45,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [197909358] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:07:45,930 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:07:45,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 02:07:45,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799214598] [2022-11-22 02:07:45,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:07:45,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 02:07:45,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 02:07:45,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 02:07:45,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:07:45,932 INFO L87 Difference]: Start difference. First operand 304 states and 342 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) [2022-11-22 02:07:51,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:07:51,096 INFO L93 Difference]: Finished difference Result 321 states and 354 transitions. [2022-11-22 02:07:51,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 02:07:51,097 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 [2022-11-22 02:07:51,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:07:51,099 INFO L225 Difference]: With dead ends: 321 [2022-11-22 02:07:51,100 INFO L226 Difference]: Without dead ends: 321 [2022-11-22 02:07:51,100 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 [2022-11-22 02:07:51,101 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 500 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 668 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 500 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:07:51,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [500 Valid, 636 Invalid, 678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 668 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-11-22 02:07:51,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2022-11-22 02:07:51,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 308. [2022-11-22 02:07:51,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 227 states have (on average 1.5110132158590308) internal successors, (343), 304 states have internal predecessors, (343), 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) [2022-11-22 02:07:51,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 347 transitions. [2022-11-22 02:07:51,109 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 347 transitions. Word has length 59 [2022-11-22 02:07:51,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:07:51,110 INFO L495 AbstractCegarLoop]: Abstraction has 308 states and 347 transitions. [2022-11-22 02:07:51,110 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) [2022-11-22 02:07:51,110 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 347 transitions. [2022-11-22 02:07:51,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-22 02:07:51,111 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:07:51,111 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] [2022-11-22 02:07:51,133 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-22 02:07:51,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:07:51,325 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)] === [2022-11-22 02:07:51,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:07:51,325 INFO L85 PathProgramCache]: Analyzing trace with hash 133394829, now seen corresponding path program 1 times [2022-11-22 02:07:51,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 02:07:51,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [999593062] [2022-11-22 02:07:51,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:07:51,326 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 [2022-11-22 02:07:51,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 02:07:51,327 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/mathsat -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) [2022-11-22 02:07:51,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-22 02:07:51,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:07:51,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-22 02:07:51,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:07:51,911 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 [2022-11-22 02:07:51,947 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 [2022-11-22 02:07:52,125 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-11-22 02:07:52,125 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 [2022-11-22 02:07:52,254 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 11 [2022-11-22 02:07:52,274 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-22 02:07:52,274 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:07:52,274 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 02:07:52,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [999593062] [2022-11-22 02:07:52,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [999593062] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:07:52,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:07:52,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 02:07:52,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927967903] [2022-11-22 02:07:52,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:07:52,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 02:07:52,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 02:07:52,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 02:07:52,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:07:52,277 INFO L87 Difference]: Start difference. First operand 308 states and 347 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) [2022-11-22 02:07:53,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:07:53,777 INFO L93 Difference]: Finished difference Result 306 states and 344 transitions. [2022-11-22 02:07:53,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-22 02:07:53,778 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 [2022-11-22 02:07:53,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:07:53,779 INFO L225 Difference]: With dead ends: 306 [2022-11-22 02:07:53,779 INFO L226 Difference]: Without dead ends: 306 [2022-11-22 02:07:53,779 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 [2022-11-22 02:07:53,780 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 245 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 835 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:07:53,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 835 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-22 02:07:53,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2022-11-22 02:07:53,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 306. [2022-11-22 02:07:53,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 227 states have (on average 1.497797356828194) internal successors, (340), 302 states have internal predecessors, (340), 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) [2022-11-22 02:07:53,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 344 transitions. [2022-11-22 02:07:53,788 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 344 transitions. Word has length 62 [2022-11-22 02:07:53,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:07:53,788 INFO L495 AbstractCegarLoop]: Abstraction has 306 states and 344 transitions. [2022-11-22 02:07:53,788 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) [2022-11-22 02:07:53,788 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 344 transitions. [2022-11-22 02:07:53,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-22 02:07:53,789 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:07:53,790 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] [2022-11-22 02:07:53,813 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2022-11-22 02:07:54,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:07:54,010 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)] === [2022-11-22 02:07:54,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:07:54,010 INFO L85 PathProgramCache]: Analyzing trace with hash 133394830, now seen corresponding path program 1 times [2022-11-22 02:07:54,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 02:07:54,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [700015831] [2022-11-22 02:07:54,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:07:54,012 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 [2022-11-22 02:07:54,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 02:07:54,013 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/mathsat -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) [2022-11-22 02:07:54,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-22 02:07:54,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:07:54,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-22 02:07:54,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:07:54,573 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 [2022-11-22 02:07:54,600 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 [2022-11-22 02:07:54,642 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 [2022-11-22 02:07:54,663 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 [2022-11-22 02:07:54,800 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 [2022-11-22 02:07:54,823 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 [2022-11-22 02:07:54,909 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 [2022-11-22 02:07:54,914 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 [2022-11-22 02:07:54,953 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-22 02:07:54,953 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:07:54,953 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 02:07:54,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [700015831] [2022-11-22 02:07:54,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [700015831] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:07:54,954 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:07:54,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-22 02:07:54,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123250657] [2022-11-22 02:07:54,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:07:54,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-22 02:07:54,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 02:07:54,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-22 02:07:54,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-22 02:07:54,958 INFO L87 Difference]: Start difference. First operand 306 states and 344 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) [2022-11-22 02:07:56,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:07:56,842 INFO L93 Difference]: Finished difference Result 305 states and 342 transitions. [2022-11-22 02:07:56,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-22 02:07:56,843 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 [2022-11-22 02:07:56,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:07:56,845 INFO L225 Difference]: With dead ends: 305 [2022-11-22 02:07:56,845 INFO L226 Difference]: Without dead ends: 305 [2022-11-22 02:07:56,845 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 [2022-11-22 02:07:56,845 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 235 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 699 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-22 02:07:56,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 699 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-22 02:07:56,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2022-11-22 02:07:56,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 305. [2022-11-22 02:07:56,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 227 states have (on average 1.4889867841409692) internal successors, (338), 301 states have internal predecessors, (338), 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) [2022-11-22 02:07:56,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 342 transitions. [2022-11-22 02:07:56,853 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 342 transitions. Word has length 62 [2022-11-22 02:07:56,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:07:56,853 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 342 transitions. [2022-11-22 02:07:56,853 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) [2022-11-22 02:07:56,853 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 342 transitions. [2022-11-22 02:07:56,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-22 02:07:56,854 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:07:56,854 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] [2022-11-22 02:07:56,883 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-22 02:07:57,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:07:57,055 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)] === [2022-11-22 02:07:57,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:07:57,055 INFO L85 PathProgramCache]: Analyzing trace with hash 379730104, now seen corresponding path program 1 times [2022-11-22 02:07:57,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 02:07:57,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1034657259] [2022-11-22 02:07:57,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:07:57,056 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 [2022-11-22 02:07:57,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 02:07:57,058 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/mathsat -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) [2022-11-22 02:07:57,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-22 02:07:57,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:07:57,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-22 02:07:57,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:07:57,627 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 [2022-11-22 02:07:57,712 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-22 02:07:57,713 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 [2022-11-22 02:07:57,762 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 [2022-11-22 02:07:57,902 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 [2022-11-22 02:07:58,112 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-22 02:07:58,112 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 [2022-11-22 02:07:58,168 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 [2022-11-22 02:07:58,295 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-22 02:07:58,296 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:07:58,296 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 02:07:58,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1034657259] [2022-11-22 02:07:58,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1034657259] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:07:58,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:07:58,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-22 02:07:58,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923328675] [2022-11-22 02:07:58,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:07:58,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-22 02:07:58,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 02:07:58,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-22 02:07:58,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-22 02:07:58,298 INFO L87 Difference]: Start difference. First operand 305 states and 342 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) [2022-11-22 02:08:01,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:08:01,662 INFO L93 Difference]: Finished difference Result 328 states and 366 transitions. [2022-11-22 02:08:01,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-22 02:08:01,663 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 [2022-11-22 02:08:01,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:08:01,665 INFO L225 Difference]: With dead ends: 328 [2022-11-22 02:08:01,666 INFO L226 Difference]: Without dead ends: 328 [2022-11-22 02:08:01,666 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 [2022-11-22 02:08:01,667 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 270 mSDsluCounter, 751 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s 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, 3.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:08:01,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 913 Invalid, 553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-22 02:08:01,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2022-11-22 02:08:01,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 314. [2022-11-22 02:08:01,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 236 states have (on average 1.4957627118644068) internal successors, (353), 310 states have internal predecessors, (353), 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) [2022-11-22 02:08:01,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 357 transitions. [2022-11-22 02:08:01,677 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 357 transitions. Word has length 66 [2022-11-22 02:08:01,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:08:01,678 INFO L495 AbstractCegarLoop]: Abstraction has 314 states and 357 transitions. [2022-11-22 02:08:01,678 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) [2022-11-22 02:08:01,678 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 357 transitions. [2022-11-22 02:08:01,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-22 02:08:01,682 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:08:01,683 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] [2022-11-22 02:08:01,714 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-22 02:08:01,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:08:01,907 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)] === [2022-11-22 02:08:01,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:08:01,907 INFO L85 PathProgramCache]: Analyzing trace with hash 379730105, now seen corresponding path program 1 times [2022-11-22 02:08:01,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 02:08:01,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1091881883] [2022-11-22 02:08:01,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:08:01,908 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 [2022-11-22 02:08:01,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 02:08:01,909 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/mathsat -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) [2022-11-22 02:08:01,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-22 02:08:02,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:08:02,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-22 02:08:02,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:08:02,655 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 [2022-11-22 02:08:02,730 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-22 02:08:02,731 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 [2022-11-22 02:08:02,745 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 [2022-11-22 02:08:02,792 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 [2022-11-22 02:08:02,814 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 [2022-11-22 02:08:02,975 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 [2022-11-22 02:08:03,001 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 [2022-11-22 02:08:03,244 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-22 02:08:03,245 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 [2022-11-22 02:08:03,276 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 [2022-11-22 02:08:03,465 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 [2022-11-22 02:08:03,477 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 [2022-11-22 02:08:03,544 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-22 02:08:03,544 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:08:03,545 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 02:08:03,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1091881883] [2022-11-22 02:08:03,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1091881883] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:08:03,545 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:08:03,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-22 02:08:03,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537920949] [2022-11-22 02:08:03,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:08:03,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-22 02:08:03,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-22 02:08:03,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-22 02:08:03,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-22 02:08:03,547 INFO L87 Difference]: Start difference. First operand 314 states and 357 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) [2022-11-22 02:08:06,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:08:06,595 INFO L93 Difference]: Finished difference Result 326 states and 361 transitions. [2022-11-22 02:08:06,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-22 02:08:06,598 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 [2022-11-22 02:08:06,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:08:06,599 INFO L225 Difference]: With dead ends: 326 [2022-11-22 02:08:06,599 INFO L226 Difference]: Without dead ends: 326 [2022-11-22 02:08:06,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2022-11-22 02:08:06,600 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 491 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 492 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-22 02:08:06,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [492 Valid, 551 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-22 02:08:06,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2022-11-22 02:08:06,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 314. [2022-11-22 02:08:06,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 236 states have (on average 1.478813559322034) internal successors, (349), 310 states have internal predecessors, (349), 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) [2022-11-22 02:08:06,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 353 transitions. [2022-11-22 02:08:06,609 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 353 transitions. Word has length 66 [2022-11-22 02:08:06,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:08:06,610 INFO L495 AbstractCegarLoop]: Abstraction has 314 states and 353 transitions. [2022-11-22 02:08:06,610 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) [2022-11-22 02:08:06,610 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 353 transitions. [2022-11-22 02:08:06,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-22 02:08:06,611 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:08:06,611 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] [2022-11-22 02:08:06,642 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-22 02:08:06,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-22 02:08:06,826 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)] === [2022-11-22 02:08:06,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:08:06,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1974317589, now seen corresponding path program 1 times [2022-11-22 02:08:06,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-22 02:08:06,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1150497660] [2022-11-22 02:08:06,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:08:06,828 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 [2022-11-22 02:08:06,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/mathsat [2022-11-22 02:08:06,830 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/mathsat -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) [2022-11-22 02:08:06,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-22 02:08:07,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:08:07,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-22 02:08:07,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:08:07,748 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 [2022-11-22 02:08:07,835 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-22 02:08:07,836 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 [2022-11-22 02:08:07,895 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 [2022-11-22 02:08:08,066 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 [2022-11-22 02:08:08,298 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-22 02:08:08,298 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 [2022-11-22 02:08:08,515 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-22 02:08:08,515 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 [2022-11-22 02:08:08,613 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 [2022-11-22 02:08:08,721 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2022-11-22 02:08:08,721 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:08:08,858 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1199 (Array (_ BitVec 64) (_ BitVec 64)))) (= (_ bv0 1) (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem124#1.base| v_ArrVal_1199) |c_ULTIMATE.start_main_~argv~0#1.base|) (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (_ bv1 1)))) is different from false [2022-11-22 02:08:08,886 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1199 (Array (_ BitVec 64) (_ BitVec 64)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse0 (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse0) v_ArrVal_1199) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse0))) (_ bv1 1)))) is different from false [2022-11-22 02:08:08,941 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1198 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1199 (Array (_ BitVec 64) (_ BitVec 64)))) (= (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem122#1.base| v_ArrVal_1198))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) v_ArrVal_1199)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1)))) (_ bv0 1))) is different from false [2022-11-22 02:08:08,989 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1198 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1199 (Array (_ BitVec 64) (_ BitVec 64)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) v_ArrVal_1198))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) v_ArrVal_1199)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2022-11-22 02:08:09,385 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 02:08:09,386 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 [2022-11-22 02:08:09,394 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 5173 treesize of output 4372 [2022-11-22 02:08:09,457 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 4368 treesize of output 3668 [2022-11-22 02:08:09,492 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 3668 treesize of output 2604 [2022-11-22 02:08:09,530 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 2604 treesize of output 2548 [2022-11-22 02:08:23,542 INFO L321 Elim1Store]: treesize reduction 24, result has 22.6 percent of original size [2022-11-22 02:08:23,542 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 30 [2022-11-22 02:08:23,549 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 3 not checked. [2022-11-22 02:08:23,550 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-22 02:08:23,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1150497660] [2022-11-22 02:08:23,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1150497660] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:08:23,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [151096071] [2022-11-22 02:08:23,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:08:23,551 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-22 02:08:23,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/cvc4 [2022-11-22 02:08:23,553 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-22 02:08:23,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f21e3d3f-840c-4ace-af27-b994be0019d8/bin/utaipan-g80aRyZoba/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2022-11-22 02:08:24,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:08:24,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-22 02:08:24,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:08:24,932 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 [2022-11-22 02:08:24,988 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-22 02:08:24,989 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 [2022-11-22 02:08:25,036 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 [2022-11-22 02:08:25,117 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 [2022-11-22 02:08:25,222 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-22 02:08:25,223 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 [2022-11-22 02:08:25,338 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-22 02:08:25,338 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 [2022-11-22 02:08:25,418 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 [2022-11-22 02:08:25,434 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2022-11-22 02:08:25,434 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:08:25,489 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1312 (Array (_ BitVec 64) (_ BitVec 64)))) (= (_ bv0 1) (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem124#1.base| v_ArrVal_1312) |c_ULTIMATE.start_main_~argv~0#1.base|) (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (_ bv1 1)))) is different from false [2022-11-22 02:08:25,511 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1312 (Array (_ BitVec 64) (_ BitVec 64)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse0 (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse0) v_ArrVal_1312) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse0))) (_ bv1 1)))) is different from false [2022-11-22 02:08:25,560 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1312 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1311 (Array (_ BitVec 64) (_ BitVec 64)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem122#1.base| v_ArrVal_1311))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) v_ArrVal_1312)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1)))))) is different from false [2022-11-22 02:08:25,588 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1312 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1311 (Array (_ BitVec 64) (_ BitVec 64)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) v_ArrVal_1311))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) v_ArrVal_1312)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2022-11-22 02:08:25,634 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1312 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1311 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1310 (Array (_ BitVec 64) (_ BitVec 64)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base| v_ArrVal_1310))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) v_ArrVal_1311)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) v_ArrVal_1312)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2022-11-22 02:08:25,694 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 02:08:25,694 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 [2022-11-22 02:08:25,702 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 13423 treesize of output 10732 [2022-11-22 02:08:26,062 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 7840 treesize of output 7616 [2022-11-22 02:08:26,089 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 7616 treesize of output 6573 [2022-11-22 02:08:26,125 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 6573 treesize of output 5152