./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 32bit --witnessprinter.graph.data.programhash 908fbcc4d3742ed9abcae99df082df11caf0d6bd4e74389f515555cf6e492354 --- 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 12:48:07,378 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 12:48:07,379 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 12:48:07,397 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 12:48:07,397 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 12:48:07,398 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 12:48:07,399 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 12:48:07,401 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 12:48:07,402 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 12:48:07,403 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 12:48:07,404 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 12:48:07,405 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 12:48:07,405 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 12:48:07,406 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 12:48:07,407 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 12:48:07,408 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 12:48:07,409 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 12:48:07,410 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 12:48:07,411 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 12:48:07,413 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 12:48:07,414 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 12:48:07,416 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 12:48:07,417 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 12:48:07,418 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 12:48:07,421 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 12:48:07,421 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 12:48:07,422 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 12:48:07,422 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 12:48:07,423 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 12:48:07,424 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 12:48:07,424 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 12:48:07,425 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 12:48:07,425 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 12:48:07,426 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 12:48:07,427 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 12:48:07,427 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 12:48:07,428 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 12:48:07,428 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 12:48:07,429 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 12:48:07,429 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 12:48:07,430 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 12:48:07,431 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-12-14 12:48:07,451 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 12:48:07,451 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 12:48:07,452 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 12:48:07,452 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 12:48:07,452 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 12:48:07,453 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 12:48:07,453 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 12:48:07,453 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 12:48:07,453 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 12:48:07,453 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 12:48:07,453 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 12:48:07,454 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 12:48:07,454 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 12:48:07,454 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 12:48:07,454 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 12:48:07,454 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 12:48:07,454 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 12:48:07,455 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 12:48:07,455 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-14 12:48:07,455 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-14 12:48:07,456 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 12:48:07,456 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 12:48:07,456 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 12:48:07,456 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 12:48:07,456 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 12:48:07,456 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 12:48:07,456 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-14 12:48:07,457 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-14 12:48:07,457 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-14 12:48:07,457 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 12:48:07,457 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 12:48:07,457 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 12:48:07,457 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 12:48:07,457 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 12:48:07,458 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 12:48:07,458 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 12:48:07,458 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 12:48:07,458 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 12:48:07,458 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 12:48:07,458 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 12:48:07,459 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 12:48:07,459 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 12:48:07,459 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_b20c6bff-183d-4187-b55d-8968e2a5efa2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 908fbcc4d3742ed9abcae99df082df11caf0d6bd4e74389f515555cf6e492354 [2022-12-14 12:48:07,640 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 12:48:07,657 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 12:48:07,659 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 12:48:07,660 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 12:48:07,660 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 12:48:07,661 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c [2022-12-14 12:48:10,227 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 12:48:10,394 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 12:48:10,394 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c [2022-12-14 12:48:10,399 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/data/67a4094ad/1cb790ddca4247b59548be745ba6328f/FLAG6360c7a7a [2022-12-14 12:48:10,793 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/data/67a4094ad/1cb790ddca4247b59548be745ba6328f [2022-12-14 12:48:10,795 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 12:48:10,796 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 12:48:10,797 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 12:48:10,798 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 12:48:10,801 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 12:48:10,801 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 12:48:10" (1/1) ... [2022-12-14 12:48:10,802 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fc01203 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:48:10, skipping insertion in model container [2022-12-14 12:48:10,803 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 12:48:10" (1/1) ... [2022-12-14 12:48:10,808 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 12:48:10,824 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 12:48:10,948 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_b20c6bff-183d-4187-b55d-8968e2a5efa2/sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c[3856,3869] [2022-12-14 12:48:10,958 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 12:48:10,968 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 12:48:10,969 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6a932e9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:48:10, skipping insertion in model container [2022-12-14 12:48:10,969 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 12:48:10,969 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-12-14 12:48:10,970 INFO L158 Benchmark]: Toolchain (without parser) took 173.15ms. Allocated memory is still 153.1MB. Free memory was 118.7MB in the beginning and 108.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 12:48:10,970 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 100.7MB. Free memory is still 52.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 12:48:10,971 INFO L158 Benchmark]: CACSL2BoogieTranslator took 171.50ms. Allocated memory is still 153.1MB. Free memory was 118.7MB in the beginning and 108.9MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-14 12:48:10,972 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 100.7MB. Free memory is still 52.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 171.50ms. Allocated memory is still 153.1MB. Free memory was 118.7MB in the beginning and 108.9MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 122]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 32bit --witnessprinter.graph.data.programhash 908fbcc4d3742ed9abcae99df082df11caf0d6bd4e74389f515555cf6e492354 --- 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 12:48:12,273 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 12:48:12,274 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 12:48:12,287 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 12:48:12,288 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 12:48:12,289 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 12:48:12,289 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 12:48:12,290 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 12:48:12,291 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 12:48:12,292 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 12:48:12,293 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 12:48:12,293 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 12:48:12,294 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 12:48:12,294 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 12:48:12,295 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 12:48:12,296 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 12:48:12,296 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 12:48:12,297 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 12:48:12,298 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 12:48:12,299 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 12:48:12,300 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 12:48:12,301 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 12:48:12,302 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 12:48:12,302 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 12:48:12,305 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 12:48:12,305 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 12:48:12,305 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 12:48:12,306 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 12:48:12,306 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 12:48:12,307 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 12:48:12,307 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 12:48:12,307 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 12:48:12,308 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 12:48:12,308 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 12:48:12,309 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 12:48:12,318 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 12:48:12,319 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 12:48:12,319 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 12:48:12,320 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 12:48:12,321 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 12:48:12,321 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 12:48:12,322 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2022-12-14 12:48:12,340 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 12:48:12,340 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 12:48:12,340 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 12:48:12,340 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 12:48:12,341 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 12:48:12,341 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 12:48:12,341 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 12:48:12,341 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 12:48:12,341 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 12:48:12,341 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 12:48:12,341 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 12:48:12,341 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 12:48:12,342 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-14 12:48:12,342 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-14 12:48:12,342 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 12:48:12,342 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 12:48:12,342 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 12:48:12,343 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 12:48:12,343 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 12:48:12,343 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 12:48:12,343 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-14 12:48:12,343 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-14 12:48:12,343 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-14 12:48:12,343 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 12:48:12,343 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 12:48:12,344 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 12:48:12,344 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 12:48:12,344 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 12:48:12,344 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 12:48:12,344 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 12:48:12,344 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 12:48:12,344 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 12:48:12,345 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 12:48:12,345 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 12:48:12,345 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 12:48:12,345 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 12:48:12,345 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 12:48:12,345 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 12:48:12,346 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 12:48:12,346 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_b20c6bff-183d-4187-b55d-8968e2a5efa2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 908fbcc4d3742ed9abcae99df082df11caf0d6bd4e74389f515555cf6e492354 [2022-12-14 12:48:12,575 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 12:48:12,590 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 12:48:12,592 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 12:48:12,593 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 12:48:12,593 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 12:48:12,595 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c [2022-12-14 12:48:15,183 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 12:48:15,338 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 12:48:15,339 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c [2022-12-14 12:48:15,345 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/data/11dbd0f27/8425130aa882410aa56e00820292c2cc/FLAG0a55b8756 [2022-12-14 12:48:15,357 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/data/11dbd0f27/8425130aa882410aa56e00820292c2cc [2022-12-14 12:48:15,359 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 12:48:15,360 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 12:48:15,361 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 12:48:15,361 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 12:48:15,364 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 12:48:15,365 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 12:48:15" (1/1) ... [2022-12-14 12:48:15,366 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5655ecc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:48:15, skipping insertion in model container [2022-12-14 12:48:15,366 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 12:48:15" (1/1) ... [2022-12-14 12:48:15,372 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 12:48:15,386 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 12:48:15,548 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_b20c6bff-183d-4187-b55d-8968e2a5efa2/sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c[3856,3869] [2022-12-14 12:48:15,561 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 12:48:15,574 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-12-14 12:48:15,579 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 12:48:15,598 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_b20c6bff-183d-4187-b55d-8968e2a5efa2/sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c[3856,3869] [2022-12-14 12:48:15,603 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 12:48:15,609 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 12:48:15,633 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_b20c6bff-183d-4187-b55d-8968e2a5efa2/sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c[3856,3869] [2022-12-14 12:48:15,637 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 12:48:15,652 INFO L208 MainTranslator]: Completed translation [2022-12-14 12:48:15,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:48:15 WrapperNode [2022-12-14 12:48:15,653 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 12:48:15,654 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 12:48:15,654 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 12:48:15,654 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 12:48:15,660 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:48:15" (1/1) ... [2022-12-14 12:48:15,672 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:48:15" (1/1) ... [2022-12-14 12:48:15,700 INFO L138 Inliner]: procedures = 27, calls = 34, calls flagged for inlining = 14, calls inlined = 16, statements flattened = 201 [2022-12-14 12:48:15,701 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 12:48:15,702 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 12:48:15,702 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 12:48:15,702 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 12:48:15,709 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:48:15" (1/1) ... [2022-12-14 12:48:15,709 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:48:15" (1/1) ... [2022-12-14 12:48:15,714 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:48:15" (1/1) ... [2022-12-14 12:48:15,714 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:48:15" (1/1) ... [2022-12-14 12:48:15,724 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:48:15" (1/1) ... [2022-12-14 12:48:15,729 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:48:15" (1/1) ... [2022-12-14 12:48:15,731 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:48:15" (1/1) ... [2022-12-14 12:48:15,732 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:48:15" (1/1) ... [2022-12-14 12:48:15,736 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 12:48:15,737 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 12:48:15,737 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 12:48:15,737 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 12:48:15,738 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:48:15" (1/1) ... [2022-12-14 12:48:15,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 12:48:15,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:48:15,764 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 12:48:15,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 12:48:15,799 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 12:48:15,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-14 12:48:15,800 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 12:48:15,800 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-12-14 12:48:15,800 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-14 12:48:15,800 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-14 12:48:15,800 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-14 12:48:15,800 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-14 12:48:15,800 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 12:48:15,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 12:48:15,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 12:48:15,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 12:48:15,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-12-14 12:48:15,802 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-14 12:48:15,893 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 12:48:15,894 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 12:48:16,309 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 12:48:16,317 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 12:48:16,318 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-14 12:48:16,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 12:48:16 BoogieIcfgContainer [2022-12-14 12:48:16,320 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 12:48:16,322 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 12:48:16,322 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 12:48:16,325 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 12:48:16,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 12:48:15" (1/3) ... [2022-12-14 12:48:16,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@749c0818 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 12:48:16, skipping insertion in model container [2022-12-14 12:48:16,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:48:15" (2/3) ... [2022-12-14 12:48:16,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@749c0818 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 12:48:16, skipping insertion in model container [2022-12-14 12:48:16,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 12:48:16" (3/3) ... [2022-12-14 12:48:16,327 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-symm.wvr.c [2022-12-14 12:48:16,341 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 12:48:16,341 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-12-14 12:48:16,341 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-14 12:48:16,429 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-14 12:48:16,458 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-14 12:48:16,470 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 266 places, 278 transitions, 572 flow [2022-12-14 12:48:16,472 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 266 places, 278 transitions, 572 flow [2022-12-14 12:48:16,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 266 places, 278 transitions, 572 flow [2022-12-14 12:48:16,559 INFO L130 PetriNetUnfolder]: 19/276 cut-off events. [2022-12-14 12:48:16,559 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-14 12:48:16,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 285 conditions, 276 events. 19/276 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 561 event pairs, 0 based on Foata normal form. 0/241 useless extension candidates. Maximal degree in co-relation 173. Up to 2 conditions per place. [2022-12-14 12:48:16,572 INFO L119 LiptonReduction]: Number of co-enabled transitions 13348 [2022-12-14 12:48:35,572 INFO L134 LiptonReduction]: Checked pairs total: 12486 [2022-12-14 12:48:35,573 INFO L136 LiptonReduction]: Total number of compositions: 326 [2022-12-14 12:48:35,578 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 35 transitions, 86 flow [2022-12-14 12:48:35,592 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 150 states, 106 states have (on average 3.452830188679245) internal successors, (366), 149 states have internal predecessors, (366), 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 12:48:35,605 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 12:48:35,609 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;@5f18d275, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 12:48:35,609 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-12-14 12:48:35,611 INFO L276 IsEmpty]: Start isEmpty. Operand has 150 states, 106 states have (on average 3.452830188679245) internal successors, (366), 149 states have internal predecessors, (366), 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 12:48:35,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-12-14 12:48:35,614 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:48:35,614 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-12-14 12:48:35,615 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-14 12:48:35,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:48:35,618 INFO L85 PathProgramCache]: Analyzing trace with hash 36227, now seen corresponding path program 1 times [2022-12-14 12:48:35,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 12:48:35,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1451975137] [2022-12-14 12:48:35,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:48:35,627 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 12:48:35,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 12:48:35,628 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 12:48:35,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 12:48:35,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:48:35,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 12:48:35,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:48:35,796 INFO L321 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2022-12-14 12:48:35,797 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 2 case distinctions, treesize of input 12 treesize of output 33 [2022-12-14 12:48:35,816 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 12:48:35,816 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 12:48:35,817 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 12:48:35,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1451975137] [2022-12-14 12:48:35,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1451975137] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:48:35,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:48:35,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 12:48:35,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071846289] [2022-12-14 12:48:35,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:48:35,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:48:35,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 12:48:35,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:48:35,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:48:35,847 INFO L87 Difference]: Start difference. First operand has 150 states, 106 states have (on average 3.452830188679245) internal successors, (366), 149 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 12:48:35,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:48:35,968 INFO L93 Difference]: Finished difference Result 148 states and 364 transitions. [2022-12-14 12:48:35,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:48:35,970 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2022-12-14 12:48:35,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:48:35,976 INFO L225 Difference]: With dead ends: 148 [2022-12-14 12:48:35,976 INFO L226 Difference]: Without dead ends: 148 [2022-12-14 12:48:35,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 12:48:35,979 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 29 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:48:35,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 0 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:48:35,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2022-12-14 12:48:36,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2022-12-14 12:48:36,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 106 states have (on average 3.4339622641509435) internal successors, (364), 147 states have internal predecessors, (364), 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 12:48:36,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 364 transitions. [2022-12-14 12:48:36,007 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 364 transitions. Word has length 2 [2022-12-14 12:48:36,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:48:36,008 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 364 transitions. [2022-12-14 12:48:36,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 12:48:36,008 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 364 transitions. [2022-12-14 12:48:36,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-12-14 12:48:36,008 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:48:36,008 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-12-14 12:48:36,016 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 12:48:36,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 12:48:36,211 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-14 12:48:36,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:48:36,213 INFO L85 PathProgramCache]: Analyzing trace with hash 36228, now seen corresponding path program 1 times [2022-12-14 12:48:36,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 12:48:36,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1948288649] [2022-12-14 12:48:36,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:48:36,217 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 12:48:36,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 12:48:36,221 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 12:48:36,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 12:48:36,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:48:36,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 12:48:36,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:48:36,374 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-12-14 12:48:36,374 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 2 case distinctions, treesize of input 12 treesize of output 27 [2022-12-14 12:48:36,391 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 12:48:36,391 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 12:48:36,391 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 12:48:36,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1948288649] [2022-12-14 12:48:36,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1948288649] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:48:36,392 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:48:36,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 12:48:36,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694050168] [2022-12-14 12:48:36,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:48:36,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:48:36,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 12:48:36,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:48:36,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:48:36,394 INFO L87 Difference]: Start difference. First operand 148 states and 364 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 12:48:36,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:48:36,626 INFO L93 Difference]: Finished difference Result 294 states and 726 transitions. [2022-12-14 12:48:36,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:48:36,627 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2022-12-14 12:48:36,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:48:36,629 INFO L225 Difference]: With dead ends: 294 [2022-12-14 12:48:36,629 INFO L226 Difference]: Without dead ends: 294 [2022-12-14 12:48:36,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 12:48:36,631 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 27 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 12:48:36,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 0 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 12:48:36,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2022-12-14 12:48:36,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 149. [2022-12-14 12:48:36,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 107 states have (on average 3.439252336448598) internal successors, (368), 148 states have internal predecessors, (368), 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 12:48:36,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 368 transitions. [2022-12-14 12:48:36,648 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 368 transitions. Word has length 2 [2022-12-14 12:48:36,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:48:36,648 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 368 transitions. [2022-12-14 12:48:36,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 12:48:36,648 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 368 transitions. [2022-12-14 12:48:36,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2022-12-14 12:48:36,649 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:48:36,649 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2022-12-14 12:48:36,656 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 12:48:36,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 12:48:36,849 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-14 12:48:36,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:48:36,850 INFO L85 PathProgramCache]: Analyzing trace with hash 36405, now seen corresponding path program 1 times [2022-12-14 12:48:36,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 12:48:36,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [100270782] [2022-12-14 12:48:36,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:48:36,850 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 12:48:36,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 12:48:36,892 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 12:48:36,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 12:48:36,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:48:36,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 12:48:36,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:48:36,944 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 12:48:36,944 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 12:48:36,944 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 12:48:36,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [100270782] [2022-12-14 12:48:36,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [100270782] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:48:36,944 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:48:36,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 12:48:36,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943230069] [2022-12-14 12:48:36,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:48:36,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:48:36,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 12:48:36,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:48:36,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:48:36,946 INFO L87 Difference]: Start difference. First operand 149 states and 368 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 12:48:37,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:48:37,102 INFO L93 Difference]: Finished difference Result 149 states and 365 transitions. [2022-12-14 12:48:37,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:48:37,102 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2022-12-14 12:48:37,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:48:37,103 INFO L225 Difference]: With dead ends: 149 [2022-12-14 12:48:37,103 INFO L226 Difference]: Without dead ends: 149 [2022-12-14 12:48:37,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 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 12:48:37,104 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 12:48:37,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 12:48:37,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2022-12-14 12:48:37,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2022-12-14 12:48:37,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 107 states have (on average 3.411214953271028) internal successors, (365), 148 states have internal predecessors, (365), 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 12:48:37,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 365 transitions. [2022-12-14 12:48:37,110 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 365 transitions. Word has length 2 [2022-12-14 12:48:37,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:48:37,110 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 365 transitions. [2022-12-14 12:48:37,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 12:48:37,111 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 365 transitions. [2022-12-14 12:48:37,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-14 12:48:37,111 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:48:37,111 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-14 12:48:37,121 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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)] Ended with exit code 0 [2022-12-14 12:48:37,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 12:48:37,313 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-14 12:48:37,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:48:37,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1127955, now seen corresponding path program 1 times [2022-12-14 12:48:37,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 12:48:37,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [200435490] [2022-12-14 12:48:37,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:48:37,316 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 12:48:37,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 12:48:37,320 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 12:48:37,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 12:48:37,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:48:37,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 12:48:37,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:48:37,472 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-12-14 12:48:37,472 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 2 case distinctions, treesize of input 12 treesize of output 27 [2022-12-14 12:48:37,501 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:48:37,501 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:48:37,602 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:48:37,602 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 12:48:37,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [200435490] [2022-12-14 12:48:37,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [200435490] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:48:37,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [365592227] [2022-12-14 12:48:37,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:48:37,603 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 12:48:37,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 12:48:37,604 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 12:48:37,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2022-12-14 12:48:37,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:48:37,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 12:48:37,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:48:37,764 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-12-14 12:48:37,764 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 2 case distinctions, treesize of input 12 treesize of output 27 [2022-12-14 12:48:37,780 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:48:37,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:48:37,816 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:48:37,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [365592227] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:48:37,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510818193] [2022-12-14 12:48:37,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:48:37,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:48:37,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:48:37,818 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:48:37,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 12:48:37,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:48:37,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 12:48:37,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:48:37,912 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-12-14 12:48:37,912 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 2 case distinctions, treesize of input 12 treesize of output 27 [2022-12-14 12:48:37,927 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:48:37,927 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:48:37,952 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:48:37,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1510818193] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:48:37,952 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 12:48:37,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2, 2, 2, 2] total 4 [2022-12-14 12:48:37,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728877823] [2022-12-14 12:48:37,953 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 12:48:37,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 12:48:37,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 12:48:37,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 12:48:37,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-14 12:48:37,954 INFO L87 Difference]: Start difference. First operand 149 states and 365 transitions. Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 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 12:48:38,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:48:38,712 INFO L93 Difference]: Finished difference Result 441 states and 1089 transitions. [2022-12-14 12:48:38,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 12:48:38,713 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 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 3 [2022-12-14 12:48:38,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:48:38,715 INFO L225 Difference]: With dead ends: 441 [2022-12-14 12:48:38,716 INFO L226 Difference]: Without dead ends: 441 [2022-12-14 12:48:38,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-14 12:48:38,717 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 54 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-14 12:48:38,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 0 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-14 12:48:38,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2022-12-14 12:48:38,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 151. [2022-12-14 12:48:38,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 109 states have (on average 3.4220183486238533) internal successors, (373), 150 states have internal predecessors, (373), 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 12:48:38,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 373 transitions. [2022-12-14 12:48:38,728 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 373 transitions. Word has length 3 [2022-12-14 12:48:38,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:48:38,729 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 373 transitions. [2022-12-14 12:48:38,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 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 12:48:38,729 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 373 transitions. [2022-12-14 12:48:38,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-14 12:48:38,729 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:48:38,729 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-14 12:48:38,731 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (6)] Ended with exit code 0 [2022-12-14 12:48:38,945 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-14 12:48:39,172 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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)] Ended with exit code 0 [2022-12-14 12:48:39,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 12:48:39,332 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-14 12:48:39,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:48:39,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1128132, now seen corresponding path program 1 times [2022-12-14 12:48:39,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 12:48:39,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1048565771] [2022-12-14 12:48:39,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:48:39,335 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 12:48:39,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 12:48:39,337 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 12:48:39,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 12:48:39,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:48:39,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 12:48:39,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:48:39,400 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:48:39,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:48:39,432 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:48:39,433 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 12:48:39,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1048565771] [2022-12-14 12:48:39,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1048565771] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:48:39,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [500646959] [2022-12-14 12:48:39,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:48:39,433 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 12:48:39,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 12:48:39,434 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 12:48:39,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2022-12-14 12:48:39,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:48:39,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 12:48:39,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:48:39,533 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:48:39,533 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:48:39,538 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:48:39,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [500646959] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:48:39,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1481009002] [2022-12-14 12:48:39,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:48:39,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:48:39,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:48:39,539 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:48:39,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-14 12:48:39,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:48:39,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 12:48:39,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:48:39,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:48:39,592 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:48:39,597 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:48:39,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1481009002] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:48:39,597 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 12:48:39,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2, 2, 2, 2] total 4 [2022-12-14 12:48:39,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501377845] [2022-12-14 12:48:39,597 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 12:48:39,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 12:48:39,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 12:48:39,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 12:48:39,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-14 12:48:39,598 INFO L87 Difference]: Start difference. First operand 151 states and 373 transitions. Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 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 12:48:39,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:48:39,826 INFO L93 Difference]: Finished difference Result 151 states and 367 transitions. [2022-12-14 12:48:39,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 12:48:39,827 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 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 3 [2022-12-14 12:48:39,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:48:39,828 INFO L225 Difference]: With dead ends: 151 [2022-12-14 12:48:39,828 INFO L226 Difference]: Without dead ends: 151 [2022-12-14 12:48:39,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-14 12:48:39,829 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 12:48:39,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 12:48:39,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2022-12-14 12:48:39,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2022-12-14 12:48:39,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 109 states have (on average 3.36697247706422) internal successors, (367), 150 states have internal predecessors, (367), 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 12:48:39,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 367 transitions. [2022-12-14 12:48:39,836 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 367 transitions. Word has length 3 [2022-12-14 12:48:39,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:48:39,837 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 367 transitions. [2022-12-14 12:48:39,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 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 12:48:39,837 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 367 transitions. [2022-12-14 12:48:39,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 12:48:39,837 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:48:39,837 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1] [2022-12-14 12:48:39,845 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 12:48:40,044 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (9)] Ended with exit code 0 [2022-12-14 12:48:40,246 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-14 12:48:40,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:48:40,441 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-14 12:48:40,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:48:40,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1084121139, now seen corresponding path program 2 times [2022-12-14 12:48:40,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 12:48:40,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2098421247] [2022-12-14 12:48:40,443 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 12:48:40,444 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 12:48:40,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 12:48:40,445 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 12:48:40,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 12:48:40,502 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 12:48:40,502 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 12:48:40,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 12:48:40,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:48:40,550 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:48:40,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:48:40,652 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:48:40,652 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 12:48:40,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2098421247] [2022-12-14 12:48:40,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2098421247] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:48:40,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1286469341] [2022-12-14 12:48:40,653 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 12:48:40,653 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 12:48:40,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 12:48:40,654 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 12:48:40,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2022-12-14 12:48:40,785 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 12:48:40,785 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 12:48:40,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 12:48:40,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:48:40,804 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:48:40,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:48:40,816 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:48:40,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1286469341] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:48:40,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598568575] [2022-12-14 12:48:40,817 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 12:48:40,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:48:40,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:48:40,818 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:48:40,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-14 12:48:40,896 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 12:48:40,896 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 12:48:40,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-14 12:48:40,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:48:40,950 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2022-12-14 12:48:40,950 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 2 case distinctions, treesize of input 14 treesize of output 29 [2022-12-14 12:48:41,033 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:48:41,034 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:48:41,500 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 12:48:41,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598568575] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:48:41,500 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 12:48:41,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 16 [2022-12-14 12:48:41,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385461147] [2022-12-14 12:48:41,501 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 12:48:41,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-14 12:48:41,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 12:48:41,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-14 12:48:41,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2022-12-14 12:48:41,501 INFO L87 Difference]: Start difference. First operand 151 states and 367 transitions. Second operand has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 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 12:48:41,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:48:41,719 INFO L93 Difference]: Finished difference Result 150 states and 365 transitions. [2022-12-14 12:48:41,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 12:48:41,719 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 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 5 [2022-12-14 12:48:41,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:48:41,720 INFO L225 Difference]: With dead ends: 150 [2022-12-14 12:48:41,720 INFO L226 Difference]: Without dead ends: 150 [2022-12-14 12:48:41,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2022-12-14 12:48:41,721 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 81 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 12:48:41,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 0 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 12:48:41,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-12-14 12:48:41,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2022-12-14 12:48:41,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 109 states have (on average 3.3486238532110093) internal successors, (365), 149 states have internal predecessors, (365), 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 12:48:41,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 365 transitions. [2022-12-14 12:48:41,725 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 365 transitions. Word has length 5 [2022-12-14 12:48:41,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:48:41,725 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 365 transitions. [2022-12-14 12:48:41,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 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 12:48:41,725 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 365 transitions. [2022-12-14 12:48:41,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 12:48:41,725 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:48:41,725 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1] [2022-12-14 12:48:41,730 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-14 12:48:41,954 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 12:48:42,132 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (12)] Ended with exit code 0 [2022-12-14 12:48:42,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt [2022-12-14 12:48:42,327 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-14 12:48:42,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:48:42,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1084121316, now seen corresponding path program 2 times [2022-12-14 12:48:42,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 12:48:42,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1654956590] [2022-12-14 12:48:42,329 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 12:48:42,330 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 12:48:42,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 12:48:42,333 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 12:48:42,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 (14)] Waiting until timeout for monitored process [2022-12-14 12:48:42,377 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-14 12:48:42,377 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 12:48:42,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-14 12:48:42,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:48:42,412 INFO L321 Elim1Store]: treesize reduction 50, result has 23.1 percent of original size [2022-12-14 12:48:42,412 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 3 case distinctions, treesize of input 22 treesize of output 29 [2022-12-14 12:48:42,473 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 12:48:42,473 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 12:48:42,473 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 12:48:42,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1654956590] [2022-12-14 12:48:42,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1654956590] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:48:42,473 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:48:42,473 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 12:48:42,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672663706] [2022-12-14 12:48:42,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:48:42,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:48:42,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 12:48:42,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:48:42,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:48:42,474 INFO L87 Difference]: Start difference. First operand 150 states and 365 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 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 12:48:42,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:48:42,604 INFO L93 Difference]: Finished difference Result 124 states and 289 transitions. [2022-12-14 12:48:42,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:48:42,605 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 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 5 [2022-12-14 12:48:42,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:48:42,606 INFO L225 Difference]: With dead ends: 124 [2022-12-14 12:48:42,606 INFO L226 Difference]: Without dead ends: 124 [2022-12-14 12:48:42,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 12:48:42,607 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 25 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:48:42,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 0 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:48:42,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-12-14 12:48:42,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2022-12-14 12:48:42,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 93 states have (on average 3.10752688172043) internal successors, (289), 123 states have internal predecessors, (289), 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 12:48:42,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 289 transitions. [2022-12-14 12:48:42,612 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 289 transitions. Word has length 5 [2022-12-14 12:48:42,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:48:42,612 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 289 transitions. [2022-12-14 12:48:42,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 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 12:48:42,612 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 289 transitions. [2022-12-14 12:48:42,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-12-14 12:48:42,612 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:48:42,613 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1] [2022-12-14 12:48:42,634 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 (14)] Ended with exit code 0 [2022-12-14 12:48:42,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 12:48:42,814 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-14 12:48:42,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:48:42,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1084121318, now seen corresponding path program 1 times [2022-12-14 12:48:42,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 12:48:42,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [877943301] [2022-12-14 12:48:42,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:48:42,817 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 12:48:42,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 12:48:42,820 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 12:48:42,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 12:48:42,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:48:42,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-14 12:48:42,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:48:42,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:48:42,998 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-12-14 12:48:42,998 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 12 treesize of output 24 [2022-12-14 12:48:43,003 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 12:48:43,071 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 12:48:43,071 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 12:48:43,071 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 12:48:43,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [877943301] [2022-12-14 12:48:43,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [877943301] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:48:43,071 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:48:43,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 12:48:43,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408403817] [2022-12-14 12:48:43,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:48:43,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:48:43,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 12:48:43,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:48:43,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:48:43,072 INFO L87 Difference]: Start difference. First operand 124 states and 289 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 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 12:48:43,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:48:43,195 INFO L93 Difference]: Finished difference Result 98 states and 213 transitions. [2022-12-14 12:48:43,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:48:43,195 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 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 5 [2022-12-14 12:48:43,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:48:43,196 INFO L225 Difference]: With dead ends: 98 [2022-12-14 12:48:43,196 INFO L226 Difference]: Without dead ends: 98 [2022-12-14 12:48:43,196 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 12:48:43,196 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 23 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:48:43,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 0 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:48:43,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-12-14 12:48:43,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2022-12-14 12:48:43,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 77 states have (on average 2.7662337662337664) internal successors, (213), 97 states have internal predecessors, (213), 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 12:48:43,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 213 transitions. [2022-12-14 12:48:43,199 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 213 transitions. Word has length 5 [2022-12-14 12:48:43,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:48:43,199 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 213 transitions. [2022-12-14 12:48:43,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 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 12:48:43,200 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 213 transitions. [2022-12-14 12:48:43,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 12:48:43,200 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:48:43,200 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1] [2022-12-14 12:48:43,207 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 12:48:43,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 12:48:43,401 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-14 12:48:43,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:48:43,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1836442069, now seen corresponding path program 1 times [2022-12-14 12:48:43,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 12:48:43,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1591691624] [2022-12-14 12:48:43,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:48:43,404 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 12:48:43,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 12:48:43,407 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 12:48:43,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 12:48:43,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:48:43,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 12:48:43,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:48:43,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:48:43,551 INFO L321 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2022-12-14 12:48:43,551 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 1 case distinctions, treesize of input 12 treesize of output 23 [2022-12-14 12:48:43,560 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 42 treesize of output 38 [2022-12-14 12:48:43,591 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 12:48:43,591 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 12:48:43,591 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 12:48:43,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1591691624] [2022-12-14 12:48:43,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1591691624] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:48:43,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:48:43,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 12:48:43,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576253698] [2022-12-14 12:48:43,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:48:43,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:48:43,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 12:48:43,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:48:43,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:48:43,592 INFO L87 Difference]: Start difference. First operand 98 states and 213 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 12:48:43,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:48:43,671 INFO L93 Difference]: Finished difference Result 88 states and 193 transitions. [2022-12-14 12:48:43,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:48:43,672 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 7 [2022-12-14 12:48:43,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:48:43,672 INFO L225 Difference]: With dead ends: 88 [2022-12-14 12:48:43,672 INFO L226 Difference]: Without dead ends: 88 [2022-12-14 12:48:43,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 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 12:48:43,673 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 19 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:48:43,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 0 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:48:43,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-12-14 12:48:43,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2022-12-14 12:48:43,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 73 states have (on average 2.643835616438356) internal successors, (193), 87 states have internal predecessors, (193), 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 12:48:43,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 193 transitions. [2022-12-14 12:48:43,676 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 193 transitions. Word has length 7 [2022-12-14 12:48:43,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:48:43,676 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 193 transitions. [2022-12-14 12:48:43,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 12:48:43,676 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 193 transitions. [2022-12-14 12:48:43,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 12:48:43,676 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:48:43,676 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1] [2022-12-14 12:48:43,686 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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)] Ended with exit code 0 [2022-12-14 12:48:43,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 12:48:43,878 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-14 12:48:43,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:48:43,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1836442068, now seen corresponding path program 1 times [2022-12-14 12:48:43,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 12:48:43,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1232887438] [2022-12-14 12:48:43,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:48:43,880 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 12:48:43,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 12:48:43,883 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 12:48:43,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 12:48:44,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:48:44,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 12:48:44,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:48:44,095 INFO L321 Elim1Store]: treesize reduction 43, result has 33.8 percent of original size [2022-12-14 12:48:44,096 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 2 case distinctions, treesize of input 12 treesize of output 29 [2022-12-14 12:48:44,112 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 12:48:44,112 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 12:48:44,112 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 12:48:44,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1232887438] [2022-12-14 12:48:44,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1232887438] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:48:44,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:48:44,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-14 12:48:44,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474399530] [2022-12-14 12:48:44,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:48:44,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:48:44,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 12:48:44,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:48:44,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:48:44,114 INFO L87 Difference]: Start difference. First operand 88 states and 193 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 12:48:44,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:48:44,187 INFO L93 Difference]: Finished difference Result 78 states and 173 transitions. [2022-12-14 12:48:44,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:48:44,187 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 7 [2022-12-14 12:48:44,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:48:44,187 INFO L225 Difference]: With dead ends: 78 [2022-12-14 12:48:44,187 INFO L226 Difference]: Without dead ends: 78 [2022-12-14 12:48:44,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 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 12:48:44,188 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 17 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:48:44,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 0 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:48:44,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-12-14 12:48:44,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2022-12-14 12:48:44,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 69 states have (on average 2.5072463768115942) internal successors, (173), 77 states have internal predecessors, (173), 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 12:48:44,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 173 transitions. [2022-12-14 12:48:44,191 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 173 transitions. Word has length 7 [2022-12-14 12:48:44,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:48:44,191 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 173 transitions. [2022-12-14 12:48:44,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 12:48:44,191 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 173 transitions. [2022-12-14 12:48:44,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 12:48:44,191 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:48:44,191 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1] [2022-12-14 12:48:44,199 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 12:48:44,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 12:48:44,392 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-14 12:48:44,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:48:44,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1095127955, now seen corresponding path program 1 times [2022-12-14 12:48:44,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 12:48:44,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [466208900] [2022-12-14 12:48:44,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:48:44,395 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 12:48:44,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 12:48:44,398 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 12:48:44,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 12:48:44,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:48:44,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 12:48:44,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:48:44,497 INFO L321 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2022-12-14 12:48:44,497 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 2 case distinctions, treesize of input 12 treesize of output 33 [2022-12-14 12:48:44,514 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 12:48:44,514 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 12:48:44,514 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 12:48:44,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [466208900] [2022-12-14 12:48:44,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [466208900] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:48:44,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:48:44,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 12:48:44,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084619993] [2022-12-14 12:48:44,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:48:44,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 12:48:44,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 12:48:44,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 12:48:44,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 12:48:44,515 INFO L87 Difference]: Start difference. First operand 78 states and 173 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:48:44,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:48:44,596 INFO L93 Difference]: Finished difference Result 56 states and 120 transitions. [2022-12-14 12:48:44,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 12:48:44,597 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-12-14 12:48:44,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:48:44,597 INFO L225 Difference]: With dead ends: 56 [2022-12-14 12:48:44,597 INFO L226 Difference]: Without dead ends: 56 [2022-12-14 12:48:44,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 12:48:44,597 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 31 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:48:44,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 0 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:48:44,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-12-14 12:48:44,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2022-12-14 12:48:44,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 52 states have (on average 2.3076923076923075) internal successors, (120), 55 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:48:44,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 120 transitions. [2022-12-14 12:48:44,599 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 120 transitions. Word has length 8 [2022-12-14 12:48:44,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:48:44,599 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 120 transitions. [2022-12-14 12:48:44,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:48:44,599 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 120 transitions. [2022-12-14 12:48:44,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 12:48:44,600 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:48:44,600 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1] [2022-12-14 12:48:44,607 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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)] Forceful destruction successful, exit code 0 [2022-12-14 12:48:44,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 12:48:44,801 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-14 12:48:44,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:48:44,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1095127954, now seen corresponding path program 1 times [2022-12-14 12:48:44,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 12:48:44,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1545098131] [2022-12-14 12:48:44,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:48:44,804 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 12:48:44,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 12:48:44,807 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 12:48:44,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 12:48:45,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:48:45,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-14 12:48:45,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:48:45,093 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-12-14 12:48:45,093 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 2 case distinctions, treesize of input 12 treesize of output 27 [2022-12-14 12:48:45,131 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 12:48:45,132 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 12:48:45,132 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 12:48:45,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1545098131] [2022-12-14 12:48:45,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1545098131] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:48:45,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:48:45,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 12:48:45,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618589847] [2022-12-14 12:48:45,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:48:45,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 12:48:45,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 12:48:45,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 12:48:45,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 12:48:45,133 INFO L87 Difference]: Start difference. First operand 56 states and 120 transitions. Second operand has 5 states, 4 states have (on average 1.5) 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 12:48:45,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:48:45,285 INFO L93 Difference]: Finished difference Result 86 states and 186 transitions. [2022-12-14 12:48:45,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 12:48:45,285 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) 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 8 [2022-12-14 12:48:45,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:48:45,286 INFO L225 Difference]: With dead ends: 86 [2022-12-14 12:48:45,286 INFO L226 Difference]: Without dead ends: 86 [2022-12-14 12:48:45,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-12-14 12:48:45,286 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 50 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:48:45,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 0 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:48:45,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-12-14 12:48:45,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 66. [2022-12-14 12:48:45,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 62 states have (on average 2.4838709677419355) internal successors, (154), 65 states have internal predecessors, (154), 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 12:48:45,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 154 transitions. [2022-12-14 12:48:45,288 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 154 transitions. Word has length 8 [2022-12-14 12:48:45,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:48:45,288 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 154 transitions. [2022-12-14 12:48:45,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) 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 12:48:45,289 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 154 transitions. [2022-12-14 12:48:45,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-14 12:48:45,289 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:48:45,289 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2022-12-14 12:48:45,297 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 12:48:45,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 12:48:45,490 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-14 12:48:45,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:48:45,492 INFO L85 PathProgramCache]: Analyzing trace with hash 410772914, now seen corresponding path program 1 times [2022-12-14 12:48:45,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 12:48:45,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [138653479] [2022-12-14 12:48:45,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:48:45,494 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 12:48:45,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 12:48:45,497 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 12:48:45,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 12:48:45,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:48:45,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-14 12:48:45,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:48:45,633 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-12-14 12:48:45,633 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 2 case distinctions, treesize of input 12 treesize of output 27 [2022-12-14 12:48:45,710 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 12:48:45,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:48:45,967 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 12:48:45,968 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 12:48:45,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [138653479] [2022-12-14 12:48:45,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [138653479] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:48:45,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [16967725] [2022-12-14 12:48:45,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:48:45,968 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 12:48:45,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 12:48:45,969 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 12:48:45,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2022-12-14 12:48:46,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:48:46,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-14 12:48:46,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:48:46,157 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-12-14 12:48:46,157 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 2 case distinctions, treesize of input 12 treesize of output 27 [2022-12-14 12:48:46,195 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 12:48:46,195 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:48:46,262 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 12:48:46,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [16967725] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:48:46,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465459305] [2022-12-14 12:48:46,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:48:46,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:48:46,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:48:46,264 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:48:46,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-12-14 12:48:46,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:48:46,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-14 12:48:46,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:48:46,382 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-12-14 12:48:46,382 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 2 case distinctions, treesize of input 12 treesize of output 27 [2022-12-14 12:48:46,414 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 12:48:46,414 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:48:46,473 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 12:48:46,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [465459305] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:48:46,473 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 12:48:46,473 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 8 [2022-12-14 12:48:46,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030697429] [2022-12-14 12:48:46,473 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 12:48:46,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-14 12:48:46,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 12:48:46,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-14 12:48:46,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-12-14 12:48:46,474 INFO L87 Difference]: Start difference. First operand 66 states and 154 transitions. Second operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:48:46,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:48:46,942 INFO L93 Difference]: Finished difference Result 146 states and 318 transitions. [2022-12-14 12:48:46,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 12:48:46,943 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-12-14 12:48:46,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:48:46,944 INFO L225 Difference]: With dead ends: 146 [2022-12-14 12:48:46,944 INFO L226 Difference]: Without dead ends: 146 [2022-12-14 12:48:46,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-12-14 12:48:46,944 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 147 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 12:48:46,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 0 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 12:48:46,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2022-12-14 12:48:46,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 86. [2022-12-14 12:48:46,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 82 states have (on average 2.707317073170732) internal successors, (222), 85 states have internal predecessors, (222), 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 12:48:46,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 222 transitions. [2022-12-14 12:48:46,947 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 222 transitions. Word has length 9 [2022-12-14 12:48:46,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:48:46,947 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 222 transitions. [2022-12-14 12:48:46,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:48:46,948 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 222 transitions. [2022-12-14 12:48:46,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-14 12:48:46,948 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:48:46,948 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:48:46,955 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 12:48:47,156 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (21)] Ended with exit code 0 [2022-12-14 12:48:47,357 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-12-14 12:48:47,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:48:47,550 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-14 12:48:47,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:48:47,551 INFO L85 PathProgramCache]: Analyzing trace with hash -151421704, now seen corresponding path program 1 times [2022-12-14 12:48:47,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 12:48:47,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [340165033] [2022-12-14 12:48:47,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:48:47,553 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 12:48:47,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 12:48:47,555 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 12:48:47,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 12:48:47,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:48:47,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-14 12:48:47,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:48:47,677 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-12-14 12:48:47,677 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 2 case distinctions, treesize of input 12 treesize of output 27 [2022-12-14 12:48:47,715 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 12:48:47,715 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 12:48:47,716 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 12:48:47,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [340165033] [2022-12-14 12:48:47,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [340165033] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:48:47,716 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:48:47,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 12:48:47,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327597291] [2022-12-14 12:48:47,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:48:47,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 12:48:47,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 12:48:47,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 12:48:47,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 12:48:47,717 INFO L87 Difference]: Start difference. First operand 86 states and 222 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:48:47,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:48:47,849 INFO L93 Difference]: Finished difference Result 120 states and 314 transitions. [2022-12-14 12:48:47,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 12:48:47,849 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-12-14 12:48:47,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:48:47,850 INFO L225 Difference]: With dead ends: 120 [2022-12-14 12:48:47,850 INFO L226 Difference]: Without dead ends: 120 [2022-12-14 12:48:47,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-12-14 12:48:47,851 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 44 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:48:47,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 0 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:48:47,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-12-14 12:48:47,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 102. [2022-12-14 12:48:47,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 98 states have (on average 2.8877551020408165) internal successors, (283), 101 states have internal predecessors, (283), 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 12:48:47,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 283 transitions. [2022-12-14 12:48:47,853 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 283 transitions. Word has length 10 [2022-12-14 12:48:47,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:48:47,853 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 283 transitions. [2022-12-14 12:48:47,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 12:48:47,853 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 283 transitions. [2022-12-14 12:48:47,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 12:48:47,854 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:48:47,854 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:48:47,865 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 12:48:48,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 12:48:48,055 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-14 12:48:48,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:48:48,056 INFO L85 PathProgramCache]: Analyzing trace with hash -399103287, now seen corresponding path program 1 times [2022-12-14 12:48:48,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 12:48:48,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1531318283] [2022-12-14 12:48:48,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:48:48,058 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 12:48:48,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 12:48:48,061 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 12:48:48,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 12:48:48,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:48:48,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-14 12:48:48,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:48:48,239 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-12-14 12:48:48,239 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 2 case distinctions, treesize of input 12 treesize of output 27 [2022-12-14 12:48:48,314 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 12:48:48,314 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:48:48,566 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 12:48:48,566 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 12:48:48,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1531318283] [2022-12-14 12:48:48,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1531318283] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:48:48,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1765361839] [2022-12-14 12:48:48,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:48:48,566 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 12:48:48,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 12:48:48,567 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 12:48:48,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2022-12-14 12:48:48,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:48:48,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-14 12:48:48,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:48:48,754 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-12-14 12:48:48,754 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 2 case distinctions, treesize of input 12 treesize of output 27 [2022-12-14 12:48:48,800 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 12:48:48,800 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:48:48,882 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 12:48:48,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1765361839] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:48:48,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502814525] [2022-12-14 12:48:48,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:48:48,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:48:48,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:48:48,883 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:48:48,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-12-14 12:48:48,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:48:48,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-14 12:48:48,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:48:49,018 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-12-14 12:48:49,018 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 2 case distinctions, treesize of input 12 treesize of output 27 [2022-12-14 12:48:49,048 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 12:48:49,048 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:48:49,116 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 12:48:49,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1502814525] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:48:49,116 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 12:48:49,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 8 [2022-12-14 12:48:49,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414503331] [2022-12-14 12:48:49,116 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 12:48:49,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-14 12:48:49,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 12:48:49,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-14 12:48:49,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-12-14 12:48:49,117 INFO L87 Difference]: Start difference. First operand 102 states and 283 transitions. Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 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 12:48:49,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:48:49,521 INFO L93 Difference]: Finished difference Result 188 states and 498 transitions. [2022-12-14 12:48:49,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 12:48:49,521 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-12-14 12:48:49,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:48:49,523 INFO L225 Difference]: With dead ends: 188 [2022-12-14 12:48:49,523 INFO L226 Difference]: Without dead ends: 188 [2022-12-14 12:48:49,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-12-14 12:48:49,524 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 86 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 12:48:49,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 0 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 12:48:49,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-12-14 12:48:49,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 134. [2022-12-14 12:48:49,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 130 states have (on average 3.1153846153846154) internal successors, (405), 133 states have internal predecessors, (405), 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 12:48:49,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 405 transitions. [2022-12-14 12:48:49,530 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 405 transitions. Word has length 11 [2022-12-14 12:48:49,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:48:49,531 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 405 transitions. [2022-12-14 12:48:49,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 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 12:48:49,531 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 405 transitions. [2022-12-14 12:48:49,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 12:48:49,531 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:48:49,532 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1] [2022-12-14 12:48:49,542 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 12:48:49,740 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (25)] Ended with exit code 0 [2022-12-14 12:48:49,942 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-12-14 12:48:50,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:48:50,134 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-14 12:48:50,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:48:50,135 INFO L85 PathProgramCache]: Analyzing trace with hash -384185038, now seen corresponding path program 2 times [2022-12-14 12:48:50,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 12:48:50,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [936338695] [2022-12-14 12:48:50,137 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 12:48:50,137 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 12:48:50,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 12:48:50,139 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 12:48:50,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 (27)] Waiting until timeout for monitored process [2022-12-14 12:48:50,292 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 12:48:50,292 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 12:48:50,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-14 12:48:50,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:48:50,346 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-12-14 12:48:50,346 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 2 case distinctions, treesize of input 12 treesize of output 27 [2022-12-14 12:48:50,446 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 12:48:50,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:48:50,768 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 12:48:50,768 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 12:48:50,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [936338695] [2022-12-14 12:48:50,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [936338695] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:48:50,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [853669070] [2022-12-14 12:48:50,769 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 12:48:50,769 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 12:48:50,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 12:48:50,770 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 12:48:50,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2022-12-14 12:48:50,972 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 12:48:50,972 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 12:48:50,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 12:48:50,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:48:51,035 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 12:48:51,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:48:51,132 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 12:48:51,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [853669070] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:48:51,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242452554] [2022-12-14 12:48:51,133 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 12:48:51,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:48:51,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:48:51,134 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:48:51,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-12-14 12:48:51,256 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 12:48:51,256 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 12:48:51,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 12:48:51,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:48:51,268 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 12:48:51,268 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:48:51,281 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 12:48:51,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1242452554] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:48:51,281 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 12:48:51,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5, 5] total 19 [2022-12-14 12:48:51,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293449834] [2022-12-14 12:48:51,281 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 12:48:51,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-14 12:48:51,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 12:48:51,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-14 12:48:51,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2022-12-14 12:48:51,283 INFO L87 Difference]: Start difference. First operand 134 states and 405 transitions. Second operand has 20 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 20 states have internal predecessors, (28), 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 12:48:52,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:48:52,007 INFO L93 Difference]: Finished difference Result 214 states and 539 transitions. [2022-12-14 12:48:52,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 12:48:52,008 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 20 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-12-14 12:48:52,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:48:52,008 INFO L225 Difference]: With dead ends: 214 [2022-12-14 12:48:52,008 INFO L226 Difference]: Without dead ends: 214 [2022-12-14 12:48:52,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2022-12-14 12:48:52,009 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 211 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-14 12:48:52,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 0 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 378 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-14 12:48:52,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2022-12-14 12:48:52,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 118. [2022-12-14 12:48:52,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 116 states have (on average 2.9655172413793105) internal successors, (344), 117 states have internal predecessors, (344), 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 12:48:52,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 344 transitions. [2022-12-14 12:48:52,015 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 344 transitions. Word has length 11 [2022-12-14 12:48:52,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:48:52,016 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 344 transitions. [2022-12-14 12:48:52,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 20 states have internal predecessors, (28), 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 12:48:52,016 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 344 transitions. [2022-12-14 12:48:52,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-14 12:48:52,016 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:48:52,017 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:48:52,025 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 (27)] Ended with exit code 0 [2022-12-14 12:48:52,227 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2022-12-14 12:48:52,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (28)] Forceful destruction successful, exit code 0 [2022-12-14 12:48:52,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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=3,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt [2022-12-14 12:48:52,619 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-14 12:48:52,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:48:52,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1286097751, now seen corresponding path program 2 times [2022-12-14 12:48:52,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 12:48:52,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1663322244] [2022-12-14 12:48:52,622 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 12:48:52,622 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 12:48:52,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 12:48:52,624 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 12:48:52,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 (30)] Waiting until timeout for monitored process [2022-12-14 12:48:52,759 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 12:48:52,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 12:48:52,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-14 12:48:52,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:48:52,801 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-12-14 12:48:52,801 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 2 case distinctions, treesize of input 12 treesize of output 27 [2022-12-14 12:48:52,883 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 12:48:52,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:48:53,198 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 12:48:53,198 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 12:48:53,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1663322244] [2022-12-14 12:48:53,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1663322244] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:48:53,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [555311410] [2022-12-14 12:48:53,198 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 12:48:53,199 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 12:48:53,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 12:48:53,199 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 12:48:53,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (31)] Waiting until timeout for monitored process [2022-12-14 12:48:53,432 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 12:48:53,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 12:48:53,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 12:48:53,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:48:53,475 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 12:48:53,475 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:48:53,573 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 12:48:53,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [555311410] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:48:53,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077521323] [2022-12-14 12:48:53,573 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 12:48:53,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:48:53,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:48:53,574 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:48:53,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-12-14 12:48:53,703 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 12:48:53,703 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 12:48:53,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-14 12:48:53,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:48:53,743 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-12-14 12:48:53,743 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 2 case distinctions, treesize of input 12 treesize of output 27 [2022-12-14 12:48:53,785 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 13 treesize of output 9 [2022-12-14 12:48:53,789 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 12:48:53,789 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:48:53,960 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 12:48:53,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077521323] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:48:53,961 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 12:48:53,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 6, 5] total 21 [2022-12-14 12:48:53,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733661741] [2022-12-14 12:48:53,961 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 12:48:53,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-14 12:48:53,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 12:48:53,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-14 12:48:53,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=347, Unknown=0, NotChecked=0, Total=462 [2022-12-14 12:48:53,962 INFO L87 Difference]: Start difference. First operand 118 states and 344 transitions. Second operand has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 22 states have internal predecessors, (36), 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 12:48:54,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:48:54,602 INFO L93 Difference]: Finished difference Result 152 states and 370 transitions. [2022-12-14 12:48:54,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 12:48:54,602 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 22 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-12-14 12:48:54,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:48:54,603 INFO L225 Difference]: With dead ends: 152 [2022-12-14 12:48:54,603 INFO L226 Difference]: Without dead ends: 152 [2022-12-14 12:48:54,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=180, Invalid=522, Unknown=0, NotChecked=0, Total=702 [2022-12-14 12:48:54,604 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 197 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-14 12:48:54,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 0 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-14 12:48:54,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2022-12-14 12:48:54,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 104. [2022-12-14 12:48:54,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 2.8349514563106797) internal successors, (292), 103 states have internal predecessors, (292), 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 12:48:54,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 292 transitions. [2022-12-14 12:48:54,607 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 292 transitions. Word has length 13 [2022-12-14 12:48:54,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:48:54,607 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 292 transitions. [2022-12-14 12:48:54,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 22 states have internal predecessors, (36), 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 12:48:54,607 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 292 transitions. [2022-12-14 12:48:54,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-14 12:48:54,608 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:48:54,608 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:48:54,614 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2022-12-14 12:48:54,839 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 (30)] Ended with exit code 0 [2022-12-14 12:48:55,014 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (31)] Ended with exit code 0 [2022-12-14 12:48:55,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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=3,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt [2022-12-14 12:48:55,210 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-14 12:48:55,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:48:55,211 INFO L85 PathProgramCache]: Analyzing trace with hash 2007372274, now seen corresponding path program 1 times [2022-12-14 12:48:55,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 12:48:55,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [608283112] [2022-12-14 12:48:55,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:48:55,213 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 12:48:55,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 12:48:55,216 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 12:48:55,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 (33)] Waiting until timeout for monitored process [2022-12-14 12:48:55,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:48:55,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-14 12:48:55,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:48:55,469 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 12:48:55,469 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 12:48:55,469 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 12:48:55,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [608283112] [2022-12-14 12:48:55,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [608283112] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:48:55,469 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:48:55,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 12:48:55,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329576377] [2022-12-14 12:48:55,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:48:55,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 12:48:55,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 12:48:55,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 12:48:55,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 12:48:55,471 INFO L87 Difference]: Start difference. First operand 104 states and 292 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 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 12:48:55,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:48:55,753 INFO L93 Difference]: Finished difference Result 141 states and 357 transitions. [2022-12-14 12:48:55,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 12:48:55,753 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 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 17 [2022-12-14 12:48:55,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:48:55,755 INFO L225 Difference]: With dead ends: 141 [2022-12-14 12:48:55,755 INFO L226 Difference]: Without dead ends: 126 [2022-12-14 12:48:55,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-14 12:48:55,756 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 27 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 12:48:55,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 0 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 12:48:55,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-12-14 12:48:55,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 104. [2022-12-14 12:48:55,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 2.796116504854369) internal successors, (288), 103 states have internal predecessors, (288), 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 12:48:55,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 288 transitions. [2022-12-14 12:48:55,758 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 288 transitions. Word has length 17 [2022-12-14 12:48:55,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:48:55,759 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 288 transitions. [2022-12-14 12:48:55,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 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 12:48:55,759 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 288 transitions. [2022-12-14 12:48:55,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-14 12:48:55,759 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:48:55,759 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:48:55,767 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 (33)] Ended with exit code 0 [2022-12-14 12:48:55,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 12:48:55,960 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-14 12:48:55,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:48:55,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1440370680, now seen corresponding path program 2 times [2022-12-14 12:48:55,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 12:48:55,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [74875977] [2022-12-14 12:48:55,963 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 12:48:55,963 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 12:48:55,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 12:48:55,966 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 12:48:55,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 (34)] Waiting until timeout for monitored process [2022-12-14 12:48:56,222 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-14 12:48:56,222 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 12:48:56,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-14 12:48:56,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:48:56,875 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 12:48:56,875 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 12:48:56,875 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 12:48:56,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [74875977] [2022-12-14 12:48:56,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [74875977] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:48:56,875 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:48:56,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 12:48:56,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797985255] [2022-12-14 12:48:56,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:48:56,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 12:48:56,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 12:48:56,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 12:48:56,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 12:48:56,876 INFO L87 Difference]: Start difference. First operand 104 states and 288 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 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 12:48:57,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:48:57,687 INFO L93 Difference]: Finished difference Result 139 states and 358 transitions. [2022-12-14 12:48:57,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 12:48:57,688 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 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 17 [2022-12-14 12:48:57,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:48:57,688 INFO L225 Difference]: With dead ends: 139 [2022-12-14 12:48:57,688 INFO L226 Difference]: Without dead ends: 130 [2022-12-14 12:48:57,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-12-14 12:48:57,689 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 19 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 12:48:57,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 0 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 12:48:57,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-12-14 12:48:57,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 108. [2022-12-14 12:48:57,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 2.7850467289719627) internal successors, (298), 107 states have internal predecessors, (298), 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 12:48:57,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 298 transitions. [2022-12-14 12:48:57,693 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 298 transitions. Word has length 17 [2022-12-14 12:48:57,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:48:57,694 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 298 transitions. [2022-12-14 12:48:57,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 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 12:48:57,694 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 298 transitions. [2022-12-14 12:48:57,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-14 12:48:57,695 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:48:57,695 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:48:57,702 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 (34)] Ended with exit code 0 [2022-12-14 12:48:57,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 12:48:57,895 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-14 12:48:57,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:48:57,895 INFO L85 PathProgramCache]: Analyzing trace with hash -422131022, now seen corresponding path program 3 times [2022-12-14 12:48:57,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 12:48:57,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [675516458] [2022-12-14 12:48:57,896 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 12:48:57,896 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 12:48:57,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 12:48:57,897 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 12:48:57,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 (35)] Waiting until timeout for monitored process [2022-12-14 12:48:57,984 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-12-14 12:48:57,984 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 12:48:57,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-14 12:48:57,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:48:58,110 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 12:48:58,110 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 12:48:58,110 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 12:48:58,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [675516458] [2022-12-14 12:48:58,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [675516458] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:48:58,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:48:58,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 12:48:58,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98413157] [2022-12-14 12:48:58,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:48:58,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 12:48:58,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 12:48:58,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 12:48:58,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 12:48:58,112 INFO L87 Difference]: Start difference. First operand 108 states and 298 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 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 12:48:58,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:48:58,433 INFO L93 Difference]: Finished difference Result 131 states and 331 transitions. [2022-12-14 12:48:58,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 12:48:58,434 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 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 17 [2022-12-14 12:48:58,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:48:58,434 INFO L225 Difference]: With dead ends: 131 [2022-12-14 12:48:58,434 INFO L226 Difference]: Without dead ends: 122 [2022-12-14 12:48:58,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-14 12:48:58,435 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 20 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 12:48:58,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 0 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 12:48:58,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2022-12-14 12:48:58,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 108. [2022-12-14 12:48:58,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 2.7663551401869158) internal successors, (296), 107 states have internal predecessors, (296), 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 12:48:58,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 296 transitions. [2022-12-14 12:48:58,438 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 296 transitions. Word has length 17 [2022-12-14 12:48:58,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:48:58,438 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 296 transitions. [2022-12-14 12:48:58,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 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 12:48:58,438 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 296 transitions. [2022-12-14 12:48:58,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-12-14 12:48:58,438 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:48:58,438 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:48:58,446 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 (35)] Forceful destruction successful, exit code 0 [2022-12-14 12:48:58,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 12:48:58,640 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-14 12:48:58,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:48:58,641 INFO L85 PathProgramCache]: Analyzing trace with hash -2129771100, now seen corresponding path program 4 times [2022-12-14 12:48:58,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 12:48:58,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [517736642] [2022-12-14 12:48:58,642 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 12:48:58,642 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 12:48:58,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 12:48:58,645 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 12:48:58,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 (36)] Waiting until timeout for monitored process [2022-12-14 12:48:58,918 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 12:48:58,918 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 12:48:58,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-14 12:48:58,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:48:59,103 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 12:48:59,104 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 12:48:59,104 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 12:48:59,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [517736642] [2022-12-14 12:48:59,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [517736642] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:48:59,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:48:59,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 12:48:59,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724731692] [2022-12-14 12:48:59,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:48:59,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 12:48:59,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 12:48:59,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 12:48:59,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 12:48:59,105 INFO L87 Difference]: Start difference. First operand 108 states and 296 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 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 12:48:59,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:48:59,389 INFO L93 Difference]: Finished difference Result 131 states and 332 transitions. [2022-12-14 12:48:59,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 12:48:59,389 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 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 17 [2022-12-14 12:48:59,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:48:59,390 INFO L225 Difference]: With dead ends: 131 [2022-12-14 12:48:59,390 INFO L226 Difference]: Without dead ends: 124 [2022-12-14 12:48:59,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-14 12:48:59,391 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 15 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 12:48:59,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 0 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 12:48:59,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-12-14 12:48:59,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 112. [2022-12-14 12:48:59,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 2.7117117117117115) internal successors, (301), 111 states have internal predecessors, (301), 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 12:48:59,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 301 transitions. [2022-12-14 12:48:59,396 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 301 transitions. Word has length 17 [2022-12-14 12:48:59,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:48:59,396 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 301 transitions. [2022-12-14 12:48:59,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 6 states have internal predecessors, (15), 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 12:48:59,396 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 301 transitions. [2022-12-14 12:48:59,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-14 12:48:59,397 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:48:59,397 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:48:59,409 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 (36)] Ended with exit code 0 [2022-12-14 12:48:59,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 12:48:59,597 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-14 12:48:59,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:48:59,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1986540892, now seen corresponding path program 1 times [2022-12-14 12:48:59,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 12:48:59,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2138478041] [2022-12-14 12:48:59,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:48:59,598 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 12:48:59,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 12:48:59,599 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 12:48:59,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 (37)] Waiting until timeout for monitored process [2022-12-14 12:48:59,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:48:59,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 12:48:59,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:48:59,778 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 12:48:59,778 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:48:59,878 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 12:48:59,880 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 12:48:59,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2138478041] [2022-12-14 12:48:59,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2138478041] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-14 12:48:59,880 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 12:48:59,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-12-14 12:48:59,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116959419] [2022-12-14 12:48:59,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:48:59,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 12:48:59,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 12:48:59,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 12:48:59,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-12-14 12:48:59,881 INFO L87 Difference]: Start difference. First operand 112 states and 301 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 12:49:00,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:49:00,187 INFO L93 Difference]: Finished difference Result 140 states and 361 transitions. [2022-12-14 12:49:00,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 12:49:00,188 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 18 [2022-12-14 12:49:00,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:49:00,188 INFO L225 Difference]: With dead ends: 140 [2022-12-14 12:49:00,189 INFO L226 Difference]: Without dead ends: 140 [2022-12-14 12:49:00,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-14 12:49:00,189 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 31 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 12:49:00,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 0 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 12:49:00,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-12-14 12:49:00,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 118. [2022-12-14 12:49:00,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 117 states have (on average 2.735042735042735) internal successors, (320), 117 states have internal predecessors, (320), 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 12:49:00,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 320 transitions. [2022-12-14 12:49:00,194 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 320 transitions. Word has length 18 [2022-12-14 12:49:00,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:49:00,194 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 320 transitions. [2022-12-14 12:49:00,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 12:49:00,194 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 320 transitions. [2022-12-14 12:49:00,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-14 12:49:00,195 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:49:00,195 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:49:00,203 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 (37)] Ended with exit code 0 [2022-12-14 12:49:00,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 12:49:00,396 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-14 12:49:00,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:49:00,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1890742180, now seen corresponding path program 2 times [2022-12-14 12:49:00,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 12:49:00,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [892849252] [2022-12-14 12:49:00,398 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 12:49:00,399 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 12:49:00,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 12:49:00,401 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 12:49:00,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 (38)] Waiting until timeout for monitored process [2022-12-14 12:49:00,578 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 12:49:00,578 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 12:49:00,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 12:49:00,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:49:00,682 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 12:49:00,682 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 12:49:00,682 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 12:49:00,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [892849252] [2022-12-14 12:49:00,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [892849252] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:49:00,683 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:49:00,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 12:49:00,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071664547] [2022-12-14 12:49:00,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:49:00,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 12:49:00,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 12:49:00,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 12:49:00,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 12:49:00,684 INFO L87 Difference]: Start difference. First operand 118 states and 320 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 12:49:00,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:49:00,950 INFO L93 Difference]: Finished difference Result 140 states and 359 transitions. [2022-12-14 12:49:00,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 12:49:00,951 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 18 [2022-12-14 12:49:00,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:49:00,952 INFO L225 Difference]: With dead ends: 140 [2022-12-14 12:49:00,952 INFO L226 Difference]: Without dead ends: 138 [2022-12-14 12:49:00,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-14 12:49:00,952 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 14 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 12:49:00,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 0 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 12:49:00,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2022-12-14 12:49:00,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 116. [2022-12-14 12:49:00,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 2.739130434782609) internal successors, (315), 115 states have internal predecessors, (315), 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 12:49:00,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 315 transitions. [2022-12-14 12:49:00,955 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 315 transitions. Word has length 18 [2022-12-14 12:49:00,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:49:00,955 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 315 transitions. [2022-12-14 12:49:00,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 12:49:00,955 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 315 transitions. [2022-12-14 12:49:00,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-14 12:49:00,955 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:49:00,956 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:49:00,964 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 (38)] Ended with exit code 0 [2022-12-14 12:49:01,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 12:49:01,156 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-14 12:49:01,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:49:01,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1547134524, now seen corresponding path program 3 times [2022-12-14 12:49:01,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 12:49:01,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1455013980] [2022-12-14 12:49:01,158 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 12:49:01,158 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 12:49:01,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 12:49:01,160 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 12:49:01,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 (39)] Waiting until timeout for monitored process [2022-12-14 12:49:01,303 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-14 12:49:01,303 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 12:49:01,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 12:49:01,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:49:01,390 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 12:49:01,390 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 12:49:01,390 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 12:49:01,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1455013980] [2022-12-14 12:49:01,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1455013980] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:49:01,391 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:49:01,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 12:49:01,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260380933] [2022-12-14 12:49:01,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:49:01,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 12:49:01,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 12:49:01,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 12:49:01,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 12:49:01,392 INFO L87 Difference]: Start difference. First operand 116 states and 315 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 12:49:01,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:49:01,572 INFO L93 Difference]: Finished difference Result 148 states and 382 transitions. [2022-12-14 12:49:01,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 12:49:01,573 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 18 [2022-12-14 12:49:01,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:49:01,574 INFO L225 Difference]: With dead ends: 148 [2022-12-14 12:49:01,574 INFO L226 Difference]: Without dead ends: 148 [2022-12-14 12:49:01,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 12:49:01,575 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 17 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 12:49:01,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 0 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 12:49:01,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2022-12-14 12:49:01,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 116. [2022-12-14 12:49:01,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 2.739130434782609) internal successors, (315), 115 states have internal predecessors, (315), 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 12:49:01,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 315 transitions. [2022-12-14 12:49:01,578 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 315 transitions. Word has length 18 [2022-12-14 12:49:01,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:49:01,578 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 315 transitions. [2022-12-14 12:49:01,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 12:49:01,578 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 315 transitions. [2022-12-14 12:49:01,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-14 12:49:01,579 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:49:01,579 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:49:01,587 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 (39)] Ended with exit code 0 [2022-12-14 12:49:01,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 12:49:01,780 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-14 12:49:01,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:49:01,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1575226873, now seen corresponding path program 1 times [2022-12-14 12:49:01,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 12:49:01,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1432779831] [2022-12-14 12:49:01,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:49:01,782 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 12:49:01,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 12:49:01,785 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 12:49:01,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 (40)] Waiting until timeout for monitored process [2022-12-14 12:49:01,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:49:01,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 12:49:02,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:49:02,116 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 12:49:02,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:49:02,416 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 12:49:02,416 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 12:49:02,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1432779831] [2022-12-14 12:49:02,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1432779831] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-14 12:49:02,416 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 12:49:02,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2022-12-14 12:49:02,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29937412] [2022-12-14 12:49:02,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:49:02,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 12:49:02,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 12:49:02,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 12:49:02,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-12-14 12:49:02,417 INFO L87 Difference]: Start difference. First operand 116 states and 315 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 12:49:02,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:49:02,818 INFO L93 Difference]: Finished difference Result 146 states and 378 transitions. [2022-12-14 12:49:02,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 12:49:02,818 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 18 [2022-12-14 12:49:02,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:49:02,820 INFO L225 Difference]: With dead ends: 146 [2022-12-14 12:49:02,820 INFO L226 Difference]: Without dead ends: 146 [2022-12-14 12:49:02,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-12-14 12:49:02,820 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 13 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 12:49:02,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 0 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 12:49:02,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2022-12-14 12:49:02,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 124. [2022-12-14 12:49:02,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 123 states have (on average 2.7398373983739837) internal successors, (337), 123 states have internal predecessors, (337), 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 12:49:02,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 337 transitions. [2022-12-14 12:49:02,823 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 337 transitions. Word has length 18 [2022-12-14 12:49:02,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:49:02,823 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 337 transitions. [2022-12-14 12:49:02,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 12:49:02,823 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 337 transitions. [2022-12-14 12:49:02,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-14 12:49:02,823 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:49:02,823 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:49:02,832 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 (40)] Ended with exit code 0 [2022-12-14 12:49:03,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 12:49:03,025 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-14 12:49:03,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:49:03,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1650557984, now seen corresponding path program 4 times [2022-12-14 12:49:03,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 12:49:03,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [734526025] [2022-12-14 12:49:03,027 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 12:49:03,027 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 12:49:03,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 12:49:03,030 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 12:49:03,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 (41)] Waiting until timeout for monitored process [2022-12-14 12:49:03,175 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 12:49:03,175 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 12:49:03,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 12:49:03,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:49:03,281 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 12:49:03,282 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 12:49:03,282 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 12:49:03,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [734526025] [2022-12-14 12:49:03,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [734526025] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:49:03,282 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:49:03,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 12:49:03,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461448432] [2022-12-14 12:49:03,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:49:03,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 12:49:03,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 12:49:03,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 12:49:03,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 12:49:03,283 INFO L87 Difference]: Start difference. First operand 124 states and 337 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 12:49:03,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:49:03,454 INFO L93 Difference]: Finished difference Result 128 states and 334 transitions. [2022-12-14 12:49:03,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 12:49:03,454 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 18 [2022-12-14 12:49:03,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:49:03,456 INFO L225 Difference]: With dead ends: 128 [2022-12-14 12:49:03,456 INFO L226 Difference]: Without dead ends: 128 [2022-12-14 12:49:03,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 12:49:03,456 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 17 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 12:49:03,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 0 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 12:49:03,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2022-12-14 12:49:03,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 114. [2022-12-14 12:49:03,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 113 states have (on average 2.663716814159292) internal successors, (301), 113 states have internal predecessors, (301), 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 12:49:03,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 301 transitions. [2022-12-14 12:49:03,459 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 301 transitions. Word has length 18 [2022-12-14 12:49:03,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:49:03,459 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 301 transitions. [2022-12-14 12:49:03,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 12:49:03,459 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 301 transitions. [2022-12-14 12:49:03,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-14 12:49:03,459 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:49:03,459 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:49:03,467 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 (41)] Ended with exit code 0 [2022-12-14 12:49:03,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 12:49:03,660 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-14 12:49:03,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:49:03,660 INFO L85 PathProgramCache]: Analyzing trace with hash -585817899, now seen corresponding path program 2 times [2022-12-14 12:49:03,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 12:49:03,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [134942861] [2022-12-14 12:49:03,660 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 12:49:03,660 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 12:49:03,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 12:49:03,661 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 12:49:03,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 (42)] Waiting until timeout for monitored process [2022-12-14 12:49:03,793 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 12:49:03,793 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 12:49:03,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 12:49:03,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:49:03,888 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 12:49:03,888 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 12:49:03,889 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 12:49:03,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [134942861] [2022-12-14 12:49:03,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [134942861] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:49:03,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:49:03,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 12:49:03,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750925210] [2022-12-14 12:49:03,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:49:03,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 12:49:03,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 12:49:03,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 12:49:03,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 12:49:03,890 INFO L87 Difference]: Start difference. First operand 114 states and 301 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 12:49:04,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:49:04,119 INFO L93 Difference]: Finished difference Result 118 states and 304 transitions. [2022-12-14 12:49:04,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 12:49:04,119 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 18 [2022-12-14 12:49:04,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:49:04,120 INFO L225 Difference]: With dead ends: 118 [2022-12-14 12:49:04,120 INFO L226 Difference]: Without dead ends: 114 [2022-12-14 12:49:04,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-12-14 12:49:04,120 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 12 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 12:49:04,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 0 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 12:49:04,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-12-14 12:49:04,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2022-12-14 12:49:04,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 113 states have (on average 2.646017699115044) internal successors, (299), 113 states have internal predecessors, (299), 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 12:49:04,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 299 transitions. [2022-12-14 12:49:04,123 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 299 transitions. Word has length 18 [2022-12-14 12:49:04,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:49:04,124 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 299 transitions. [2022-12-14 12:49:04,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 12:49:04,124 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 299 transitions. [2022-12-14 12:49:04,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-14 12:49:04,124 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:49:04,124 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:49:04,132 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 (42)] Ended with exit code 0 [2022-12-14 12:49:04,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 12:49:04,325 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-14 12:49:04,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:49:04,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1471803413, now seen corresponding path program 3 times [2022-12-14 12:49:04,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 12:49:04,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [240286607] [2022-12-14 12:49:04,328 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 12:49:04,328 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 12:49:04,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 12:49:04,331 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 12:49:04,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 (43)] Waiting until timeout for monitored process [2022-12-14 12:49:04,606 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-14 12:49:04,606 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 12:49:04,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 12:49:04,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:49:04,717 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 12:49:04,717 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:49:04,937 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 12:49:04,937 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 12:49:04,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [240286607] [2022-12-14 12:49:04,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [240286607] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-14 12:49:04,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 12:49:04,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2022-12-14 12:49:04,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893960348] [2022-12-14 12:49:04,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:49:04,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 12:49:04,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 12:49:04,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 12:49:04,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-12-14 12:49:04,939 INFO L87 Difference]: Start difference. First operand 114 states and 299 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 12:49:05,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:49:05,419 INFO L93 Difference]: Finished difference Result 154 states and 378 transitions. [2022-12-14 12:49:05,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 12:49:05,420 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 18 [2022-12-14 12:49:05,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:49:05,421 INFO L225 Difference]: With dead ends: 154 [2022-12-14 12:49:05,421 INFO L226 Difference]: Without dead ends: 154 [2022-12-14 12:49:05,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-12-14 12:49:05,421 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 23 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 12:49:05,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 0 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 12:49:05,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2022-12-14 12:49:05,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 112. [2022-12-14 12:49:05,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 2.6486486486486487) internal successors, (294), 111 states have internal predecessors, (294), 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 12:49:05,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 294 transitions. [2022-12-14 12:49:05,424 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 294 transitions. Word has length 18 [2022-12-14 12:49:05,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:49:05,424 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 294 transitions. [2022-12-14 12:49:05,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 12:49:05,424 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 294 transitions. [2022-12-14 12:49:05,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-14 12:49:05,424 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:49:05,424 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:49:05,432 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 (43)] Ended with exit code 0 [2022-12-14 12:49:05,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 12:49:05,626 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-14 12:49:05,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:49:05,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1651505557, now seen corresponding path program 4 times [2022-12-14 12:49:05,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 12:49:05,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2049353007] [2022-12-14 12:49:05,628 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 12:49:05,628 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 12:49:05,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 12:49:05,631 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 12:49:05,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 (44)] Waiting until timeout for monitored process [2022-12-14 12:49:05,886 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 12:49:05,887 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 12:49:05,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 12:49:05,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:49:05,958 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 12:49:05,958 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:49:06,067 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 12:49:06,067 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 12:49:06,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2049353007] [2022-12-14 12:49:06,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2049353007] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-14 12:49:06,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 12:49:06,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-12-14 12:49:06,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630170436] [2022-12-14 12:49:06,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:49:06,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 12:49:06,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 12:49:06,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 12:49:06,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-12-14 12:49:06,068 INFO L87 Difference]: Start difference. First operand 112 states and 294 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 12:49:06,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:49:06,389 INFO L93 Difference]: Finished difference Result 118 states and 301 transitions. [2022-12-14 12:49:06,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 12:49:06,390 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 18 [2022-12-14 12:49:06,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:49:06,390 INFO L225 Difference]: With dead ends: 118 [2022-12-14 12:49:06,390 INFO L226 Difference]: Without dead ends: 118 [2022-12-14 12:49:06,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-14 12:49:06,391 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 19 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 12:49:06,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 0 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 12:49:06,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-12-14 12:49:06,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 104. [2022-12-14 12:49:06,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 2.563106796116505) internal successors, (264), 103 states have internal predecessors, (264), 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 12:49:06,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 264 transitions. [2022-12-14 12:49:06,393 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 264 transitions. Word has length 18 [2022-12-14 12:49:06,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:49:06,393 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 264 transitions. [2022-12-14 12:49:06,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 12:49:06,393 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 264 transitions. [2022-12-14 12:49:06,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-12-14 12:49:06,393 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:49:06,393 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:49:06,401 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 (44)] Ended with exit code 0 [2022-12-14 12:49:06,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 12:49:06,594 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2022-12-14 12:49:06,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:49:06,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1606927739, now seen corresponding path program 1 times [2022-12-14 12:49:06,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 12:49:06,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2080342239] [2022-12-14 12:49:06,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:49:06,597 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 12:49:06,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 12:49:06,600 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 12:49:06,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/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 (45)] Waiting until timeout for monitored process [2022-12-14 12:49:06,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:49:06,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 22 conjunts are in the unsatisfiable core [2022-12-14 12:49:06,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:49:07,370 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 12:49:07,370 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 386 treesize of output 144 [2022-12-14 12:49:11,370 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 12:49:11,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:49:15,088 INFO L321 Elim1Store]: treesize reduction 132, result has 23.7 percent of original size [2022-12-14 12:49:15,088 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 919 treesize of output 385 [2022-12-14 12:54:46,575 WARN L233 SmtUtils]: Spent 5.43m on a formula simplification. DAG size of input: 399 DAG size of output: 97 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 12:54:46,581 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 12:54:46,581 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 12:54:46,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2080342239] [2022-12-14 12:54:46,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2080342239] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:54:46,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1200143012] [2022-12-14 12:54:46,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:54:46,582 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 12:54:46,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 12:54:46,583 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 12:54:46,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (46)] Waiting until timeout for monitored process [2022-12-14 12:54:46,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:54:46,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-14 12:54:46,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:54:47,787 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 12:54:47,787 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 377 treesize of output 169 [2022-12-14 12:54:47,950 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 12:54:47,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:54:50,259 INFO L321 Elim1Store]: treesize reduction 132, result has 23.7 percent of original size [2022-12-14 12:54:50,260 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 727 treesize of output 333 [2022-12-14 13:00:24,796 WARN L233 SmtUtils]: Spent 5.44m on a formula simplification. DAG size of input: 420 DAG size of output: 95 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 13:00:24,802 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 13:00:24,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1200143012] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 13:00:24,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1101787811] [2022-12-14 13:00:24,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:00:24,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 13:00:24,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:00:24,804 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 13:00:24,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b20c6bff-183d-4187-b55d-8968e2a5efa2/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-12-14 13:00:25,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:00:25,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 23 conjunts are in the unsatisfiable core [2022-12-14 13:00:25,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 13:00:25,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:00:25,387 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:00:25,387 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:00:25,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:00:25,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:00:25,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 13:00:25,390 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:00:25,391 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 13:00:25,408 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 13:00:25,408 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 521 treesize of output 181 [2022-12-14 13:00:29,509 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 13:00:29,509 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 13:00:32,489 INFO L321 Elim1Store]: treesize reduction 132, result has 23.7 percent of original size [2022-12-14 13:00:32,490 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 630 treesize of output 280