./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 32a779d95d64b7b3ae1a801430dde2c7d15b3372c5d0cdd47679441a42687631 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 06:41:37,449 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 06:41:37,451 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 06:41:37,468 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 06:41:37,468 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 06:41:37,469 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 06:41:37,470 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 06:41:37,472 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 06:41:37,473 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 06:41:37,474 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 06:41:37,475 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 06:41:37,475 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 06:41:37,476 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 06:41:37,477 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 06:41:37,478 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 06:41:37,479 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 06:41:37,479 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 06:41:37,480 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 06:41:37,481 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 06:41:37,483 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 06:41:37,484 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 06:41:37,485 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 06:41:37,486 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 06:41:37,502 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 06:41:37,506 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 06:41:37,506 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 06:41:37,507 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 06:41:37,508 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 06:41:37,508 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 06:41:37,509 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 06:41:37,509 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 06:41:37,510 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 06:41:37,511 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 06:41:37,512 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 06:41:37,513 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 06:41:37,513 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 06:41:37,514 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 06:41:37,514 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 06:41:37,514 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 06:41:37,515 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 06:41:37,515 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 06:41:37,516 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2022-12-14 06:41:37,539 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 06:41:37,539 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 06:41:37,539 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 06:41:37,539 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 06:41:37,540 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 06:41:37,540 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 06:41:37,540 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 06:41:37,541 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 06:41:37,541 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 06:41:37,541 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 06:41:37,541 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 06:41:37,541 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 06:41:37,541 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 06:41:37,542 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 06:41:37,542 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 06:41:37,542 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 06:41:37,542 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 06:41:37,542 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 06:41:37,543 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-14 06:41:37,543 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-14 06:41:37,544 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 06:41:37,544 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 06:41:37,544 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 06:41:37,544 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 06:41:37,544 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 06:41:37,544 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 06:41:37,545 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-14 06:41:37,545 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-14 06:41:37,545 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-14 06:41:37,545 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 06:41:37,545 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 06:41:37,545 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 06:41:37,546 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 06:41:37,546 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 06:41:37,546 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 06:41:37,546 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 06:41:37,546 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 06:41:37,547 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 06:41:37,547 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 06:41:37,547 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 06:41:37,547 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 06:41:37,547 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 06:41:37,547 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_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 32a779d95d64b7b3ae1a801430dde2c7d15b3372c5d0cdd47679441a42687631 [2022-12-14 06:41:37,747 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 06:41:37,765 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 06:41:37,767 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 06:41:37,768 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 06:41:37,768 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 06:41:37,769 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-2.i [2022-12-14 06:41:40,413 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 06:41:40,623 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 06:41:40,624 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-2.i [2022-12-14 06:41:40,634 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/data/e495e46a3/35870b1dc7634bb382a36203ccbcfc7d/FLAGba32152cc [2022-12-14 06:41:40,645 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/data/e495e46a3/35870b1dc7634bb382a36203ccbcfc7d [2022-12-14 06:41:40,647 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 06:41:40,648 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 06:41:40,649 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 06:41:40,649 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 06:41:40,652 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 06:41:40,653 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:41:40" (1/1) ... [2022-12-14 06:41:40,654 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ab2ae5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:41:40, skipping insertion in model container [2022-12-14 06:41:40,654 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:41:40" (1/1) ... [2022-12-14 06:41:40,660 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 06:41:40,697 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 06:41:41,007 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-2.i[33021,33034] [2022-12-14 06:41:41,086 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 06:41:41,096 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-2.i[44590,44603] [2022-12-14 06:41:41,115 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 06:41:41,124 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2022-12-14 06:41:41,124 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@598ab1ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:41:41, skipping insertion in model container [2022-12-14 06:41:41,124 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 06:41:41,125 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-12-14 06:41:41,126 INFO L158 Benchmark]: Toolchain (without parser) took 477.15ms. Allocated memory is still 113.2MB. Free memory was 76.8MB in the beginning and 56.6MB in the end (delta: 20.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-12-14 06:41:41,126 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 113.2MB. Free memory is still 78.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 06:41:41,127 INFO L158 Benchmark]: CACSL2BoogieTranslator took 475.43ms. Allocated memory is still 113.2MB. Free memory was 76.5MB in the beginning and 56.6MB in the end (delta: 19.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-12-14 06:41:41,128 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 113.2MB. Free memory is still 78.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 475.43ms. Allocated memory is still 113.2MB. Free memory was 76.5MB in the beginning and 56.6MB in the end (delta: 19.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 736]: 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_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 32a779d95d64b7b3ae1a801430dde2c7d15b3372c5d0cdd47679441a42687631 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 06:41:42,603 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 06:41:42,604 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 06:41:42,617 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 06:41:42,618 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 06:41:42,618 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 06:41:42,619 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 06:41:42,620 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 06:41:42,621 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 06:41:42,622 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 06:41:42,622 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 06:41:42,623 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 06:41:42,623 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 06:41:42,624 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 06:41:42,625 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 06:41:42,625 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 06:41:42,626 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 06:41:42,627 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 06:41:42,628 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 06:41:42,629 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 06:41:42,630 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 06:41:42,631 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 06:41:42,631 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 06:41:42,632 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 06:41:42,634 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 06:41:42,634 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 06:41:42,635 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 06:41:42,635 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 06:41:42,635 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 06:41:42,636 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 06:41:42,636 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 06:41:42,637 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 06:41:42,643 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 06:41:42,645 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 06:41:42,646 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 06:41:42,647 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 06:41:42,647 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 06:41:42,648 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 06:41:42,648 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 06:41:42,649 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 06:41:42,649 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 06:41:42,650 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2022-12-14 06:41:42,666 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 06:41:42,666 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 06:41:42,667 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 06:41:42,667 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 06:41:42,667 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 06:41:42,667 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 06:41:42,667 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 06:41:42,667 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 06:41:42,668 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 06:41:42,668 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 06:41:42,668 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 06:41:42,668 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 06:41:42,668 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-14 06:41:42,668 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-14 06:41:42,669 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 06:41:42,669 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 06:41:42,669 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-14 06:41:42,669 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 06:41:42,669 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 06:41:42,669 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 06:41:42,669 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-14 06:41:42,669 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-14 06:41:42,669 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-14 06:41:42,669 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 06:41:42,669 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 06:41:42,670 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 06:41:42,670 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 06:41:42,670 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 06:41:42,670 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 06:41:42,670 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 06:41:42,670 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 06:41:42,670 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 06:41:42,670 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 06:41:42,670 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 06:41:42,670 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 06:41:42,671 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 06:41:42,671 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 06:41:42,671 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 06:41:42,671 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 06:41:42,671 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_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 32a779d95d64b7b3ae1a801430dde2c7d15b3372c5d0cdd47679441a42687631 [2022-12-14 06:41:42,915 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 06:41:42,932 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 06:41:42,934 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 06:41:42,935 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 06:41:42,935 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 06:41:42,936 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-2.i [2022-12-14 06:41:45,483 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 06:41:45,695 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 06:41:45,695 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-2.i [2022-12-14 06:41:45,706 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/data/b76ae8fed/5a910c9390d041f6bec6fd9f24c8e8c2/FLAGd952dd610 [2022-12-14 06:41:45,718 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/data/b76ae8fed/5a910c9390d041f6bec6fd9f24c8e8c2 [2022-12-14 06:41:45,720 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 06:41:45,721 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 06:41:45,721 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 06:41:45,722 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 06:41:45,724 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 06:41:45,725 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:41:45" (1/1) ... [2022-12-14 06:41:45,726 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@258c0a3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:41:45, skipping insertion in model container [2022-12-14 06:41:45,726 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:41:45" (1/1) ... [2022-12-14 06:41:45,731 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 06:41:45,770 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 06:41:46,045 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-2.i[33021,33034] [2022-12-14 06:41:46,119 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 06:41:46,135 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-2.i[44590,44603] [2022-12-14 06:41:46,152 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 06:41:46,165 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-12-14 06:41:46,196 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 06:41:46,213 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-2.i[33021,33034] [2022-12-14 06:41:46,251 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 06:41:46,257 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-2.i[44590,44603] [2022-12-14 06:41:46,264 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 06:41:46,268 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 06:41:46,293 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-2.i[33021,33034] [2022-12-14 06:41:46,333 WARN L623 FunctionHandler]: Unknown extern function memcmp [2022-12-14 06:41:46,338 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test3-2.i[44590,44603] [2022-12-14 06:41:46,344 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 06:41:46,368 INFO L208 MainTranslator]: Completed translation [2022-12-14 06:41:46,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:41:46 WrapperNode [2022-12-14 06:41:46,369 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 06:41:46,369 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 06:41:46,369 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 06:41:46,370 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 06:41:46,375 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:41:46" (1/1) ... [2022-12-14 06:41:46,396 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:41:46" (1/1) ... [2022-12-14 06:41:46,433 INFO L138 Inliner]: procedures = 180, calls = 336, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1201 [2022-12-14 06:41:46,433 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 06:41:46,434 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 06:41:46,434 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 06:41:46,434 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 06:41:46,441 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:41:46" (1/1) ... [2022-12-14 06:41:46,441 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:41:46" (1/1) ... [2022-12-14 06:41:46,448 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:41:46" (1/1) ... [2022-12-14 06:41:46,449 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:41:46" (1/1) ... [2022-12-14 06:41:46,475 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:41:46" (1/1) ... [2022-12-14 06:41:46,482 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:41:46" (1/1) ... [2022-12-14 06:41:46,485 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:41:46" (1/1) ... [2022-12-14 06:41:46,489 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:41:46" (1/1) ... [2022-12-14 06:41:46,495 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 06:41:46,496 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 06:41:46,496 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 06:41:46,496 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 06:41:46,497 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:41:46" (1/1) ... [2022-12-14 06:41:46,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 06:41:46,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:41:46,522 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 06:41:46,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 06:41:46,559 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-12-14 06:41:46,559 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-12-14 06:41:46,559 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-14 06:41:46,559 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-14 06:41:46,560 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-12-14 06:41:46,560 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-12-14 06:41:46,560 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-14 06:41:46,560 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 06:41:46,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-14 06:41:46,560 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 06:41:46,560 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-12-14 06:41:46,561 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-14 06:41:46,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 06:41:46,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-12-14 06:41:46,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-14 06:41:46,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 06:41:46,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 06:41:46,733 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 06:41:46,735 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 06:41:46,739 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-12-14 06:41:50,513 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 06:41:50,522 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 06:41:50,522 INFO L300 CfgBuilder]: Removed 72 assume(true) statements. [2022-12-14 06:41:50,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:41:50 BoogieIcfgContainer [2022-12-14 06:41:50,525 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 06:41:50,526 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 06:41:50,526 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 06:41:50,528 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 06:41:50,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 06:41:45" (1/3) ... [2022-12-14 06:41:50,529 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@603865f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:41:50, skipping insertion in model container [2022-12-14 06:41:50,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:41:46" (2/3) ... [2022-12-14 06:41:50,529 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@603865f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:41:50, skipping insertion in model container [2022-12-14 06:41:50,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:41:50" (3/3) ... [2022-12-14 06:41:50,530 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_BER_test3-2.i [2022-12-14 06:41:50,543 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 06:41:50,543 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 639 error locations. [2022-12-14 06:41:50,601 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 06:41:50,606 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;@681bc1f5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 06:41:50,607 INFO L358 AbstractCegarLoop]: Starting to check reachability of 639 error locations. [2022-12-14 06:41:50,612 INFO L276 IsEmpty]: Start isEmpty. Operand has 1270 states, 623 states have (on average 2.258426966292135) internal successors, (1407), 1264 states have internal predecessors, (1407), 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) [2022-12-14 06:41:50,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-14 06:41:50,617 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:41:50,617 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-14 06:41:50,617 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 636 more)] === [2022-12-14 06:41:50,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:41:50,622 INFO L85 PathProgramCache]: Analyzing trace with hash 38794, now seen corresponding path program 1 times [2022-12-14 06:41:50,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 06:41:50,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [504653537] [2022-12-14 06:41:50,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:41:50,631 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:41:50,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 06:41:50,632 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 06:41:50,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-12-14 06:41:50,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:41:50,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 06:41:50,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:41:50,797 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-14 06:41:50,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:41:50,810 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 06:41:50,811 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 06:41:50,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [504653537] [2022-12-14 06:41:50,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [504653537] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:41:50,812 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:41:50,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 06:41:50,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861753314] [2022-12-14 06:41:50,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:41:50,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:41:50,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 06:41:50,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:41:50,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:41:50,853 INFO L87 Difference]: Start difference. First operand has 1270 states, 623 states have (on average 2.258426966292135) internal successors, (1407), 1264 states have internal predecessors, (1407), 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) [2022-12-14 06:41:52,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:41:52,622 INFO L93 Difference]: Finished difference Result 1442 states and 1526 transitions. [2022-12-14 06:41:52,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:41:52,624 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-12-14 06:41:52,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:41:52,643 INFO L225 Difference]: With dead ends: 1442 [2022-12-14 06:41:52,643 INFO L226 Difference]: Without dead ends: 1440 [2022-12-14 06:41:52,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:41:52,646 INFO L413 NwaCegarLoop]: 767 mSDtfsCounter, 1179 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 744 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1187 SdHoareTripleChecker+Valid, 926 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-12-14 06:41:52,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1187 Valid, 926 Invalid, 760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 744 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-12-14 06:41:52,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1440 states. [2022-12-14 06:41:52,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1440 to 1255. [2022-12-14 06:41:52,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1255 states, 623 states have (on average 2.110754414125201) internal successors, (1315), 1249 states have internal predecessors, (1315), 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) [2022-12-14 06:41:52,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1255 states to 1255 states and 1331 transitions. [2022-12-14 06:41:52,702 INFO L78 Accepts]: Start accepts. Automaton has 1255 states and 1331 transitions. Word has length 3 [2022-12-14 06:41:52,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:41:52,702 INFO L495 AbstractCegarLoop]: Abstraction has 1255 states and 1331 transitions. [2022-12-14 06:41:52,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:41:52,702 INFO L276 IsEmpty]: Start isEmpty. Operand 1255 states and 1331 transitions. [2022-12-14 06:41:52,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-12-14 06:41:52,702 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:41:52,703 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-12-14 06:41:52,714 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-12-14 06:41:52,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:41:52,904 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 636 more)] === [2022-12-14 06:41:52,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:41:52,906 INFO L85 PathProgramCache]: Analyzing trace with hash 38795, now seen corresponding path program 1 times [2022-12-14 06:41:52,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 06:41:52,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1792355758] [2022-12-14 06:41:52,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:41:52,908 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:41:52,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 06:41:52,911 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 06:41:52,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-12-14 06:41:53,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:41:53,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 06:41:53,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:41:53,045 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 06:41:53,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:41:53,052 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 06:41:53,052 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 06:41:53,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1792355758] [2022-12-14 06:41:53,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1792355758] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:41:53,053 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:41:53,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 06:41:53,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258858203] [2022-12-14 06:41:53,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:41:53,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:41:53,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 06:41:53,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:41:53,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:41:53,055 INFO L87 Difference]: Start difference. First operand 1255 states and 1331 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:41:56,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:41:56,148 INFO L93 Difference]: Finished difference Result 1864 states and 1991 transitions. [2022-12-14 06:41:56,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:41:56,149 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-12-14 06:41:56,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:41:56,153 INFO L225 Difference]: With dead ends: 1864 [2022-12-14 06:41:56,153 INFO L226 Difference]: Without dead ends: 1864 [2022-12-14 06:41:56,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:41:56,154 INFO L413 NwaCegarLoop]: 1045 mSDtfsCounter, 650 mSDsluCounter, 701 mSDsCounter, 0 mSdLazyCounter, 905 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 655 SdHoareTripleChecker+Valid, 1746 SdHoareTripleChecker+Invalid, 910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-12-14 06:41:56,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [655 Valid, 1746 Invalid, 910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 905 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-12-14 06:41:56,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1864 states. [2022-12-14 06:41:56,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1864 to 1455. [2022-12-14 06:41:56,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1455 states, 824 states have (on average 2.095873786407767) internal successors, (1727), 1449 states have internal predecessors, (1727), 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) [2022-12-14 06:41:56,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1455 states to 1455 states and 1743 transitions. [2022-12-14 06:41:56,175 INFO L78 Accepts]: Start accepts. Automaton has 1455 states and 1743 transitions. Word has length 3 [2022-12-14 06:41:56,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:41:56,175 INFO L495 AbstractCegarLoop]: Abstraction has 1455 states and 1743 transitions. [2022-12-14 06:41:56,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:41:56,176 INFO L276 IsEmpty]: Start isEmpty. Operand 1455 states and 1743 transitions. [2022-12-14 06:41:56,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 06:41:56,176 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:41:56,176 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:41:56,183 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-12-14 06:41:56,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:41:56,378 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 636 more)] === [2022-12-14 06:41:56,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:41:56,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1466973012, now seen corresponding path program 1 times [2022-12-14 06:41:56,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 06:41:56,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1263851623] [2022-12-14 06:41:56,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:41:56,382 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:41:56,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 06:41:56,385 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 06:41:56,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-12-14 06:41:56,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:41:56,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 06:41:56,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:41:56,525 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 06:41:56,529 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-14 06:41:56,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:41:56,576 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-12-14 06:41:56,590 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-14 06:41:56,591 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-14 06:41:56,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:41:56,609 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 06:41:56,609 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 06:41:56,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1263851623] [2022-12-14 06:41:56,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1263851623] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:41:56,609 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:41:56,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 06:41:56,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977910412] [2022-12-14 06:41:56,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:41:56,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 06:41:56,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 06:41:56,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 06:41:56,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 06:41:56,611 INFO L87 Difference]: Start difference. First operand 1455 states and 1743 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) [2022-12-14 06:41:59,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:41:59,469 INFO L93 Difference]: Finished difference Result 1633 states and 1932 transitions. [2022-12-14 06:41:59,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 06:41:59,470 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 [2022-12-14 06:41:59,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:41:59,473 INFO L225 Difference]: With dead ends: 1633 [2022-12-14 06:41:59,474 INFO L226 Difference]: Without dead ends: 1633 [2022-12-14 06:41:59,474 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 [2022-12-14 06:41:59,474 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 1470 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 1132 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1478 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 1149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-12-14 06:41:59,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1478 Valid, 542 Invalid, 1149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1132 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-12-14 06:41:59,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1633 states. [2022-12-14 06:41:59,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1633 to 1244. [2022-12-14 06:41:59,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1244 states, 623 states have (on average 2.091492776886035) internal successors, (1303), 1238 states have internal predecessors, (1303), 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) [2022-12-14 06:41:59,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1244 states to 1244 states and 1319 transitions. [2022-12-14 06:41:59,501 INFO L78 Accepts]: Start accepts. Automaton has 1244 states and 1319 transitions. Word has length 7 [2022-12-14 06:41:59,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:41:59,501 INFO L495 AbstractCegarLoop]: Abstraction has 1244 states and 1319 transitions. [2022-12-14 06:41:59,501 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) [2022-12-14 06:41:59,501 INFO L276 IsEmpty]: Start isEmpty. Operand 1244 states and 1319 transitions. [2022-12-14 06:41:59,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 06:41:59,502 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:41:59,502 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:41:59,509 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-12-14 06:41:59,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:41:59,704 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 636 more)] === [2022-12-14 06:41:59,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:41:59,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476910, now seen corresponding path program 1 times [2022-12-14 06:41:59,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 06:41:59,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1603322997] [2022-12-14 06:41:59,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:41:59,707 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:41:59,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 06:41:59,710 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 06:41:59,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-12-14 06:41:59,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:41:59,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 06:41:59,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:41:59,817 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-14 06:41:59,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:41:59,825 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 06:41:59,825 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 06:41:59,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1603322997] [2022-12-14 06:41:59,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1603322997] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:41:59,825 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:41:59,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 06:41:59,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272500385] [2022-12-14 06:41:59,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:41:59,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:41:59,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 06:41:59,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:41:59,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:41:59,826 INFO L87 Difference]: Start difference. First operand 1244 states and 1319 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) [2022-12-14 06:42:01,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:42:01,580 INFO L93 Difference]: Finished difference Result 1571 states and 1675 transitions. [2022-12-14 06:42:01,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:42:01,582 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 [2022-12-14 06:42:01,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:42:01,586 INFO L225 Difference]: With dead ends: 1571 [2022-12-14 06:42:01,586 INFO L226 Difference]: Without dead ends: 1571 [2022-12-14 06:42:01,587 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 [2022-12-14 06:42:01,587 INFO L413 NwaCegarLoop]: 1161 mSDtfsCounter, 988 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 829 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 996 SdHoareTripleChecker+Valid, 1507 SdHoareTripleChecker+Invalid, 883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-12-14 06:42:01,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [996 Valid, 1507 Invalid, 883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 829 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-12-14 06:42:01,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1571 states. [2022-12-14 06:42:01,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1571 to 1195. [2022-12-14 06:42:01,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1195 states, 623 states have (on average 2.012841091492777) internal successors, (1254), 1189 states have internal predecessors, (1254), 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) [2022-12-14 06:42:01,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1195 states to 1195 states and 1270 transitions. [2022-12-14 06:42:01,609 INFO L78 Accepts]: Start accepts. Automaton has 1195 states and 1270 transitions. Word has length 8 [2022-12-14 06:42:01,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:42:01,610 INFO L495 AbstractCegarLoop]: Abstraction has 1195 states and 1270 transitions. [2022-12-14 06:42:01,610 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) [2022-12-14 06:42:01,610 INFO L276 IsEmpty]: Start isEmpty. Operand 1195 states and 1270 transitions. [2022-12-14 06:42:01,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-14 06:42:01,610 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:42:01,610 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:42:01,622 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-12-14 06:42:01,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:42:01,811 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 636 more)] === [2022-12-14 06:42:01,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:42:01,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1768476909, now seen corresponding path program 1 times [2022-12-14 06:42:01,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 06:42:01,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1983586908] [2022-12-14 06:42:01,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:42:01,815 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:42:01,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 06:42:01,816 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 06:42:01,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-12-14 06:42:01,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:42:01,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 06:42:01,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:42:01,906 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 06:42:01,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:42:01,924 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 06:42:01,924 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 06:42:01,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1983586908] [2022-12-14 06:42:01,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1983586908] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:42:01,924 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:42:01,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 06:42:01,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247297257] [2022-12-14 06:42:01,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:42:01,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:42:01,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 06:42:01,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:42:01,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:42:01,926 INFO L87 Difference]: Start difference. First operand 1195 states and 1270 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) [2022-12-14 06:42:04,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:42:04,717 INFO L93 Difference]: Finished difference Result 1649 states and 1756 transitions. [2022-12-14 06:42:04,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:42:04,717 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 [2022-12-14 06:42:04,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:42:04,721 INFO L225 Difference]: With dead ends: 1649 [2022-12-14 06:42:04,721 INFO L226 Difference]: Without dead ends: 1649 [2022-12-14 06:42:04,721 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 [2022-12-14 06:42:04,722 INFO L413 NwaCegarLoop]: 1370 mSDtfsCounter, 673 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 833 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 673 SdHoareTripleChecker+Valid, 1910 SdHoareTripleChecker+Invalid, 845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-12-14 06:42:04,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [673 Valid, 1910 Invalid, 845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 833 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-12-14 06:42:04,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1649 states. [2022-12-14 06:42:04,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1649 to 1217. [2022-12-14 06:42:04,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1217 states, 655 states have (on average 2.0) internal successors, (1310), 1211 states have internal predecessors, (1310), 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) [2022-12-14 06:42:04,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 1326 transitions. [2022-12-14 06:42:04,742 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 1326 transitions. Word has length 8 [2022-12-14 06:42:04,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:42:04,742 INFO L495 AbstractCegarLoop]: Abstraction has 1217 states and 1326 transitions. [2022-12-14 06:42:04,743 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) [2022-12-14 06:42:04,743 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 1326 transitions. [2022-12-14 06:42:04,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-14 06:42:04,743 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:42:04,743 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:42:04,754 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-12-14 06:42:04,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:42:04,944 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr526REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 636 more)] === [2022-12-14 06:42:04,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:42:04,946 INFO L85 PathProgramCache]: Analyzing trace with hash 693876885, now seen corresponding path program 1 times [2022-12-14 06:42:04,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 06:42:04,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1884020998] [2022-12-14 06:42:04,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:42:04,948 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:42:04,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 06:42:04,950 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 06:42:04,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-12-14 06:42:05,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:42:05,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 06:42:05,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:42:05,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:42:05,132 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 06:42:05,132 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 06:42:05,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1884020998] [2022-12-14 06:42:05,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1884020998] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:42:05,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:42:05,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 06:42:05,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393407721] [2022-12-14 06:42:05,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:42:05,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 06:42:05,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 06:42:05,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 06:42:05,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 06:42:05,133 INFO L87 Difference]: Start difference. First operand 1217 states and 1326 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:42:05,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:42:05,835 INFO L93 Difference]: Finished difference Result 1863 states and 2015 transitions. [2022-12-14 06:42:05,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 06:42:05,836 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-12-14 06:42:05,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:42:05,838 INFO L225 Difference]: With dead ends: 1863 [2022-12-14 06:42:05,838 INFO L226 Difference]: Without dead ends: 1863 [2022-12-14 06:42:05,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 06:42:05,839 INFO L413 NwaCegarLoop]: 1390 mSDtfsCounter, 754 mSDsluCounter, 2343 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 756 SdHoareTripleChecker+Valid, 3733 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-14 06:42:05,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [756 Valid, 3733 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-14 06:42:05,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1863 states. [2022-12-14 06:42:05,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1863 to 1461. [2022-12-14 06:42:05,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1461 states, 899 states have (on average 1.967741935483871) internal successors, (1769), 1455 states have internal predecessors, (1769), 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) [2022-12-14 06:42:05,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1461 states to 1461 states and 1785 transitions. [2022-12-14 06:42:05,863 INFO L78 Accepts]: Start accepts. Automaton has 1461 states and 1785 transitions. Word has length 11 [2022-12-14 06:42:05,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:42:05,863 INFO L495 AbstractCegarLoop]: Abstraction has 1461 states and 1785 transitions. [2022-12-14 06:42:05,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:42:05,863 INFO L276 IsEmpty]: Start isEmpty. Operand 1461 states and 1785 transitions. [2022-12-14 06:42:05,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-14 06:42:05,863 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:42:05,864 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:42:05,875 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-12-14 06:42:06,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:42:06,065 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr340REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 636 more)] === [2022-12-14 06:42:06,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:42:06,066 INFO L85 PathProgramCache]: Analyzing trace with hash 518331069, now seen corresponding path program 1 times [2022-12-14 06:42:06,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 06:42:06,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [408358218] [2022-12-14 06:42:06,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:42:06,066 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:42:06,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 06:42:06,068 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 06:42:06,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-12-14 06:42:06,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:42:06,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 06:42:06,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:42:06,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:42:06,199 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 06:42:06,199 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 06:42:06,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [408358218] [2022-12-14 06:42:06,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [408358218] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:42:06,199 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:42:06,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 06:42:06,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503574046] [2022-12-14 06:42:06,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:42:06,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:42:06,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 06:42:06,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:42:06,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:42:06,200 INFO L87 Difference]: Start difference. First operand 1461 states and 1785 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:42:06,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:42:06,219 INFO L93 Difference]: Finished difference Result 1642 states and 1963 transitions. [2022-12-14 06:42:06,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:42:06,219 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-12-14 06:42:06,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:42:06,222 INFO L225 Difference]: With dead ends: 1642 [2022-12-14 06:42:06,222 INFO L226 Difference]: Without dead ends: 1642 [2022-12-14 06:42:06,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:42:06,222 INFO L413 NwaCegarLoop]: 1219 mSDtfsCounter, 602 mSDsluCounter, 849 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 607 SdHoareTripleChecker+Valid, 2068 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 [2022-12-14 06:42:06,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [607 Valid, 2068 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 06:42:06,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1642 states. [2022-12-14 06:42:06,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1642 to 1401. [2022-12-14 06:42:06,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1401 states, 863 states have (on average 1.9501738122827346) internal successors, (1683), 1395 states have internal predecessors, (1683), 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) [2022-12-14 06:42:06,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1401 states to 1401 states and 1699 transitions. [2022-12-14 06:42:06,239 INFO L78 Accepts]: Start accepts. Automaton has 1401 states and 1699 transitions. Word has length 13 [2022-12-14 06:42:06,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:42:06,239 INFO L495 AbstractCegarLoop]: Abstraction has 1401 states and 1699 transitions. [2022-12-14 06:42:06,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:42:06,239 INFO L276 IsEmpty]: Start isEmpty. Operand 1401 states and 1699 transitions. [2022-12-14 06:42:06,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-14 06:42:06,240 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:42:06,240 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:42:06,250 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-12-14 06:42:06,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:42:06,441 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr364REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 636 more)] === [2022-12-14 06:42:06,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:42:06,443 INFO L85 PathProgramCache]: Analyzing trace with hash -100024073, now seen corresponding path program 1 times [2022-12-14 06:42:06,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 06:42:06,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1179350331] [2022-12-14 06:42:06,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:42:06,445 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:42:06,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 06:42:06,448 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 06:42:06,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-12-14 06:42:06,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:42:06,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 06:42:06,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:42:06,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:42:06,594 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 06:42:06,594 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 06:42:06,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1179350331] [2022-12-14 06:42:06,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1179350331] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:42:06,594 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:42:06,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 06:42:06,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337869782] [2022-12-14 06:42:06,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:42:06,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 06:42:06,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 06:42:06,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 06:42:06,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 06:42:06,595 INFO L87 Difference]: Start difference. First operand 1401 states and 1699 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:42:06,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:42:06,636 INFO L93 Difference]: Finished difference Result 1614 states and 1907 transitions. [2022-12-14 06:42:06,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 06:42:06,636 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-12-14 06:42:06,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:42:06,639 INFO L225 Difference]: With dead ends: 1614 [2022-12-14 06:42:06,639 INFO L226 Difference]: Without dead ends: 1614 [2022-12-14 06:42:06,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 06:42:06,639 INFO L413 NwaCegarLoop]: 1174 mSDtfsCounter, 583 mSDsluCounter, 2016 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 588 SdHoareTripleChecker+Valid, 3190 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 06:42:06,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [588 Valid, 3190 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 06:42:06,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1614 states. [2022-12-14 06:42:06,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1614 to 1371. [2022-12-14 06:42:06,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1371 states, 847 states have (on average 1.9185360094451003) internal successors, (1625), 1365 states have internal predecessors, (1625), 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) [2022-12-14 06:42:06,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1371 states to 1371 states and 1641 transitions. [2022-12-14 06:42:06,662 INFO L78 Accepts]: Start accepts. Automaton has 1371 states and 1641 transitions. Word has length 15 [2022-12-14 06:42:06,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:42:06,663 INFO L495 AbstractCegarLoop]: Abstraction has 1371 states and 1641 transitions. [2022-12-14 06:42:06,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:42:06,663 INFO L276 IsEmpty]: Start isEmpty. Operand 1371 states and 1641 transitions. [2022-12-14 06:42:06,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-14 06:42:06,663 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:42:06,663 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:42:06,671 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-12-14 06:42:06,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:42:06,865 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr637ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 636 more)] === [2022-12-14 06:42:06,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:42:06,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1191550546, now seen corresponding path program 1 times [2022-12-14 06:42:06,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 06:42:06,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1155947902] [2022-12-14 06:42:06,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:42:06,866 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:42:06,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 06:42:06,868 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 06:42:06,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-12-14 06:42:07,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:42:07,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-14 06:42:07,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:42:07,035 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:42:07,035 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:42:07,035 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 06:42:07,038 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 [2022-12-14 06:42:07,080 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-14 06:42:07,080 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 [2022-12-14 06:42:07,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:42:07,091 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 06:42:07,091 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 06:42:07,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1155947902] [2022-12-14 06:42:07,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1155947902] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:42:07,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:42:07,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 06:42:07,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958086803] [2022-12-14 06:42:07,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:42:07,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 06:42:07,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 06:42:07,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 06:42:07,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 06:42:07,093 INFO L87 Difference]: Start difference. First operand 1371 states and 1641 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:42:08,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:42:08,269 INFO L93 Difference]: Finished difference Result 1825 states and 2165 transitions. [2022-12-14 06:42:08,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 06:42:08,270 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-12-14 06:42:08,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:42:08,273 INFO L225 Difference]: With dead ends: 1825 [2022-12-14 06:42:08,273 INFO L226 Difference]: Without dead ends: 1825 [2022-12-14 06:42:08,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 06:42:08,274 INFO L413 NwaCegarLoop]: 1141 mSDtfsCounter, 444 mSDsluCounter, 2160 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 3301 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:42:08,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [449 Valid, 3301 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-14 06:42:08,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1825 states. [2022-12-14 06:42:08,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1825 to 1370. [2022-12-14 06:42:08,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1370 states, 846 states have (on average 1.9184397163120568) internal successors, (1623), 1364 states have internal predecessors, (1623), 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) [2022-12-14 06:42:08,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1370 states to 1370 states and 1639 transitions. [2022-12-14 06:42:08,287 INFO L78 Accepts]: Start accepts. Automaton has 1370 states and 1639 transitions. Word has length 16 [2022-12-14 06:42:08,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:42:08,287 INFO L495 AbstractCegarLoop]: Abstraction has 1370 states and 1639 transitions. [2022-12-14 06:42:08,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:42:08,288 INFO L276 IsEmpty]: Start isEmpty. Operand 1370 states and 1639 transitions. [2022-12-14 06:42:08,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-14 06:42:08,288 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:42:08,288 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:42:08,300 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2022-12-14 06:42:08,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:42:08,490 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 636 more)] === [2022-12-14 06:42:08,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:42:08,491 INFO L85 PathProgramCache]: Analyzing trace with hash -344619170, now seen corresponding path program 1 times [2022-12-14 06:42:08,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 06:42:08,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [498450008] [2022-12-14 06:42:08,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:42:08,493 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:42:08,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 06:42:08,495 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 06:42:08,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-12-14 06:42:08,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:42:08,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 06:42:08,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:42:08,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:42:08,671 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 06:42:08,671 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 06:42:08,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [498450008] [2022-12-14 06:42:08,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [498450008] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:42:08,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:42:08,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 06:42:08,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633721911] [2022-12-14 06:42:08,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:42:08,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:42:08,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 06:42:08,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:42:08,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:42:08,673 INFO L87 Difference]: Start difference. First operand 1370 states and 1639 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) [2022-12-14 06:42:08,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:42:08,691 INFO L93 Difference]: Finished difference Result 1310 states and 1553 transitions. [2022-12-14 06:42:08,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:42:08,691 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 [2022-12-14 06:42:08,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:42:08,693 INFO L225 Difference]: With dead ends: 1310 [2022-12-14 06:42:08,693 INFO L226 Difference]: Without dead ends: 1310 [2022-12-14 06:42:08,693 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 [2022-12-14 06:42:08,694 INFO L413 NwaCegarLoop]: 1135 mSDtfsCounter, 1104 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1112 SdHoareTripleChecker+Valid, 1167 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 [2022-12-14 06:42:08,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1112 Valid, 1167 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 06:42:08,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1310 states. [2022-12-14 06:42:08,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1310 to 1310. [2022-12-14 06:42:08,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1310 states, 810 states have (on average 1.8975308641975308) internal successors, (1537), 1304 states have internal predecessors, (1537), 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) [2022-12-14 06:42:08,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1310 states to 1310 states and 1553 transitions. [2022-12-14 06:42:08,704 INFO L78 Accepts]: Start accepts. Automaton has 1310 states and 1553 transitions. Word has length 18 [2022-12-14 06:42:08,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:42:08,704 INFO L495 AbstractCegarLoop]: Abstraction has 1310 states and 1553 transitions. [2022-12-14 06:42:08,704 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) [2022-12-14 06:42:08,705 INFO L276 IsEmpty]: Start isEmpty. Operand 1310 states and 1553 transitions. [2022-12-14 06:42:08,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-12-14 06:42:08,705 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:42:08,705 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] [2022-12-14 06:42:08,718 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-12-14 06:42:08,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:42:08,907 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 636 more)] === [2022-12-14 06:42:08,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:42:08,908 INFO L85 PathProgramCache]: Analyzing trace with hash -466544200, now seen corresponding path program 1 times [2022-12-14 06:42:08,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 06:42:08,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1897636922] [2022-12-14 06:42:08,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:42:08,910 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:42:08,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 06:42:08,913 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 06:42:08,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-12-14 06:42:09,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:42:09,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 06:42:09,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:42:09,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:42:09,080 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 06:42:09,080 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 06:42:09,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1897636922] [2022-12-14 06:42:09,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1897636922] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:42:09,080 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:42:09,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 06:42:09,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076228339] [2022-12-14 06:42:09,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:42:09,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 06:42:09,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 06:42:09,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 06:42:09,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 06:42:09,081 INFO L87 Difference]: Start difference. First operand 1310 states and 1553 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) [2022-12-14 06:42:09,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:42:09,139 INFO L93 Difference]: Finished difference Result 1282 states and 1497 transitions. [2022-12-14 06:42:09,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 06:42:09,140 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 [2022-12-14 06:42:09,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:42:09,142 INFO L225 Difference]: With dead ends: 1282 [2022-12-14 06:42:09,142 INFO L226 Difference]: Without dead ends: 1282 [2022-12-14 06:42:09,142 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 [2022-12-14 06:42:09,143 INFO L413 NwaCegarLoop]: 1090 mSDtfsCounter, 1085 mSDsluCounter, 1115 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1093 SdHoareTripleChecker+Valid, 2205 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 06:42:09,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1093 Valid, 2205 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 06:42:09,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1282 states. [2022-12-14 06:42:09,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1282 to 1280. [2022-12-14 06:42:09,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1280 states, 794 states have (on average 1.86272040302267) internal successors, (1479), 1274 states have internal predecessors, (1479), 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) [2022-12-14 06:42:09,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1280 states to 1280 states and 1495 transitions. [2022-12-14 06:42:09,154 INFO L78 Accepts]: Start accepts. Automaton has 1280 states and 1495 transitions. Word has length 20 [2022-12-14 06:42:09,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:42:09,154 INFO L495 AbstractCegarLoop]: Abstraction has 1280 states and 1495 transitions. [2022-12-14 06:42:09,155 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) [2022-12-14 06:42:09,155 INFO L276 IsEmpty]: Start isEmpty. Operand 1280 states and 1495 transitions. [2022-12-14 06:42:09,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-12-14 06:42:09,155 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:42:09,156 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] [2022-12-14 06:42:09,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-12-14 06:42:09,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:42:09,357 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 636 more)] === [2022-12-14 06:42:09,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:42:09,358 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531686, now seen corresponding path program 1 times [2022-12-14 06:42:09,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 06:42:09,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1896078709] [2022-12-14 06:42:09,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:42:09,360 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:42:09,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 06:42:09,363 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 06:42:09,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-12-14 06:42:09,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:42:09,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 06:42:09,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:42:09,548 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-14 06:42:09,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:42:09,610 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 06:42:09,610 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 06:42:09,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1896078709] [2022-12-14 06:42:09,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1896078709] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:42:09,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:42:09,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 06:42:09,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487817716] [2022-12-14 06:42:09,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:42:09,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 06:42:09,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 06:42:09,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 06:42:09,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 06:42:09,611 INFO L87 Difference]: Start difference. First operand 1280 states and 1495 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) [2022-12-14 06:42:11,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:42:11,646 INFO L93 Difference]: Finished difference Result 1879 states and 2228 transitions. [2022-12-14 06:42:11,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 06:42:11,647 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 [2022-12-14 06:42:11,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:42:11,650 INFO L225 Difference]: With dead ends: 1879 [2022-12-14 06:42:11,651 INFO L226 Difference]: Without dead ends: 1879 [2022-12-14 06:42:11,651 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 [2022-12-14 06:42:11,651 INFO L413 NwaCegarLoop]: 601 mSDtfsCounter, 1764 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 1142 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1769 SdHoareTripleChecker+Valid, 1269 SdHoareTripleChecker+Invalid, 1173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-12-14 06:42:11,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1769 Valid, 1269 Invalid, 1173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1142 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-12-14 06:42:11,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1879 states. [2022-12-14 06:42:11,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1879 to 1276. [2022-12-14 06:42:11,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1276 states, 794 states have (on average 1.8526448362720402) internal successors, (1471), 1270 states have internal predecessors, (1471), 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) [2022-12-14 06:42:11,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1276 states to 1276 states and 1487 transitions. [2022-12-14 06:42:11,665 INFO L78 Accepts]: Start accepts. Automaton has 1276 states and 1487 transitions. Word has length 34 [2022-12-14 06:42:11,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:42:11,666 INFO L495 AbstractCegarLoop]: Abstraction has 1276 states and 1487 transitions. [2022-12-14 06:42:11,666 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) [2022-12-14 06:42:11,666 INFO L276 IsEmpty]: Start isEmpty. Operand 1276 states and 1487 transitions. [2022-12-14 06:42:11,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-12-14 06:42:11,667 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:42:11,667 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] [2022-12-14 06:42:11,675 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2022-12-14 06:42:11,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:42:11,868 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 636 more)] === [2022-12-14 06:42:11,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:42:11,870 INFO L85 PathProgramCache]: Analyzing trace with hash 2117531687, now seen corresponding path program 1 times [2022-12-14 06:42:11,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 06:42:11,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1284683050] [2022-12-14 06:42:11,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:42:11,872 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:42:11,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 06:42:11,875 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 06:42:11,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-12-14 06:42:12,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:42:12,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 06:42:12,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:42:12,036 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 06:42:12,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:42:12,142 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 06:42:12,142 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 06:42:12,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1284683050] [2022-12-14 06:42:12,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1284683050] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:42:12,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:42:12,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 06:42:12,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430685433] [2022-12-14 06:42:12,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:42:12,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 06:42:12,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 06:42:12,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 06:42:12,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 06:42:12,143 INFO L87 Difference]: Start difference. First operand 1276 states and 1487 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) [2022-12-14 06:42:15,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:42:15,452 INFO L93 Difference]: Finished difference Result 2007 states and 2335 transitions. [2022-12-14 06:42:15,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 06:42:15,454 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 [2022-12-14 06:42:15,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:42:15,457 INFO L225 Difference]: With dead ends: 2007 [2022-12-14 06:42:15,457 INFO L226 Difference]: Without dead ends: 2007 [2022-12-14 06:42:15,457 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 [2022-12-14 06:42:15,457 INFO L413 NwaCegarLoop]: 1436 mSDtfsCounter, 1230 mSDsluCounter, 1140 mSDsCounter, 0 mSdLazyCounter, 1441 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1235 SdHoareTripleChecker+Valid, 2576 SdHoareTripleChecker+Invalid, 1445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-12-14 06:42:15,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1235 Valid, 2576 Invalid, 1445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1441 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-12-14 06:42:15,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2007 states. [2022-12-14 06:42:15,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2007 to 1272. [2022-12-14 06:42:15,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1272 states, 794 states have (on average 1.8425692695214106) internal successors, (1463), 1266 states have internal predecessors, (1463), 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) [2022-12-14 06:42:15,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1272 states to 1272 states and 1479 transitions. [2022-12-14 06:42:15,468 INFO L78 Accepts]: Start accepts. Automaton has 1272 states and 1479 transitions. Word has length 34 [2022-12-14 06:42:15,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:42:15,468 INFO L495 AbstractCegarLoop]: Abstraction has 1272 states and 1479 transitions. [2022-12-14 06:42:15,468 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) [2022-12-14 06:42:15,468 INFO L276 IsEmpty]: Start isEmpty. Operand 1272 states and 1479 transitions. [2022-12-14 06:42:15,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-12-14 06:42:15,469 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:42:15,469 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] [2022-12-14 06:42:15,478 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-12-14 06:42:15,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:42:15,670 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 636 more)] === [2022-12-14 06:42:15,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:42:15,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1509555205, now seen corresponding path program 1 times [2022-12-14 06:42:15,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 06:42:15,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [41530377] [2022-12-14 06:42:15,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:42:15,673 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:42:15,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 06:42:15,674 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 06:42:15,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-12-14 06:42:15,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:42:15,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 06:42:15,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:42:15,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:42:15,882 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 06:42:15,882 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 06:42:15,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [41530377] [2022-12-14 06:42:15,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [41530377] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:42:15,882 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:42:15,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 06:42:15,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868051674] [2022-12-14 06:42:15,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:42:15,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 06:42:15,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 06:42:15,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 06:42:15,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 06:42:15,884 INFO L87 Difference]: Start difference. First operand 1272 states and 1479 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:42:15,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:42:15,916 INFO L93 Difference]: Finished difference Result 1260 states and 1459 transitions. [2022-12-14 06:42:15,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 06:42:15,917 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2022-12-14 06:42:15,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:42:15,919 INFO L225 Difference]: With dead ends: 1260 [2022-12-14 06:42:15,919 INFO L226 Difference]: Without dead ends: 1260 [2022-12-14 06:42:15,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 06:42:15,920 INFO L413 NwaCegarLoop]: 1084 mSDtfsCounter, 1054 mSDsluCounter, 1099 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1062 SdHoareTripleChecker+Valid, 2183 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 [2022-12-14 06:42:15,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1062 Valid, 2183 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 06:42:15,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1260 states. [2022-12-14 06:42:15,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1260 to 1260. [2022-12-14 06:42:15,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1260 states, 782 states have (on average 1.8452685421994885) internal successors, (1443), 1254 states have internal predecessors, (1443), 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) [2022-12-14 06:42:15,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1260 states to 1260 states and 1459 transitions. [2022-12-14 06:42:15,929 INFO L78 Accepts]: Start accepts. Automaton has 1260 states and 1459 transitions. Word has length 52 [2022-12-14 06:42:15,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:42:15,929 INFO L495 AbstractCegarLoop]: Abstraction has 1260 states and 1459 transitions. [2022-12-14 06:42:15,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:42:15,929 INFO L276 IsEmpty]: Start isEmpty. Operand 1260 states and 1459 transitions. [2022-12-14 06:42:15,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-12-14 06:42:15,930 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:42:15,930 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] [2022-12-14 06:42:15,939 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2022-12-14 06:42:16,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:42:16,131 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 636 more)] === [2022-12-14 06:42:16,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:42:16,132 INFO L85 PathProgramCache]: Analyzing trace with hash -881686959, now seen corresponding path program 1 times [2022-12-14 06:42:16,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 06:42:16,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [908809364] [2022-12-14 06:42:16,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:42:16,135 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:42:16,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 06:42:16,138 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 06:42:16,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-12-14 06:42:16,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:42:16,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-14 06:42:16,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:42:16,604 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-14 06:42:16,611 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 06:42:16,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 06:42:16,925 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-12-14 06:42:16,938 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-14 06:42:16,938 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-14 06:42:16,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:42:16,951 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 06:42:16,951 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 06:42:16,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [908809364] [2022-12-14 06:42:16,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [908809364] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:42:16,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:42:16,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 06:42:16,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225933409] [2022-12-14 06:42:16,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:42:16,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 06:42:16,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 06:42:16,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 06:42:16,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-14 06:42:16,952 INFO L87 Difference]: Start difference. First operand 1260 states and 1459 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) [2022-12-14 06:42:19,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:42:19,451 INFO L93 Difference]: Finished difference Result 1608 states and 1924 transitions. [2022-12-14 06:42:19,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 06:42:19,452 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 [2022-12-14 06:42:19,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:42:19,457 INFO L225 Difference]: With dead ends: 1608 [2022-12-14 06:42:19,457 INFO L226 Difference]: Without dead ends: 1608 [2022-12-14 06:42:19,457 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 [2022-12-14 06:42:19,457 INFO L413 NwaCegarLoop]: 525 mSDtfsCounter, 1754 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 879 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1757 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 879 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-12-14 06:42:19,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1757 Valid, 791 Invalid, 927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 879 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-12-14 06:42:19,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1608 states. [2022-12-14 06:42:19,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1608 to 1190. [2022-12-14 06:42:19,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1190 states, 750 states have (on average 1.7853333333333334) internal successors, (1339), 1184 states have internal predecessors, (1339), 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) [2022-12-14 06:42:19,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1190 states to 1190 states and 1355 transitions. [2022-12-14 06:42:19,467 INFO L78 Accepts]: Start accepts. Automaton has 1190 states and 1355 transitions. Word has length 60 [2022-12-14 06:42:19,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:42:19,467 INFO L495 AbstractCegarLoop]: Abstraction has 1190 states and 1355 transitions. [2022-12-14 06:42:19,467 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) [2022-12-14 06:42:19,467 INFO L276 IsEmpty]: Start isEmpty. Operand 1190 states and 1355 transitions. [2022-12-14 06:42:19,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-14 06:42:19,467 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:42:19,467 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] [2022-12-14 06:42:19,477 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-12-14 06:42:19,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:42:19,669 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 636 more)] === [2022-12-14 06:42:19,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:42:19,670 INFO L85 PathProgramCache]: Analyzing trace with hash -855470841, now seen corresponding path program 1 times [2022-12-14 06:42:19,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 06:42:19,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [28473653] [2022-12-14 06:42:19,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:42:19,672 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:42:19,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 06:42:19,675 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 06:42:19,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-12-14 06:42:19,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:42:19,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 06:42:19,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:42:19,935 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-14 06:42:19,945 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 [2022-12-14 06:42:19,966 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 [2022-12-14 06:42:19,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:42:19,973 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 06:42:19,973 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 06:42:19,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [28473653] [2022-12-14 06:42:19,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [28473653] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:42:19,973 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:42:19,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 06:42:19,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737126574] [2022-12-14 06:42:19,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:42:19,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 06:42:19,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 06:42:19,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 06:42:19,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 06:42:19,974 INFO L87 Difference]: Start difference. First operand 1190 states and 1355 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) [2022-12-14 06:42:22,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:42:22,117 INFO L93 Difference]: Finished difference Result 1189 states and 1354 transitions. [2022-12-14 06:42:22,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 06:42:22,117 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 [2022-12-14 06:42:22,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:42:22,119 INFO L225 Difference]: With dead ends: 1189 [2022-12-14 06:42:22,119 INFO L226 Difference]: Without dead ends: 1189 [2022-12-14 06:42:22,120 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 [2022-12-14 06:42:22,120 INFO L413 NwaCegarLoop]: 1044 mSDtfsCounter, 4 mSDsluCounter, 1632 mSDsCounter, 0 mSdLazyCounter, 1505 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2676 SdHoareTripleChecker+Invalid, 1506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:42:22,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2676 Invalid, 1506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1505 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-12-14 06:42:22,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1189 states. [2022-12-14 06:42:22,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1189 to 1189. [2022-12-14 06:42:22,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1189 states, 750 states have (on average 1.784) internal successors, (1338), 1183 states have internal predecessors, (1338), 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) [2022-12-14 06:42:22,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1189 states to 1189 states and 1354 transitions. [2022-12-14 06:42:22,128 INFO L78 Accepts]: Start accepts. Automaton has 1189 states and 1354 transitions. Word has length 65 [2022-12-14 06:42:22,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:42:22,128 INFO L495 AbstractCegarLoop]: Abstraction has 1189 states and 1354 transitions. [2022-12-14 06:42:22,129 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) [2022-12-14 06:42:22,129 INFO L276 IsEmpty]: Start isEmpty. Operand 1189 states and 1354 transitions. [2022-12-14 06:42:22,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-14 06:42:22,129 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:42:22,129 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] [2022-12-14 06:42:22,139 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-12-14 06:42:22,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:42:22,330 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr77REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 636 more)] === [2022-12-14 06:42:22,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:42:22,331 INFO L85 PathProgramCache]: Analyzing trace with hash -855470840, now seen corresponding path program 1 times [2022-12-14 06:42:22,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 06:42:22,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1302695836] [2022-12-14 06:42:22,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:42:22,334 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:42:22,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 06:42:22,335 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 06:42:22,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-12-14 06:42:22,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:42:22,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-14 06:42:22,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:42:22,586 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 06:42:22,598 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 [2022-12-14 06:42:22,603 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 [2022-12-14 06:42:22,640 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 [2022-12-14 06:42:22,645 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 [2022-12-14 06:42:22,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:42:22,657 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 06:42:22,658 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 06:42:22,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1302695836] [2022-12-14 06:42:22,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1302695836] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:42:22,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:42:22,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 06:42:22,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897709013] [2022-12-14 06:42:22,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:42:22,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 06:42:22,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 06:42:22,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 06:42:22,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 06:42:22,659 INFO L87 Difference]: Start difference. First operand 1189 states and 1354 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) [2022-12-14 06:42:25,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:42:25,610 INFO L93 Difference]: Finished difference Result 1188 states and 1353 transitions. [2022-12-14 06:42:25,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 06:42:25,611 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 [2022-12-14 06:42:25,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:42:25,613 INFO L225 Difference]: With dead ends: 1188 [2022-12-14 06:42:25,613 INFO L226 Difference]: Without dead ends: 1188 [2022-12-14 06:42:25,613 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 [2022-12-14 06:42:25,614 INFO L413 NwaCegarLoop]: 1044 mSDtfsCounter, 2 mSDsluCounter, 1685 mSDsCounter, 0 mSdLazyCounter, 1450 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2729 SdHoareTripleChecker+Invalid, 1451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-12-14 06:42:25,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2729 Invalid, 1451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1450 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-12-14 06:42:25,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1188 states. [2022-12-14 06:42:25,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1188 to 1188. [2022-12-14 06:42:25,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1188 states, 749 states have (on average 1.7850467289719627) internal successors, (1337), 1182 states have internal predecessors, (1337), 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) [2022-12-14 06:42:25,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1188 states to 1188 states and 1353 transitions. [2022-12-14 06:42:25,622 INFO L78 Accepts]: Start accepts. Automaton has 1188 states and 1353 transitions. Word has length 65 [2022-12-14 06:42:25,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:42:25,622 INFO L495 AbstractCegarLoop]: Abstraction has 1188 states and 1353 transitions. [2022-12-14 06:42:25,622 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) [2022-12-14 06:42:25,622 INFO L276 IsEmpty]: Start isEmpty. Operand 1188 states and 1353 transitions. [2022-12-14 06:42:25,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-12-14 06:42:25,623 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:42:25,623 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] [2022-12-14 06:42:25,633 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-12-14 06:42:25,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:42:25,824 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 636 more)] === [2022-12-14 06:42:25,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:42:25,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1808778577, now seen corresponding path program 1 times [2022-12-14 06:42:25,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 06:42:25,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1841507599] [2022-12-14 06:42:25,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:42:25,829 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:42:25,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 06:42:25,838 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 06:42:25,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-12-14 06:42:26,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:42:26,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 06:42:26,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:42:26,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:42:26,056 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 06:42:26,056 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 06:42:26,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1841507599] [2022-12-14 06:42:26,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1841507599] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:42:26,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:42:26,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 06:42:26,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221121683] [2022-12-14 06:42:26,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:42:26,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 06:42:26,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 06:42:26,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 06:42:26,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 06:42:26,058 INFO L87 Difference]: Start difference. First operand 1188 states and 1353 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) [2022-12-14 06:42:26,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:42:26,099 INFO L93 Difference]: Finished difference Result 1191 states and 1357 transitions. [2022-12-14 06:42:26,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 06:42:26,100 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 [2022-12-14 06:42:26,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:42:26,104 INFO L225 Difference]: With dead ends: 1191 [2022-12-14 06:42:26,104 INFO L226 Difference]: Without dead ends: 1191 [2022-12-14 06:42:26,104 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 [2022-12-14 06:42:26,105 INFO L413 NwaCegarLoop]: 1044 mSDtfsCounter, 2 mSDsluCounter, 2083 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3127 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 [2022-12-14 06:42:26,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3127 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 06:42:26,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1191 states. [2022-12-14 06:42:26,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1191 to 1191. [2022-12-14 06:42:26,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1191 states, 751 states have (on average 1.7842876165113182) internal successors, (1340), 1185 states have internal predecessors, (1340), 8 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2022-12-14 06:42:26,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1191 states to 1191 states and 1357 transitions. [2022-12-14 06:42:26,124 INFO L78 Accepts]: Start accepts. Automaton has 1191 states and 1357 transitions. Word has length 73 [2022-12-14 06:42:26,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:42:26,124 INFO L495 AbstractCegarLoop]: Abstraction has 1191 states and 1357 transitions. [2022-12-14 06:42:26,124 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) [2022-12-14 06:42:26,124 INFO L276 IsEmpty]: Start isEmpty. Operand 1191 states and 1357 transitions. [2022-12-14 06:42:26,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-12-14 06:42:26,125 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:42:26,125 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] [2022-12-14 06:42:26,135 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-12-14 06:42:26,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:42:26,326 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 636 more)] === [2022-12-14 06:42:26,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:42:26,327 INFO L85 PathProgramCache]: Analyzing trace with hash 483111072, now seen corresponding path program 1 times [2022-12-14 06:42:26,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 06:42:26,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1383140271] [2022-12-14 06:42:26,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:42:26,329 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:42:26,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 06:42:26,332 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 06:42:26,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-12-14 06:42:26,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:42:26,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 06:42:26,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:42:26,725 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:42:26,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:42:26,788 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:42:26,789 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 06:42:26,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1383140271] [2022-12-14 06:42:26,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1383140271] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 06:42:26,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1352334204] [2022-12-14 06:42:26,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:42:26,789 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 06:42:26,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 06:42:26,790 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 06:42:26,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2022-12-14 06:42:27,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:42:27,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 06:42:27,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:42:27,221 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:42:27,221 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:42:27,248 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:42:27,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1352334204] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 06:42:27,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604337798] [2022-12-14 06:42:27,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:42:27,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:42:27,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:42:27,249 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 06:42:27,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-12-14 06:42:27,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:42:27,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 06:42:27,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:42:27,447 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:42:27,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:42:27,475 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:42:27,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [604337798] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 06:42:27,475 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 06:42:27,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2022-12-14 06:42:27,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712819953] [2022-12-14 06:42:27,475 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 06:42:27,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 06:42:27,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 06:42:27,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 06:42:27,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-14 06:42:27,476 INFO L87 Difference]: Start difference. First operand 1191 states and 1357 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) [2022-12-14 06:42:27,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:42:27,628 INFO L93 Difference]: Finished difference Result 1203 states and 1374 transitions. [2022-12-14 06:42:27,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-14 06:42:27,629 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 [2022-12-14 06:42:27,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:42:27,633 INFO L225 Difference]: With dead ends: 1203 [2022-12-14 06:42:27,633 INFO L226 Difference]: Without dead ends: 1203 [2022-12-14 06:42:27,633 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 [2022-12-14 06:42:27,634 INFO L413 NwaCegarLoop]: 1045 mSDtfsCounter, 12 mSDsluCounter, 3123 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 4168 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:42:27,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 4168 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 06:42:27,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2022-12-14 06:42:27,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1201. [2022-12-14 06:42:27,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1201 states, 760 states have (on average 1.7828947368421053) internal successors, (1355), 1194 states have internal predecessors, (1355), 8 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2022-12-14 06:42:27,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1201 states to 1201 states and 1372 transitions. [2022-12-14 06:42:27,657 INFO L78 Accepts]: Start accepts. Automaton has 1201 states and 1372 transitions. Word has length 74 [2022-12-14 06:42:27,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:42:27,657 INFO L495 AbstractCegarLoop]: Abstraction has 1201 states and 1372 transitions. [2022-12-14 06:42:27,657 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) [2022-12-14 06:42:27,657 INFO L276 IsEmpty]: Start isEmpty. Operand 1201 states and 1372 transitions. [2022-12-14 06:42:27,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-12-14 06:42:27,658 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:42:27,658 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] [2022-12-14 06:42:27,667 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-12-14 06:42:27,871 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2022-12-14 06:42:28,075 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Ended with exit code 0 [2022-12-14 06:42:28,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:42:28,260 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 636 more)] === [2022-12-14 06:42:28,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:42:28,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1705595153, now seen corresponding path program 2 times [2022-12-14 06:42:28,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 06:42:28,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1409592530] [2022-12-14 06:42:28,264 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 06:42:28,264 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:42:28,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 06:42:28,266 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 06:42:28,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-12-14 06:42:28,799 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 06:42:28,800 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 06:42:28,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 06:42:28,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:42:28,860 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:42:28,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:42:29,001 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:42:29,002 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 06:42:29,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1409592530] [2022-12-14 06:42:29,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1409592530] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 06:42:29,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2116902223] [2022-12-14 06:42:29,002 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 06:42:29,002 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 06:42:29,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 06:42:29,003 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 06:42:29,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2022-12-14 06:42:30,285 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 06:42:30,285 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 06:42:30,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-14 06:42:30,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:42:30,331 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:42:30,331 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:42:30,390 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:42:30,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2116902223] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 06:42:30,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258979119] [2022-12-14 06:42:30,390 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 06:42:30,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:42:30,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:42:30,391 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 06:42:30,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-12-14 06:42:59,861 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 06:42:59,862 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 06:42:59,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 29 conjunts are in the unsatisfiable core [2022-12-14 06:42:59,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:42:59,995 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-14 06:42:59,995 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-14 06:43:00,000 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-14 06:43:00,040 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-14 06:43:00,049 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 [2022-12-14 06:43:00,192 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 22 treesize of output 10 [2022-12-14 06:43:00,197 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-12-14 06:43:00,281 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1651 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1651) |c_#memory_$Pointer$.offset|)) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16))) (exists ((v_ArrVal_1650 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1650)))) is different from true [2022-12-14 06:43:00,353 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1654 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1654))) (exists ((v_ArrVal_1655 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1655))) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16)))) is different from true [2022-12-14 06:43:00,366 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1656 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1656) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_1657 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1657) |c_#memory_$Pointer$.offset|)) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16)))) is different from true [2022-12-14 06:43:00,407 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-12-14 06:43:00,407 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2022-12-14 06:43:00,418 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-12-14 06:43:00,492 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 31 treesize of output 13 [2022-12-14 06:43:00,497 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-12-14 06:43:00,539 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 9 not checked. [2022-12-14 06:43:00,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:43:00,841 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_1669 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_1669) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd .cse0 (_ bv20 32))))) (forall ((v_ArrVal_1669 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1668 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_1669) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_1668) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2022-12-14 06:43:00,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1258979119] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 06:43:00,847 INFO L184 FreeRefinementEngine]: Found 0 perfect and 5 imperfect interpolant sequences. [2022-12-14 06:43:00,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 12] total 25 [2022-12-14 06:43:00,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5077362] [2022-12-14 06:43:00,847 INFO L85 oduleStraightlineAll]: Using 5 imperfect interpolants to construct interpolant automaton [2022-12-14 06:43:00,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-14 06:43:00,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 06:43:00,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-14 06:43:00,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=460, Unknown=15, NotChecked=188, Total=756 [2022-12-14 06:43:00,848 INFO L87 Difference]: Start difference. First operand 1201 states and 1372 transitions. Second operand has 25 states, 24 states have (on average 5.916666666666667) internal successors, (142), 25 states have internal predecessors, (142), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 06:43:03,053 WARN L859 $PredicateComparison]: unable to prove that (and (not (= |c_#Ultimate.C_memset_#amount| (_ bv44 32))) (exists ((v_ArrVal_1653 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1653))) (exists ((v_ArrVal_1656 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1656) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_1652 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1652))) (exists ((v_ArrVal_1657 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1657) |c_#memory_$Pointer$.offset|)) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16)))) is different from true [2022-12-14 06:43:05,476 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1654 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1654))) (exists ((v_ArrVal_1655 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1655))) (exists ((v_ArrVal_1656 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1656) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_1657 (Array (_ BitVec 32) (_ BitVec 32)))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_1657) |c_#memory_$Pointer$.offset|)) (exists ((v_arrayElimCell_16 (_ BitVec 32))) (= (_ bv44 32) (select |c_#length| v_arrayElimCell_16)))) is different from true [2022-12-14 06:43:22,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:43:22,456 INFO L93 Difference]: Finished difference Result 2758 states and 3315 transitions. [2022-12-14 06:43:22,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-12-14 06:43:22,456 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 5.916666666666667) internal successors, (142), 25 states have internal predecessors, (142), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 77 [2022-12-14 06:43:22,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:43:22,461 INFO L225 Difference]: With dead ends: 2758 [2022-12-14 06:43:22,461 INFO L226 Difference]: Without dead ends: 2746 [2022-12-14 06:43:22,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 358 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 636 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=459, Invalid=2696, Unknown=61, NotChecked=690, Total=3906 [2022-12-14 06:43:22,462 INFO L413 NwaCegarLoop]: 927 mSDtfsCounter, 2022 mSDsluCounter, 11838 mSDsCounter, 0 mSdLazyCounter, 11746 mSolverCounterSat, 40 mSolverCounterUnsat, 614 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2034 SdHoareTripleChecker+Valid, 12765 SdHoareTripleChecker+Invalid, 19583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 11746 IncrementalHoareTripleChecker+Invalid, 614 IncrementalHoareTripleChecker+Unknown, 7183 IncrementalHoareTripleChecker+Unchecked, 17.8s IncrementalHoareTripleChecker+Time [2022-12-14 06:43:22,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2034 Valid, 12765 Invalid, 19583 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [40 Valid, 11746 Invalid, 614 Unknown, 7183 Unchecked, 17.8s Time] [2022-12-14 06:43:22,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2746 states. [2022-12-14 06:43:22,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2746 to 1217. [2022-12-14 06:43:22,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1217 states, 775 states have (on average 1.7703225806451612) internal successors, (1372), 1209 states have internal predecessors, (1372), 8 states have call successors, (8), 3 states have call predecessors, (8), 5 states have return successors, (10), 5 states have call predecessors, (10), 8 states have call successors, (10) [2022-12-14 06:43:22,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 1390 transitions. [2022-12-14 06:43:22,482 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 1390 transitions. Word has length 77 [2022-12-14 06:43:22,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:43:22,482 INFO L495 AbstractCegarLoop]: Abstraction has 1217 states and 1390 transitions. [2022-12-14 06:43:22,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 5.916666666666667) internal successors, (142), 25 states have internal predecessors, (142), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-14 06:43:22,482 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 1390 transitions. [2022-12-14 06:43:22,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-12-14 06:43:22,483 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:43:22,483 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] [2022-12-14 06:43:22,510 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2022-12-14 06:43:22,701 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (24)] Forceful destruction successful, exit code 0 [2022-12-14 06:43:22,901 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Ended with exit code 0 [2022-12-14 06:43:23,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:43:23,086 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 636 more)] === [2022-12-14 06:43:23,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:43:23,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1677221554, now seen corresponding path program 1 times [2022-12-14 06:43:23,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 06:43:23,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [160597500] [2022-12-14 06:43:23,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:43:23,089 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:43:23,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 06:43:23,090 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 06:43:23,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-12-14 06:43:23,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:43:23,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-14 06:43:23,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:43:23,535 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:43:23,535 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:43:23,944 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:43:23,945 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 06:43:23,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [160597500] [2022-12-14 06:43:23,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [160597500] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 06:43:23,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1786287265] [2022-12-14 06:43:23,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:43:23,945 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 06:43:23,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 06:43:23,946 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 06:43:23,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2022-12-14 06:43:24,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:43:24,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-14 06:43:24,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:43:24,406 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:43:24,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:43:24,536 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:43:24,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1786287265] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 06:43:24,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368755381] [2022-12-14 06:43:24,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:43:24,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:43:24,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:43:24,538 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 06:43:24,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-12-14 06:43:24,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:43:24,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-14 06:43:24,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:43:24,851 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:43:24,851 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:43:25,595 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:43:25,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [368755381] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 06:43:25,595 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 06:43:25,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14, 14, 14, 14] total 38 [2022-12-14 06:43:25,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37250298] [2022-12-14 06:43:25,595 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 06:43:25,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-12-14 06:43:25,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 06:43:25,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-12-14 06:43:25,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=447, Invalid=959, Unknown=0, NotChecked=0, Total=1406 [2022-12-14 06:43:25,597 INFO L87 Difference]: Start difference. First operand 1217 states and 1390 transitions. Second operand has 38 states, 38 states have (on average 2.8421052631578947) internal successors, (108), 38 states have internal predecessors, (108), 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) [2022-12-14 06:43:28,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:43:28,124 INFO L93 Difference]: Finished difference Result 1254 states and 1438 transitions. [2022-12-14 06:43:28,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-12-14 06:43:28,124 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.8421052631578947) internal successors, (108), 38 states have internal predecessors, (108), 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 83 [2022-12-14 06:43:28,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:43:28,128 INFO L225 Difference]: With dead ends: 1254 [2022-12-14 06:43:28,128 INFO L226 Difference]: Without dead ends: 1246 [2022-12-14 06:43:28,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 525 GetRequests, 456 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 505 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1628, Invalid=3342, Unknown=0, NotChecked=0, Total=4970 [2022-12-14 06:43:28,129 INFO L413 NwaCegarLoop]: 1053 mSDtfsCounter, 48 mSDsluCounter, 15702 mSDsCounter, 0 mSdLazyCounter, 709 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 16755 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-14 06:43:28,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 16755 Invalid, 739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 709 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-14 06:43:28,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1246 states. [2022-12-14 06:43:28,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1246 to 1228. [2022-12-14 06:43:28,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1228 states, 787 states have (on average 1.7611181702668361) internal successors, (1386), 1221 states have internal predecessors, (1386), 8 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2022-12-14 06:43:28,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1228 states to 1228 states and 1403 transitions. [2022-12-14 06:43:28,139 INFO L78 Accepts]: Start accepts. Automaton has 1228 states and 1403 transitions. Word has length 83 [2022-12-14 06:43:28,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:43:28,140 INFO L495 AbstractCegarLoop]: Abstraction has 1228 states and 1403 transitions. [2022-12-14 06:43:28,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.8421052631578947) internal successors, (108), 38 states have internal predecessors, (108), 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) [2022-12-14 06:43:28,140 INFO L276 IsEmpty]: Start isEmpty. Operand 1228 states and 1403 transitions. [2022-12-14 06:43:28,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-12-14 06:43:28,140 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:43:28,140 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:43:28,146 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (27)] Forceful destruction successful, exit code 0 [2022-12-14 06:43:28,365 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2022-12-14 06:43:28,576 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Ended with exit code 0 [2022-12-14 06:43:28,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:43:28,743 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 636 more)] === [2022-12-14 06:43:28,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:43:28,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1527361039, now seen corresponding path program 3 times [2022-12-14 06:43:28,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 06:43:28,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1339747266] [2022-12-14 06:43:28,746 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 06:43:28,746 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 06:43:28,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 06:43:28,747 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-14 06:43:28,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-12-14 06:43:29,905 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2022-12-14 06:43:29,905 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 06:43:29,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 576 conjuncts, 26 conjunts are in the unsatisfiable core [2022-12-14 06:43:29,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:43:30,269 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:43:30,269 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:43:32,686 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:43:32,686 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 06:43:32,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1339747266] [2022-12-14 06:43:32,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1339747266] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 06:43:32,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2113333823] [2022-12-14 06:43:32,687 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 06:43:32,687 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 06:43:32,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 06:43:32,687 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 06:43:32,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (30)] Waiting until timeout for monitored process [2022-12-14 06:44:02,019 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2022-12-14 06:44:02,019 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 06:44:02,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 576 conjuncts, 26 conjunts are in the unsatisfiable core [2022-12-14 06:44:02,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:44:02,123 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:44:02,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:44:02,601 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:44:02,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2113333823] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 06:44:02,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431187228] [2022-12-14 06:44:02,602 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 06:44:02,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:44:02,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:44:02,603 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 06:44:02,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb01c718-e436-40cf-a2cc-ca90445bb760/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process