./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/busybox-1.22.0/basename-2.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/busybox-1.22.0/basename-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash c899d9f75a53a80fe85551911016ababc48d03a22c1656000243377f27dbc4c0 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 06:30:15,351 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 06:30:15,352 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 06:30:15,365 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 06:30:15,365 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 06:30:15,366 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 06:30:15,367 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 06:30:15,368 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 06:30:15,369 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 06:30:15,370 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 06:30:15,370 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 06:30:15,371 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 06:30:15,371 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 06:30:15,372 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 06:30:15,373 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 06:30:15,374 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 06:30:15,374 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 06:30:15,375 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 06:30:15,376 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 06:30:15,377 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 06:30:15,378 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 06:30:15,380 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 06:30:15,381 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 06:30:15,382 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 06:30:15,385 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 06:30:15,386 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 06:30:15,386 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 06:30:15,387 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 06:30:15,387 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 06:30:15,388 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 06:30:15,389 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 06:30:15,389 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 06:30:15,390 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 06:30:15,391 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 06:30:15,392 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 06:30:15,392 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 06:30:15,393 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 06:30:15,393 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 06:30:15,393 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 06:30:15,394 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 06:30:15,394 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 06:30:15,395 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Default.epf [2022-12-14 06:30:15,416 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 06:30:15,417 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 06:30:15,417 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 06:30:15,417 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 06:30:15,418 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 06:30:15,418 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 06:30:15,418 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 06:30:15,418 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 06:30:15,419 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 06:30:15,419 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 06:30:15,419 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 06:30:15,419 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 06:30:15,419 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 06:30:15,420 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 06:30:15,420 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 06:30:15,420 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 06:30:15,420 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 06:30:15,420 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 06:30:15,421 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-14 06:30:15,421 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-14 06:30:15,421 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 06:30:15,422 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 06:30:15,422 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 06:30:15,422 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 06:30:15,422 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-14 06:30:15,422 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-14 06:30:15,422 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-14 06:30:15,423 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 06:30:15,423 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 06:30:15,423 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 06:30:15,423 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 06:30:15,423 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 06:30:15,424 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 06:30:15,424 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 06:30:15,424 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 06:30:15,424 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 06:30:15,424 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 06:30:15,425 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 06:30:15,425 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 06:30:15,425 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c899d9f75a53a80fe85551911016ababc48d03a22c1656000243377f27dbc4c0 [2022-12-14 06:30:15,612 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 06:30:15,631 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 06:30:15,633 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 06:30:15,633 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 06:30:15,634 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 06:30:15,635 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/busybox-1.22.0/basename-2.i [2022-12-14 06:30:18,216 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 06:30:18,446 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 06:30:18,447 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/sv-benchmarks/c/busybox-1.22.0/basename-2.i [2022-12-14 06:30:18,458 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/data/06f30ded0/defd8baad516423b91c95674f0d83f32/FLAGf44ed2360 [2022-12-14 06:30:18,783 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/data/06f30ded0/defd8baad516423b91c95674f0d83f32 [2022-12-14 06:30:18,785 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 06:30:18,786 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 06:30:18,787 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 06:30:18,787 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 06:30:18,790 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 06:30:18,791 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:30:18" (1/1) ... [2022-12-14 06:30:18,792 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b0f1403 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:30:18, skipping insertion in model container [2022-12-14 06:30:18,792 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:30:18" (1/1) ... [2022-12-14 06:30:18,798 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 06:30:18,843 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 06:30:19,193 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/sv-benchmarks/c/busybox-1.22.0/basename-2.i[58078,58091] [2022-12-14 06:30:19,202 WARN L623 FunctionHandler]: Unknown extern function strrchr [2022-12-14 06:30:19,209 WARN L623 FunctionHandler]: Unknown extern function write [2022-12-14 06:30:19,219 WARN L623 FunctionHandler]: Unknown extern function getopt [2022-12-14 06:30:19,228 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 06:30:19,238 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2022-12-14 06:30:19,238 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2b2ff73b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:30:19, skipping insertion in model container [2022-12-14 06:30:19,238 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 06:30:19,239 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-12-14 06:30:19,240 INFO L158 Benchmark]: Toolchain (without parser) took 453.66ms. Allocated memory was 113.2MB in the beginning and 169.9MB in the end (delta: 56.6MB). Free memory was 62.5MB in the beginning and 129.3MB in the end (delta: -66.8MB). Peak memory consumption was 11.0MB. Max. memory is 16.1GB. [2022-12-14 06:30:19,240 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 113.2MB. Free memory is still 84.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 06:30:19,241 INFO L158 Benchmark]: CACSL2BoogieTranslator took 451.89ms. Allocated memory was 113.2MB in the beginning and 169.9MB in the end (delta: 56.6MB). Free memory was 62.2MB in the beginning and 129.3MB in the end (delta: -67.0MB). Peak memory consumption was 11.0MB. Max. memory is 16.1GB. [2022-12-14 06:30:19,242 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 113.2MB. Free memory is still 84.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 451.89ms. Allocated memory was 113.2MB in the beginning and 169.9MB in the end (delta: 56.6MB). Free memory was 62.2MB in the beginning and 129.3MB in the end (delta: -67.0MB). Peak memory consumption was 11.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1515]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/busybox-1.22.0/basename-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash c899d9f75a53a80fe85551911016ababc48d03a22c1656000243377f27dbc4c0 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 06:30:20,634 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 06:30:20,636 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 06:30:20,656 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 06:30:20,656 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 06:30:20,657 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 06:30:20,659 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 06:30:20,660 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 06:30:20,662 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 06:30:20,663 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 06:30:20,664 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 06:30:20,665 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 06:30:20,665 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 06:30:20,666 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 06:30:20,667 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 06:30:20,668 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 06:30:20,669 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 06:30:20,670 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 06:30:20,671 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 06:30:20,673 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 06:30:20,674 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 06:30:20,675 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 06:30:20,677 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 06:30:20,677 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 06:30:20,680 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 06:30:20,681 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 06:30:20,681 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 06:30:20,681 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 06:30:20,682 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 06:30:20,682 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 06:30:20,682 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 06:30:20,683 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 06:30:20,683 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 06:30:20,684 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 06:30:20,684 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 06:30:20,685 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 06:30:20,685 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 06:30:20,685 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 06:30:20,685 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 06:30:20,686 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 06:30:20,686 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 06:30:20,687 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-64bit-Taipan_Bitvector.epf [2022-12-14 06:30:20,701 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 06:30:20,702 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 06:30:20,702 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 06:30:20,702 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 06:30:20,702 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 06:30:20,702 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 06:30:20,703 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 06:30:20,703 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 06:30:20,703 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 06:30:20,703 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 06:30:20,703 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 06:30:20,703 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 06:30:20,703 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-14 06:30:20,704 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-14 06:30:20,704 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 06:30:20,704 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 06:30:20,704 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 06:30:20,704 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 06:30:20,704 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-14 06:30:20,704 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-14 06:30:20,704 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-14 06:30:20,704 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 06:30:20,704 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 06:30:20,705 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 06:30:20,705 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 06:30:20,705 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 06:30:20,705 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 06:30:20,705 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 06:30:20,705 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 06:30:20,705 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 06:30:20,705 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 06:30:20,705 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 06:30:20,705 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 06:30:20,706 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 06:30:20,706 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 06:30:20,706 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 06:30:20,706 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c899d9f75a53a80fe85551911016ababc48d03a22c1656000243377f27dbc4c0 [2022-12-14 06:30:20,907 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 06:30:20,922 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 06:30:20,924 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 06:30:20,925 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 06:30:20,925 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 06:30:20,926 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/busybox-1.22.0/basename-2.i [2022-12-14 06:30:23,474 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 06:30:23,730 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 06:30:23,730 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/sv-benchmarks/c/busybox-1.22.0/basename-2.i [2022-12-14 06:30:23,745 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/data/e9f29317c/9af9cc6a866c424090fb7df73bd956f5/FLAGd7fc325b8 [2022-12-14 06:30:24,040 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/data/e9f29317c/9af9cc6a866c424090fb7df73bd956f5 [2022-12-14 06:30:24,042 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 06:30:24,044 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 06:30:24,044 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 06:30:24,044 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 06:30:24,047 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 06:30:24,048 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:30:24" (1/1) ... [2022-12-14 06:30:24,048 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58223a9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:30:24, skipping insertion in model container [2022-12-14 06:30:24,048 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:30:24" (1/1) ... [2022-12-14 06:30:24,053 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 06:30:24,098 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 06:30:24,526 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/sv-benchmarks/c/busybox-1.22.0/basename-2.i[58078,58091] [2022-12-14 06:30:24,534 WARN L623 FunctionHandler]: Unknown extern function strrchr [2022-12-14 06:30:24,541 WARN L623 FunctionHandler]: Unknown extern function write [2022-12-14 06:30:24,550 WARN L623 FunctionHandler]: Unknown extern function getopt [2022-12-14 06:30:24,559 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 06:30:24,570 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-12-14 06:30:24,577 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 06:30:24,600 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/sv-benchmarks/c/busybox-1.22.0/basename-2.i[58078,58091] [2022-12-14 06:30:24,604 WARN L623 FunctionHandler]: Unknown extern function strrchr [2022-12-14 06:30:24,609 WARN L623 FunctionHandler]: Unknown extern function write [2022-12-14 06:30:24,614 WARN L623 FunctionHandler]: Unknown extern function getopt [2022-12-14 06:30:24,620 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 06:30:24,624 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 06:30:24,653 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/sv-benchmarks/c/busybox-1.22.0/basename-2.i[58078,58091] [2022-12-14 06:30:24,656 WARN L623 FunctionHandler]: Unknown extern function strrchr [2022-12-14 06:30:24,661 WARN L623 FunctionHandler]: Unknown extern function write [2022-12-14 06:30:24,665 WARN L623 FunctionHandler]: Unknown extern function getopt [2022-12-14 06:30:24,670 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 06:30:24,722 INFO L208 MainTranslator]: Completed translation [2022-12-14 06:30:24,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:30:24 WrapperNode [2022-12-14 06:30:24,723 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 06:30:24,723 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 06:30:24,724 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 06:30:24,724 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 06:30:24,729 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:30:24" (1/1) ... [2022-12-14 06:30:24,748 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:30:24" (1/1) ... [2022-12-14 06:30:24,770 INFO L138 Inliner]: procedures = 353, calls = 114, calls flagged for inlining = 10, calls inlined = 9, statements flattened = 370 [2022-12-14 06:30:24,770 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 06:30:24,771 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 06:30:24,771 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 06:30:24,771 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 06:30:24,777 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:30:24" (1/1) ... [2022-12-14 06:30:24,778 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:30:24" (1/1) ... [2022-12-14 06:30:24,782 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:30:24" (1/1) ... [2022-12-14 06:30:24,783 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:30:24" (1/1) ... [2022-12-14 06:30:24,795 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:30:24" (1/1) ... [2022-12-14 06:30:24,798 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:30:24" (1/1) ... [2022-12-14 06:30:24,802 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:30:24" (1/1) ... [2022-12-14 06:30:24,804 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:30:24" (1/1) ... [2022-12-14 06:30:24,808 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 06:30:24,809 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 06:30:24,809 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 06:30:24,809 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 06:30:24,809 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:30:24" (1/1) ... [2022-12-14 06:30:24,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 06:30:24,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:30:24,838 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 06:30:24,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 06:30:24,871 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-12-14 06:30:24,872 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-12-14 06:30:24,872 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-12-14 06:30:24,872 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-12-14 06:30:24,872 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 06:30:24,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-12-14 06:30:24,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 06:30:24,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-12-14 06:30:24,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-14 06:30:24,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-12-14 06:30:24,873 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 06:30:24,873 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2022-12-14 06:30:24,873 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 06:30:24,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 06:30:24,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 06:30:24,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 06:30:25,171 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 06:30:25,173 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 06:30:26,321 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 06:30:26,328 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 06:30:26,328 INFO L300 CfgBuilder]: Removed 9 assume(true) statements. [2022-12-14 06:30:26,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:30:26 BoogieIcfgContainer [2022-12-14 06:30:26,331 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 06:30:26,333 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 06:30:26,333 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 06:30:26,336 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 06:30:26,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 06:30:24" (1/3) ... [2022-12-14 06:30:26,337 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ce355cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:30:26, skipping insertion in model container [2022-12-14 06:30:26,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:30:24" (2/3) ... [2022-12-14 06:30:26,337 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ce355cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:30:26, skipping insertion in model container [2022-12-14 06:30:26,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:30:26" (3/3) ... [2022-12-14 06:30:26,339 INFO L112 eAbstractionObserver]: Analyzing ICFG basename-2.i [2022-12-14 06:30:26,357 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 06:30:26,357 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 94 error locations. [2022-12-14 06:30:26,402 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 06:30:26,407 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;@284e09d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 06:30:26,407 INFO L358 AbstractCegarLoop]: Starting to check reachability of 94 error locations. [2022-12-14 06:30:26,410 INFO L276 IsEmpty]: Start isEmpty. Operand has 240 states, 142 states have (on average 1.9507042253521127) internal successors, (277), 236 states have internal predecessors, (277), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 06:30:26,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-14 06:30:26,414 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:30:26,415 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-14 06:30:26,415 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2022-12-14 06:30:26,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:30:26,419 INFO L85 PathProgramCache]: Analyzing trace with hash 37801, now seen corresponding path program 1 times [2022-12-14 06:30:26,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 06:30:26,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1683058807] [2022-12-14 06:30:26,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:30:26,430 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:30:26,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 06:30:26,431 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 06:30:26,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-12-14 06:30:26,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:30:26,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 06:30:26,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:30:26,624 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-14 06:30:26,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:30:26,635 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 06:30:26,636 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 06:30:26,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1683058807] [2022-12-14 06:30:26,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1683058807] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:30:26,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:30:26,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 06:30:26,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703539695] [2022-12-14 06:30:26,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:30:26,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:30:26,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 06:30:26,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:30:26,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:30:26,672 INFO L87 Difference]: Start difference. First operand has 240 states, 142 states have (on average 1.9507042253521127) internal successors, (277), 236 states have internal predecessors, (277), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:30:27,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:30:27,073 INFO L93 Difference]: Finished difference Result 250 states and 281 transitions. [2022-12-14 06:30:27,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:30:27,075 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-12-14 06:30:27,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:30:27,081 INFO L225 Difference]: With dead ends: 250 [2022-12-14 06:30:27,081 INFO L226 Difference]: Without dead ends: 248 [2022-12-14 06:30:27,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:30:27,084 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 235 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 06:30:27,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 201 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 06:30:27,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2022-12-14 06:30:27,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 232. [2022-12-14 06:30:27,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 139 states have (on average 1.856115107913669) internal successors, (258), 228 states have internal predecessors, (258), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 06:30:27,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 262 transitions. [2022-12-14 06:30:27,116 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 262 transitions. Word has length 3 [2022-12-14 06:30:27,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:30:27,116 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 262 transitions. [2022-12-14 06:30:27,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:30:27,116 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 262 transitions. [2022-12-14 06:30:27,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-14 06:30:27,116 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:30:27,116 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-14 06:30:27,128 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-12-14 06:30:27,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:30:27,319 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2022-12-14 06:30:27,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:30:27,321 INFO L85 PathProgramCache]: Analyzing trace with hash 37802, now seen corresponding path program 1 times [2022-12-14 06:30:27,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 06:30:27,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [953712425] [2022-12-14 06:30:27,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:30:27,324 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:30:27,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 06:30:27,328 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 06:30:27,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-12-14 06:30:27,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:30:27,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 06:30:27,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:30:27,470 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 06:30:27,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:30:27,479 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 06:30:27,479 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 06:30:27,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [953712425] [2022-12-14 06:30:27,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [953712425] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:30:27,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:30:27,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 06:30:27,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058095867] [2022-12-14 06:30:27,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:30:27,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:30:27,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 06:30:27,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:30:27,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:30:27,481 INFO L87 Difference]: Start difference. First operand 232 states and 262 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:30:28,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:30:28,212 INFO L93 Difference]: Finished difference Result 231 states and 261 transitions. [2022-12-14 06:30:28,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:30:28,213 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-12-14 06:30:28,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:30:28,214 INFO L225 Difference]: With dead ends: 231 [2022-12-14 06:30:28,214 INFO L226 Difference]: Without dead ends: 231 [2022-12-14 06:30:28,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:30:28,215 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 13 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-14 06:30:28,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 418 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-14 06:30:28,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2022-12-14 06:30:28,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2022-12-14 06:30:28,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 139 states have (on average 1.8489208633093526) internal successors, (257), 227 states have internal predecessors, (257), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 06:30:28,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 261 transitions. [2022-12-14 06:30:28,226 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 261 transitions. Word has length 3 [2022-12-14 06:30:28,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:30:28,226 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 261 transitions. [2022-12-14 06:30:28,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:30:28,226 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 261 transitions. [2022-12-14 06:30:28,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 06:30:28,227 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:30:28,227 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-14 06:30:28,240 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-12-14 06:30:28,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:30:28,429 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2022-12-14 06:30:28,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:30:28,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1126113961, now seen corresponding path program 1 times [2022-12-14 06:30:28,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 06:30:28,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [611139717] [2022-12-14 06:30:28,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:30:28,434 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:30:28,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 06:30:28,435 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 06:30:28,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-12-14 06:30:28,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:30:28,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 06:30:28,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:30:28,549 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 06:30:28,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:30:28,597 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 06:30:28,597 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 06:30:28,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [611139717] [2022-12-14 06:30:28,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [611139717] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:30:28,598 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:30:28,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 06:30:28,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956847077] [2022-12-14 06:30:28,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:30:28,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 06:30:28,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 06:30:28,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 06:30:28,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 06:30:28,599 INFO L87 Difference]: Start difference. First operand 231 states and 261 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:30:29,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:30:29,487 INFO L93 Difference]: Finished difference Result 235 states and 265 transitions. [2022-12-14 06:30:29,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 06:30:29,488 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-12-14 06:30:29,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:30:29,489 INFO L225 Difference]: With dead ends: 235 [2022-12-14 06:30:29,489 INFO L226 Difference]: Without dead ends: 235 [2022-12-14 06:30:29,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 06:30:29,490 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 14 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 583 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-14 06:30:29,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 583 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-14 06:30:29,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2022-12-14 06:30:29,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 233. [2022-12-14 06:30:29,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 141 states have (on average 1.8368794326241136) internal successors, (259), 229 states have internal predecessors, (259), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 06:30:29,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 263 transitions. [2022-12-14 06:30:29,497 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 263 transitions. Word has length 6 [2022-12-14 06:30:29,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:30:29,498 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 263 transitions. [2022-12-14 06:30:29,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:30:29,498 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 263 transitions. [2022-12-14 06:30:29,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-14 06:30:29,498 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:30:29,498 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:30:29,509 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-12-14 06:30:29,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:30:29,700 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2022-12-14 06:30:29,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:30:29,701 INFO L85 PathProgramCache]: Analyzing trace with hash -2080656212, now seen corresponding path program 1 times [2022-12-14 06:30:29,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 06:30:29,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [746870060] [2022-12-14 06:30:29,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:30:29,702 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:30:29,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 06:30:29,703 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 06:30:29,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-12-14 06:30:29,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:30:29,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 06:30:29,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:30:29,847 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 06:30:29,955 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:30:29,956 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:30:30,542 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:30:30,542 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 06:30:30,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [746870060] [2022-12-14 06:30:30,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [746870060] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 06:30:30,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [938703237] [2022-12-14 06:30:30,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:30:30,543 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 06:30:30,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 06:30:30,544 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 06:30:30,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2022-12-14 06:30:30,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:30:30,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 06:30:30,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:30:30,843 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 06:30:30,889 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:30:30,889 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:30:31,123 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:30:31,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [938703237] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 06:30:31,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689143053] [2022-12-14 06:30:31,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:30:31,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:30:31,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:30:31,124 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 06:30:31,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 06:30:31,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:30:31,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 06:30:31,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:30:31,231 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 06:30:31,276 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:30:31,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:30:31,490 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:30:31,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689143053] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 06:30:31,490 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 06:30:31,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 7 [2022-12-14 06:30:31,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653680868] [2022-12-14 06:30:31,491 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 06:30:31,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 06:30:31,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 06:30:31,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 06:30:31,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-14 06:30:31,492 INFO L87 Difference]: Start difference. First operand 233 states and 263 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:30:35,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:30:35,221 INFO L93 Difference]: Finished difference Result 239 states and 269 transitions. [2022-12-14 06:30:35,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 06:30:35,222 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-12-14 06:30:35,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:30:35,224 INFO L225 Difference]: With dead ends: 239 [2022-12-14 06:30:35,224 INFO L226 Difference]: Without dead ends: 239 [2022-12-14 06:30:35,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2022-12-14 06:30:35,224 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 36 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 916 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-12-14 06:30:35,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 916 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-12-14 06:30:35,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2022-12-14 06:30:35,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2022-12-14 06:30:35,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 148 states have (on average 1.7905405405405406) internal successors, (265), 235 states have internal predecessors, (265), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 06:30:35,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 269 transitions. [2022-12-14 06:30:35,230 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 269 transitions. Word has length 10 [2022-12-14 06:30:35,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:30:35,231 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 269 transitions. [2022-12-14 06:30:35,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:30:35,231 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 269 transitions. [2022-12-14 06:30:35,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-12-14 06:30:35,231 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:30:35,231 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:30:35,235 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (6)] Ended with exit code 0 [2022-12-14 06:30:35,467 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-12-14 06:30:35,644 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-14 06:30:35,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:30:35,834 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2022-12-14 06:30:35,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:30:35,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1026813049, now seen corresponding path program 1 times [2022-12-14 06:30:35,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 06:30:35,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [231228208] [2022-12-14 06:30:35,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:30:35,837 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:30:35,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 06:30:35,838 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 06:30:35,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-12-14 06:30:35,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:30:35,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 06:30:35,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:30:35,988 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:30:35,988 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:30:36,061 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:30:36,062 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 06:30:36,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [231228208] [2022-12-14 06:30:36,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [231228208] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 06:30:36,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2085821052] [2022-12-14 06:30:36,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:30:36,062 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 06:30:36,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 06:30:36,063 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 06:30:36,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2022-12-14 06:30:36,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:30:36,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 06:30:36,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:30:36,377 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:30:36,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:30:36,408 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:30:36,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2085821052] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 06:30:36,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168685985] [2022-12-14 06:30:36,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:30:36,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:30:36,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:30:36,410 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 06:30:36,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-14 06:30:36,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:30:36,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-14 06:30:36,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:30:36,551 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 06:30:36,682 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-12-14 06:30:36,687 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:30:36,687 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:30:37,222 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:30:37,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1168685985] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 06:30:37,222 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 06:30:37,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 8, 8] total 18 [2022-12-14 06:30:37,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590584474] [2022-12-14 06:30:37,223 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 06:30:37,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-14 06:30:37,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 06:30:37,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-14 06:30:37,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2022-12-14 06:30:37,224 INFO L87 Difference]: Start difference. First operand 239 states and 269 transitions. Second operand has 18 states, 18 states have (on average 3.1666666666666665) internal successors, (57), 18 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:30:42,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:30:42,224 INFO L93 Difference]: Finished difference Result 438 states and 496 transitions. [2022-12-14 06:30:42,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-14 06:30:42,226 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.1666666666666665) internal successors, (57), 18 states have internal predecessors, (57), 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 19 [2022-12-14 06:30:42,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:30:42,227 INFO L225 Difference]: With dead ends: 438 [2022-12-14 06:30:42,227 INFO L226 Difference]: Without dead ends: 438 [2022-12-14 06:30:42,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=195, Invalid=405, Unknown=0, NotChecked=0, Total=600 [2022-12-14 06:30:42,228 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 687 mSDsluCounter, 1304 mSDsCounter, 0 mSdLazyCounter, 782 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 687 SdHoareTripleChecker+Valid, 1495 SdHoareTripleChecker+Invalid, 798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-12-14 06:30:42,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [687 Valid, 1495 Invalid, 798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 782 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-12-14 06:30:42,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2022-12-14 06:30:42,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 259. [2022-12-14 06:30:42,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 168 states have (on average 1.6964285714285714) internal successors, (285), 255 states have internal predecessors, (285), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 06:30:42,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 289 transitions. [2022-12-14 06:30:42,235 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 289 transitions. Word has length 19 [2022-12-14 06:30:42,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:30:42,235 INFO L495 AbstractCegarLoop]: Abstraction has 259 states and 289 transitions. [2022-12-14 06:30:42,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.1666666666666665) internal successors, (57), 18 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:30:42,235 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 289 transitions. [2022-12-14 06:30:42,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-12-14 06:30:42,235 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:30:42,235 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:30:42,239 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2022-12-14 06:30:42,451 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-12-14 06:30:42,648 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-14 06:30:42,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:30:42,839 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2022-12-14 06:30:42,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:30:42,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1411098840, now seen corresponding path program 2 times [2022-12-14 06:30:42,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 06:30:42,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [850342327] [2022-12-14 06:30:42,842 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 06:30:42,843 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:30:42,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 06:30:42,846 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 06:30:42,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-12-14 06:30:43,051 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-14 06:30:43,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 06:30:43,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 06:30:43,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:30:43,080 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 06:30:43,080 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-12-14 06:30:43,224 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2022-12-14 06:30:43,225 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 06:30:43,225 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 06:30:43,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [850342327] [2022-12-14 06:30:43,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [850342327] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:30:43,225 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:30:43,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 06:30:43,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808012534] [2022-12-14 06:30:43,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:30:43,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:30:43,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 06:30:43,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:30:43,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:30:43,227 INFO L87 Difference]: Start difference. First operand 259 states and 289 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 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) [2022-12-14 06:30:43,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:30:43,598 INFO L93 Difference]: Finished difference Result 274 states and 305 transitions. [2022-12-14 06:30:43,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:30:43,599 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 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 39 [2022-12-14 06:30:43,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:30:43,599 INFO L225 Difference]: With dead ends: 274 [2022-12-14 06:30:43,599 INFO L226 Difference]: Without dead ends: 274 [2022-12-14 06:30:43,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:30:43,600 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 231 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 06:30:43,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 196 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 06:30:43,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2022-12-14 06:30:43,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 258. [2022-12-14 06:30:43,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 168 states have (on average 1.6904761904761905) internal successors, (284), 254 states have internal predecessors, (284), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 06:30:43,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 288 transitions. [2022-12-14 06:30:43,605 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 288 transitions. Word has length 39 [2022-12-14 06:30:43,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:30:43,605 INFO L495 AbstractCegarLoop]: Abstraction has 258 states and 288 transitions. [2022-12-14 06:30:43,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 2 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) [2022-12-14 06:30:43,605 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 288 transitions. [2022-12-14 06:30:43,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-12-14 06:30:43,606 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:30:43,606 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:30:43,616 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-12-14 06:30:43,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:30:43,808 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2022-12-14 06:30:43,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:30:43,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1411098841, now seen corresponding path program 1 times [2022-12-14 06:30:43,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 06:30:43,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1468281305] [2022-12-14 06:30:43,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:30:43,817 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:30:43,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 06:30:43,818 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 06:30:43,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-12-14 06:30:43,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:30:43,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-14 06:30:43,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:30:44,089 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:30:44,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:30:44,337 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:30:44,338 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 06:30:44,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1468281305] [2022-12-14 06:30:44,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1468281305] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 06:30:44,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1883925426] [2022-12-14 06:30:44,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:30:44,338 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 06:30:44,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 06:30:44,339 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 06:30:44,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2022-12-14 06:30:44,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:30:44,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-14 06:30:44,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:30:44,799 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:30:44,799 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:30:44,867 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:30:44,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1883925426] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 06:30:44,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570461964] [2022-12-14 06:30:44,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:30:44,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:30:44,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:30:44,869 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 06:30:44,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-14 06:30:44,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:30:45,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-14 06:30:45,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:30:45,011 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 06:30:45,375 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2022-12-14 06:30:45,381 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:30:45,381 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:30:51,293 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:30:51,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1570461964] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 06:30:51,294 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 06:30:51,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11, 11, 13, 13] total 38 [2022-12-14 06:30:51,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131913618] [2022-12-14 06:30:51,294 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 06:30:51,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-12-14 06:30:51,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 06:30:51,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-12-14 06:30:51,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=371, Invalid=1035, Unknown=0, NotChecked=0, Total=1406 [2022-12-14 06:30:51,296 INFO L87 Difference]: Start difference. First operand 258 states and 288 transitions. Second operand has 38 states, 38 states have (on average 3.6052631578947367) internal successors, (137), 38 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:31:12,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:31:12,597 INFO L93 Difference]: Finished difference Result 477 states and 536 transitions. [2022-12-14 06:31:12,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-14 06:31:12,603 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.6052631578947367) internal successors, (137), 38 states have internal predecessors, (137), 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 39 [2022-12-14 06:31:12,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:31:12,604 INFO L225 Difference]: With dead ends: 477 [2022-12-14 06:31:12,604 INFO L226 Difference]: Without dead ends: 477 [2022-12-14 06:31:12,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 585 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=617, Invalid=1933, Unknown=0, NotChecked=0, Total=2550 [2022-12-14 06:31:12,605 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 1787 mSDsluCounter, 3029 mSDsCounter, 0 mSdLazyCounter, 1745 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1787 SdHoareTripleChecker+Valid, 3240 SdHoareTripleChecker+Invalid, 1789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.6s IncrementalHoareTripleChecker+Time [2022-12-14 06:31:12,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1787 Valid, 3240 Invalid, 1789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1745 Invalid, 0 Unknown, 0 Unchecked, 15.6s Time] [2022-12-14 06:31:12,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2022-12-14 06:31:12,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 298. [2022-12-14 06:31:12,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 208 states have (on average 1.5625) internal successors, (325), 294 states have internal predecessors, (325), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 06:31:12,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 329 transitions. [2022-12-14 06:31:12,613 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 329 transitions. Word has length 39 [2022-12-14 06:31:12,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:31:12,613 INFO L495 AbstractCegarLoop]: Abstraction has 298 states and 329 transitions. [2022-12-14 06:31:12,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.6052631578947367) internal successors, (137), 38 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:31:12,613 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 329 transitions. [2022-12-14 06:31:12,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-12-14 06:31:12,614 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:31:12,614 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:31:12,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-12-14 06:31:12,829 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2022-12-14 06:31:13,029 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2022-12-14 06:31:13,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt [2022-12-14 06:31:13,217 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2022-12-14 06:31:13,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:31:13,219 INFO L85 PathProgramCache]: Analyzing trace with hash 233252627, now seen corresponding path program 2 times [2022-12-14 06:31:13,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 06:31:13,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [574900160] [2022-12-14 06:31:13,221 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 06:31:13,222 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:31:13,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 06:31:13,225 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 06:31:13,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-12-14 06:31:13,362 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-14 06:31:13,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 06:31:13,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 06:31:13,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:31:13,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:31:13,400 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-12-14 06:31:13,709 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-12-14 06:31:13,709 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 06:31:13,709 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 06:31:13,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [574900160] [2022-12-14 06:31:13,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [574900160] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:31:13,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:31:13,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 06:31:13,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207104873] [2022-12-14 06:31:13,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:31:13,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 06:31:13,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 06:31:13,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 06:31:13,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 06:31:13,710 INFO L87 Difference]: Start difference. First operand 298 states and 329 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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) [2022-12-14 06:31:14,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:31:14,379 INFO L93 Difference]: Finished difference Result 313 states and 345 transitions. [2022-12-14 06:31:14,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 06:31:14,380 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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 47 [2022-12-14 06:31:14,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:31:14,381 INFO L225 Difference]: With dead ends: 313 [2022-12-14 06:31:14,381 INFO L226 Difference]: Without dead ends: 313 [2022-12-14 06:31:14,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 06:31:14,382 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 271 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-14 06:31:14,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 152 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-14 06:31:14,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2022-12-14 06:31:14,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 297. [2022-12-14 06:31:14,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 208 states have (on average 1.5576923076923077) internal successors, (324), 293 states have internal predecessors, (324), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 06:31:14,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 328 transitions. [2022-12-14 06:31:14,386 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 328 transitions. Word has length 47 [2022-12-14 06:31:14,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:31:14,386 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 328 transitions. [2022-12-14 06:31:14,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 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) [2022-12-14 06:31:14,386 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 328 transitions. [2022-12-14 06:31:14,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-12-14 06:31:14,387 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:31:14,387 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:31:14,397 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/mathsat -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)] Ended with exit code 0 [2022-12-14 06:31:14,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:31:14,589 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2022-12-14 06:31:14,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:31:14,590 INFO L85 PathProgramCache]: Analyzing trace with hash 352994194, now seen corresponding path program 1 times [2022-12-14 06:31:14,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 06:31:14,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [668027825] [2022-12-14 06:31:14,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:31:14,593 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:31:14,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 06:31:14,596 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 06:31:14,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-12-14 06:31:15,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:31:15,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 06:31:15,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:31:15,098 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 06:31:15,099 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-12-14 06:31:15,126 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-12-14 06:31:15,127 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 06:31:15,127 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 06:31:15,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [668027825] [2022-12-14 06:31:15,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [668027825] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:31:15,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:31:15,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 06:31:15,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434839769] [2022-12-14 06:31:15,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:31:15,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:31:15,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 06:31:15,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:31:15,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:31:15,129 INFO L87 Difference]: Start difference. First operand 297 states and 328 transitions. Second operand has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 06:31:15,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:31:15,546 INFO L93 Difference]: Finished difference Result 308 states and 340 transitions. [2022-12-14 06:31:15,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:31:15,546 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 55 [2022-12-14 06:31:15,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:31:15,547 INFO L225 Difference]: With dead ends: 308 [2022-12-14 06:31:15,547 INFO L226 Difference]: Without dead ends: 308 [2022-12-14 06:31:15,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:31:15,548 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 216 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 06:31:15,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 205 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 06:31:15,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2022-12-14 06:31:15,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 292. [2022-12-14 06:31:15,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 208 states have (on average 1.5336538461538463) internal successors, (319), 288 states have internal predecessors, (319), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 06:31:15,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 323 transitions. [2022-12-14 06:31:15,552 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 323 transitions. Word has length 55 [2022-12-14 06:31:15,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:31:15,552 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 323 transitions. [2022-12-14 06:31:15,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 06:31:15,552 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 323 transitions. [2022-12-14 06:31:15,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-12-14 06:31:15,553 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:31:15,553 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:31:15,566 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-12-14 06:31:15,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:31:15,755 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2022-12-14 06:31:15,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:31:15,756 INFO L85 PathProgramCache]: Analyzing trace with hash 352994195, now seen corresponding path program 1 times [2022-12-14 06:31:15,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 06:31:15,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1887650090] [2022-12-14 06:31:15,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:31:15,759 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:31:15,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 06:31:15,762 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 06:31:15,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-12-14 06:31:16,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:31:16,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 06:31:16,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:31:16,289 INFO L321 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2022-12-14 06:31:16,289 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 21 [2022-12-14 06:31:16,391 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-12-14 06:31:16,391 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 06:31:16,392 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 06:31:16,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1887650090] [2022-12-14 06:31:16,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1887650090] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:31:16,392 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:31:16,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 06:31:16,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183032190] [2022-12-14 06:31:16,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:31:16,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 06:31:16,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 06:31:16,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 06:31:16,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 06:31:16,393 INFO L87 Difference]: Start difference. First operand 292 states and 323 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 06:31:17,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:31:17,778 INFO L93 Difference]: Finished difference Result 469 states and 528 transitions. [2022-12-14 06:31:17,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 06:31:17,779 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 55 [2022-12-14 06:31:17,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:31:17,780 INFO L225 Difference]: With dead ends: 469 [2022-12-14 06:31:17,780 INFO L226 Difference]: Without dead ends: 469 [2022-12-14 06:31:17,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-12-14 06:31:17,781 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 438 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 315 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 756 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-12-14 06:31:17,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [440 Valid, 756 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 315 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-12-14 06:31:17,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2022-12-14 06:31:17,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 393. [2022-12-14 06:31:17,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 309 states have (on average 1.6504854368932038) internal successors, (510), 388 states have internal predecessors, (510), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-14 06:31:17,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 516 transitions. [2022-12-14 06:31:17,786 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 516 transitions. Word has length 55 [2022-12-14 06:31:17,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:31:17,786 INFO L495 AbstractCegarLoop]: Abstraction has 393 states and 516 transitions. [2022-12-14 06:31:17,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 06:31:17,787 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 516 transitions. [2022-12-14 06:31:17,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-12-14 06:31:17,787 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:31:17,787 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:31:17,803 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/mathsat -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)] Ended with exit code 0 [2022-12-14 06:31:17,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:31:17,988 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2022-12-14 06:31:17,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:31:17,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1970105020, now seen corresponding path program 1 times [2022-12-14 06:31:17,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 06:31:17,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2043713577] [2022-12-14 06:31:17,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:31:17,992 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:31:17,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 06:31:17,995 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 06:31:17,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-12-14 06:31:18,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:31:18,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-14 06:31:18,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:31:18,573 INFO L321 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2022-12-14 06:31:18,573 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 21 [2022-12-14 06:31:18,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:31:18,921 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2022-12-14 06:31:18,921 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 36 [2022-12-14 06:31:18,946 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-14 06:31:18,946 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-14 06:31:19,072 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-12-14 06:31:19,072 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 06:31:19,072 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 06:31:19,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2043713577] [2022-12-14 06:31:19,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2043713577] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:31:19,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:31:19,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-14 06:31:19,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565546152] [2022-12-14 06:31:19,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:31:19,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-14 06:31:19,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 06:31:19,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-14 06:31:19,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-12-14 06:31:19,075 INFO L87 Difference]: Start difference. First operand 393 states and 516 transitions. Second operand has 9 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 06:31:23,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:31:23,413 INFO L93 Difference]: Finished difference Result 327 states and 360 transitions. [2022-12-14 06:31:23,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 06:31:23,414 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 58 [2022-12-14 06:31:23,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:31:23,415 INFO L225 Difference]: With dead ends: 327 [2022-12-14 06:31:23,415 INFO L226 Difference]: Without dead ends: 327 [2022-12-14 06:31:23,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-12-14 06:31:23,415 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 793 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 661 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 793 SdHoareTripleChecker+Valid, 601 SdHoareTripleChecker+Invalid, 674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:31:23,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [793 Valid, 601 Invalid, 674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 661 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-12-14 06:31:23,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2022-12-14 06:31:23,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 304. [2022-12-14 06:31:23,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 222 states have (on average 1.5225225225225225) internal successors, (338), 300 states have internal predecessors, (338), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 06:31:23,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 342 transitions. [2022-12-14 06:31:23,419 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 342 transitions. Word has length 58 [2022-12-14 06:31:23,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:31:23,419 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 342 transitions. [2022-12-14 06:31:23,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 06:31:23,420 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 342 transitions. [2022-12-14 06:31:23,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-12-14 06:31:23,420 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:31:23,420 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:31:23,434 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2022-12-14 06:31:23,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:31:23,622 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2022-12-14 06:31:23,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:31:23,623 INFO L85 PathProgramCache]: Analyzing trace with hash 670545056, now seen corresponding path program 1 times [2022-12-14 06:31:23,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 06:31:23,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [446602922] [2022-12-14 06:31:23,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:31:23,625 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:31:23,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 06:31:23,628 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 06:31:23,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-12-14 06:31:24,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:31:24,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 06:31:24,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:31:24,047 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-12-14 06:31:24,048 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 19 [2022-12-14 06:31:24,071 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-14 06:31:24,071 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-12-14 06:31:24,090 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-12-14 06:31:24,090 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 06:31:24,090 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 06:31:24,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [446602922] [2022-12-14 06:31:24,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [446602922] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:31:24,090 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:31:24,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 06:31:24,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178201727] [2022-12-14 06:31:24,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:31:24,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:31:24,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 06:31:24,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:31:24,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:31:24,091 INFO L87 Difference]: Start difference. First operand 304 states and 342 transitions. Second operand has 3 states, 2 states have (on average 11.5) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 06:31:24,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:31:24,457 INFO L93 Difference]: Finished difference Result 311 states and 349 transitions. [2022-12-14 06:31:24,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:31:24,457 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 11.5) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 61 [2022-12-14 06:31:24,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:31:24,458 INFO L225 Difference]: With dead ends: 311 [2022-12-14 06:31:24,458 INFO L226 Difference]: Without dead ends: 311 [2022-12-14 06:31:24,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:31:24,459 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 207 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 06:31:24,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 201 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 06:31:24,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2022-12-14 06:31:24,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 308. [2022-12-14 06:31:24,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 227 states have (on average 1.5198237885462555) internal successors, (345), 304 states have internal predecessors, (345), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 06:31:24,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 349 transitions. [2022-12-14 06:31:24,463 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 349 transitions. Word has length 61 [2022-12-14 06:31:24,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:31:24,463 INFO L495 AbstractCegarLoop]: Abstraction has 308 states and 349 transitions. [2022-12-14 06:31:24,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 11.5) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 06:31:24,463 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 349 transitions. [2022-12-14 06:31:24,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-12-14 06:31:24,463 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:31:24,464 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:31:24,483 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-12-14 06:31:24,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:31:24,664 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2022-12-14 06:31:24,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:31:24,664 INFO L85 PathProgramCache]: Analyzing trace with hash 670545057, now seen corresponding path program 1 times [2022-12-14 06:31:24,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 06:31:24,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [931782917] [2022-12-14 06:31:24,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:31:24,665 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:31:24,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 06:31:24,666 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 06:31:24,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-12-14 06:31:25,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:31:25,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-14 06:31:25,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:31:25,159 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-12-14 06:31:25,160 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-12-14 06:31:25,189 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-12-14 06:31:25,189 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 19 [2022-12-14 06:31:25,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:31:25,387 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2022-12-14 06:31:25,395 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-14 06:31:25,396 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-14 06:31:25,519 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-12-14 06:31:25,519 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 06:31:25,519 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 06:31:25,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [931782917] [2022-12-14 06:31:25,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [931782917] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:31:25,519 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:31:25,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 06:31:25,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979579356] [2022-12-14 06:31:25,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:31:25,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 06:31:25,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 06:31:25,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 06:31:25,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-12-14 06:31:25,521 INFO L87 Difference]: Start difference. First operand 308 states and 349 transitions. Second operand has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 06:31:28,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:31:28,170 INFO L93 Difference]: Finished difference Result 321 states and 354 transitions. [2022-12-14 06:31:28,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 06:31:28,171 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 61 [2022-12-14 06:31:28,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:31:28,172 INFO L225 Difference]: With dead ends: 321 [2022-12-14 06:31:28,172 INFO L226 Difference]: Without dead ends: 321 [2022-12-14 06:31:28,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-12-14 06:31:28,173 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 510 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 510 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-12-14 06:31:28,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [510 Valid, 525 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-12-14 06:31:28,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2022-12-14 06:31:28,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 308. [2022-12-14 06:31:28,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 227 states have (on average 1.5110132158590308) internal successors, (343), 304 states have internal predecessors, (343), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 06:31:28,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 347 transitions. [2022-12-14 06:31:28,177 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 347 transitions. Word has length 61 [2022-12-14 06:31:28,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:31:28,177 INFO L495 AbstractCegarLoop]: Abstraction has 308 states and 347 transitions. [2022-12-14 06:31:28,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 06:31:28,177 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 347 transitions. [2022-12-14 06:31:28,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-12-14 06:31:28,177 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:31:28,178 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:31:28,191 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Ended with exit code 0 [2022-12-14 06:31:28,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:31:28,379 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2022-12-14 06:31:28,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:31:28,380 INFO L85 PathProgramCache]: Analyzing trace with hash 314900418, now seen corresponding path program 1 times [2022-12-14 06:31:28,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 06:31:28,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [895700927] [2022-12-14 06:31:28,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:31:28,381 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:31:28,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 06:31:28,383 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 06:31:28,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-12-14 06:31:29,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:31:29,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-14 06:31:29,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:31:29,138 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-14 06:31:29,158 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 06:31:29,262 INFO L321 Elim1Store]: treesize reduction 30, result has 28.6 percent of original size [2022-12-14 06:31:29,262 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 30 [2022-12-14 06:31:29,338 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 11 [2022-12-14 06:31:29,350 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-12-14 06:31:29,351 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 06:31:29,351 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 06:31:29,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [895700927] [2022-12-14 06:31:29,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [895700927] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:31:29,351 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:31:29,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 06:31:29,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172184524] [2022-12-14 06:31:29,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:31:29,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 06:31:29,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 06:31:29,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 06:31:29,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-12-14 06:31:29,352 INFO L87 Difference]: Start difference. First operand 308 states and 347 transitions. Second operand has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 06:31:30,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:31:30,562 INFO L93 Difference]: Finished difference Result 306 states and 344 transitions. [2022-12-14 06:31:30,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 06:31:30,562 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 64 [2022-12-14 06:31:30,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:31:30,563 INFO L225 Difference]: With dead ends: 306 [2022-12-14 06:31:30,563 INFO L226 Difference]: Without dead ends: 306 [2022-12-14 06:31:30,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-12-14 06:31:30,564 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 225 mSDsluCounter, 763 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 993 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:31:30,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 993 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-14 06:31:30,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2022-12-14 06:31:30,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 306. [2022-12-14 06:31:30,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 227 states have (on average 1.497797356828194) internal successors, (340), 302 states have internal predecessors, (340), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 06:31:30,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 344 transitions. [2022-12-14 06:31:30,570 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 344 transitions. Word has length 64 [2022-12-14 06:31:30,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:31:30,570 INFO L495 AbstractCegarLoop]: Abstraction has 306 states and 344 transitions. [2022-12-14 06:31:30,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 06:31:30,570 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 344 transitions. [2022-12-14 06:31:30,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-12-14 06:31:30,570 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:31:30,570 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:31:30,590 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Ended with exit code 0 [2022-12-14 06:31:30,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:31:30,771 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2022-12-14 06:31:30,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:31:30,772 INFO L85 PathProgramCache]: Analyzing trace with hash 314900419, now seen corresponding path program 1 times [2022-12-14 06:31:30,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 06:31:30,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [299717586] [2022-12-14 06:31:30,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:31:30,772 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:31:30,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 06:31:30,773 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 06:31:30,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-12-14 06:31:31,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:31:31,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-14 06:31:31,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:31:31,255 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-12-14 06:31:31,274 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 06:31:31,300 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 06:31:31,314 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 06:31:31,399 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2022-12-14 06:31:31,414 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-12-14 06:31:31,468 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 7 [2022-12-14 06:31:31,476 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 9 [2022-12-14 06:31:31,496 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-12-14 06:31:31,496 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 06:31:31,496 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 06:31:31,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [299717586] [2022-12-14 06:31:31,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [299717586] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:31:31,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:31:31,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 06:31:31,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034351448] [2022-12-14 06:31:31,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:31:31,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 06:31:31,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 06:31:31,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 06:31:31,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-12-14 06:31:31,497 INFO L87 Difference]: Start difference. First operand 306 states and 344 transitions. Second operand has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 7 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 06:31:33,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:31:33,188 INFO L93 Difference]: Finished difference Result 305 states and 342 transitions. [2022-12-14 06:31:33,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 06:31:33,189 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 7 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 64 [2022-12-14 06:31:33,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:31:33,191 INFO L225 Difference]: With dead ends: 305 [2022-12-14 06:31:33,191 INFO L226 Difference]: Without dead ends: 305 [2022-12-14 06:31:33,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2022-12-14 06:31:33,192 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 229 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 837 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-12-14 06:31:33,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 837 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-12-14 06:31:33,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2022-12-14 06:31:33,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 305. [2022-12-14 06:31:33,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 227 states have (on average 1.4889867841409692) internal successors, (338), 301 states have internal predecessors, (338), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 06:31:33,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 342 transitions. [2022-12-14 06:31:33,195 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 342 transitions. Word has length 64 [2022-12-14 06:31:33,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:31:33,195 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 342 transitions. [2022-12-14 06:31:33,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 7 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 06:31:33,196 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 342 transitions. [2022-12-14 06:31:33,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-12-14 06:31:33,196 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:31:33,196 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:31:33,209 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Ended with exit code 0 [2022-12-14 06:31:33,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:31:33,398 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2022-12-14 06:31:33,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:31:33,399 INFO L85 PathProgramCache]: Analyzing trace with hash 619530093, now seen corresponding path program 1 times [2022-12-14 06:31:33,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 06:31:33,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1753398576] [2022-12-14 06:31:33,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:31:33,402 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:31:33,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 06:31:33,405 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 06:31:33,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-12-14 06:31:33,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:31:33,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-14 06:31:33,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:31:33,921 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-12-14 06:31:33,969 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:31:33,969 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-12-14 06:31:34,010 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 06:31:34,102 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 36 [2022-12-14 06:31:34,240 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 06:31:34,240 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 46 [2022-12-14 06:31:34,282 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 15 [2022-12-14 06:31:34,369 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-12-14 06:31:34,369 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 06:31:34,369 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 06:31:34,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1753398576] [2022-12-14 06:31:34,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1753398576] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:31:34,369 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:31:34,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-14 06:31:34,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940988031] [2022-12-14 06:31:34,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:31:34,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-14 06:31:34,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 06:31:34,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-14 06:31:34,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-12-14 06:31:34,370 INFO L87 Difference]: Start difference. First operand 305 states and 342 transitions. Second operand has 9 states, 8 states have (on average 3.75) internal successors, (30), 9 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 06:31:36,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:31:36,388 INFO L93 Difference]: Finished difference Result 328 states and 366 transitions. [2022-12-14 06:31:36,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 06:31:36,388 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.75) internal successors, (30), 9 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 68 [2022-12-14 06:31:36,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:31:36,389 INFO L225 Difference]: With dead ends: 328 [2022-12-14 06:31:36,389 INFO L226 Difference]: Without dead ends: 328 [2022-12-14 06:31:36,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2022-12-14 06:31:36,390 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 268 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-12-14 06:31:36,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 637 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-12-14 06:31:36,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2022-12-14 06:31:36,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 314. [2022-12-14 06:31:36,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 236 states have (on average 1.4957627118644068) internal successors, (353), 310 states have internal predecessors, (353), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 06:31:36,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 357 transitions. [2022-12-14 06:31:36,397 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 357 transitions. Word has length 68 [2022-12-14 06:31:36,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:31:36,397 INFO L495 AbstractCegarLoop]: Abstraction has 314 states and 357 transitions. [2022-12-14 06:31:36,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.75) internal successors, (30), 9 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 06:31:36,397 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 357 transitions. [2022-12-14 06:31:36,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-12-14 06:31:36,397 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:31:36,397 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:31:36,417 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Ended with exit code 0 [2022-12-14 06:31:36,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:31:36,599 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2022-12-14 06:31:36,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:31:36,600 INFO L85 PathProgramCache]: Analyzing trace with hash 619530094, now seen corresponding path program 1 times [2022-12-14 06:31:36,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 06:31:36,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1199555639] [2022-12-14 06:31:36,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:31:36,603 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:31:36,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 06:31:36,604 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 06:31:36,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-12-14 06:31:37,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:31:37,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 26 conjunts are in the unsatisfiable core [2022-12-14 06:31:37,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:31:37,150 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-12-14 06:31:37,194 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-14 06:31:37,194 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-14 06:31:37,202 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 06:31:37,237 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 06:31:37,257 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 06:31:37,367 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 34 [2022-12-14 06:31:37,386 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-12-14 06:31:37,538 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 06:31:37,538 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 57 [2022-12-14 06:31:37,557 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2022-12-14 06:31:37,669 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 13 [2022-12-14 06:31:37,677 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 7 [2022-12-14 06:31:37,709 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-12-14 06:31:37,709 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 06:31:37,709 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 06:31:37,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1199555639] [2022-12-14 06:31:37,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1199555639] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:31:37,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:31:37,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-14 06:31:37,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380519874] [2022-12-14 06:31:37,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:31:37,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-14 06:31:37,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 06:31:37,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-14 06:31:37,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-12-14 06:31:37,710 INFO L87 Difference]: Start difference. First operand 314 states and 357 transitions. Second operand has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 06:31:40,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:31:40,107 INFO L93 Difference]: Finished difference Result 326 states and 361 transitions. [2022-12-14 06:31:40,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-14 06:31:40,108 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 68 [2022-12-14 06:31:40,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:31:40,109 INFO L225 Difference]: With dead ends: 326 [2022-12-14 06:31:40,109 INFO L226 Difference]: Without dead ends: 326 [2022-12-14 06:31:40,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2022-12-14 06:31:40,110 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 464 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:31:40,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [465 Valid, 662 Invalid, 625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 617 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-12-14 06:31:40,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2022-12-14 06:31:40,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 314. [2022-12-14 06:31:40,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 236 states have (on average 1.478813559322034) internal successors, (349), 310 states have internal predecessors, (349), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-14 06:31:40,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 353 transitions. [2022-12-14 06:31:40,113 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 353 transitions. Word has length 68 [2022-12-14 06:31:40,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:31:40,113 INFO L495 AbstractCegarLoop]: Abstraction has 314 states and 353 transitions. [2022-12-14 06:31:40,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-14 06:31:40,113 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 353 transitions. [2022-12-14 06:31:40,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-12-14 06:31:40,114 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:31:40,114 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:31:40,128 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Ended with exit code 0 [2022-12-14 06:31:40,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:31:40,315 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 91 more)] === [2022-12-14 06:31:40,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:31:40,317 INFO L85 PathProgramCache]: Analyzing trace with hash -867441310, now seen corresponding path program 1 times [2022-12-14 06:31:40,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 06:31:40,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [271661149] [2022-12-14 06:31:40,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:31:40,321 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:31:40,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 06:31:40,323 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 06:31:40,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-12-14 06:31:40,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:31:40,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-14 06:31:40,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:31:40,991 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-12-14 06:31:41,040 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:31:41,040 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-12-14 06:31:41,075 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 06:31:41,172 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 36 [2022-12-14 06:31:41,331 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 06:31:41,332 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 46 [2022-12-14 06:31:41,478 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 06:31:41,478 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 46 [2022-12-14 06:31:41,545 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 15 [2022-12-14 06:31:41,637 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2022-12-14 06:31:41,637 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:31:43,901 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1552 (Array (_ BitVec 64) (_ BitVec 64)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse0 (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse0) v_ArrVal_1552) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse0))) (_ bv1 1)))) is different from false [2022-12-14 06:31:43,938 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1552 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1551 (Array (_ BitVec 64) (_ BitVec 64)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem122#1.base| v_ArrVal_1551))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) v_ArrVal_1552)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2022-12-14 06:31:43,964 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1552 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1551 (Array (_ BitVec 64) (_ BitVec 64)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) v_ArrVal_1551))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) v_ArrVal_1552)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2022-12-14 06:31:44,004 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1550 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1552 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1551 (Array (_ BitVec 64) (_ BitVec 64)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base| v_ArrVal_1550))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) v_ArrVal_1551)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) v_ArrVal_1552)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2022-12-14 06:31:44,048 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 06:31:44,048 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 116 treesize of output 78 [2022-12-14 06:31:44,054 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7253 treesize of output 5732 [2022-12-14 06:31:44,103 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5728 treesize of output 4552 [2022-12-14 06:31:44,126 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4552 treesize of output 3628 [2022-12-14 06:31:44,151 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 3628 treesize of output 3572 [2022-12-14 06:32:03,406 INFO L321 Elim1Store]: treesize reduction 24, result has 22.6 percent of original size [2022-12-14 06:32:03,406 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 30 [2022-12-14 06:32:03,416 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 190 trivial. 2 not checked. [2022-12-14 06:32:03,416 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 06:32:03,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [271661149] [2022-12-14 06:32:03,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [271661149] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 06:32:03,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [752701660] [2022-12-14 06:32:03,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:32:03,417 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 06:32:03,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 06:32:03,417 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 06:32:03,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fa7fdae0-1ff6-46fe-ae17-5f9e1ec9b956/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2022-12-14 06:32:04,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:32:04,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-14 06:32:04,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:32:04,707 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-12-14 06:32:04,750 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-12-14 06:32:04,750 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-12-14 06:32:04,774 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-12-14 06:32:04,838 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 36 [2022-12-14 06:32:04,919 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 06:32:04,919 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 46 [2022-12-14 06:32:05,005 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 06:32:05,005 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 46 [2022-12-14 06:32:05,063 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 15 [2022-12-14 06:32:05,072 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2022-12-14 06:32:05,072 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:32:07,272 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1679 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1552 (Array (_ BitVec 64) (_ BitVec 64)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem122#1.base| v_ArrVal_1679))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) v_ArrVal_1552)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2022-12-14 06:32:07,296 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1679 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1552 (Array (_ BitVec 64) (_ BitVec 64)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) v_ArrVal_1679))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) v_ArrVal_1552)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2022-12-14 06:32:07,333 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1679 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1678 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_1552 (Array (_ BitVec 64) (_ BitVec 64)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~4#1|)) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~mem_track~0#1.base| v_ArrVal_1678))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) v_ArrVal_1679)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) v_ArrVal_1552)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2022-12-14 06:32:07,386 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 06:32:07,386 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 116 treesize of output 78 [2022-12-14 06:32:07,393 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9183 treesize of output 7356 [2022-12-14 06:32:07,547 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5592 treesize of output 5368 [2022-12-14 06:32:07,568 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5368 treesize of output 4717 [2022-12-14 06:32:07,587 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 4717 treesize of output 3765