./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-broom/linux-hlist-lst-data.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-broom/linux-hlist-lst-data.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --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 ebb37748f1af061b5b278b01f310343488b6843bc6e1087491ba7e919a271a52 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:15:13,006 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:15:13,112 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf [2023-11-19 05:15:13,117 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:15:13,117 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:15:13,143 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:15:13,144 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:15:13,144 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:15:13,145 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:15:13,146 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:15:13,146 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:15:13,147 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:15:13,147 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:15:13,148 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:15:13,149 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:15:13,149 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:15:13,150 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:15:13,150 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:15:13,151 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:15:13,152 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:15:13,152 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:15:13,157 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:15:13,157 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 05:15:13,158 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 05:15:13,163 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:15:13,163 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:15:13,164 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:15:13,164 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 05:15:13,165 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 05:15:13,165 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 05:15:13,166 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:15:13,166 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 05:15:13,167 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 05:15:13,167 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:15:13,167 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:15:13,167 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:15:13,168 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:15:13,168 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:15:13,168 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:15:13,168 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:15:13,169 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:15:13,169 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:15:13,169 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:15:13,169 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ebb37748f1af061b5b278b01f310343488b6843bc6e1087491ba7e919a271a52 [2023-11-19 05:15:13,531 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:15:13,560 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:15:13,563 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:15:13,564 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:15:13,565 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:15:13,566 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/memsafety-broom/linux-hlist-lst-data.i [2023-11-19 05:15:16,658 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:15:17,091 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:15:17,094 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/sv-benchmarks/c/memsafety-broom/linux-hlist-lst-data.i [2023-11-19 05:15:17,143 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/data/50b4bfc2e/d1a38ac01b0743a794d14a5d5e2946d8/FLAG438a94fd9 [2023-11-19 05:15:17,158 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/data/50b4bfc2e/d1a38ac01b0743a794d14a5d5e2946d8 [2023-11-19 05:15:17,160 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:15:17,162 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:15:17,165 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:15:17,168 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:15:17,174 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:15:17,175 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:15:17" (1/1) ... [2023-11-19 05:15:17,176 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35ed3e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:15:17, skipping insertion in model container [2023-11-19 05:15:17,176 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:15:17" (1/1) ... [2023-11-19 05:15:17,269 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:15:17,423 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 05:15:17,642 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:15:17,658 ERROR L324 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) [2023-11-19 05:15:17,659 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@15f08dd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:15:17, skipping insertion in model container [2023-11-19 05:15:17,659 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:15:17,660 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-19 05:15:17,663 INFO L158 Benchmark]: Toolchain (without parser) took 499.22ms. Allocated memory is still 138.4MB. Free memory was 108.6MB in the beginning and 92.6MB in the end (delta: 16.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-19 05:15:17,663 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 104.9MB. Free memory is still 72.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:15:17,664 INFO L158 Benchmark]: CACSL2BoogieTranslator took 494.89ms. Allocated memory is still 138.4MB. Free memory was 108.6MB in the beginning and 92.6MB in the end (delta: 16.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-19 05:15:17,666 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 104.9MB. Free memory is still 72.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 494.89ms. Allocated memory is still 138.4MB. Free memory was 108.6MB in the beginning and 92.6MB in the end (delta: 16.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2567]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-broom/linux-hlist-lst-data.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --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 ebb37748f1af061b5b278b01f310343488b6843bc6e1087491ba7e919a271a52 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:15:20,230 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:15:20,342 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Bitvector.epf [2023-11-19 05:15:20,349 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:15:20,350 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:15:20,392 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:15:20,393 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:15:20,394 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:15:20,394 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:15:20,395 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:15:20,395 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:15:20,396 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:15:20,397 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:15:20,397 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:15:20,398 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:15:20,398 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:15:20,399 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 05:15:20,400 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 05:15:20,400 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:15:20,401 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:15:20,401 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:15:20,406 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 05:15:20,407 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 05:15:20,407 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 05:15:20,412 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:15:20,412 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 05:15:20,413 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 05:15:20,413 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 05:15:20,414 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 05:15:20,414 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:15:20,416 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:15:20,416 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 05:15:20,416 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:15:20,416 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:15:20,417 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:15:20,417 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:15:20,418 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-19 05:15:20,419 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 05:15:20,419 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:15:20,419 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:15:20,419 INFO L153 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_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ebb37748f1af061b5b278b01f310343488b6843bc6e1087491ba7e919a271a52 [2023-11-19 05:15:20,863 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:15:20,892 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:15:20,895 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:15:20,896 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:15:20,898 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:15:20,900 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/memsafety-broom/linux-hlist-lst-data.i [2023-11-19 05:15:24,093 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:15:24,499 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:15:24,500 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/sv-benchmarks/c/memsafety-broom/linux-hlist-lst-data.i [2023-11-19 05:15:24,554 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/data/d60cc52e5/38fc6bfc380042a1a0decdb680115e09/FLAGae1ddd837 [2023-11-19 05:15:24,688 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/data/d60cc52e5/38fc6bfc380042a1a0decdb680115e09 [2023-11-19 05:15:24,693 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:15:24,695 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:15:24,700 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:15:24,700 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:15:24,705 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:15:24,706 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:15:24" (1/1) ... [2023-11-19 05:15:24,707 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@85ed8fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:15:24, skipping insertion in model container [2023-11-19 05:15:24,708 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:15:24" (1/1) ... [2023-11-19 05:15:24,793 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:15:25,025 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 05:15:25,206 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:15:25,224 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-19 05:15:25,251 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:15:25,267 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 05:15:25,327 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:15:25,332 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:15:25,347 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 05:15:25,390 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:15:25,420 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:15:25,429 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:15:25,429 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:15:25 WrapperNode [2023-11-19 05:15:25,430 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:15:25,431 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:15:25,431 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:15:25,431 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:15:25,439 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:15:25" (1/1) ... [2023-11-19 05:15:25,458 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:15:25" (1/1) ... [2023-11-19 05:15:25,493 INFO L138 Inliner]: procedures = 126, calls = 34, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 154 [2023-11-19 05:15:25,494 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:15:25,495 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:15:25,495 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:15:25,495 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:15:25,504 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:15:25" (1/1) ... [2023-11-19 05:15:25,505 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:15:25" (1/1) ... [2023-11-19 05:15:25,510 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:15:25" (1/1) ... [2023-11-19 05:15:25,510 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:15:25" (1/1) ... [2023-11-19 05:15:25,526 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:15:25" (1/1) ... [2023-11-19 05:15:25,530 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:15:25" (1/1) ... [2023-11-19 05:15:25,533 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:15:25" (1/1) ... [2023-11-19 05:15:25,535 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:15:25" (1/1) ... [2023-11-19 05:15:25,541 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:15:25,542 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:15:25,542 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:15:25,542 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:15:25,543 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:15:25" (1/1) ... [2023-11-19 05:15:25,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:15:25,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:15:25,581 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:15:25,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:15:25,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 05:15:25,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 05:15:25,616 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 05:15:25,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 05:15:25,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-19 05:15:25,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:15:25,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:15:25,763 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:15:25,765 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:15:26,676 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:15:26,684 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:15:26,684 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-19 05:15:26,688 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:15:26 BoogieIcfgContainer [2023-11-19 05:15:26,688 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:15:26,690 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:15:26,690 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:15:26,697 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:15:26,697 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:15:24" (1/3) ... [2023-11-19 05:15:26,698 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@447d8072 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:15:26, skipping insertion in model container [2023-11-19 05:15:26,699 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:15:25" (2/3) ... [2023-11-19 05:15:26,701 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@447d8072 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:15:26, skipping insertion in model container [2023-11-19 05:15:26,701 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:15:26" (3/3) ... [2023-11-19 05:15:26,703 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-hlist-lst-data.i [2023-11-19 05:15:26,722 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:15:26,723 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 45 error locations. [2023-11-19 05:15:26,785 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:15:26,792 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;@55ed529f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:15:26,793 INFO L358 AbstractCegarLoop]: Starting to check reachability of 45 error locations. [2023-11-19 05:15:26,798 INFO L276 IsEmpty]: Start isEmpty. Operand has 109 states, 63 states have (on average 1.9206349206349207) internal successors, (121), 108 states have internal predecessors, (121), 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) [2023-11-19 05:15:26,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-19 05:15:26,805 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:15:26,806 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-19 05:15:26,806 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2023-11-19 05:15:26,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:15:26,814 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2023-11-19 05:15:26,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:15:26,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1907319962] [2023-11-19 05:15:26,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:15:26,833 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 [2023-11-19 05:15:26,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:15:26,836 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/mathsat -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) [2023-11-19 05:15:26,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/mathsat -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 [2023-11-19 05:15:26,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:15:26,942 INFO L262 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:15:26,947 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:15:27,029 INFO L378 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 [2023-11-19 05:15:27,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:15:27,045 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:15:27,046 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:15:27,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1907319962] [2023-11-19 05:15:27,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1907319962] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:15:27,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:15:27,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:15:27,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974636483] [2023-11-19 05:15:27,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:15:27,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:15:27,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:15:27,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:15:27,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:15:27,092 INFO L87 Difference]: Start difference. First operand has 109 states, 63 states have (on average 1.9206349206349207) internal successors, (121), 108 states have internal predecessors, (121), 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) 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) [2023-11-19 05:15:27,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:15:27,386 INFO L93 Difference]: Finished difference Result 108 states and 117 transitions. [2023-11-19 05:15:27,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:15:27,388 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 [2023-11-19 05:15:27,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:15:27,397 INFO L225 Difference]: With dead ends: 108 [2023-11-19 05:15:27,398 INFO L226 Difference]: Without dead ends: 106 [2023-11-19 05:15:27,399 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 [2023-11-19 05:15:27,403 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 35 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 05:15:27,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 148 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 05:15:27,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-11-19 05:15:27,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2023-11-19 05:15:27,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 62 states have (on average 1.8548387096774193) internal successors, (115), 105 states have internal predecessors, (115), 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) [2023-11-19 05:15:27,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 115 transitions. [2023-11-19 05:15:27,455 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 115 transitions. Word has length 3 [2023-11-19 05:15:27,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:15:27,456 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 115 transitions. [2023-11-19 05:15:27,456 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) [2023-11-19 05:15:27,457 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 115 transitions. [2023-11-19 05:15:27,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-19 05:15:27,457 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:15:27,457 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-19 05:15:27,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/mathsat -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 [2023-11-19 05:15:27,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:15:27,660 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2023-11-19 05:15:27,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:15:27,661 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2023-11-19 05:15:27,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:15:27,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1092618043] [2023-11-19 05:15:27,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:15:27,662 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 [2023-11-19 05:15:27,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:15:27,664 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/mathsat -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) [2023-11-19 05:15:27,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/mathsat -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 [2023-11-19 05:15:27,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:15:27,758 INFO L262 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:15:27,761 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:15:27,774 INFO L378 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 [2023-11-19 05:15:27,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:15:27,792 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:15:27,793 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:15:27,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1092618043] [2023-11-19 05:15:27,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1092618043] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:15:27,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:15:27,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:15:27,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004018632] [2023-11-19 05:15:27,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:15:27,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:15:27,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:15:27,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:15:27,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:15:27,802 INFO L87 Difference]: Start difference. First operand 106 states and 115 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) [2023-11-19 05:15:28,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:15:28,253 INFO L93 Difference]: Finished difference Result 109 states and 119 transitions. [2023-11-19 05:15:28,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:15:28,254 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 [2023-11-19 05:15:28,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:15:28,256 INFO L225 Difference]: With dead ends: 109 [2023-11-19 05:15:28,256 INFO L226 Difference]: Without dead ends: 109 [2023-11-19 05:15:28,257 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 [2023-11-19 05:15:28,258 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 4 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 05:15:28,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 183 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 05:15:28,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2023-11-19 05:15:28,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 105. [2023-11-19 05:15:28,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 62 states have (on average 1.8387096774193548) internal successors, (114), 104 states have internal predecessors, (114), 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) [2023-11-19 05:15:28,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 114 transitions. [2023-11-19 05:15:28,270 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 114 transitions. Word has length 3 [2023-11-19 05:15:28,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:15:28,270 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 114 transitions. [2023-11-19 05:15:28,271 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) [2023-11-19 05:15:28,271 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 114 transitions. [2023-11-19 05:15:28,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-19 05:15:28,271 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:15:28,272 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 05:15:28,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/mathsat -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 [2023-11-19 05:15:28,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:15:28,475 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2023-11-19 05:15:28,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:15:28,476 INFO L85 PathProgramCache]: Analyzing trace with hash 889450188, now seen corresponding path program 1 times [2023-11-19 05:15:28,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:15:28,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [620018084] [2023-11-19 05:15:28,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:15:28,476 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 [2023-11-19 05:15:28,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:15:28,478 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/mathsat -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) [2023-11-19 05:15:28,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/mathsat -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 [2023-11-19 05:15:28,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:15:28,549 INFO L262 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 05:15:28,551 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:15:28,561 INFO L378 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 [2023-11-19 05:15:28,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:15:28,570 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:15:28,570 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:15:28,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [620018084] [2023-11-19 05:15:28,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [620018084] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:15:28,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:15:28,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:15:28,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045960817] [2023-11-19 05:15:28,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:15:28,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:15:28,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:15:28,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:15:28,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:15:28,573 INFO L87 Difference]: Start difference. First operand 105 states and 114 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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) [2023-11-19 05:15:28,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:15:28,821 INFO L93 Difference]: Finished difference Result 103 states and 112 transitions. [2023-11-19 05:15:28,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:15:28,822 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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 [2023-11-19 05:15:28,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:15:28,823 INFO L225 Difference]: With dead ends: 103 [2023-11-19 05:15:28,824 INFO L226 Difference]: Without dead ends: 103 [2023-11-19 05:15:28,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:15:28,825 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 4 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:15:28,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 174 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:15:28,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2023-11-19 05:15:28,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2023-11-19 05:15:28,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 62 states have (on average 1.8064516129032258) internal successors, (112), 102 states have internal predecessors, (112), 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) [2023-11-19 05:15:28,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 112 transitions. [2023-11-19 05:15:28,844 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 112 transitions. Word has length 6 [2023-11-19 05:15:28,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:15:28,844 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 112 transitions. [2023-11-19 05:15:28,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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) [2023-11-19 05:15:28,845 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 112 transitions. [2023-11-19 05:15:28,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-19 05:15:28,845 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:15:28,845 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 05:15:28,853 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/mathsat -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 [2023-11-19 05:15:29,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:15:29,048 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2023-11-19 05:15:29,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:15:29,049 INFO L85 PathProgramCache]: Analyzing trace with hash 889450189, now seen corresponding path program 1 times [2023-11-19 05:15:29,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:15:29,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [475681117] [2023-11-19 05:15:29,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:15:29,050 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 [2023-11-19 05:15:29,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:15:29,051 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/mathsat -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) [2023-11-19 05:15:29,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/mathsat -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 [2023-11-19 05:15:29,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:15:29,135 INFO L262 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 05:15:29,137 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:15:29,166 INFO L378 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 [2023-11-19 05:15:29,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:15:29,184 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:15:29,187 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:15:29,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [475681117] [2023-11-19 05:15:29,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [475681117] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:15:29,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:15:29,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:15:29,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905251016] [2023-11-19 05:15:29,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:15:29,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:15:29,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:15:29,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:15:29,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:15:29,192 INFO L87 Difference]: Start difference. First operand 103 states and 112 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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) [2023-11-19 05:15:29,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:15:29,595 INFO L93 Difference]: Finished difference Result 101 states and 110 transitions. [2023-11-19 05:15:29,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:15:29,595 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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 [2023-11-19 05:15:29,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:15:29,597 INFO L225 Difference]: With dead ends: 101 [2023-11-19 05:15:29,597 INFO L226 Difference]: Without dead ends: 101 [2023-11-19 05:15:29,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:15:29,598 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 2 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 05:15:29,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 180 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 05:15:29,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-11-19 05:15:29,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2023-11-19 05:15:29,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 62 states have (on average 1.7741935483870968) internal successors, (110), 100 states have internal predecessors, (110), 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) [2023-11-19 05:15:29,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 110 transitions. [2023-11-19 05:15:29,606 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 110 transitions. Word has length 6 [2023-11-19 05:15:29,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:15:29,606 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 110 transitions. [2023-11-19 05:15:29,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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) [2023-11-19 05:15:29,606 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 110 transitions. [2023-11-19 05:15:29,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 05:15:29,607 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:15:29,607 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:15:29,615 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/mathsat -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 [2023-11-19 05:15:29,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:15:29,808 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2023-11-19 05:15:29,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:15:29,809 INFO L85 PathProgramCache]: Analyzing trace with hash 63117526, now seen corresponding path program 1 times [2023-11-19 05:15:29,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:15:29,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [639034469] [2023-11-19 05:15:29,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:15:29,810 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 [2023-11-19 05:15:29,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:15:29,811 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/mathsat -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) [2023-11-19 05:15:29,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-19 05:15:29,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:15:29,887 INFO L262 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 05:15:29,888 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:15:29,893 INFO L378 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 [2023-11-19 05:15:29,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:15:29,934 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:15:29,934 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:15:29,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [639034469] [2023-11-19 05:15:29,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [639034469] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:15:29,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:15:29,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:15:29,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529991259] [2023-11-19 05:15:29,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:15:29,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 05:15:29,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:15:29,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 05:15:29,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:15:29,936 INFO L87 Difference]: Start difference. First operand 101 states and 110 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 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) [2023-11-19 05:15:30,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:15:30,481 INFO L93 Difference]: Finished difference Result 142 states and 154 transitions. [2023-11-19 05:15:30,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 05:15:30,482 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 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 8 [2023-11-19 05:15:30,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:15:30,483 INFO L225 Difference]: With dead ends: 142 [2023-11-19 05:15:30,483 INFO L226 Difference]: Without dead ends: 142 [2023-11-19 05:15:30,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-19 05:15:30,484 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 111 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 05:15:30,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 211 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 05:15:30,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2023-11-19 05:15:30,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 100. [2023-11-19 05:15:30,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 62 states have (on average 1.7580645161290323) internal successors, (109), 99 states have internal predecessors, (109), 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) [2023-11-19 05:15:30,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 109 transitions. [2023-11-19 05:15:30,493 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 109 transitions. Word has length 8 [2023-11-19 05:15:30,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:15:30,494 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 109 transitions. [2023-11-19 05:15:30,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 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) [2023-11-19 05:15:30,494 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 109 transitions. [2023-11-19 05:15:30,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 05:15:30,495 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:15:30,495 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:15:30,504 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-19 05:15:30,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:15:30,699 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2023-11-19 05:15:30,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:15:30,700 INFO L85 PathProgramCache]: Analyzing trace with hash 63117527, now seen corresponding path program 1 times [2023-11-19 05:15:30,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:15:30,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1435727365] [2023-11-19 05:15:30,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:15:30,700 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 [2023-11-19 05:15:30,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:15:30,701 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/mathsat -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) [2023-11-19 05:15:30,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-19 05:15:30,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:15:30,779 INFO L262 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-19 05:15:30,780 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:15:30,796 INFO L378 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 [2023-11-19 05:15:30,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:15:30,888 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:15:30,888 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:15:30,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1435727365] [2023-11-19 05:15:30,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1435727365] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:15:30,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:15:30,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:15:30,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662978155] [2023-11-19 05:15:30,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:15:30,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 05:15:30,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:15:30,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 05:15:30,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:15:30,890 INFO L87 Difference]: Start difference. First operand 100 states and 109 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 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) [2023-11-19 05:15:31,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:15:31,801 INFO L93 Difference]: Finished difference Result 171 states and 188 transitions. [2023-11-19 05:15:31,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 05:15:31,802 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 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 8 [2023-11-19 05:15:31,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:15:31,804 INFO L225 Difference]: With dead ends: 171 [2023-11-19 05:15:31,804 INFO L226 Difference]: Without dead ends: 171 [2023-11-19 05:15:31,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-19 05:15:31,805 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 91 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-19 05:15:31,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 294 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-19 05:15:31,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2023-11-19 05:15:31,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 105. [2023-11-19 05:15:31,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 67 states have (on average 1.7164179104477613) internal successors, (115), 104 states have internal predecessors, (115), 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) [2023-11-19 05:15:31,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 115 transitions. [2023-11-19 05:15:31,814 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 115 transitions. Word has length 8 [2023-11-19 05:15:31,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:15:31,814 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 115 transitions. [2023-11-19 05:15:31,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 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) [2023-11-19 05:15:31,815 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 115 transitions. [2023-11-19 05:15:31,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-19 05:15:31,815 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:15:31,816 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:15:31,828 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-11-19 05:15:32,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:15:32,019 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2023-11-19 05:15:32,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:15:32,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1957290890, now seen corresponding path program 1 times [2023-11-19 05:15:32,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:15:32,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [524838201] [2023-11-19 05:15:32,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:15:32,020 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:15:32,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:15:32,021 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/mathsat -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) [2023-11-19 05:15:32,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/mathsat -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 [2023-11-19 05:15:32,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:15:32,118 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:15:32,120 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:15:32,126 INFO L378 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 [2023-11-19 05:15:32,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:15:32,144 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:15:32,144 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:15:32,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [524838201] [2023-11-19 05:15:32,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [524838201] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:15:32,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:15:32,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:15:32,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531162530] [2023-11-19 05:15:32,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:15:32,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:15:32,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:15:32,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:15:32,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:15:32,147 INFO L87 Difference]: Start difference. First operand 105 states and 115 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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) [2023-11-19 05:15:32,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:15:32,386 INFO L93 Difference]: Finished difference Result 104 states and 114 transitions. [2023-11-19 05:15:32,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:15:32,387 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2023-11-19 05:15:32,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:15:32,388 INFO L225 Difference]: With dead ends: 104 [2023-11-19 05:15:32,388 INFO L226 Difference]: Without dead ends: 104 [2023-11-19 05:15:32,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:15:32,389 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 21 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:15:32,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 147 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:15:32,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2023-11-19 05:15:32,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2023-11-19 05:15:32,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 67 states have (on average 1.7014925373134329) internal successors, (114), 103 states have internal predecessors, (114), 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) [2023-11-19 05:15:32,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 114 transitions. [2023-11-19 05:15:32,396 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 114 transitions. Word has length 9 [2023-11-19 05:15:32,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:15:32,396 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 114 transitions. [2023-11-19 05:15:32,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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) [2023-11-19 05:15:32,396 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 114 transitions. [2023-11-19 05:15:32,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-19 05:15:32,397 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:15:32,397 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:15:32,408 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-11-19 05:15:32,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:15:32,600 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2023-11-19 05:15:32,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:15:32,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1957290891, now seen corresponding path program 1 times [2023-11-19 05:15:32,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:15:32,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1561099549] [2023-11-19 05:15:32,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:15:32,601 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 [2023-11-19 05:15:32,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:15:32,602 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/mathsat -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) [2023-11-19 05:15:32,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-19 05:15:32,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:15:32,699 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 05:15:32,701 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:15:32,710 INFO L378 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 [2023-11-19 05:15:32,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:15:32,746 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:15:32,746 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:15:32,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1561099549] [2023-11-19 05:15:32,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1561099549] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:15:32,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:15:32,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:15:32,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204003220] [2023-11-19 05:15:32,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:15:32,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:15:32,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:15:32,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:15:32,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:15:32,748 INFO L87 Difference]: Start difference. First operand 104 states and 114 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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) [2023-11-19 05:15:33,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:15:33,079 INFO L93 Difference]: Finished difference Result 103 states and 113 transitions. [2023-11-19 05:15:33,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:15:33,081 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2023-11-19 05:15:33,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:15:33,083 INFO L225 Difference]: With dead ends: 103 [2023-11-19 05:15:33,083 INFO L226 Difference]: Without dead ends: 103 [2023-11-19 05:15:33,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:15:33,084 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 20 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 05:15:33,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 152 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 05:15:33,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2023-11-19 05:15:33,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2023-11-19 05:15:33,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 67 states have (on average 1.6865671641791045) internal successors, (113), 102 states have internal predecessors, (113), 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) [2023-11-19 05:15:33,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 113 transitions. [2023-11-19 05:15:33,090 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 113 transitions. Word has length 9 [2023-11-19 05:15:33,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:15:33,090 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 113 transitions. [2023-11-19 05:15:33,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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) [2023-11-19 05:15:33,091 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 113 transitions. [2023-11-19 05:15:33,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-19 05:15:33,096 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:15:33,096 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:15:33,101 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-11-19 05:15:33,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:15:33,299 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2023-11-19 05:15:33,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:15:33,300 INFO L85 PathProgramCache]: Analyzing trace with hash -239130453, now seen corresponding path program 1 times [2023-11-19 05:15:33,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:15:33,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [890000802] [2023-11-19 05:15:33,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:15:33,300 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:15:33,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:15:33,302 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/mathsat -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) [2023-11-19 05:15:33,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-11-19 05:15:33,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:15:33,447 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 05:15:33,449 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:15:33,460 INFO L378 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 [2023-11-19 05:15:33,521 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2023-11-19 05:15:33,529 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2023-11-19 05:15:33,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:15:33,562 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:15:33,563 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:15:33,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [890000802] [2023-11-19 05:15:33,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [890000802] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:15:33,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:15:33,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:15:33,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355532174] [2023-11-19 05:15:33,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:15:33,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:15:33,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:15:33,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:15:33,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:15:33,565 INFO L87 Difference]: Start difference. First operand 103 states and 113 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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) [2023-11-19 05:15:33,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:15:33,882 INFO L93 Difference]: Finished difference Result 101 states and 111 transitions. [2023-11-19 05:15:33,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:15:33,883 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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 11 [2023-11-19 05:15:33,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:15:33,883 INFO L225 Difference]: With dead ends: 101 [2023-11-19 05:15:33,884 INFO L226 Difference]: Without dead ends: 101 [2023-11-19 05:15:33,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:15:33,885 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 36 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 05:15:33,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 194 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 05:15:33,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-11-19 05:15:33,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2023-11-19 05:15:33,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 67 states have (on average 1.6567164179104477) internal successors, (111), 100 states have internal predecessors, (111), 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) [2023-11-19 05:15:33,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 111 transitions. [2023-11-19 05:15:33,889 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 111 transitions. Word has length 11 [2023-11-19 05:15:33,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:15:33,890 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 111 transitions. [2023-11-19 05:15:33,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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) [2023-11-19 05:15:33,890 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 111 transitions. [2023-11-19 05:15:33,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-19 05:15:33,891 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:15:33,891 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:15:33,900 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-11-19 05:15:34,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:15:34,096 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2023-11-19 05:15:34,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:15:34,097 INFO L85 PathProgramCache]: Analyzing trace with hash -239130452, now seen corresponding path program 1 times [2023-11-19 05:15:34,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:15:34,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [526034614] [2023-11-19 05:15:34,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:15:34,097 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 [2023-11-19 05:15:34,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:15:34,098 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/mathsat -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) [2023-11-19 05:15:34,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/mathsat -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 [2023-11-19 05:15:34,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:15:34,266 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-19 05:15:34,267 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:15:34,275 INFO L378 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 [2023-11-19 05:15:34,290 INFO L378 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 [2023-11-19 05:15:34,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 05:15:34,397 INFO L378 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 14 treesize of output 9 [2023-11-19 05:15:34,422 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-19 05:15:34,422 INFO L378 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 [2023-11-19 05:15:34,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:15:34,507 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:15:34,507 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:15:34,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [526034614] [2023-11-19 05:15:34,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [526034614] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:15:34,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:15:34,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:15:34,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227803384] [2023-11-19 05:15:34,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:15:34,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 05:15:34,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:15:34,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 05:15:34,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:15:34,512 INFO L87 Difference]: Start difference. First operand 101 states and 111 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 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) [2023-11-19 05:15:35,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:15:35,017 INFO L93 Difference]: Finished difference Result 99 states and 109 transitions. [2023-11-19 05:15:35,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:15:35,018 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 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 11 [2023-11-19 05:15:35,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:15:35,019 INFO L225 Difference]: With dead ends: 99 [2023-11-19 05:15:35,019 INFO L226 Difference]: Without dead ends: 99 [2023-11-19 05:15:35,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-19 05:15:35,024 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 36 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 05:15:35,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 242 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 05:15:35,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2023-11-19 05:15:35,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2023-11-19 05:15:35,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 67 states have (on average 1.626865671641791) internal successors, (109), 98 states have internal predecessors, (109), 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) [2023-11-19 05:15:35,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 109 transitions. [2023-11-19 05:15:35,031 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 109 transitions. Word has length 11 [2023-11-19 05:15:35,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:15:35,031 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 109 transitions. [2023-11-19 05:15:35,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 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) [2023-11-19 05:15:35,031 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 109 transitions. [2023-11-19 05:15:35,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-19 05:15:35,032 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:15:35,032 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:15:35,041 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/mathsat -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 [2023-11-19 05:15:35,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:15:35,237 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2023-11-19 05:15:35,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:15:35,238 INFO L85 PathProgramCache]: Analyzing trace with hash 2123868684, now seen corresponding path program 1 times [2023-11-19 05:15:35,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:15:35,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [506210906] [2023-11-19 05:15:35,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:15:35,239 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 [2023-11-19 05:15:35,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:15:35,240 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/mathsat -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) [2023-11-19 05:15:35,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/mathsat -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 [2023-11-19 05:15:35,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:15:35,391 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 05:15:35,393 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:15:35,401 INFO L378 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 [2023-11-19 05:15:35,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:15:35,455 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:15:35,455 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:15:35,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [506210906] [2023-11-19 05:15:35,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [506210906] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:15:35,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:15:35,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:15:35,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121704887] [2023-11-19 05:15:35,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:15:35,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:15:35,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:15:35,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:15:35,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:15:35,457 INFO L87 Difference]: Start difference. First operand 99 states and 109 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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) [2023-11-19 05:15:35,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:15:35,824 INFO L93 Difference]: Finished difference Result 97 states and 107 transitions. [2023-11-19 05:15:35,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:15:35,824 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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 13 [2023-11-19 05:15:35,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:15:35,825 INFO L225 Difference]: With dead ends: 97 [2023-11-19 05:15:35,825 INFO L226 Difference]: Without dead ends: 97 [2023-11-19 05:15:35,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:15:35,826 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 23 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 05:15:35,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 199 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 05:15:35,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2023-11-19 05:15:35,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2023-11-19 05:15:35,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 67 states have (on average 1.5970149253731343) internal successors, (107), 96 states have internal predecessors, (107), 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) [2023-11-19 05:15:35,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 107 transitions. [2023-11-19 05:15:35,830 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 107 transitions. Word has length 13 [2023-11-19 05:15:35,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:15:35,830 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 107 transitions. [2023-11-19 05:15:35,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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) [2023-11-19 05:15:35,830 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 107 transitions. [2023-11-19 05:15:35,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-19 05:15:35,831 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:15:35,831 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:15:35,837 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/mathsat -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 [2023-11-19 05:15:36,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:15:36,037 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2023-11-19 05:15:36,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:15:36,037 INFO L85 PathProgramCache]: Analyzing trace with hash 2123868685, now seen corresponding path program 1 times [2023-11-19 05:15:36,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:15:36,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1542850451] [2023-11-19 05:15:36,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:15:36,038 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 [2023-11-19 05:15:36,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:15:36,039 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/mathsat -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) [2023-11-19 05:15:36,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-11-19 05:15:36,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:15:36,158 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 05:15:36,159 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:15:36,167 INFO L378 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 [2023-11-19 05:15:36,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:15:36,237 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:15:36,237 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:15:36,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1542850451] [2023-11-19 05:15:36,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1542850451] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:15:36,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:15:36,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:15:36,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13390595] [2023-11-19 05:15:36,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:15:36,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:15:36,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:15:36,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:15:36,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:15:36,240 INFO L87 Difference]: Start difference. First operand 97 states and 107 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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) [2023-11-19 05:15:36,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:15:36,649 INFO L93 Difference]: Finished difference Result 95 states and 105 transitions. [2023-11-19 05:15:36,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:15:36,653 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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 13 [2023-11-19 05:15:36,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:15:36,655 INFO L225 Difference]: With dead ends: 95 [2023-11-19 05:15:36,655 INFO L226 Difference]: Without dead ends: 95 [2023-11-19 05:15:36,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:15:36,656 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 19 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 05:15:36,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 209 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 05:15:36,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2023-11-19 05:15:36,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2023-11-19 05:15:36,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 67 states have (on average 1.5671641791044777) internal successors, (105), 94 states have internal predecessors, (105), 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) [2023-11-19 05:15:36,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 105 transitions. [2023-11-19 05:15:36,661 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 105 transitions. Word has length 13 [2023-11-19 05:15:36,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:15:36,661 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 105 transitions. [2023-11-19 05:15:36,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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) [2023-11-19 05:15:36,662 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 105 transitions. [2023-11-19 05:15:36,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-19 05:15:36,663 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:15:36,663 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:15:36,668 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-11-19 05:15:36,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:15:36,867 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2023-11-19 05:15:36,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:15:36,868 INFO L85 PathProgramCache]: Analyzing trace with hash -362942976, now seen corresponding path program 1 times [2023-11-19 05:15:36,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:15:36,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [974133117] [2023-11-19 05:15:36,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:15:36,868 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 [2023-11-19 05:15:36,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:15:36,870 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/mathsat -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) [2023-11-19 05:15:36,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-11-19 05:15:36,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:15:36,982 INFO L262 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-19 05:15:36,984 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:15:36,993 INFO L378 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 11 treesize of output 7 [2023-11-19 05:15:37,002 INFO L378 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 11 treesize of output 7 [2023-11-19 05:15:37,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:15:37,172 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:15:37,173 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:15:37,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [974133117] [2023-11-19 05:15:37,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [974133117] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:15:37,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:15:37,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 05:15:37,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177507715] [2023-11-19 05:15:37,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:15:37,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 05:15:37,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:15:37,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 05:15:37,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-19 05:15:37,174 INFO L87 Difference]: Start difference. First operand 95 states and 105 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 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) [2023-11-19 05:15:37,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:15:37,987 INFO L93 Difference]: Finished difference Result 145 states and 159 transitions. [2023-11-19 05:15:37,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 05:15:37,988 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 