./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_pthread_mutex_unlock.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_pthread_mutex_unlock.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P --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 4aba0d481dbad425b1cb3ce4949768f5bfa91a070fed6a0c2b192c70ad920fc2 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:49:13,450 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:49:13,451 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:49:13,486 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:49:13,486 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:49:13,488 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:49:13,489 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:49:13,497 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:49:13,499 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:49:13,500 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:49:13,501 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:49:13,503 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:49:13,503 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:49:13,505 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:49:13,506 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:49:13,508 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:49:13,534 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:49:13,542 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:49:13,544 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:49:13,549 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:49:13,554 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:49:13,555 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:49:13,557 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:49:13,557 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:49:13,561 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:49:13,561 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:49:13,562 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:49:13,563 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:49:13,563 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:49:13,564 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:49:13,565 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:49:13,565 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:49:13,566 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:49:13,578 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:49:13,580 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:49:13,585 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:49:13,587 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:49:13,587 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:49:13,587 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:49:13,588 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:49:13,588 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:49:13,589 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-21 01:49:13,639 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:49:13,639 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:49:13,640 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:49:13,640 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:49:13,642 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:49:13,642 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:49:13,642 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:49:13,642 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:49:13,643 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:49:13,643 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:49:13,644 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:49:13,644 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:49:13,645 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:49:13,645 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:49:13,645 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:49:13,645 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:49:13,646 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:49:13,646 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:49:13,646 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-21 01:49:13,647 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-21 01:49:13,647 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:49:13,647 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 01:49:13,647 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-21 01:49:13,649 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:49:13,650 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 01:49:13,650 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:49:13,650 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-21 01:49:13,650 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-21 01:49:13,651 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-21 01:49:13,651 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:49:13,651 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-21 01:49:13,651 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 01:49:13,652 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:49:13,652 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:49:13,652 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:49:13,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:49:13,653 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:49:13,653 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:49:13,653 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:49:13,653 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:49:13,653 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:49:13,654 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:49:13,654 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4aba0d481dbad425b1cb3ce4949768f5bfa91a070fed6a0c2b192c70ad920fc2 [2021-11-21 01:49:13,899 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:49:13,919 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:49:13,921 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:49:13,922 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:49:13,923 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:49:13,924 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_pthread_mutex_unlock.i [2021-11-21 01:49:13,984 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/data/bc071928f/8eb27a2ac2d2492aa1c8855b2ef530bf/FLAG66781613e [2021-11-21 01:49:14,673 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:49:14,674 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_pthread_mutex_unlock.i [2021-11-21 01:49:14,715 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/data/bc071928f/8eb27a2ac2d2492aa1c8855b2ef530bf/FLAG66781613e [2021-11-21 01:49:14,794 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/data/bc071928f/8eb27a2ac2d2492aa1c8855b2ef530bf [2021-11-21 01:49:14,796 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:49:14,798 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:49:14,799 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:49:14,799 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:49:14,803 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:49:14,804 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:49:14" (1/1) ... [2021-11-21 01:49:14,807 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4734301f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:14, skipping insertion in model container [2021-11-21 01:49:14,807 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:49:14" (1/1) ... [2021-11-21 01:49:14,814 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:49:14,899 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:49:15,063 WARN L230 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_0fd52eec-2270-49bb-b19e-0097d57bd8d0/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_pthread_mutex_unlock.i[472,485] [2021-11-21 01:49:16,224 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:49:16,266 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-21 01:49:16,267 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3e5c8074 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:16, skipping insertion in model container [2021-11-21 01:49:16,267 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:49:16,267 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-21 01:49:16,269 INFO L158 Benchmark]: Toolchain (without parser) took 1470.22ms. Allocated memory was 92.3MB in the beginning and 130.0MB in the end (delta: 37.7MB). Free memory was 57.5MB in the beginning and 87.4MB in the end (delta: -29.8MB). Peak memory consumption was 38.1MB. Max. memory is 16.1GB. [2021-11-21 01:49:16,269 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 92.3MB. Free memory is still 60.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-21 01:49:16,270 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1468.04ms. Allocated memory was 92.3MB in the beginning and 130.0MB in the end (delta: 37.7MB). Free memory was 57.3MB in the beginning and 87.4MB in the end (delta: -30.0MB). Peak memory consumption was 38.1MB. Max. memory is 16.1GB. [2021-11-21 01:49:16,272 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 92.3MB. Free memory is still 60.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1468.04ms. Allocated memory was 92.3MB in the beginning and 130.0MB in the end (delta: 37.7MB). Free memory was 57.3MB in the beginning and 87.4MB in the end (delta: -30.0MB). Peak memory consumption was 38.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2977]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type 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/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_pthread_mutex_unlock.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P --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 4aba0d481dbad425b1cb3ce4949768f5bfa91a070fed6a0c2b192c70ad920fc2 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:49:18,416 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:49:18,418 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:49:18,463 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:49:18,464 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:49:18,465 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:49:18,467 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:49:18,469 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:49:18,471 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:49:18,472 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:49:18,473 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:49:18,475 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:49:18,475 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:49:18,477 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:49:18,482 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:49:18,483 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:49:18,484 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:49:18,486 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:49:18,488 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:49:18,490 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:49:18,492 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:49:18,498 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:49:18,500 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:49:18,503 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:49:18,516 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:49:18,517 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:49:18,517 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:49:18,518 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:49:18,519 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:49:18,520 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:49:18,520 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:49:18,521 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:49:18,522 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:49:18,523 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:49:18,524 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:49:18,524 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:49:18,527 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:49:18,529 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:49:18,529 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:49:18,531 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:49:18,532 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:49:18,533 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-21 01:49:18,580 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:49:18,580 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:49:18,580 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:49:18,581 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:49:18,582 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:49:18,582 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:49:18,582 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:49:18,582 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:49:18,583 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:49:18,584 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:49:18,584 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:49:18,585 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:49:18,586 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-21 01:49:18,586 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-21 01:49:18,587 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:49:18,587 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 01:49:18,587 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-21 01:49:18,587 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:49:18,588 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 01:49:18,588 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:49:18,588 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-21 01:49:18,588 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-21 01:49:18,589 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-21 01:49:18,589 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:49:18,589 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-21 01:49:18,589 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-21 01:49:18,590 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-21 01:49:18,590 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 01:49:18,590 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:49:18,590 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:49:18,591 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-21 01:49:18,591 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:49:18,591 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:49:18,592 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:49:18,592 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:49:18,592 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-21 01:49:18,593 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-21 01:49:18,593 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:49:18,593 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:49:18,593 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_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4aba0d481dbad425b1cb3ce4949768f5bfa91a070fed6a0c2b192c70ad920fc2 [2021-11-21 01:49:18,989 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:49:19,015 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:49:19,018 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:49:19,019 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:49:19,020 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:49:19,021 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_pthread_mutex_unlock.i [2021-11-21 01:49:19,087 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/data/f682bf476/c9f9ebfaed5046f8bbbb1f2ed4b390b7/FLAG5448bd21b [2021-11-21 01:49:19,796 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:49:19,798 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_pthread_mutex_unlock.i [2021-11-21 01:49:19,847 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/data/f682bf476/c9f9ebfaed5046f8bbbb1f2ed4b390b7/FLAG5448bd21b [2021-11-21 01:49:19,917 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/data/f682bf476/c9f9ebfaed5046f8bbbb1f2ed4b390b7 [2021-11-21 01:49:19,919 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:49:19,920 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:49:19,922 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:49:19,922 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:49:19,936 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:49:19,936 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:49:19" (1/1) ... [2021-11-21 01:49:19,937 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c26d447 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:19, skipping insertion in model container [2021-11-21 01:49:19,937 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:49:19" (1/1) ... [2021-11-21 01:49:19,944 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:49:20,025 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:49:20,261 WARN L230 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_0fd52eec-2270-49bb-b19e-0097d57bd8d0/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_pthread_mutex_unlock.i[472,485] [2021-11-21 01:49:21,926 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:49:21,962 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-21 01:49:21,987 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:49:21,989 WARN L230 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_0fd52eec-2270-49bb-b19e-0097d57bd8d0/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_pthread_mutex_unlock.i[472,485] [2021-11-21 01:49:22,118 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:49:22,135 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:49:22,146 WARN L230 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_0fd52eec-2270-49bb-b19e-0097d57bd8d0/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_pthread_mutex_unlock.i[472,485] [2021-11-21 01:49:22,327 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:49:22,539 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:49:22,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:22 WrapperNode [2021-11-21 01:49:22,540 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:49:22,541 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:49:22,542 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:49:22,542 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:49:22,549 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:22" (1/1) ... [2021-11-21 01:49:22,608 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:22" (1/1) ... [2021-11-21 01:49:22,688 INFO L137 Inliner]: procedures = 482, calls = 840, calls flagged for inlining = 54, calls inlined = 37, statements flattened = 970 [2021-11-21 01:49:22,688 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:49:22,689 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:49:22,689 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:49:22,689 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:49:22,697 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:22" (1/1) ... [2021-11-21 01:49:22,698 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:22" (1/1) ... [2021-11-21 01:49:22,713 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:22" (1/1) ... [2021-11-21 01:49:22,713 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:22" (1/1) ... [2021-11-21 01:49:22,788 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:22" (1/1) ... [2021-11-21 01:49:22,806 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:22" (1/1) ... [2021-11-21 01:49:22,817 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:22" (1/1) ... [2021-11-21 01:49:22,832 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:49:22,834 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:49:22,834 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:49:22,834 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:49:22,835 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:22" (1/1) ... [2021-11-21 01:49:22,857 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:49:22,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:49:22,881 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:49:22,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:49:22,940 INFO L130 BoogieDeclarations]: Found specification of procedure zf_timer_off [2021-11-21 01:49:22,940 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_timer_off [2021-11-21 01:49:22,941 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~C_UINT~X~C_ULONG~TO~C_INT [2021-11-21 01:49:22,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~C_UINT~X~C_ULONG~TO~C_INT [2021-11-21 01:49:22,941 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-21 01:49:22,941 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_atomic_begin [2021-11-21 01:49:22,941 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-21 01:49:22,941 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-21 01:49:22,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 01:49:22,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-21 01:49:22,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-21 01:49:22,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-21 01:49:22,942 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-21 01:49:22,942 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-21 01:49:22,942 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-21 01:49:22,942 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_atomic_end [2021-11-21 01:49:22,942 INFO L130 BoogieDeclarations]: Found specification of procedure zf_get_control [2021-11-21 01:49:22,942 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_get_control [2021-11-21 01:49:22,942 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2021-11-21 01:49:22,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2021-11-21 01:49:22,943 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 01:49:22,943 INFO L130 BoogieDeclarations]: Found specification of procedure request_region [2021-11-21 01:49:22,943 INFO L138 BoogieDeclarations]: Found implementation of procedure request_region [2021-11-21 01:49:22,943 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:49:22,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 01:49:22,943 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-21 01:49:22,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-21 01:49:22,943 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irqsave [2021-11-21 01:49:22,944 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irqsave [2021-11-21 01:49:22,944 INFO L130 BoogieDeclarations]: Found specification of procedure release_region [2021-11-21 01:49:22,944 INFO L138 BoogieDeclarations]: Found implementation of procedure release_region [2021-11-21 01:49:22,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:49:22,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:49:22,944 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_init [2021-11-21 01:49:22,944 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_init [2021-11-21 01:49:22,944 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-21 01:49:22,944 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-21 01:49:22,945 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-21 01:49:22,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-21 01:49:22,945 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-21 01:49:22,945 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-21 01:49:22,945 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2021-11-21 01:49:22,945 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2021-11-21 01:49:22,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 01:49:22,945 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 01:49:22,945 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2021-11-21 01:49:22,946 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2021-11-21 01:49:22,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-21 01:49:22,946 INFO L130 BoogieDeclarations]: Found specification of procedure cdev_add [2021-11-21 01:49:22,946 INFO L138 BoogieDeclarations]: Found implementation of procedure cdev_add [2021-11-21 01:49:22,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-21 01:49:22,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-21 01:49:22,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-21 01:49:22,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-21 01:49:22,946 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2021-11-21 01:49:22,947 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2021-11-21 01:49:22,947 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2021-11-21 01:49:22,947 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2021-11-21 01:49:22,947 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2021-11-21 01:49:22,947 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2021-11-21 01:49:22,947 INFO L130 BoogieDeclarations]: Found specification of procedure misc_deregister [2021-11-21 01:49:22,947 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_deregister [2021-11-21 01:49:22,947 INFO L130 BoogieDeclarations]: Found specification of procedure assert_context_process [2021-11-21 01:49:22,947 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_context_process [2021-11-21 01:49:22,948 INFO L130 BoogieDeclarations]: Found specification of procedure zf_set_control [2021-11-21 01:49:22,948 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_set_control [2021-11-21 01:49:22,948 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~C_ULONG~X~$Pointer$~TO~C_LONG [2021-11-21 01:49:22,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~C_ULONG~X~$Pointer$~TO~C_LONG [2021-11-21 01:49:22,948 INFO L130 BoogieDeclarations]: Found specification of procedure zf_readw [2021-11-21 01:49:22,948 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_readw [2021-11-21 01:49:22,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-21 01:49:22,948 INFO L130 BoogieDeclarations]: Found specification of procedure zf_ping [2021-11-21 01:49:22,948 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_ping [2021-11-21 01:49:22,949 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-21 01:49:22,949 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-21 01:49:22,949 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~C_ULONG~TO~VOID [2021-11-21 01:49:22,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~C_ULONG~TO~VOID [2021-11-21 01:49:23,338 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:49:23,340 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:49:28,865 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:49:28,879 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:49:28,883 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-21 01:49:28,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:49:28 BoogieIcfgContainer [2021-11-21 01:49:28,900 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:49:28,902 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:49:28,903 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:49:28,906 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:49:28,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:49:19" (1/3) ... [2021-11-21 01:49:28,908 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2442b8de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:49:28, skipping insertion in model container [2021-11-21 01:49:28,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:49:22" (2/3) ... [2021-11-21 01:49:28,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2442b8de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:49:28, skipping insertion in model container [2021-11-21 01:49:28,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:49:28" (3/3) ... [2021-11-21 01:49:28,915 INFO L111 eAbstractionObserver]: Analyzing ICFG ddv_machzwd_pthread_mutex_unlock.i [2021-11-21 01:49:28,921 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:49:28,922 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 205 error locations. [2021-11-21 01:49:28,974 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:49:28,984 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 01:49:28,984 INFO L340 AbstractCegarLoop]: Starting to check reachability of 205 error locations. [2021-11-21 01:49:29,023 INFO L276 IsEmpty]: Start isEmpty. Operand has 666 states, 356 states have (on average 1.8202247191011236) internal successors, (648), 566 states have internal predecessors, (648), 78 states have call successors, (78), 26 states have call predecessors, (78), 26 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2021-11-21 01:49:29,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-21 01:49:29,032 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:49:29,033 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-21 01:49:29,033 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting spin_lock_initErr0REQUIRES_VIOLATION === [spin_lock_initErr0REQUIRES_VIOLATION, spin_lock_initErr1REQUIRES_VIOLATION, spin_lock_initErr2REQUIRES_VIOLATION, spin_lock_initErr3REQUIRES_VIOLATION (and 201 more)] === [2021-11-21 01:49:29,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:49:29,039 INFO L85 PathProgramCache]: Analyzing trace with hash 333908101, now seen corresponding path program 1 times [2021-11-21 01:49:29,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:49:29,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1322580911] [2021-11-21 01:49:29,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:49:29,060 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:49:29,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:49:29,063 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:49:29,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-21 01:49:29,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:49:29,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 01:49:29,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:49:29,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:49:29,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:49:29,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:49:29,690 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:49:29,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1322580911] [2021-11-21 01:49:29,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1322580911] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:49:29,691 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:49:29,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-11-21 01:49:29,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018117327] [2021-11-21 01:49:29,698 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:49:29,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-21 01:49:29,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:49:29,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-21 01:49:29,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:49:29,745 INFO L87 Difference]: Start difference. First operand has 666 states, 356 states have (on average 1.8202247191011236) internal successors, (648), 566 states have internal predecessors, (648), 78 states have call successors, (78), 26 states have call predecessors, (78), 26 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) Second operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:49:31,792 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:49:33,803 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:49:35,817 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:49:39,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:49:39,583 INFO L93 Difference]: Finished difference Result 1203 states and 1442 transitions. [2021-11-21 01:49:39,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:49:39,599 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-21 01:49:39,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:49:39,630 INFO L225 Difference]: With dead ends: 1203 [2021-11-21 01:49:39,630 INFO L226 Difference]: Without dead ends: 1199 [2021-11-21 01:49:39,631 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-11-21 01:49:39,639 INFO L933 BasicCegarLoop]: 758 mSDtfsCounter, 695 mSDsluCounter, 2850 mSDsCounter, 0 mSdLazyCounter, 1677 mSolverCounterSat, 6 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 696 SdHoareTripleChecker+Valid, 3608 SdHoareTripleChecker+Invalid, 1686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1677 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:49:39,644 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [696 Valid, 3608 Invalid, 1686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1677 Invalid, 3 Unknown, 0 Unchecked, 9.6s Time] [2021-11-21 01:49:39,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1199 states. [2021-11-21 01:49:39,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1199 to 986. [2021-11-21 01:49:39,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 986 states, 594 states have (on average 1.8013468013468013) internal successors, (1070), 813 states have internal predecessors, (1070), 138 states have call successors, (138), 50 states have call predecessors, (138), 50 states have return successors, (138), 131 states have call predecessors, (138), 138 states have call successors, (138) [2021-11-21 01:49:39,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 986 states to 986 states and 1346 transitions. [2021-11-21 01:49:39,764 INFO L78 Accepts]: Start accepts. Automaton has 986 states and 1346 transitions. Word has length 5 [2021-11-21 01:49:39,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:49:39,764 INFO L470 AbstractCegarLoop]: Abstraction has 986 states and 1346 transitions. [2021-11-21 01:49:39,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:49:39,765 INFO L276 IsEmpty]: Start isEmpty. Operand 986 states and 1346 transitions. [2021-11-21 01:49:39,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-21 01:49:39,765 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:49:39,765 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-21 01:49:39,787 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-21 01:49:39,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:49:39,987 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting spin_lock_initErr1REQUIRES_VIOLATION === [spin_lock_initErr0REQUIRES_VIOLATION, spin_lock_initErr1REQUIRES_VIOLATION, spin_lock_initErr2REQUIRES_VIOLATION, spin_lock_initErr3REQUIRES_VIOLATION (and 201 more)] === [2021-11-21 01:49:39,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:49:39,987 INFO L85 PathProgramCache]: Analyzing trace with hash 333908102, now seen corresponding path program 1 times [2021-11-21 01:49:39,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:49:39,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1534173235] [2021-11-21 01:49:39,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:49:39,989 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:49:39,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:49:39,990 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:49:40,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-21 01:49:40,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:49:40,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-21 01:49:40,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:49:40,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:49:40,419 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:49:40,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:49:40,624 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:49:40,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1534173235] [2021-11-21 01:49:40,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1534173235] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:49:40,625 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:49:40,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-11-21 01:49:40,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452932452] [2021-11-21 01:49:40,625 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:49:40,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-21 01:49:40,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:49:40,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-21 01:49:40,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:49:40,627 INFO L87 Difference]: Start difference. First operand 986 states and 1346 transitions. Second operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:49:42,656 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:49:44,662 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:49:46,672 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:49:53,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:49:53,055 INFO L93 Difference]: Finished difference Result 1343 states and 1686 transitions. [2021-11-21 01:49:53,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:49:53,056 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-21 01:49:53,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:49:53,066 INFO L225 Difference]: With dead ends: 1343 [2021-11-21 01:49:53,067 INFO L226 Difference]: Without dead ends: 1343 [2021-11-21 01:49:53,067 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-21 01:49:53,068 INFO L933 BasicCegarLoop]: 860 mSDtfsCounter, 764 mSDsluCounter, 2516 mSDsCounter, 0 mSdLazyCounter, 1462 mSolverCounterSat, 63 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 767 SdHoareTripleChecker+Valid, 3376 SdHoareTripleChecker+Invalid, 1528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1462 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:49:53,069 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [767 Valid, 3376 Invalid, 1528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1462 Invalid, 3 Unknown, 0 Unchecked, 12.2s Time] [2021-11-21 01:49:53,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1343 states. [2021-11-21 01:49:53,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1343 to 1209. [2021-11-21 01:49:53,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1209 states, 741 states have (on average 1.7543859649122806) internal successors, (1300), 962 states have internal predecessors, (1300), 184 states have call successors, (184), 80 states have call predecessors, (184), 80 states have return successors, (184), 177 states have call predecessors, (184), 184 states have call successors, (184) [2021-11-21 01:49:53,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1209 states to 1209 states and 1668 transitions. [2021-11-21 01:49:53,131 INFO L78 Accepts]: Start accepts. Automaton has 1209 states and 1668 transitions. Word has length 5 [2021-11-21 01:49:53,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:49:53,131 INFO L470 AbstractCegarLoop]: Abstraction has 1209 states and 1668 transitions. [2021-11-21 01:49:53,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:49:53,132 INFO L276 IsEmpty]: Start isEmpty. Operand 1209 states and 1668 transitions. [2021-11-21 01:49:53,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-21 01:49:53,132 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:49:53,132 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:49:53,148 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-21 01:49:53,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:49:53,348 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [spin_lock_initErr0REQUIRES_VIOLATION, spin_lock_initErr1REQUIRES_VIOLATION, spin_lock_initErr2REQUIRES_VIOLATION, spin_lock_initErr3REQUIRES_VIOLATION (and 201 more)] === [2021-11-21 01:49:53,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:49:53,349 INFO L85 PathProgramCache]: Analyzing trace with hash -863937403, now seen corresponding path program 1 times [2021-11-21 01:49:53,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:49:53,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2009820413] [2021-11-21 01:49:53,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:49:53,350 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:49:53,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:49:53,351 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:49:53,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-21 01:49:53,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:49:53,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:49:53,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:49:53,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:49:53,733 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:49:53,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:49:53,770 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:49:53,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2009820413] [2021-11-21 01:49:53,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2009820413] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:49:53,771 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:49:53,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 2] imperfect sequences [] total 3 [2021-11-21 01:49:53,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825231320] [2021-11-21 01:49:53,771 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:49:53,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:49:53,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:49:53,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:49:53,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:49:53,772 INFO L87 Difference]: Start difference. First operand 1209 states and 1668 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 01:49:56,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:49:56,524 INFO L93 Difference]: Finished difference Result 2047 states and 2548 transitions. [2021-11-21 01:49:56,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:49:56,524 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 11 [2021-11-21 01:49:56,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:49:56,538 INFO L225 Difference]: With dead ends: 2047 [2021-11-21 01:49:56,538 INFO L226 Difference]: Without dead ends: 2047 [2021-11-21 01:49:56,538 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:49:56,540 INFO L933 BasicCegarLoop]: 832 mSDtfsCounter, 1286 mSDsluCounter, 1416 mSDsCounter, 0 mSdLazyCounter, 855 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1286 SdHoareTripleChecker+Valid, 2248 SdHoareTripleChecker+Invalid, 870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-11-21 01:49:56,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1286 Valid, 2248 Invalid, 870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 855 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-11-21 01:49:56,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2047 states. [2021-11-21 01:49:56,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2047 to 1617. [2021-11-21 01:49:56,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1617 states, 1036 states have (on average 1.750965250965251) internal successors, (1814), 1266 states have internal predecessors, (1814), 267 states have call successors, (267), 114 states have call predecessors, (267), 114 states have return successors, (267), 252 states have call predecessors, (267), 267 states have call successors, (267) [2021-11-21 01:49:56,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1617 states to 1617 states and 2348 transitions. [2021-11-21 01:49:56,608 INFO L78 Accepts]: Start accepts. Automaton has 1617 states and 2348 transitions. Word has length 11 [2021-11-21 01:49:56,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:49:56,609 INFO L470 AbstractCegarLoop]: Abstraction has 1617 states and 2348 transitions. [2021-11-21 01:49:56,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 01:49:56,609 INFO L276 IsEmpty]: Start isEmpty. Operand 1617 states and 2348 transitions. [2021-11-21 01:49:56,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-21 01:49:56,610 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:49:56,610 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:49:56,624 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-21 01:49:56,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:49:56,825 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [spin_lock_initErr0REQUIRES_VIOLATION, spin_lock_initErr1REQUIRES_VIOLATION, spin_lock_initErr2REQUIRES_VIOLATION, spin_lock_initErr3REQUIRES_VIOLATION (and 201 more)] === [2021-11-21 01:49:56,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:49:56,826 INFO L85 PathProgramCache]: Analyzing trace with hash -863937402, now seen corresponding path program 1 times [2021-11-21 01:49:56,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:49:56,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1980327855] [2021-11-21 01:49:56,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:49:56,827 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:49:56,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:49:56,828 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:49:56,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-21 01:49:57,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:49:57,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 01:49:57,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:49:57,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:49:57,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:49:57,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:49:57,536 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:49:57,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1980327855] [2021-11-21 01:49:57,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1980327855] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:49:57,537 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:49:57,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [] total 5 [2021-11-21 01:49:57,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100228943] [2021-11-21 01:49:57,537 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:49:57,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 01:49:57,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:49:57,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 01:49:57,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-21 01:49:57,538 INFO L87 Difference]: Start difference. First operand 1617 states and 2348 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 01:49:59,563 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:50:01,570 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:50:08,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:50:08,324 INFO L93 Difference]: Finished difference Result 1889 states and 2538 transitions. [2021-11-21 01:50:08,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:50:08,325 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 11 [2021-11-21 01:50:08,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:50:08,336 INFO L225 Difference]: With dead ends: 1889 [2021-11-21 01:50:08,336 INFO L226 Difference]: Without dead ends: 1889 [2021-11-21 01:50:08,336 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-21 01:50:08,338 INFO L933 BasicCegarLoop]: 852 mSDtfsCounter, 831 mSDsluCounter, 2444 mSDsCounter, 0 mSdLazyCounter, 1424 mSolverCounterSat, 40 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 831 SdHoareTripleChecker+Valid, 3296 SdHoareTripleChecker+Invalid, 1466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1424 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2021-11-21 01:50:08,338 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [831 Valid, 3296 Invalid, 1466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1424 Invalid, 2 Unknown, 0 Unchecked, 10.7s Time] [2021-11-21 01:50:08,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1889 states. [2021-11-21 01:50:08,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1889 to 1623. [2021-11-21 01:50:08,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1623 states, 1042 states have (on average 1.7476007677543186) internal successors, (1821), 1272 states have internal predecessors, (1821), 267 states have call successors, (267), 114 states have call predecessors, (267), 114 states have return successors, (267), 252 states have call predecessors, (267), 267 states have call successors, (267) [2021-11-21 01:50:08,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1623 states to 1623 states and 2355 transitions. [2021-11-21 01:50:08,396 INFO L78 Accepts]: Start accepts. Automaton has 1623 states and 2355 transitions. Word has length 11 [2021-11-21 01:50:08,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:50:08,397 INFO L470 AbstractCegarLoop]: Abstraction has 1623 states and 2355 transitions. [2021-11-21 01:50:08,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 01:50:08,397 INFO L276 IsEmpty]: Start isEmpty. Operand 1623 states and 2355 transitions. [2021-11-21 01:50:08,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-21 01:50:08,398 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:50:08,398 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:50:08,417 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-21 01:50:08,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:50:08,616 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [spin_lock_initErr0REQUIRES_VIOLATION, spin_lock_initErr1REQUIRES_VIOLATION, spin_lock_initErr2REQUIRES_VIOLATION, spin_lock_initErr3REQUIRES_VIOLATION (and 201 more)] === [2021-11-21 01:50:08,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:50:08,617 INFO L85 PathProgramCache]: Analyzing trace with hash -833526471, now seen corresponding path program 1 times [2021-11-21 01:50:08,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:50:08,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1083823898] [2021-11-21 01:50:08,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:50:08,618 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:50:08,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:50:08,618 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:50:08,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-21 01:50:08,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:50:08,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:50:08,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:50:08,974 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:50:08,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:50:09,020 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:50:09,021 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:50:09,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1083823898] [2021-11-21 01:50:09,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1083823898] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:50:09,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1087570587] [2021-11-21 01:50:09,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:50:09,021 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-21 01:50:09,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-21 01:50:09,023 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-21 01:50:09,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-21 01:50:09,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:50:09,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:50:09,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:50:09,570 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:50:09,570 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:50:09,607 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:50:09,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1087570587] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:50:09,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [999537851] [2021-11-21 01:50:09,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:50:09,608 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:50:09,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:50:09,626 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:50:09,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-21 01:50:09,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:50:09,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:50:09,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:50:09,965 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 01:50:09,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:50:10,021 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 01:50:10,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [999537851] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:50:10,022 INFO L186 FreeRefinementEngine]: Found 2 perfect and 4 imperfect interpolant sequences. [2021-11-21 01:50:10,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 2] imperfect sequences [4, 4, 4, 4] total 8 [2021-11-21 01:50:10,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765747108] [2021-11-21 01:50:10,022 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:50:10,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:50:10,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:50:10,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:50:10,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:50:10,023 INFO L87 Difference]: Start difference. First operand 1623 states and 2355 transitions. Second operand has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 01:50:12,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:50:12,203 INFO L93 Difference]: Finished difference Result 2811 states and 3794 transitions. [2021-11-21 01:50:12,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:50:12,203 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2021-11-21 01:50:12,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:50:12,218 INFO L225 Difference]: With dead ends: 2811 [2021-11-21 01:50:12,219 INFO L226 Difference]: Without dead ends: 2811 [2021-11-21 01:50:12,219 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:50:12,220 INFO L933 BasicCegarLoop]: 796 mSDtfsCounter, 1773 mSDsluCounter, 869 mSDsCounter, 0 mSdLazyCounter, 646 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1773 SdHoareTripleChecker+Valid, 1665 SdHoareTripleChecker+Invalid, 793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:50:12,220 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1773 Valid, 1665 Invalid, 793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 646 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-21 01:50:12,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2811 states. [2021-11-21 01:50:12,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2811 to 2399. [2021-11-21 01:50:12,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2399 states, 1592 states have (on average 1.7160804020100502) internal successors, (2732), 1840 states have internal predecessors, (2732), 431 states have call successors, (431), 184 states have call predecessors, (431), 184 states have return successors, (431), 400 states have call predecessors, (431), 431 states have call successors, (431) [2021-11-21 01:50:12,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2399 states to 2399 states and 3594 transitions. [2021-11-21 01:50:12,305 INFO L78 Accepts]: Start accepts. Automaton has 2399 states and 3594 transitions. Word has length 16 [2021-11-21 01:50:12,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:50:12,306 INFO L470 AbstractCegarLoop]: Abstraction has 2399 states and 3594 transitions. [2021-11-21 01:50:12,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 01:50:12,306 INFO L276 IsEmpty]: Start isEmpty. Operand 2399 states and 3594 transitions. [2021-11-21 01:50:12,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-21 01:50:12,307 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:50:12,307 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:50:12,346 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-21 01:50:12,533 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2021-11-21 01:50:12,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-21 01:50:12,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:50:12,922 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [spin_lock_initErr0REQUIRES_VIOLATION, spin_lock_initErr1REQUIRES_VIOLATION, spin_lock_initErr2REQUIRES_VIOLATION, spin_lock_initErr3REQUIRES_VIOLATION (and 201 more)] === [2021-11-21 01:50:12,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:50:12,923 INFO L85 PathProgramCache]: Analyzing trace with hash -833526470, now seen corresponding path program 1 times [2021-11-21 01:50:12,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:50:12,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1296535758] [2021-11-21 01:50:12,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:50:12,923 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:50:12,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:50:12,924 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:50:12,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-21 01:50:13,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:50:13,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:50:13,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:50:13,228 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:50:13,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:50:13,292 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:50:13,292 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:50:13,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1296535758] [2021-11-21 01:50:13,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1296535758] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:50:13,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [758623411] [2021-11-21 01:50:13,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:50:13,293 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-21 01:50:13,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-21 01:50:13,298 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-21 01:50:13,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-21 01:50:13,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:50:13,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-21 01:50:13,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:50:13,922 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:50:13,922 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:50:13,959 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:50:13,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [758623411] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:50:13,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112884689] [2021-11-21 01:50:13,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:50:13,959 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:50:13,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:50:13,960 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:50:13,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-21 01:50:14,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:50:14,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 01:50:14,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:50:14,402 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 01:50:14,403 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:50:14,709 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-21 01:50:14,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112884689] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-21 01:50:14,710 INFO L186 FreeRefinementEngine]: Found 2 perfect and 4 imperfect interpolant sequences. [2021-11-21 01:50:14,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [4, 4, 4, 4] total 10 [2021-11-21 01:50:14,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130685188] [2021-11-21 01:50:14,710 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-21 01:50:14,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 01:50:14,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:50:14,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 01:50:14,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-21 01:50:14,711 INFO L87 Difference]: Start difference. First operand 2399 states and 3594 transitions. Second operand has 6 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 01:50:16,729 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:50:18,738 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:50:23,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:50:23,638 INFO L93 Difference]: Finished difference Result 2526 states and 3625 transitions. [2021-11-21 01:50:23,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:50:23,639 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2021-11-21 01:50:23,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:50:23,653 INFO L225 Difference]: With dead ends: 2526 [2021-11-21 01:50:23,653 INFO L226 Difference]: Without dead ends: 2526 [2021-11-21 01:50:23,653 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-11-21 01:50:23,654 INFO L933 BasicCegarLoop]: 850 mSDtfsCounter, 557 mSDsluCounter, 1835 mSDsCounter, 0 mSdLazyCounter, 1104 mSolverCounterSat, 8 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 557 SdHoareTripleChecker+Valid, 2685 SdHoareTripleChecker+Invalid, 1114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1104 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2021-11-21 01:50:23,654 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [557 Valid, 2685 Invalid, 1114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1104 Invalid, 2 Unknown, 0 Unchecked, 8.8s Time] [2021-11-21 01:50:23,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2526 states. [2021-11-21 01:50:23,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2526 to 2401. [2021-11-21 01:50:23,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2401 states, 1594 states have (on average 1.7151819322459223) internal successors, (2734), 1842 states have internal predecessors, (2734), 431 states have call successors, (431), 184 states have call predecessors, (431), 184 states have return successors, (431), 400 states have call predecessors, (431), 431 states have call successors, (431) [2021-11-21 01:50:23,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2401 states to 2401 states and 3596 transitions. [2021-11-21 01:50:23,754 INFO L78 Accepts]: Start accepts. Automaton has 2401 states and 3596 transitions. Word has length 16 [2021-11-21 01:50:23,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:50:23,754 INFO L470 AbstractCegarLoop]: Abstraction has 2401 states and 3596 transitions. [2021-11-21 01:50:23,754 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 01:50:23,755 INFO L276 IsEmpty]: Start isEmpty. Operand 2401 states and 3596 transitions. [2021-11-21 01:50:23,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-21 01:50:23,755 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:50:23,755 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:50:23,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-11-21 01:50:23,998 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-21 01:50:24,190 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-21 01:50:24,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 [2021-11-21 01:50:24,370 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [spin_lock_initErr0REQUIRES_VIOLATION, spin_lock_initErr1REQUIRES_VIOLATION, spin_lock_initErr2REQUIRES_VIOLATION, spin_lock_initErr3REQUIRES_VIOLATION (and 201 more)] === [2021-11-21 01:50:24,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:50:24,370 INFO L85 PathProgramCache]: Analyzing trace with hash -67919898, now seen corresponding path program 1 times [2021-11-21 01:50:24,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:50:24,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1423961728] [2021-11-21 01:50:24,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:50:24,371 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:50:24,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:50:24,373 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:50:24,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-21 01:50:24,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:50:24,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-21 01:50:24,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:50:24,998 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:50:24,998 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:50:25,528 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:50:25,529 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:50:25,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1423961728] [2021-11-21 01:50:25,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1423961728] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:50:25,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [322804209] [2021-11-21 01:50:25,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:50:25,530 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-21 01:50:25,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-21 01:50:25,531 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-21 01:50:25,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-21 01:50:26,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:50:26,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-21 01:50:26,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:50:26,266 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:50:26,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:50:26,502 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:50:26,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [322804209] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:50:26,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965811954] [2021-11-21 01:50:26,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:50:26,503 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:50:26,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:50:26,504 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:50:26,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-21 01:50:26,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:50:26,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-21 01:50:26,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:50:26,925 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:50:26,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:50:27,174 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:50:27,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [965811954] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:50:27,174 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-21 01:50:27,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4, 5, 4, 5] total 9 [2021-11-21 01:50:27,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070522627] [2021-11-21 01:50:27,175 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-21 01:50:27,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-21 01:50:27,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:50:27,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-21 01:50:27,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-21 01:50:27,176 INFO L87 Difference]: Start difference. First operand 2401 states and 3596 transitions. Second operand has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 01:50:29,197 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:50:31,203 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:50:33,210 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:50:42,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:50:42,065 INFO L93 Difference]: Finished difference Result 2998 states and 4330 transitions. [2021-11-21 01:50:42,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-21 01:50:42,065 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2021-11-21 01:50:42,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:50:42,081 INFO L225 Difference]: With dead ends: 2998 [2021-11-21 01:50:42,081 INFO L226 Difference]: Without dead ends: 2998 [2021-11-21 01:50:42,081 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=73, Invalid=109, Unknown=0, NotChecked=0, Total=182 [2021-11-21 01:50:42,082 INFO L933 BasicCegarLoop]: 827 mSDtfsCounter, 1505 mSDsluCounter, 2439 mSDsCounter, 0 mSdLazyCounter, 1506 mSolverCounterSat, 210 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1517 SdHoareTripleChecker+Valid, 3266 SdHoareTripleChecker+Invalid, 1719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 1506 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.3s IncrementalHoareTripleChecker+Time [2021-11-21 01:50:42,083 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1517 Valid, 3266 Invalid, 1719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 1506 Invalid, 3 Unknown, 0 Unchecked, 14.3s Time] [2021-11-21 01:50:42,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2998 states. [2021-11-21 01:50:42,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2998 to 2510. [2021-11-21 01:50:42,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2510 states, 1666 states have (on average 1.702280912364946) internal successors, (2836), 1916 states have internal predecessors, (2836), 456 states have call successors, (456), 198 states have call predecessors, (456), 198 states have return successors, (456), 422 states have call predecessors, (456), 456 states have call successors, (456) [2021-11-21 01:50:42,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2510 states to 2510 states and 3748 transitions. [2021-11-21 01:50:42,161 INFO L78 Accepts]: Start accepts. Automaton has 2510 states and 3748 transitions. Word has length 17 [2021-11-21 01:50:42,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:50:42,162 INFO L470 AbstractCegarLoop]: Abstraction has 2510 states and 3748 transitions. [2021-11-21 01:50:42,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-21 01:50:42,162 INFO L276 IsEmpty]: Start isEmpty. Operand 2510 states and 3748 transitions. [2021-11-21 01:50:42,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-21 01:50:42,163 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:50:42,163 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:50:42,185 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-21 01:50:42,381 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (13)] Ended with exit code 0 [2021-11-21 01:50:42,600 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-11-21 01:50:42,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:50:42,778 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [spin_lock_initErr0REQUIRES_VIOLATION, spin_lock_initErr1REQUIRES_VIOLATION, spin_lock_initErr2REQUIRES_VIOLATION, spin_lock_initErr3REQUIRES_VIOLATION (and 201 more)] === [2021-11-21 01:50:42,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:50:42,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1241117018, now seen corresponding path program 2 times [2021-11-21 01:50:42,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:50:42,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1236519472] [2021-11-21 01:50:42,779 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-21 01:50:42,779 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:50:42,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:50:42,780 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:50:42,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-21 01:50:43,101 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-21 01:50:43,102 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:50:43,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-21 01:50:43,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:50:43,698 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:50:43,698 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:50:45,406 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:50:45,406 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:50:45,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1236519472] [2021-11-21 01:50:45,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1236519472] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:50:45,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [408526078] [2021-11-21 01:50:45,406 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-21 01:50:45,406 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-21 01:50:45,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-21 01:50:45,407 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-21 01:50:45,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2021-11-21 01:50:46,322 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-21 01:50:46,322 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:50:46,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-21 01:50:46,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:50:46,729 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:50:46,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:50:48,727 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:50:48,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [408526078] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:50:48,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701068147] [2021-11-21 01:50:48,727 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-21 01:50:48,728 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:50:48,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:50:48,737 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:50:48,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-21 01:51:04,734 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-21 01:51:04,734 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:51:04,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-21 01:51:04,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:51:05,147 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:51:05,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:51:07,594 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:51:07,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [701068147] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:51:07,594 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-21 01:51:07,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 8, 9, 8, 10] total 30 [2021-11-21 01:51:07,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802735977] [2021-11-21 01:51:07,595 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-21 01:51:07,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-21 01:51:07,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 01:51:07,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-21 01:51:07,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=713, Unknown=0, NotChecked=0, Total=930 [2021-11-21 01:51:07,597 INFO L87 Difference]: Start difference. First operand 2510 states and 3748 transitions. Second operand has 31 states, 30 states have (on average 3.033333333333333) internal successors, (91), 31 states have internal predecessors, (91), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 01:51:09,620 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:51:11,628 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:51:13,637 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 01:52:19,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:52:19,658 INFO L93 Difference]: Finished difference Result 3501 states and 4875 transitions. [2021-11-21 01:52:19,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-21 01:52:19,660 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 3.033333333333333) internal successors, (91), 31 states have internal predecessors, (91), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 29 [2021-11-21 01:52:19,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:52:19,678 INFO L225 Difference]: With dead ends: 3501 [2021-11-21 01:52:19,678 INFO L226 Difference]: Without dead ends: 3501 [2021-11-21 01:52:19,679 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 559 ImplicationChecksByTransitivity, 14.5s TimeCoverageRelationStatistics Valid=611, Invalid=1839, Unknown=0, NotChecked=0, Total=2450 [2021-11-21 01:52:19,680 INFO L933 BasicCegarLoop]: 736 mSDtfsCounter, 4225 mSDsluCounter, 12990 mSDsCounter, 0 mSdLazyCounter, 11048 mSolverCounterSat, 602 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 56.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4237 SdHoareTripleChecker+Valid, 13726 SdHoareTripleChecker+Invalid, 11653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 602 IncrementalHoareTripleChecker+Valid, 11048 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 61.7s IncrementalHoareTripleChecker+Time [2021-11-21 01:52:19,681 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4237 Valid, 13726 Invalid, 11653 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [602 Valid, 11048 Invalid, 3 Unknown, 0 Unchecked, 61.7s Time] [2021-11-21 01:52:19,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3501 states. [2021-11-21 01:52:19,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3501 to 2572. [2021-11-21 01:52:19,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2572 states, 1728 states have (on average 1.7008101851851851) internal successors, (2939), 1973 states have internal predecessors, (2939), 456 states have call successors, (456), 198 states have call predecessors, (456), 198 states have return successors, (456), 427 states have call predecessors, (456), 456 states have call successors, (456) [2021-11-21 01:52:19,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2572 states to 2572 states and 3851 transitions. [2021-11-21 01:52:19,770 INFO L78 Accepts]: Start accepts. Automaton has 2572 states and 3851 transitions. Word has length 29 [2021-11-21 01:52:19,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:52:19,771 INFO L470 AbstractCegarLoop]: Abstraction has 2572 states and 3851 transitions. [2021-11-21 01:52:19,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 3.033333333333333) internal successors, (91), 31 states have internal predecessors, (91), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 01:52:19,771 INFO L276 IsEmpty]: Start isEmpty. Operand 2572 states and 3851 transitions. [2021-11-21 01:52:19,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-21 01:52:19,773 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:52:19,773 INFO L514 BasicCegarLoop]: trace histogram [15, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:52:19,817 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-21 01:52:20,021 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-21 01:52:20,206 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (16)] Ended with exit code 0 [2021-11-21 01:52:20,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt [2021-11-21 01:52:20,402 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [spin_lock_initErr0REQUIRES_VIOLATION, spin_lock_initErr1REQUIRES_VIOLATION, spin_lock_initErr2REQUIRES_VIOLATION, spin_lock_initErr3REQUIRES_VIOLATION (and 201 more)] === [2021-11-21 01:52:20,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:52:20,402 INFO L85 PathProgramCache]: Analyzing trace with hash 495619110, now seen corresponding path program 3 times [2021-11-21 01:52:20,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-21 01:52:20,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1975160847] [2021-11-21 01:52:20,403 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 01:52:20,403 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-21 01:52:20,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/mathsat [2021-11-21 01:52:20,404 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-21 01:52:20,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-21 01:52:21,540 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2021-11-21 01:52:21,540 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:52:21,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-21 01:52:21,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:52:21,804 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 134 proven. 145 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-21 01:52:21,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:52:22,352 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 134 proven. 145 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-21 01:52:22,352 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-21 01:52:22,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1975160847] [2021-11-21 01:52:22,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1975160847] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:52:22,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [949088857] [2021-11-21 01:52:22,353 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 01:52:22,353 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-21 01:52:22,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/cvc4 [2021-11-21 01:52:22,354 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-21 01:52:22,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-11-21 01:52:24,941 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2021-11-21 01:52:24,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:52:24,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-21 01:52:24,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:52:26,086 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 105 proven. 187 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-21 01:52:26,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:52:45,302 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:52:45,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [949088857] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:52:45,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124951338] [2021-11-21 01:52:45,303 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 01:52:45,303 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:52:45,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:52:45,304 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:52:45,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fd52eec-2270-49bb-b19e-0097d57bd8d0/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-21 02:02:22,306 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2021-11-21 02:02:22,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 02:02:22,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-21 02:02:22,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 02:02:22,977 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 128 proven. 155 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-21 02:02:22,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 02:02:37,932 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 02:02:37,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1124951338] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 02:02:37,932 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-21 02:02:37,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 14, 26, 13, 19] total 79 [2021-11-21 02:02:37,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381238580] [2021-11-21 02:02:37,933 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-21 02:02:37,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2021-11-21 02:02:37,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-21 02:02:37,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2021-11-21 02:02:37,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1032, Invalid=5130, Unknown=0, NotChecked=0, Total=6162 [2021-11-21 02:02:37,939 INFO L87 Difference]: Start difference. First operand 2572 states and 3851 transitions. Second operand has 79 states, 79 states have (on average 2.632911392405063) internal successors, (208), 79 states have internal predecessors, (208), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-21 02:02:39,960 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:02:41,969 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:02:43,979 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:02:45,988 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:02:47,996 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:02:50,006 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:02:52,017 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:02:54,026 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:02:56,036 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:02:58,048 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:03:00,054 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:03:02,063 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:03:04,072 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:03:06,085 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:03:08,097 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:03:10,111 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:03:12,121 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:03:14,132 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:03:16,141 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:03:18,151 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:03:20,159 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:03:22,170 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:03:24,179 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-21 02:03:26,190 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []