./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0 --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 f0735ebc421a940bb70b06777060abaef432af6ff0cfdeb82bfa2e45a81b4e11 --- 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-e04fb08 [2022-11-16 19:39:13,371 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 19:39:13,373 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 19:39:13,411 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 19:39:13,413 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 19:39:13,417 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 19:39:13,419 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 19:39:13,422 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 19:39:13,425 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 19:39:13,427 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 19:39:13,429 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 19:39:13,431 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 19:39:13,431 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 19:39:13,436 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 19:39:13,437 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 19:39:13,441 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 19:39:13,443 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 19:39:13,444 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 19:39:13,446 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 19:39:13,447 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 19:39:13,452 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 19:39:13,453 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 19:39:13,454 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 19:39:13,455 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 19:39:13,460 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 19:39:13,464 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 19:39:13,465 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 19:39:13,466 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 19:39:13,467 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 19:39:13,468 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 19:39:13,469 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 19:39:13,469 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 19:39:13,471 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 19:39:13,472 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 19:39:13,474 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 19:39:13,474 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 19:39:13,475 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 19:39:13,475 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 19:39:13,476 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 19:39:13,477 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 19:39:13,477 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 19:39:13,478 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-11-16 19:39:13,519 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 19:39:13,519 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 19:39:13,520 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 19:39:13,520 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 19:39:13,521 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 19:39:13,521 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 19:39:13,521 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 19:39:13,521 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 19:39:13,522 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 19:39:13,522 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 19:39:13,523 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 19:39:13,523 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 19:39:13,523 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 19:39:13,524 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 19:39:13,524 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 19:39:13,524 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 19:39:13,524 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 19:39:13,524 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 19:39:13,525 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 19:39:13,525 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 19:39:13,525 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 19:39:13,526 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 19:39:13,526 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 19:39:13,526 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 19:39:13,526 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 19:39:13,527 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 19:39:13,527 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-16 19:39:13,527 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-16 19:39:13,527 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-16 19:39:13,528 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 19:39:13,528 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 19:39:13,528 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 19:39:13,528 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 19:39:13,528 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 19:39:13,529 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 19:39:13,529 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 19:39:13,529 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 19:39:13,529 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 19:39:13,529 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 19:39:13,530 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 19:39:13,530 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 19:39:13,530 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 19:39:13,530 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_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f0735ebc421a940bb70b06777060abaef432af6ff0cfdeb82bfa2e45a81b4e11 [2022-11-16 19:39:13,859 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 19:39:13,885 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 19:39:13,889 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 19:39:13,890 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 19:39:13,890 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 19:39:13,892 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-1.i [2022-11-16 19:39:13,965 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/data/14d06c04a/ef7c620ae0b54d79a4fe5ea78e50a794/FLAGfaae3d862 [2022-11-16 19:39:14,520 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 19:39:14,521 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-1.i [2022-11-16 19:39:14,537 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/data/14d06c04a/ef7c620ae0b54d79a4fe5ea78e50a794/FLAGfaae3d862 [2022-11-16 19:39:14,813 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/data/14d06c04a/ef7c620ae0b54d79a4fe5ea78e50a794 [2022-11-16 19:39:14,816 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 19:39:14,817 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 19:39:14,822 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 19:39:14,822 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 19:39:14,826 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 19:39:14,827 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:39:14" (1/1) ... [2022-11-16 19:39:14,828 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b081937 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:39:14, skipping insertion in model container [2022-11-16 19:39:14,828 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:39:14" (1/1) ... [2022-11-16 19:39:14,835 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 19:39:14,916 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 19:39:15,294 WARN L229 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_9406e99e-d1a3-490b-9557-1cffdcdecfba/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-1.i[37019,37032] [2022-11-16 19:39:15,427 WARN L229 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_9406e99e-d1a3-490b-9557-1cffdcdecfba/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-1.i[47352,47365] [2022-11-16 19:39:15,447 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 19:39:15,457 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2022-11-16 19:39:15,458 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@23efb34b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:39:15, skipping insertion in model container [2022-11-16 19:39:15,459 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 19:39:15,459 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-16 19:39:15,461 INFO L158 Benchmark]: Toolchain (without parser) took 642.82ms. Allocated memory is still 136.3MB. Free memory was 98.9MB in the beginning and 101.9MB in the end (delta: -3.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 19:39:15,461 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 88.1MB. Free memory was 58.7MB in the beginning and 58.7MB in the end (delta: 24.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 19:39:15,462 INFO L158 Benchmark]: CACSL2BoogieTranslator took 636.87ms. Allocated memory is still 136.3MB. Free memory was 98.9MB in the beginning and 101.9MB in the end (delta: -3.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 19:39:15,463 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 88.1MB. Free memory was 58.7MB in the beginning and 58.7MB in the end (delta: 24.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 636.87ms. Allocated memory is still 136.3MB. Free memory was 98.9MB in the beginning and 101.9MB in the end (delta: -3.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 815]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0 --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 f0735ebc421a940bb70b06777060abaef432af6ff0cfdeb82bfa2e45a81b4e11 --- 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-e04fb08 [2022-11-16 19:39:17,498 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 19:39:17,500 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 19:39:17,530 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 19:39:17,531 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 19:39:17,532 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 19:39:17,533 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 19:39:17,535 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 19:39:17,537 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 19:39:17,538 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 19:39:17,539 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 19:39:17,540 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 19:39:17,541 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 19:39:17,542 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 19:39:17,543 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 19:39:17,544 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 19:39:17,545 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 19:39:17,546 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 19:39:17,548 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 19:39:17,550 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 19:39:17,551 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 19:39:17,555 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 19:39:17,556 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 19:39:17,558 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 19:39:17,562 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 19:39:17,562 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 19:39:17,563 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 19:39:17,564 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 19:39:17,564 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 19:39:17,565 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 19:39:17,566 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 19:39:17,567 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 19:39:17,567 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 19:39:17,568 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 19:39:17,570 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 19:39:17,570 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 19:39:17,571 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 19:39:17,571 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 19:39:17,572 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 19:39:17,573 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 19:39:17,573 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 19:39:17,574 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2022-11-16 19:39:17,601 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 19:39:17,606 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 19:39:17,608 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 19:39:17,608 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 19:39:17,609 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 19:39:17,612 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 19:39:17,612 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 19:39:17,612 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 19:39:17,612 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 19:39:17,613 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 19:39:17,614 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 19:39:17,614 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 19:39:17,615 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 19:39:17,615 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 19:39:17,616 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 19:39:17,616 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 19:39:17,616 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 19:39:17,616 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 19:39:17,617 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 19:39:17,617 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 19:39:17,617 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-16 19:39:17,617 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-16 19:39:17,617 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-16 19:39:17,618 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 19:39:17,618 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 19:39:17,618 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-16 19:39:17,618 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-16 19:39:17,618 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 19:39:17,619 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 19:39:17,619 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 19:39:17,619 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 19:39:17,620 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 19:39:17,620 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 19:39:17,620 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 19:39:17,620 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 19:39:17,621 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-16 19:39:17,621 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-16 19:39:17,621 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 19:39:17,621 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-16 19:39:17,621 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_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f0735ebc421a940bb70b06777060abaef432af6ff0cfdeb82bfa2e45a81b4e11 [2022-11-16 19:39:18,005 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 19:39:18,030 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 19:39:18,032 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 19:39:18,033 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 19:39:18,035 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 19:39:18,036 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-1.i [2022-11-16 19:39:18,123 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/data/add74374d/6887707a019a45a5aa19926e8fc6b4e6/FLAG78756ce46 [2022-11-16 19:39:18,726 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 19:39:18,727 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-1.i [2022-11-16 19:39:18,742 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/data/add74374d/6887707a019a45a5aa19926e8fc6b4e6/FLAG78756ce46 [2022-11-16 19:39:18,989 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/data/add74374d/6887707a019a45a5aa19926e8fc6b4e6 [2022-11-16 19:39:18,991 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 19:39:18,993 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 19:39:18,994 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 19:39:18,994 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 19:39:19,002 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 19:39:19,003 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:39:18" (1/1) ... [2022-11-16 19:39:19,004 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f09ef11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:39:19, skipping insertion in model container [2022-11-16 19:39:19,004 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:39:18" (1/1) ... [2022-11-16 19:39:19,011 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 19:39:19,055 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 19:39:19,548 WARN L229 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_9406e99e-d1a3-490b-9557-1cffdcdecfba/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-1.i[37019,37032] [2022-11-16 19:39:19,706 WARN L229 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_9406e99e-d1a3-490b-9557-1cffdcdecfba/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-1.i[47352,47365] [2022-11-16 19:39:19,723 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 19:39:19,733 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-16 19:39:19,765 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 19:39:19,792 WARN L229 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_9406e99e-d1a3-490b-9557-1cffdcdecfba/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-1.i[37019,37032] [2022-11-16 19:39:19,890 WARN L229 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_9406e99e-d1a3-490b-9557-1cffdcdecfba/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-1.i[47352,47365] [2022-11-16 19:39:19,892 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 19:39:19,900 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 19:39:19,926 WARN L229 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_9406e99e-d1a3-490b-9557-1cffdcdecfba/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-1.i[37019,37032] [2022-11-16 19:39:20,015 WARN L229 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_9406e99e-d1a3-490b-9557-1cffdcdecfba/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test2-1.i[47352,47365] [2022-11-16 19:39:20,017 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 19:39:20,065 INFO L208 MainTranslator]: Completed translation [2022-11-16 19:39:20,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:39:20 WrapperNode [2022-11-16 19:39:20,065 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 19:39:20,067 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 19:39:20,067 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 19:39:20,067 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 19:39:20,074 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:39:20" (1/1) ... [2022-11-16 19:39:20,118 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:39:20" (1/1) ... [2022-11-16 19:39:20,194 INFO L138 Inliner]: procedures = 211, calls = 235, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 886 [2022-11-16 19:39:20,195 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 19:39:20,195 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 19:39:20,196 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 19:39:20,196 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 19:39:20,213 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:39:20" (1/1) ... [2022-11-16 19:39:20,216 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:39:20" (1/1) ... [2022-11-16 19:39:20,225 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:39:20" (1/1) ... [2022-11-16 19:39:20,226 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:39:20" (1/1) ... [2022-11-16 19:39:20,266 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:39:20" (1/1) ... [2022-11-16 19:39:20,277 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:39:20" (1/1) ... [2022-11-16 19:39:20,282 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:39:20" (1/1) ... [2022-11-16 19:39:20,286 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:39:20" (1/1) ... [2022-11-16 19:39:20,294 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 19:39:20,295 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 19:39:20,295 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 19:39:20,296 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 19:39:20,296 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:39:20" (1/1) ... [2022-11-16 19:39:20,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 19:39:20,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:39:20,328 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 19:39:20,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 19:39:20,398 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-16 19:39:20,398 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-16 19:39:20,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-16 19:39:20,399 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-16 19:39:20,399 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 19:39:20,399 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-16 19:39:20,399 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-16 19:39:20,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 19:39:20,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-16 19:39:20,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-16 19:39:20,400 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-16 19:39:20,400 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-16 19:39:20,400 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 19:39:20,400 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 19:39:20,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-16 19:39:20,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 19:39:20,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 19:39:20,589 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 19:39:20,591 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 19:39:20,595 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-16 19:39:24,759 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 19:39:24,770 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 19:39:24,770 INFO L300 CfgBuilder]: Removed 54 assume(true) statements. [2022-11-16 19:39:24,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 07:39:24 BoogieIcfgContainer [2022-11-16 19:39:24,773 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 19:39:24,775 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 19:39:24,775 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 19:39:24,778 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 19:39:24,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 07:39:18" (1/3) ... [2022-11-16 19:39:24,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c92f3ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:39:24, skipping insertion in model container [2022-11-16 19:39:24,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:39:20" (2/3) ... [2022-11-16 19:39:24,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c92f3ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:39:24, skipping insertion in model container [2022-11-16 19:39:24,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 07:39:24" (3/3) ... [2022-11-16 19:39:24,780 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_BER_test2-1.i [2022-11-16 19:39:24,797 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 19:39:24,798 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 431 error locations. [2022-11-16 19:39:24,860 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 19:39:24,866 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;@434384c7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 19:39:24,866 INFO L358 AbstractCegarLoop]: Starting to check reachability of 431 error locations. [2022-11-16 19:39:24,872 INFO L276 IsEmpty]: Start isEmpty. Operand has 881 states, 442 states have (on average 2.2171945701357467) internal successors, (980), 875 states have internal predecessors, (980), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-16 19:39:24,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-16 19:39:24,880 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:39:24,881 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-16 19:39:24,881 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-11-16 19:39:24,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:39:24,888 INFO L85 PathProgramCache]: Analyzing trace with hash 38794, now seen corresponding path program 1 times [2022-11-16 19:39:24,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 19:39:24,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1756921494] [2022-11-16 19:39:24,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:39:24,901 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 19:39:24,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 19:39:24,910 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 19:39:24,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-16 19:39:25,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:39:25,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 19:39:25,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:39:25,123 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 19:39:25,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:39:25,135 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 19:39:25,136 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 19:39:25,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1756921494] [2022-11-16 19:39:25,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1756921494] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:39:25,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:39:25,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 19:39:25,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351258046] [2022-11-16 19:39:25,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:39:25,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 19:39:25,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 19:39:25,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 19:39:25,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 19:39:25,173 INFO L87 Difference]: Start difference. First operand has 881 states, 442 states have (on average 2.2171945701357467) internal successors, (980), 875 states have internal predecessors, (980), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:39:26,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:39:26,968 INFO L93 Difference]: Finished difference Result 868 states and 923 transitions. [2022-11-16 19:39:26,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 19:39:26,971 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-16 19:39:26,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:39:26,989 INFO L225 Difference]: With dead ends: 868 [2022-11-16 19:39:26,989 INFO L226 Difference]: Without dead ends: 866 [2022-11-16 19:39:26,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 19:39:26,994 INFO L413 NwaCegarLoop]: 533 mSDtfsCounter, 802 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 810 SdHoareTripleChecker+Valid, 580 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-16 19:39:26,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [810 Valid, 580 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-16 19:39:27,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2022-11-16 19:39:27,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 865. [2022-11-16 19:39:27,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 865 states, 442 states have (on average 2.0475113122171944) internal successors, (905), 859 states have internal predecessors, (905), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-16 19:39:27,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 865 states to 865 states and 921 transitions. [2022-11-16 19:39:27,084 INFO L78 Accepts]: Start accepts. Automaton has 865 states and 921 transitions. Word has length 3 [2022-11-16 19:39:27,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:39:27,084 INFO L495 AbstractCegarLoop]: Abstraction has 865 states and 921 transitions. [2022-11-16 19:39:27,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:39:27,085 INFO L276 IsEmpty]: Start isEmpty. Operand 865 states and 921 transitions. [2022-11-16 19:39:27,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-16 19:39:27,085 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:39:27,085 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-16 19:39:27,099 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-16 19:39:27,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 19:39:27,299 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-11-16 19:39:27,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:39:27,300 INFO L85 PathProgramCache]: Analyzing trace with hash 38795, now seen corresponding path program 1 times [2022-11-16 19:39:27,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 19:39:27,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1624883987] [2022-11-16 19:39:27,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:39:27,301 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 19:39:27,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 19:39:27,302 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 19:39:27,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-16 19:39:27,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:39:27,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 19:39:27,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:39:27,433 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 19:39:27,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:39:27,446 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 19:39:27,446 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 19:39:27,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1624883987] [2022-11-16 19:39:27,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1624883987] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:39:27,447 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:39:27,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 19:39:27,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463963124] [2022-11-16 19:39:27,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:39:27,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 19:39:27,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 19:39:27,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 19:39:27,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 19:39:27,450 INFO L87 Difference]: Start difference. First operand 865 states and 921 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:39:29,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:39:29,971 INFO L93 Difference]: Finished difference Result 1084 states and 1171 transitions. [2022-11-16 19:39:29,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 19:39:29,971 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-16 19:39:29,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:39:29,975 INFO L225 Difference]: With dead ends: 1084 [2022-11-16 19:39:29,976 INFO L226 Difference]: Without dead ends: 1084 [2022-11-16 19:39:29,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 19:39:29,977 INFO L413 NwaCegarLoop]: 826 mSDtfsCounter, 240 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 1308 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-16 19:39:29,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 1308 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-16 19:39:29,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1084 states. [2022-11-16 19:39:30,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1084 to 997. [2022-11-16 19:39:30,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 997 states, 570 states have (on average 2.0052631578947366) internal successors, (1143), 991 states have internal predecessors, (1143), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-16 19:39:30,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1169 transitions. [2022-11-16 19:39:30,007 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1169 transitions. Word has length 3 [2022-11-16 19:39:30,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:39:30,008 INFO L495 AbstractCegarLoop]: Abstraction has 997 states and 1169 transitions. [2022-11-16 19:39:30,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:39:30,008 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1169 transitions. [2022-11-16 19:39:30,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-16 19:39:30,008 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:39:30,008 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:39:30,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-16 19:39:30,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 19:39:30,220 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-11-16 19:39:30,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:39:30,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1466973012, now seen corresponding path program 1 times [2022-11-16 19:39:30,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 19:39:30,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [583449432] [2022-11-16 19:39:30,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:39:30,221 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 19:39:30,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 19:39:30,223 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 19:39:30,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-16 19:39:30,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:39:30,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 19:39:30,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:39:30,379 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 19:39:30,386 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 19:39:30,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:39:30,470 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-16 19:39:30,490 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 19:39:30,491 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-16 19:39:30,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:39:30,520 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 19:39:30,520 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 19:39:30,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [583449432] [2022-11-16 19:39:30,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [583449432] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:39:30,522 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:39:30,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 19:39:30,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621025636] [2022-11-16 19:39:30,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:39:30,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 19:39:30,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 19:39:30,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 19:39:30,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 19:39:30,524 INFO L87 Difference]: Start difference. First operand 997 states and 1169 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:39:32,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:39:32,966 INFO L93 Difference]: Finished difference Result 987 states and 1158 transitions. [2022-11-16 19:39:32,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 19:39:32,967 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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 [2022-11-16 19:39:32,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:39:32,971 INFO L225 Difference]: With dead ends: 987 [2022-11-16 19:39:32,971 INFO L226 Difference]: Without dead ends: 987 [2022-11-16 19:39:32,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 19:39:32,973 INFO L413 NwaCegarLoop]: 310 mSDtfsCounter, 1662 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 671 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1670 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 671 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-16 19:39:32,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1670 Valid, 336 Invalid, 700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 671 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-16 19:39:32,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 987 states. [2022-11-16 19:39:33,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 987 to 854. [2022-11-16 19:39:33,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 442 states have (on average 2.020361990950226) internal successors, (893), 848 states have internal predecessors, (893), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-16 19:39:33,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 909 transitions. [2022-11-16 19:39:33,016 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 909 transitions. Word has length 7 [2022-11-16 19:39:33,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:39:33,017 INFO L495 AbstractCegarLoop]: Abstraction has 854 states and 909 transitions. [2022-11-16 19:39:33,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:39:33,017 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 909 transitions. [2022-11-16 19:39:33,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-16 19:39:33,018 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:39:33,018 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:39:33,031 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-16 19:39:33,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 19:39:33,227 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-11-16 19:39:33,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:39:33,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476910, now seen corresponding path program 1 times [2022-11-16 19:39:33,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 19:39:33,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [401515467] [2022-11-16 19:39:33,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:39:33,228 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 19:39:33,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 19:39:33,230 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 19:39:33,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-16 19:39:33,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:39:33,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 19:39:33,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:39:33,358 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 19:39:33,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:39:33,370 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 19:39:33,371 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 19:39:33,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [401515467] [2022-11-16 19:39:33,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [401515467] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:39:33,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:39:33,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 19:39:33,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154351721] [2022-11-16 19:39:33,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:39:33,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 19:39:33,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 19:39:33,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 19:39:33,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 19:39:33,373 INFO L87 Difference]: Start difference. First operand 854 states and 909 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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) [2022-11-16 19:39:35,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:39:35,192 INFO L93 Difference]: Finished difference Result 1030 states and 1116 transitions. [2022-11-16 19:39:35,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 19:39:35,194 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-16 19:39:35,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:39:35,198 INFO L225 Difference]: With dead ends: 1030 [2022-11-16 19:39:35,198 INFO L226 Difference]: Without dead ends: 1030 [2022-11-16 19:39:35,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 19:39:35,199 INFO L413 NwaCegarLoop]: 693 mSDtfsCounter, 812 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 820 SdHoareTripleChecker+Valid, 869 SdHoareTripleChecker+Invalid, 577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-16 19:39:35,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [820 Valid, 869 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-16 19:39:35,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1030 states. [2022-11-16 19:39:35,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1030 to 807. [2022-11-16 19:39:35,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 807 states, 442 states have (on average 1.914027149321267) internal successors, (846), 801 states have internal predecessors, (846), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-16 19:39:35,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 807 states to 807 states and 862 transitions. [2022-11-16 19:39:35,227 INFO L78 Accepts]: Start accepts. Automaton has 807 states and 862 transitions. Word has length 8 [2022-11-16 19:39:35,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:39:35,227 INFO L495 AbstractCegarLoop]: Abstraction has 807 states and 862 transitions. [2022-11-16 19:39:35,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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) [2022-11-16 19:39:35,227 INFO L276 IsEmpty]: Start isEmpty. Operand 807 states and 862 transitions. [2022-11-16 19:39:35,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-16 19:39:35,228 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:39:35,228 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:39:35,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-16 19:39:35,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 19:39:35,442 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-11-16 19:39:35,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:39:35,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476909, now seen corresponding path program 1 times [2022-11-16 19:39:35,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 19:39:35,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1915612700] [2022-11-16 19:39:35,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:39:35,444 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 [2022-11-16 19:39:35,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 19:39:35,449 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 19:39:35,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-16 19:39:35,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:39:35,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 19:39:35,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:39:35,588 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 19:39:35,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:39:35,613 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 19:39:35,613 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 19:39:35,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1915612700] [2022-11-16 19:39:35,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1915612700] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:39:35,614 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:39:35,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 19:39:35,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173369114] [2022-11-16 19:39:35,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:39:35,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 19:39:35,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 19:39:35,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 19:39:35,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 19:39:35,616 INFO L87 Difference]: Start difference. First operand 807 states and 862 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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) [2022-11-16 19:39:38,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:39:38,067 INFO L93 Difference]: Finished difference Result 1097 states and 1185 transitions. [2022-11-16 19:39:38,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 19:39:38,068 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-16 19:39:38,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:39:38,072 INFO L225 Difference]: With dead ends: 1097 [2022-11-16 19:39:38,072 INFO L226 Difference]: Without dead ends: 1097 [2022-11-16 19:39:38,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 19:39:38,073 INFO L413 NwaCegarLoop]: 887 mSDtfsCounter, 501 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 506 SdHoareTripleChecker+Valid, 1225 SdHoareTripleChecker+Invalid, 555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-16 19:39:38,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [506 Valid, 1225 Invalid, 555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-16 19:39:38,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1097 states. [2022-11-16 19:39:38,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1097 to 829. [2022-11-16 19:39:38,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 829 states, 474 states have (on average 1.9029535864978904) internal successors, (902), 823 states have internal predecessors, (902), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-16 19:39:38,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 829 states to 829 states and 918 transitions. [2022-11-16 19:39:38,091 INFO L78 Accepts]: Start accepts. Automaton has 829 states and 918 transitions. Word has length 8 [2022-11-16 19:39:38,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:39:38,092 INFO L495 AbstractCegarLoop]: Abstraction has 829 states and 918 transitions. [2022-11-16 19:39:38,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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) [2022-11-16 19:39:38,092 INFO L276 IsEmpty]: Start isEmpty. Operand 829 states and 918 transitions. [2022-11-16 19:39:38,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-16 19:39:38,093 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:39:38,093 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:39:38,104 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-11-16 19:39:38,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 19:39:38,306 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr429ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-11-16 19:39:38,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:39:38,307 INFO L85 PathProgramCache]: Analyzing trace with hash 2100586073, now seen corresponding path program 1 times [2022-11-16 19:39:38,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 19:39:38,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [214268778] [2022-11-16 19:39:38,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:39:38,308 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 19:39:38,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 19:39:38,309 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 19:39:38,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-16 19:39:38,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:39:38,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 19:39:38,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:39:38,490 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:39:38,490 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:39:38,491 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:39:38,494 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2022-11-16 19:39:38,547 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 19:39:38,547 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 70 treesize of output 26 [2022-11-16 19:39:38,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:39:38,562 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 19:39:38,562 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 19:39:38,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [214268778] [2022-11-16 19:39:38,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [214268778] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:39:38,563 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:39:38,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 19:39:38,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599627207] [2022-11-16 19:39:38,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:39:38,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 19:39:38,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 19:39:38,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 19:39:38,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 19:39:38,565 INFO L87 Difference]: Start difference. First operand 829 states and 918 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:39:40,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:39:40,059 INFO L93 Difference]: Finished difference Result 1050 states and 1169 transitions. [2022-11-16 19:39:40,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 19:39:40,060 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-16 19:39:40,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:39:40,064 INFO L225 Difference]: With dead ends: 1050 [2022-11-16 19:39:40,064 INFO L226 Difference]: Without dead ends: 1050 [2022-11-16 19:39:40,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 19:39:40,065 INFO L413 NwaCegarLoop]: 813 mSDtfsCounter, 238 mSDsluCounter, 1514 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 2327 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-16 19:39:40,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 2327 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-16 19:39:40,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1050 states. [2022-11-16 19:39:40,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1050 to 831. [2022-11-16 19:39:40,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 831 states, 476 states have (on average 1.8991596638655461) internal successors, (904), 825 states have internal predecessors, (904), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-16 19:39:40,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 920 transitions. [2022-11-16 19:39:40,083 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 920 transitions. Word has length 10 [2022-11-16 19:39:40,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:39:40,084 INFO L495 AbstractCegarLoop]: Abstraction has 831 states and 920 transitions. [2022-11-16 19:39:40,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:39:40,084 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 920 transitions. [2022-11-16 19:39:40,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-16 19:39:40,085 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:39:40,085 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:39:40,098 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-16 19:39:40,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 19:39:40,298 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-11-16 19:39:40,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:39:40,298 INFO L85 PathProgramCache]: Analyzing trace with hash -344619170, now seen corresponding path program 1 times [2022-11-16 19:39:40,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 19:39:40,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1403681241] [2022-11-16 19:39:40,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:39:40,299 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 19:39:40,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 19:39:40,300 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 19:39:40,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-16 19:39:40,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:39:40,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-16 19:39:40,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:39:40,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:39:40,493 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 19:39:40,494 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 19:39:40,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1403681241] [2022-11-16 19:39:40,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1403681241] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:39:40,494 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:39:40,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 19:39:40,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554599774] [2022-11-16 19:39:40,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:39:40,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 19:39:40,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 19:39:40,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 19:39:40,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 19:39:40,496 INFO L87 Difference]: Start difference. First operand 831 states and 920 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 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) [2022-11-16 19:39:40,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:39:40,522 INFO L93 Difference]: Finished difference Result 800 states and 888 transitions. [2022-11-16 19:39:40,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 19:39:40,522 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 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 18 [2022-11-16 19:39:40,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:39:40,526 INFO L225 Difference]: With dead ends: 800 [2022-11-16 19:39:40,526 INFO L226 Difference]: Without dead ends: 800 [2022-11-16 19:39:40,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 19:39:40,530 INFO L413 NwaCegarLoop]: 805 mSDtfsCounter, 774 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 782 SdHoareTripleChecker+Valid, 837 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 19:39:40,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [782 Valid, 837 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 19:39:40,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2022-11-16 19:39:40,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 789. [2022-11-16 19:39:40,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 789 states, 458 states have (on average 1.8799126637554586) internal successors, (861), 783 states have internal predecessors, (861), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-16 19:39:40,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 877 transitions. [2022-11-16 19:39:40,552 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 877 transitions. Word has length 18 [2022-11-16 19:39:40,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:39:40,553 INFO L495 AbstractCegarLoop]: Abstraction has 789 states and 877 transitions. [2022-11-16 19:39:40,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 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) [2022-11-16 19:39:40,553 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 877 transitions. [2022-11-16 19:39:40,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-16 19:39:40,554 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:39:40,554 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:39:40,572 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-11-16 19:39:40,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 19:39:40,767 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-11-16 19:39:40,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:39:40,767 INFO L85 PathProgramCache]: Analyzing trace with hash -466544200, now seen corresponding path program 1 times [2022-11-16 19:39:40,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 19:39:40,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1051848696] [2022-11-16 19:39:40,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:39:40,768 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 19:39:40,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 19:39:40,769 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 19:39:40,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-16 19:39:40,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:39:40,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 19:39:40,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:39:40,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:39:40,957 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 19:39:40,957 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 19:39:40,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1051848696] [2022-11-16 19:39:40,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1051848696] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:39:40,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:39:40,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 19:39:40,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489559374] [2022-11-16 19:39:40,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:39:40,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 19:39:40,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 19:39:40,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 19:39:40,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 19:39:40,959 INFO L87 Difference]: Start difference. First operand 789 states and 877 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 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) [2022-11-16 19:39:41,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:39:41,034 INFO L93 Difference]: Finished difference Result 779 states and 860 transitions. [2022-11-16 19:39:41,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 19:39:41,034 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 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 20 [2022-11-16 19:39:41,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:39:41,037 INFO L225 Difference]: With dead ends: 779 [2022-11-16 19:39:41,037 INFO L226 Difference]: Without dead ends: 779 [2022-11-16 19:39:41,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 19:39:41,039 INFO L413 NwaCegarLoop]: 760 mSDtfsCounter, 755 mSDsluCounter, 785 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 763 SdHoareTripleChecker+Valid, 1545 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 19:39:41,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [763 Valid, 1545 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 19:39:41,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2022-11-16 19:39:41,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 767. [2022-11-16 19:39:41,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 767 states, 450 states have (on average 1.8488888888888888) internal successors, (832), 761 states have internal predecessors, (832), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-16 19:39:41,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 767 states to 767 states and 848 transitions. [2022-11-16 19:39:41,058 INFO L78 Accepts]: Start accepts. Automaton has 767 states and 848 transitions. Word has length 20 [2022-11-16 19:39:41,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:39:41,058 INFO L495 AbstractCegarLoop]: Abstraction has 767 states and 848 transitions. [2022-11-16 19:39:41,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 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) [2022-11-16 19:39:41,059 INFO L276 IsEmpty]: Start isEmpty. Operand 767 states and 848 transitions. [2022-11-16 19:39:41,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-16 19:39:41,060 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:39:41,060 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:39:41,076 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-16 19:39:41,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 19:39:41,276 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-11-16 19:39:41,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:39:41,276 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531686, now seen corresponding path program 1 times [2022-11-16 19:39:41,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 19:39:41,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1765420664] [2022-11-16 19:39:41,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:39:41,277 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 19:39:41,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 19:39:41,278 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 19:39:41,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-16 19:39:41,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:39:41,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 19:39:41,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:39:41,488 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 19:39:41,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:39:41,581 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 19:39:41,581 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 19:39:41,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1765420664] [2022-11-16 19:39:41,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1765420664] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:39:41,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:39:41,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 19:39:41,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175053282] [2022-11-16 19:39:41,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:39:41,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 19:39:41,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 19:39:41,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 19:39:41,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 19:39:41,584 INFO L87 Difference]: Start difference. First operand 767 states and 848 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:39:43,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:39:43,549 INFO L93 Difference]: Finished difference Result 997 states and 1109 transitions. [2022-11-16 19:39:43,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 19:39:43,550 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 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 34 [2022-11-16 19:39:43,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:39:43,554 INFO L225 Difference]: With dead ends: 997 [2022-11-16 19:39:43,554 INFO L226 Difference]: Without dead ends: 997 [2022-11-16 19:39:43,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 19:39:43,555 INFO L413 NwaCegarLoop]: 409 mSDtfsCounter, 1353 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 641 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1353 SdHoareTripleChecker+Valid, 779 SdHoareTripleChecker+Invalid, 670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-16 19:39:43,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1353 Valid, 779 Invalid, 670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 641 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-16 19:39:43,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2022-11-16 19:39:43,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 763. [2022-11-16 19:39:43,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 763 states, 450 states have (on average 1.84) internal successors, (828), 757 states have internal predecessors, (828), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-16 19:39:43,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 763 states to 763 states and 844 transitions. [2022-11-16 19:39:43,573 INFO L78 Accepts]: Start accepts. Automaton has 763 states and 844 transitions. Word has length 34 [2022-11-16 19:39:43,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:39:43,573 INFO L495 AbstractCegarLoop]: Abstraction has 763 states and 844 transitions. [2022-11-16 19:39:43,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:39:43,574 INFO L276 IsEmpty]: Start isEmpty. Operand 763 states and 844 transitions. [2022-11-16 19:39:43,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-16 19:39:43,574 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:39:43,575 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:39:43,587 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-16 19:39:43,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 19:39:43,787 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-11-16 19:39:43,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:39:43,787 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531687, now seen corresponding path program 1 times [2022-11-16 19:39:43,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 19:39:43,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1110494750] [2022-11-16 19:39:43,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:39:43,788 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 19:39:43,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 19:39:43,789 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 19:39:43,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-16 19:39:43,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:39:43,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 19:39:43,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:39:43,995 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 19:39:44,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:39:44,168 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 19:39:44,168 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 19:39:44,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1110494750] [2022-11-16 19:39:44,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1110494750] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:39:44,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:39:44,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 19:39:44,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530723214] [2022-11-16 19:39:44,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:39:44,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 19:39:44,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 19:39:44,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 19:39:44,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 19:39:44,170 INFO L87 Difference]: Start difference. First operand 763 states and 844 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:39:47,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:39:47,057 INFO L93 Difference]: Finished difference Result 1038 states and 1118 transitions. [2022-11-16 19:39:47,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 19:39:47,058 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 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 34 [2022-11-16 19:39:47,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:39:47,061 INFO L225 Difference]: With dead ends: 1038 [2022-11-16 19:39:47,062 INFO L226 Difference]: Without dead ends: 1038 [2022-11-16 19:39:47,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 19:39:47,063 INFO L413 NwaCegarLoop]: 602 mSDtfsCounter, 806 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 844 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 806 SdHoareTripleChecker+Valid, 1274 SdHoareTripleChecker+Invalid, 858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-16 19:39:47,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [806 Valid, 1274 Invalid, 858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 844 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-16 19:39:47,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2022-11-16 19:39:47,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 759. [2022-11-16 19:39:47,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 759 states, 450 states have (on average 1.8311111111111111) internal successors, (824), 753 states have internal predecessors, (824), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-16 19:39:47,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 840 transitions. [2022-11-16 19:39:47,094 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 840 transitions. Word has length 34 [2022-11-16 19:39:47,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:39:47,096 INFO L495 AbstractCegarLoop]: Abstraction has 759 states and 840 transitions. [2022-11-16 19:39:47,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:39:47,097 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 840 transitions. [2022-11-16 19:39:47,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-16 19:39:47,102 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:39:47,103 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:39:47,119 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-16 19:39:47,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 19:39:47,314 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr117REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-11-16 19:39:47,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:39:47,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1723497600, now seen corresponding path program 1 times [2022-11-16 19:39:47,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 19:39:47,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [225884021] [2022-11-16 19:39:47,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:39:47,316 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 [2022-11-16 19:39:47,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 19:39:47,317 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 19:39:47,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-16 19:39:47,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:39:47,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 19:39:47,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:39:47,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:39:47,586 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 19:39:47,586 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 19:39:47,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [225884021] [2022-11-16 19:39:47,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [225884021] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:39:47,586 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:39:47,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 19:39:47,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880230423] [2022-11-16 19:39:47,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:39:47,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 19:39:47,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 19:39:47,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 19:39:47,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 19:39:47,588 INFO L87 Difference]: Start difference. First operand 759 states and 840 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:39:47,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:39:47,643 INFO L93 Difference]: Finished difference Result 764 states and 841 transitions. [2022-11-16 19:39:47,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 19:39:47,644 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 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 49 [2022-11-16 19:39:47,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:39:47,646 INFO L225 Difference]: With dead ends: 764 [2022-11-16 19:39:47,646 INFO L226 Difference]: Without dead ends: 764 [2022-11-16 19:39:47,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 19:39:47,647 INFO L413 NwaCegarLoop]: 754 mSDtfsCounter, 724 mSDsluCounter, 769 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 732 SdHoareTripleChecker+Valid, 1523 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 19:39:47,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [732 Valid, 1523 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 19:39:47,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2022-11-16 19:39:47,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 753. [2022-11-16 19:39:47,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 444 states have (on average 1.8333333333333333) internal successors, (814), 747 states have internal predecessors, (814), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-16 19:39:47,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 830 transitions. [2022-11-16 19:39:47,660 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 830 transitions. Word has length 49 [2022-11-16 19:39:47,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:39:47,660 INFO L495 AbstractCegarLoop]: Abstraction has 753 states and 830 transitions. [2022-11-16 19:39:47,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:39:47,661 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 830 transitions. [2022-11-16 19:39:47,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-16 19:39:47,662 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:39:47,662 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:39:47,682 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-16 19:39:47,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 19:39:47,876 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr117REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-11-16 19:39:47,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:39:47,876 INFO L85 PathProgramCache]: Analyzing trace with hash 2061892788, now seen corresponding path program 1 times [2022-11-16 19:39:47,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 19:39:47,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1240761106] [2022-11-16 19:39:47,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:39:47,878 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 19:39:47,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 19:39:47,879 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 19:39:47,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-16 19:39:48,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:39:48,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 19:39:48,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:39:48,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:39:48,414 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 19:39:48,414 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 19:39:48,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1240761106] [2022-11-16 19:39:48,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1240761106] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:39:48,415 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:39:48,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 19:39:48,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618597974] [2022-11-16 19:39:48,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:39:48,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 19:39:48,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 19:39:48,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 19:39:48,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 19:39:48,416 INFO L87 Difference]: Start difference. First operand 753 states and 830 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:39:48,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:39:48,535 INFO L93 Difference]: Finished difference Result 955 states and 1054 transitions. [2022-11-16 19:39:48,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 19:39:48,537 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-11-16 19:39:48,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:39:48,541 INFO L225 Difference]: With dead ends: 955 [2022-11-16 19:39:48,541 INFO L226 Difference]: Without dead ends: 955 [2022-11-16 19:39:48,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 19:39:48,542 INFO L413 NwaCegarLoop]: 896 mSDtfsCounter, 229 mSDsluCounter, 643 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 1539 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 19:39:48,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 1539 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 19:39:48,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 955 states. [2022-11-16 19:39:48,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 955 to 900. [2022-11-16 19:39:48,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 900 states, 586 states have (on average 1.7491467576791808) internal successors, (1025), 894 states have internal predecessors, (1025), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-16 19:39:48,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 900 states to 900 states and 1051 transitions. [2022-11-16 19:39:48,557 INFO L78 Accepts]: Start accepts. Automaton has 900 states and 1051 transitions. Word has length 57 [2022-11-16 19:39:48,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:39:48,558 INFO L495 AbstractCegarLoop]: Abstraction has 900 states and 1051 transitions. [2022-11-16 19:39:48,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:39:48,558 INFO L276 IsEmpty]: Start isEmpty. Operand 900 states and 1051 transitions. [2022-11-16 19:39:48,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-16 19:39:48,559 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:39:48,559 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:39:48,578 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2022-11-16 19:39:48,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 19:39:48,773 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-11-16 19:39:48,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:39:48,774 INFO L85 PathProgramCache]: Analyzing trace with hash -881686959, now seen corresponding path program 1 times [2022-11-16 19:39:48,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 19:39:48,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [3396536] [2022-11-16 19:39:48,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:39:48,774 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 19:39:48,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 19:39:48,775 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 19:39:48,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-16 19:39:49,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:39:49,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 19:39:49,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:39:49,099 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 19:39:49,104 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 19:39:49,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:39:49,610 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-16 19:39:49,632 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-16 19:39:49,632 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-16 19:39:49,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:39:49,649 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 19:39:49,649 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 19:39:49,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [3396536] [2022-11-16 19:39:49,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [3396536] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:39:49,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:39:49,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 19:39:49,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127304519] [2022-11-16 19:39:49,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:39:49,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 19:39:49,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 19:39:49,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 19:39:49,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 19:39:49,653 INFO L87 Difference]: Start difference. First operand 900 states and 1051 transitions. Second operand has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:39:51,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:39:51,854 INFO L93 Difference]: Finished difference Result 1181 states and 1437 transitions. [2022-11-16 19:39:51,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 19:39:51,854 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 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 60 [2022-11-16 19:39:51,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:39:51,858 INFO L225 Difference]: With dead ends: 1181 [2022-11-16 19:39:51,858 INFO L226 Difference]: Without dead ends: 1181 [2022-11-16 19:39:51,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 19:39:51,859 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 1557 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 613 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1570 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-16 19:39:51,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1570 Valid, 394 Invalid, 667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 613 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-16 19:39:51,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1181 states. [2022-11-16 19:39:51,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1181 to 830. [2022-11-16 19:39:51,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 830 states, 554 states have (on average 1.6624548736462095) internal successors, (921), 824 states have internal predecessors, (921), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-16 19:39:51,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 947 transitions. [2022-11-16 19:39:51,876 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 947 transitions. Word has length 60 [2022-11-16 19:39:51,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:39:51,876 INFO L495 AbstractCegarLoop]: Abstraction has 830 states and 947 transitions. [2022-11-16 19:39:51,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 20.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:39:51,877 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 947 transitions. [2022-11-16 19:39:51,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-16 19:39:51,877 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:39:51,878 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:39:51,893 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/mathsat -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 [2022-11-16 19:39:52,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 19:39:52,093 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-11-16 19:39:52,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:39:52,093 INFO L85 PathProgramCache]: Analyzing trace with hash -855470841, now seen corresponding path program 1 times [2022-11-16 19:39:52,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 19:39:52,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1958628775] [2022-11-16 19:39:52,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:39:52,094 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 19:39:52,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 19:39:52,096 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 19:39:52,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-16 19:39:52,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:39:52,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 19:39:52,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:39:52,377 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-16 19:39:52,397 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 19:39:52,423 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2022-11-16 19:39:52,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:39:52,432 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 19:39:52,432 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 19:39:52,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1958628775] [2022-11-16 19:39:52,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1958628775] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:39:52,433 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:39:52,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 19:39:52,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852458099] [2022-11-16 19:39:52,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:39:52,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 19:39:52,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 19:39:52,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 19:39:52,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 19:39:52,434 INFO L87 Difference]: Start difference. First operand 830 states and 947 transitions. Second operand has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:39:54,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:39:54,574 INFO L93 Difference]: Finished difference Result 829 states and 946 transitions. [2022-11-16 19:39:54,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 19:39:54,575 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 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 65 [2022-11-16 19:39:54,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:39:54,577 INFO L225 Difference]: With dead ends: 829 [2022-11-16 19:39:54,577 INFO L226 Difference]: Without dead ends: 829 [2022-11-16 19:39:54,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-16 19:39:54,578 INFO L413 NwaCegarLoop]: 714 mSDtfsCounter, 4 mSDsluCounter, 1147 mSDsCounter, 0 mSdLazyCounter, 1000 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1861 SdHoareTripleChecker+Invalid, 1001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-16 19:39:54,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1861 Invalid, 1001 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1000 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-16 19:39:54,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2022-11-16 19:39:54,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 829. [2022-11-16 19:39:54,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 829 states, 554 states have (on average 1.660649819494585) internal successors, (920), 823 states have internal predecessors, (920), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-16 19:39:54,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 829 states to 829 states and 946 transitions. [2022-11-16 19:39:54,591 INFO L78 Accepts]: Start accepts. Automaton has 829 states and 946 transitions. Word has length 65 [2022-11-16 19:39:54,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:39:54,592 INFO L495 AbstractCegarLoop]: Abstraction has 829 states and 946 transitions. [2022-11-16 19:39:54,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:39:54,592 INFO L276 IsEmpty]: Start isEmpty. Operand 829 states and 946 transitions. [2022-11-16 19:39:54,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-16 19:39:54,593 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:39:54,593 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:39:54,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-16 19:39:54,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 19:39:54,808 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr77REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-11-16 19:39:54,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:39:54,808 INFO L85 PathProgramCache]: Analyzing trace with hash -855470840, now seen corresponding path program 1 times [2022-11-16 19:39:54,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 19:39:54,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [310368325] [2022-11-16 19:39:54,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:39:54,809 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 19:39:54,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 19:39:54,811 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 19:39:54,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-16 19:39:55,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:39:55,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-16 19:39:55,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:39:55,137 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-16 19:39:55,168 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 19:39:55,175 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-16 19:39:55,223 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2022-11-16 19:39:55,229 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-16 19:39:55,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:39:55,246 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 19:39:55,246 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 19:39:55,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [310368325] [2022-11-16 19:39:55,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [310368325] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:39:55,246 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:39:55,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 19:39:55,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447869849] [2022-11-16 19:39:55,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:39:55,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 19:39:55,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 19:39:55,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 19:39:55,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 19:39:55,248 INFO L87 Difference]: Start difference. First operand 829 states and 946 transitions. Second operand has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:39:58,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:39:58,049 INFO L93 Difference]: Finished difference Result 828 states and 945 transitions. [2022-11-16 19:39:58,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 19:39:58,050 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 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 65 [2022-11-16 19:39:58,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:39:58,052 INFO L225 Difference]: With dead ends: 828 [2022-11-16 19:39:58,052 INFO L226 Difference]: Without dead ends: 828 [2022-11-16 19:39:58,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-16 19:39:58,052 INFO L413 NwaCegarLoop]: 714 mSDtfsCounter, 2 mSDsluCounter, 1167 mSDsCounter, 0 mSdLazyCounter, 978 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1881 SdHoareTripleChecker+Invalid, 979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-16 19:39:58,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1881 Invalid, 979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 978 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-16 19:39:58,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2022-11-16 19:39:58,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 828. [2022-11-16 19:39:58,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 828 states, 553 states have (on average 1.6618444846292948) internal successors, (919), 822 states have internal predecessors, (919), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-16 19:39:58,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 828 states to 828 states and 945 transitions. [2022-11-16 19:39:58,085 INFO L78 Accepts]: Start accepts. Automaton has 828 states and 945 transitions. Word has length 65 [2022-11-16 19:39:58,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:39:58,086 INFO L495 AbstractCegarLoop]: Abstraction has 828 states and 945 transitions. [2022-11-16 19:39:58,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.25) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 19:39:58,087 INFO L276 IsEmpty]: Start isEmpty. Operand 828 states and 945 transitions. [2022-11-16 19:39:58,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-16 19:39:58,088 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:39:58,088 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:39:58,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-16 19:39:58,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 19:39:58,302 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-11-16 19:39:58,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:39:58,303 INFO L85 PathProgramCache]: Analyzing trace with hash -561441905, now seen corresponding path program 1 times [2022-11-16 19:39:58,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 19:39:58,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [765751414] [2022-11-16 19:39:58,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:39:58,304 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 19:39:58,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 19:39:58,305 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 19:39:58,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-16 19:39:58,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:39:58,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 19:39:58,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:39:58,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:39:58,623 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 19:39:58,623 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 19:39:58,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [765751414] [2022-11-16 19:39:58,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [765751414] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:39:58,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:39:58,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 19:39:58,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093849064] [2022-11-16 19:39:58,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:39:58,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 19:39:58,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 19:39:58,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 19:39:58,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 19:39:58,625 INFO L87 Difference]: Start difference. First operand 828 states and 945 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 19:39:58,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:39:58,668 INFO L93 Difference]: Finished difference Result 831 states and 949 transitions. [2022-11-16 19:39:58,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 19:39:58,669 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 73 [2022-11-16 19:39:58,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:39:58,672 INFO L225 Difference]: With dead ends: 831 [2022-11-16 19:39:58,672 INFO L226 Difference]: Without dead ends: 831 [2022-11-16 19:39:58,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 19:39:58,673 INFO L413 NwaCegarLoop]: 714 mSDtfsCounter, 2 mSDsluCounter, 1423 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2137 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 19:39:58,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2137 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 19:39:58,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 831 states. [2022-11-16 19:39:58,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 831 to 831. [2022-11-16 19:39:58,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 831 states, 555 states have (on average 1.6612612612612612) internal successors, (922), 825 states have internal predecessors, (922), 13 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (14), 5 states have call predecessors, (14), 13 states have call successors, (14) [2022-11-16 19:39:58,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 831 states to 831 states and 949 transitions. [2022-11-16 19:39:58,689 INFO L78 Accepts]: Start accepts. Automaton has 831 states and 949 transitions. Word has length 73 [2022-11-16 19:39:58,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:39:58,690 INFO L495 AbstractCegarLoop]: Abstraction has 831 states and 949 transitions. [2022-11-16 19:39:58,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 19:39:58,690 INFO L276 IsEmpty]: Start isEmpty. Operand 831 states and 949 transitions. [2022-11-16 19:39:58,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-16 19:39:58,691 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:39:58,691 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:39:58,710 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-16 19:39:58,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 19:39:58,906 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-11-16 19:39:58,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:39:58,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1006162070, now seen corresponding path program 1 times [2022-11-16 19:39:58,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 19:39:58,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1735284388] [2022-11-16 19:39:58,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:39:58,907 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 19:39:58,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 19:39:58,908 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 19:39:58,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-16 19:39:59,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:39:59,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 19:39:59,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:39:59,242 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:39:59,242 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:39:59,332 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:39:59,333 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 19:39:59,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1735284388] [2022-11-16 19:39:59,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1735284388] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:39:59,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1287718856] [2022-11-16 19:39:59,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:39:59,334 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 19:39:59,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/cvc4 [2022-11-16 19:39:59,340 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 19:39:59,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2022-11-16 19:39:59,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:39:59,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 19:39:59,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:39:59,962 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:39:59,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:40:00,010 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:40:00,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1287718856] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:40:00,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361035309] [2022-11-16 19:40:00,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:40:00,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:40:00,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:40:00,018 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:40:00,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-16 19:40:00,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:40:00,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 19:40:00,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:40:00,346 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:40:00,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:40:00,390 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:40:00,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1361035309] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:40:00,391 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-16 19:40:00,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2022-11-16 19:40:00,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677729784] [2022-11-16 19:40:00,394 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-16 19:40:00,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 19:40:00,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 19:40:00,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 19:40:00,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-16 19:40:00,396 INFO L87 Difference]: Start difference. First operand 831 states and 949 transitions. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-16 19:40:00,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:40:00,599 INFO L93 Difference]: Finished difference Result 843 states and 966 transitions. [2022-11-16 19:40:00,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 19:40:00,600 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 74 [2022-11-16 19:40:00,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:40:00,603 INFO L225 Difference]: With dead ends: 843 [2022-11-16 19:40:00,603 INFO L226 Difference]: Without dead ends: 843 [2022-11-16 19:40:00,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 443 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2022-11-16 19:40:00,604 INFO L413 NwaCegarLoop]: 715 mSDtfsCounter, 19 mSDsluCounter, 2842 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 3557 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 19:40:00,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 3557 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 19:40:00,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2022-11-16 19:40:00,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 841. [2022-11-16 19:40:00,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 841 states, 564 states have (on average 1.6613475177304964) internal successors, (937), 834 states have internal predecessors, (937), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 5 states have call predecessors, (14), 13 states have call successors, (14) [2022-11-16 19:40:00,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 964 transitions. [2022-11-16 19:40:00,618 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 964 transitions. Word has length 74 [2022-11-16 19:40:00,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:40:00,618 INFO L495 AbstractCegarLoop]: Abstraction has 841 states and 964 transitions. [2022-11-16 19:40:00,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-16 19:40:00,618 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 964 transitions. [2022-11-16 19:40:00,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-16 19:40:00,619 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:40:00,619 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:40:00,646 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/mathsat -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 [2022-11-16 19:40:00,838 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (19)] Ended with exit code 0 [2022-11-16 19:40:01,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-16 19:40:01,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/mathsat -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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:40:01,234 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-11-16 19:40:01,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:40:01,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1693213361, now seen corresponding path program 2 times [2022-11-16 19:40:01,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 19:40:01,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1339812558] [2022-11-16 19:40:01,236 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 19:40:01,236 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 19:40:01,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 19:40:01,237 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 19:40:01,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-16 19:40:01,711 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 19:40:01,711 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 19:40:01,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 19:40:01,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:40:01,780 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:40:01,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:40:01,992 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:40:01,993 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 19:40:01,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1339812558] [2022-11-16 19:40:01,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1339812558] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:40:01,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [52264916] [2022-11-16 19:40:01,993 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 19:40:01,993 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 19:40:01,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/cvc4 [2022-11-16 19:40:01,998 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 19:40:02,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2022-11-16 19:40:03,382 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 19:40:03,382 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 19:40:03,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 19:40:03,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:40:03,434 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:40:03,434 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:40:03,508 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:40:03,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [52264916] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:40:03,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378333241] [2022-11-16 19:40:03,508 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 19:40:03,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:40:03,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:40:03,515 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:40:03,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-16 19:40:25,604 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 19:40:25,604 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 19:40:25,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 19:40:25,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:40:25,718 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:40:25,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:40:25,992 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:40:25,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1378333241] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:40:25,992 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-16 19:40:25,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 20 [2022-11-16 19:40:25,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980569996] [2022-11-16 19:40:25,993 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-16 19:40:25,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 19:40:25,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 19:40:25,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 19:40:25,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=248, Unknown=0, NotChecked=0, Total=380 [2022-11-16 19:40:25,995 INFO L87 Difference]: Start difference. First operand 841 states and 964 transitions. Second operand has 20 states, 20 states have (on average 4.5) internal successors, (90), 20 states have internal predecessors, (90), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 19:40:26,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:40:26,904 INFO L93 Difference]: Finished difference Result 862 states and 991 transitions. [2022-11-16 19:40:26,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-16 19:40:26,905 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.5) internal successors, (90), 20 states have internal predecessors, (90), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 77 [2022-11-16 19:40:26,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:40:26,908 INFO L225 Difference]: With dead ends: 862 [2022-11-16 19:40:26,908 INFO L226 Difference]: Without dead ends: 856 [2022-11-16 19:40:26,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 471 GetRequests, 438 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=416, Invalid=774, Unknown=0, NotChecked=0, Total=1190 [2022-11-16 19:40:26,909 INFO L413 NwaCegarLoop]: 717 mSDtfsCounter, 86 mSDsluCounter, 4279 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 4996 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 19:40:26,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 4996 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 19:40:26,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 856 states. [2022-11-16 19:40:26,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 856 to 850. [2022-11-16 19:40:26,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 573 states have (on average 1.6544502617801047) internal successors, (948), 843 states have internal predecessors, (948), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 5 states have call predecessors, (14), 13 states have call successors, (14) [2022-11-16 19:40:26,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 975 transitions. [2022-11-16 19:40:26,923 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 975 transitions. Word has length 77 [2022-11-16 19:40:26,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:40:26,923 INFO L495 AbstractCegarLoop]: Abstraction has 850 states and 975 transitions. [2022-11-16 19:40:26,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.5) internal successors, (90), 20 states have internal predecessors, (90), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 19:40:26,924 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 975 transitions. [2022-11-16 19:40:26,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-16 19:40:26,924 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:40:26,925 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:40:26,932 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2022-11-16 19:40:27,150 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-16 19:40:27,342 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-16 19:40:27,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 19:40:27,532 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 428 more)] === [2022-11-16 19:40:27,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:40:27,533 INFO L85 PathProgramCache]: Analyzing trace with hash -537131025, now seen corresponding path program 3 times [2022-11-16 19:40:27,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 19:40:27,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1192026626] [2022-11-16 19:40:27,534 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 19:40:27,534 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 19:40:27,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 19:40:27,535 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 19:40:27,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/mathsat -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 [2022-11-16 19:40:28,223 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-16 19:40:28,224 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 19:40:28,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-16 19:40:28,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:40:28,389 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:40:28,389 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:40:29,275 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:40:29,276 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 19:40:29,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1192026626] [2022-11-16 19:40:29,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1192026626] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:40:29,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [153715571] [2022-11-16 19:40:29,276 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 19:40:29,276 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 19:40:29,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/cvc4 [2022-11-16 19:40:29,278 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 19:40:29,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2022-11-16 19:40:33,692 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-16 19:40:33,693 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 19:40:33,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-16 19:40:33,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:40:33,791 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:40:33,791 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:40:34,042 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:40:34,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [153715571] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:40:34,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531594502] [2022-11-16 19:40:34,043 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 19:40:34,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:40:34,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:40:34,047 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:40:34,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9406e99e-d1a3-490b-9557-1cffdcdecfba/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process