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 14 [2023-11-19 05:15:37,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:15:37,989 INFO L225 Difference]: With dead ends: 145 [2023-11-19 05:15:37,989 INFO L226 Difference]: Without dead ends: 145 [2023-11-19 05:15:37,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-11-19 05:15:37,990 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 68 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-19 05:15:37,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 480 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-19 05:15:37,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2023-11-19 05:15:37,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 97. [2023-11-19 05:15:37,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 69 states have (on average 1.5507246376811594) internal successors, (107), 96 states have internal predecessors, (107), 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) [2023-11-19 05:15:37,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 107 transitions. [2023-11-19 05:15:37,995 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 107 transitions. Word has length 14 [2023-11-19 05:15:37,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:15:37,995 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 107 transitions. [2023-11-19 05:15:37,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 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) [2023-11-19 05:15:37,995 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 107 transitions. [2023-11-19 05:15:37,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-19 05:15:37,996 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:15:37,996 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:15:37,999 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-11-19 05:15:38,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:15:38,199 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2023-11-19 05:15:38,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:15:38,200 INFO L85 PathProgramCache]: Analyzing trace with hash -361095934, now seen corresponding path program 1 times [2023-11-19 05:15:38,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:15:38,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1848491331] [2023-11-19 05:15:38,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:15:38,201 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 [2023-11-19 05:15:38,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:15:38,202 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/mathsat -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) [2023-11-19 05:15:38,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/mathsat -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 [2023-11-19 05:15:38,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:15:38,302 INFO L262 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 05:15:38,304 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:15:38,310 INFO L378 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 [2023-11-19 05:15:38,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:15:38,380 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:15:38,381 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:15:38,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1848491331] [2023-11-19 05:15:38,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1848491331] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:15:38,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:15:38,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 05:15:38,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245904269] [2023-11-19 05:15:38,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:15:38,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 05:15:38,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:15:38,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 05:15:38,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-19 05:15:38,383 INFO L87 Difference]: Start difference. First operand 97 states and 107 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 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) [2023-11-19 05:15:39,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:15:39,055 INFO L93 Difference]: Finished difference Result 137 states and 150 transitions. [2023-11-19 05:15:39,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 05:15:39,056 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 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 14 [2023-11-19 05:15:39,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:15:39,057 INFO L225 Difference]: With dead ends: 137 [2023-11-19 05:15:39,057 INFO L226 Difference]: Without dead ends: 137 [2023-11-19 05:15:39,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-19 05:15:39,058 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 191 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 05:15:39,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 236 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 05:15:39,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2023-11-19 05:15:39,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 104. [2023-11-19 05:15:39,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 77 states have (on average 1.5584415584415585) internal successors, (120), 103 states have internal predecessors, (120), 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) [2023-11-19 05:15:39,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 120 transitions. [2023-11-19 05:15:39,062 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 120 transitions. Word has length 14 [2023-11-19 05:15:39,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:15:39,063 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 120 transitions. [2023-11-19 05:15:39,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 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) [2023-11-19 05:15:39,063 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 120 transitions. [2023-11-19 05:15:39,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-19 05:15:39,064 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:15:39,064 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:15:39,068 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/mathsat -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 [2023-11-19 05:15:39,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:15:39,264 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2023-11-19 05:15:39,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:15:39,265 INFO L85 PathProgramCache]: Analyzing trace with hash -361095933, now seen corresponding path program 1 times [2023-11-19 05:15:39,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:15:39,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1254100725] [2023-11-19 05:15:39,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:15:39,265 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 [2023-11-19 05:15:39,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:15:39,267 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/mathsat -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) [2023-11-19 05:15:39,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/mathsat -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 [2023-11-19 05:15:39,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:15:39,383 INFO L262 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-19 05:15:39,386 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:15:39,400 INFO L378 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 [2023-11-19 05:15:39,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:15:39,551 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:15:39,551 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 05:15:39,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1254100725] [2023-11-19 05:15:39,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1254100725] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:15:39,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:15:39,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 05:15:39,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729935410] [2023-11-19 05:15:39,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:15:39,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 05:15:39,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 05:15:39,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 05:15:39,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-19 05:15:39,553 INFO L87 Difference]: Start difference. First operand 104 states and 120 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 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) [2023-11-19 05:15:40,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:15:40,542 INFO L93 Difference]: Finished difference Result 173 states and 200 transitions. [2023-11-19 05:15:40,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 05:15:40,543 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 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 14 [2023-11-19 05:15:40,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:15:40,544 INFO L225 Difference]: With dead ends: 173 [2023-11-19 05:15:40,544 INFO L226 Difference]: Without dead ends: 173 [2023-11-19 05:15:40,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-19 05:15:40,545 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 190 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-19 05:15:40,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 310 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-19 05:15:40,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2023-11-19 05:15:40,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 145. [2023-11-19 05:15:40,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 118 states have (on average 1.61864406779661) internal successors, (191), 144 states have internal predecessors, (191), 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) [2023-11-19 05:15:40,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 191 transitions. [2023-11-19 05:15:40,551 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 191 transitions. Word has length 14 [2023-11-19 05:15:40,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:15:40,551 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 191 transitions. [2023-11-19 05:15:40,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 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) [2023-11-19 05:15:40,552 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 191 transitions. [2023-11-19 05:15:40,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-19 05:15:40,552 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:15:40,552 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:15:40,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/mathsat -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 [2023-11-19 05:15:40,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:15:40,753 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2023-11-19 05:15:40,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:15:40,753 INFO L85 PathProgramCache]: Analyzing trace with hash -361094523, now seen corresponding path program 1 times [2023-11-19 05:15:40,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 05:15:40,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [745603750] [2023-11-19 05:15:40,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:15:40,754 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 [2023-11-19 05:15:40,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 05:15:40,755 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/mathsat -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) [2023-11-19 05:15:40,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/mathsat -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 [2023-11-19 05:15:40,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 05:15:40,856 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 05:15:40,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 05:15:40,926 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2023-11-19 05:15:40,927 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 05:15:40,928 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 45 remaining) [2023-11-19 05:15:40,930 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 45 remaining) [2023-11-19 05:15:40,930 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 45 remaining) [2023-11-19 05:15:40,930 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 45 remaining) [2023-11-19 05:15:40,930 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 45 remaining) [2023-11-19 05:15:40,931 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 45 remaining) [2023-11-19 05:15:40,931 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 45 remaining) [2023-11-19 05:15:40,931 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 45 remaining) [2023-11-19 05:15:40,931 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 45 remaining) [2023-11-19 05:15:40,931 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 45 remaining) [2023-11-19 05:15:40,932 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 45 remaining) [2023-11-19 05:15:40,932 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 45 remaining) [2023-11-19 05:15:40,932 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 45 remaining) [2023-11-19 05:15:40,932 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 45 remaining) [2023-11-19 05:15:40,932 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 45 remaining) [2023-11-19 05:15:40,933 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 45 remaining) [2023-11-19 05:15:40,933 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 45 remaining) [2023-11-19 05:15:40,933 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 45 remaining) [2023-11-19 05:15:40,933 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 45 remaining) [2023-11-19 05:15:40,933 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 45 remaining) [2023-11-19 05:15:40,934 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 45 remaining) [2023-11-19 05:15:40,934 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 45 remaining) [2023-11-19 05:15:40,934 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 45 remaining) [2023-11-19 05:15:40,934 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 45 remaining) [2023-11-19 05:15:40,934 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 45 remaining) [2023-11-19 05:15:40,935 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 45 remaining) [2023-11-19 05:15:40,935 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 45 remaining) [2023-11-19 05:15:40,935 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 45 remaining) [2023-11-19 05:15:40,935 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 45 remaining) [2023-11-19 05:15:40,935 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 45 remaining) [2023-11-19 05:15:40,936 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 45 remaining) [2023-11-19 05:15:40,936 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 45 remaining) [2023-11-19 05:15:40,936 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 45 remaining) [2023-11-19 05:15:40,936 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 45 remaining) [2023-11-19 05:15:40,936 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 45 remaining) [2023-11-19 05:15:40,937 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 45 remaining) [2023-11-19 05:15:40,937 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 45 remaining) [2023-11-19 05:15:40,937 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr37REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 45 remaining) [2023-11-19 05:15:40,937 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE (6 of 45 remaining) [2023-11-19 05:15:40,937 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE (5 of 45 remaining) [2023-11-19 05:15:40,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE (4 of 45 remaining) [2023-11-19 05:15:40,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE (3 of 45 remaining) [2023-11-19 05:15:40,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE (2 of 45 remaining) [2023-11-19 05:15:40,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr43ASSERT_VIOLATIONMEMORY_FREE (1 of 45 remaining) [2023-11-19 05:15:40,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK (0 of 45 remaining) [2023-11-19 05:15:40,946 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/mathsat -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 [2023-11-19 05:15:41,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-19 05:15:41,145 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:15:41,149 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 05:15:41,171 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem10 [2023-11-19 05:15:41,182 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 05:15:41 BoogieIcfgContainer [2023-11-19 05:15:41,182 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 05:15:41,183 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 05:15:41,183 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 05:15:41,183 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 05:15:41,183 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:15:26" (3/4) ... [2023-11-19 05:15:41,184 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-19 05:15:41,204 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem10 [2023-11-19 05:15:41,237 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/witness.graphml [2023-11-19 05:15:41,237 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 05:15:41,243 INFO L158 Benchmark]: Toolchain (without parser) took 16543.02ms. Allocated memory was 73.4MB in the beginning and 130.0MB in the end (delta: 56.6MB). Free memory was 47.3MB in the beginning and 60.9MB in the end (delta: -13.6MB). Peak memory consumption was 43.9MB. Max. memory is 16.1GB. [2023-11-19 05:15:41,244 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 73.4MB. Free memory was 48.7MB in the beginning and 48.7MB in the end (delta: 48.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:15:41,245 INFO L158 Benchmark]: CACSL2BoogieTranslator took 729.85ms. Allocated memory was 73.4MB in the beginning and 107.0MB in the end (delta: 33.6MB). Free memory was 47.2MB in the beginning and 67.4MB in the end (delta: -20.2MB). Peak memory consumption was 18.1MB. Max. memory is 16.1GB. [2023-11-19 05:15:41,245 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.36ms. Allocated memory is still 107.0MB. Free memory was 67.4MB in the beginning and 64.8MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 05:15:41,245 INFO L158 Benchmark]: Boogie Preprocessor took 46.30ms. Allocated memory is still 107.0MB. Free memory was 64.8MB in the beginning and 62.2MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 05:15:41,246 INFO L158 Benchmark]: RCFGBuilder took 1146.51ms. Allocated memory is still 107.0MB. Free memory was 62.2MB in the beginning and 69.0MB in the end (delta: -6.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-19 05:15:41,246 INFO L158 Benchmark]: TraceAbstraction took 14492.08ms. Allocated memory was 107.0MB in the beginning and 130.0MB in the end (delta: 23.1MB). Free memory was 68.5MB in the beginning and 62.0MB in the end (delta: 6.5MB). Peak memory consumption was 29.1MB. Max. memory is 16.1GB. [2023-11-19 05:15:41,247 INFO L158 Benchmark]: Witness Printer took 54.77ms. Allocated memory is still 130.0MB. Free memory was 62.0MB in the beginning and 60.9MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:15:41,251 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 73.4MB. Free memory was 48.7MB in the beginning and 48.7MB in the end (delta: 48.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 729.85ms. Allocated memory was 73.4MB in the beginning and 107.0MB in the end (delta: 33.6MB). Free memory was 47.2MB in the beginning and 67.4MB in the end (delta: -20.2MB). Peak memory consumption was 18.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 63.36ms. Allocated memory is still 107.0MB. Free memory was 67.4MB in the beginning and 64.8MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.30ms. Allocated memory is still 107.0MB. Free memory was 64.8MB in the beginning and 62.2MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1146.51ms. Allocated memory is still 107.0MB. Free memory was 62.2MB in the beginning and 69.0MB in the end (delta: -6.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 14492.08ms. Allocated memory was 107.0MB in the beginning and 130.0MB in the end (delta: 23.1MB). Free memory was 68.5MB in the beginning and 62.0MB in the end (delta: 6.5MB). Peak memory consumption was 29.1MB. Max. memory is 16.1GB. * Witness Printer took 54.77ms. Allocated memory is still 130.0MB. Free memory was 62.0MB in the beginning and 60.9MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem10 - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem10 - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: -1]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L2583] CALL, EXPR create() [L2554] struct hlist_head *head=malloc(sizeof(struct hlist_head)); [L2555] (head)->first = ((void *)0) VAL [head={1:0}] [L2556] COND FALSE !(__VERIFIER_nondet_int()) [L2562] return head; VAL [\result={1:0}, head={1:0}] [L2583] RET, EXPR create() [L2583] struct hlist_head *l = create(); [L2585] CALL loop(l) [L2566] struct my_item *now; VAL [head={1:0}, head={1:0}] [L2567] EXPR (head)->first VAL [head={1:0}, head={1:0}] [L2567] __typeof__((head)->first) ____ptr = ((head)->first); [L2567] EXPR ____ptr ? ({ void *__mptr = (void *)(____ptr); ((__typeof__(*(now)) *)(__mptr - __builtin_offsetof (__typeof__(*(now)), link))); }) : ((void *)0) [L2567] { __typeof__((head)->first) ____ptr = ((head)->first); ____ptr ? ({ void *__mptr = (void *)(____ptr); ((__typeof__(*(now)) *)(__mptr - __builtin_offsetof (__typeof__(*(now)), link))); }) : ((void *)0); } [L2567] { __typeof__((head)->first) ____ptr = ((head)->first); ____ptr ? ({ void *__mptr = (void *)(____ptr); ((__typeof__(*(now)) *)(__mptr - __builtin_offsetof (__typeof__(*(now)), link))); }) : ((void *)0); } [L2567] now = ({ __typeof__((head)->first) ____ptr = ((head)->first); ____ptr ? ({ void *__mptr = (void *)(____ptr); ((__typeof__(*(now)) *)(__mptr - __builtin_offsetof (__typeof__(*(now)), link))); }) : ((void *)0); }) [L2567] COND TRUE \read(*now) [L2568] FCALL do_data(&(now->data)) [L2567] (now)->link.next - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 2577]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 2577]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 2577]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 2579]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 2579]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 2579]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 2581]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 109 locations, 45 error locations. Started 1 CEGAR loops. OverallTime: 14.4s, OverallIterations: 16, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 7.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 851 SdHoareTripleChecker+Valid, 6.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 851 mSDsluCounter, 3359 SdHoareTripleChecker+Invalid, 6.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2033 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1327 IncrementalHoareTripleChecker+Invalid, 1342 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 1326 mSDtfsCounter, 1327 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 145 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=145occurred in iteration=15, InterpolantAutomatonStates: 67, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 15 MinimizatonAttempts, 221 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 156 NumberOfCodeBlocks, 156 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 127 ConstructedInterpolants, 0 QuantifiedInterpolants, 804 SizeOfPredicates, 56 NumberOfNonLiveVariables, 915 ConjunctsInSsa, 115 ConjunctsInUnsatCore, 15 InterpolantComputations, 15 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-11-19 05:15:41,294 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e3b30db-8d6c-4836-afea-179ba0651e92/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref)