./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outl.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outl.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V --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 345f2c82068eea48aca6314e15d35413af585b08222f0693277bcfbc8625f6ae --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:08:17,412 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:08:17,414 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:08:17,462 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:08:17,463 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:08:17,464 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:08:17,466 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:08:17,468 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:08:17,470 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:08:17,471 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:08:17,473 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:08:17,477 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:08:17,478 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:08:17,479 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:08:17,483 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:08:17,486 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:08:17,487 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:08:17,493 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:08:17,495 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:08:17,499 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:08:17,508 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:08:17,509 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:08:17,511 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:08:17,520 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:08:17,523 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:08:17,524 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:08:17,524 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:08:17,525 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:08:17,526 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:08:17,527 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:08:17,530 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:08:17,531 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:08:17,532 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:08:17,534 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:08:17,535 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:08:17,536 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:08:17,537 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:08:17,538 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:08:17,538 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:08:17,539 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:08:17,540 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:08:17,541 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-23 02:08:17,589 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:08:17,592 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:08:17,592 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:08:17,593 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:08:17,594 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:08:17,594 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:08:17,594 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:08:17,594 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:08:17,595 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:08:17,595 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:08:17,596 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:08:17,596 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:08:17,597 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:08:17,597 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:08:17,597 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:08:17,598 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:08:17,598 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:08:17,598 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:08:17,599 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 02:08:17,599 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 02:08:17,599 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:08:17,600 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 02:08:17,600 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 02:08:17,600 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:08:17,600 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 02:08:17,600 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:08:17,601 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-23 02:08:17,601 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-23 02:08:17,601 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-23 02:08:17,602 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:08:17,602 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 02:08:17,602 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 02:08:17,602 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:08:17,603 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:08:17,603 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:08:17,603 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:08:17,603 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:08:17,604 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:08:17,604 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:08:17,604 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:08:17,606 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:08:17,606 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:08:17,607 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_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 345f2c82068eea48aca6314e15d35413af585b08222f0693277bcfbc8625f6ae [2021-11-23 02:08:17,883 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:08:17,918 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:08:17,921 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:08:17,922 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:08:17,923 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:08:17,925 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outl.i [2021-11-23 02:08:18,016 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/data/e1fa7ac82/775634d1be0c486286c78e25728d3071/FLAG3d76ba505 [2021-11-23 02:08:18,765 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:08:18,766 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outl.i [2021-11-23 02:08:18,791 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/data/e1fa7ac82/775634d1be0c486286c78e25728d3071/FLAG3d76ba505 [2021-11-23 02:08:18,846 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/data/e1fa7ac82/775634d1be0c486286c78e25728d3071 [2021-11-23 02:08:18,850 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:08:18,852 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:08:18,854 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:08:18,854 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:08:18,857 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:08:18,858 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:08:18" (1/1) ... [2021-11-23 02:08:18,862 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30ad3e42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:18, skipping insertion in model container [2021-11-23 02:08:18,862 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:08:18" (1/1) ... [2021-11-23 02:08:18,869 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:08:18,983 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:08:19,181 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_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outl.i[456,469] [2021-11-23 02:08:20,349 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:08:20,384 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) [2021-11-23 02:08:20,384 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@740bfcf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:20, skipping insertion in model container [2021-11-23 02:08:20,385 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:08:20,385 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-23 02:08:20,388 INFO L158 Benchmark]: Toolchain (without parser) took 1533.75ms. Allocated memory was 86.0MB in the beginning and 117.4MB in the end (delta: 31.5MB). Free memory was 46.6MB in the beginning and 64.2MB in the end (delta: -17.6MB). Peak memory consumption was 13.5MB. Max. memory is 16.1GB. [2021-11-23 02:08:20,390 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 86.0MB. Free memory was 57.1MB in the beginning and 57.1MB in the end (delta: 24.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:08:20,392 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1531.31ms. Allocated memory was 86.0MB in the beginning and 117.4MB in the end (delta: 31.5MB). Free memory was 46.5MB in the beginning and 64.2MB in the end (delta: -17.8MB). Peak memory consumption was 13.5MB. Max. memory is 16.1GB. [2021-11-23 02:08:20,394 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 86.0MB. Free memory was 57.1MB in the beginning and 57.1MB in the end (delta: 24.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1531.31ms. Allocated memory was 86.0MB in the beginning and 117.4MB in the end (delta: 31.5MB). Free memory was 46.5MB in the beginning and 64.2MB in the end (delta: -17.8MB). Peak memory consumption was 13.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2975]: 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_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outl.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V --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 345f2c82068eea48aca6314e15d35413af585b08222f0693277bcfbc8625f6ae --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:08:22,665 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:08:22,668 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:08:22,718 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:08:22,719 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:08:22,723 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:08:22,725 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:08:22,729 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:08:22,733 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:08:22,740 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:08:22,742 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:08:22,743 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:08:22,744 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:08:22,746 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:08:22,748 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:08:22,752 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:08:22,754 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:08:22,755 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:08:22,757 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:08:22,764 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:08:22,767 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:08:22,768 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:08:22,771 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:08:22,773 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:08:22,781 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:08:22,782 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:08:22,782 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:08:22,784 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:08:22,785 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:08:22,786 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:08:22,786 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:08:22,788 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:08:22,790 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:08:22,791 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:08:22,792 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:08:22,792 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:08:22,793 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:08:22,793 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:08:22,794 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:08:22,796 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:08:22,796 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:08:22,797 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-23 02:08:22,840 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:08:22,840 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:08:22,841 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:08:22,841 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:08:22,842 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:08:22,842 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:08:22,843 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:08:22,843 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:08:22,843 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:08:22,843 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:08:22,844 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:08:22,845 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:08:22,846 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 02:08:22,846 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 02:08:22,847 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:08:22,847 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 02:08:22,847 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 02:08:22,847 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:08:22,848 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 02:08:22,848 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:08:22,848 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-23 02:08:22,848 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-23 02:08:22,848 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-23 02:08:22,849 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:08:22,849 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 02:08:22,849 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 02:08:22,849 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 02:08:22,850 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 02:08:22,850 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:08:22,850 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:08:22,851 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 02:08:22,851 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:08:22,851 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:08:22,851 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:08:22,852 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:08:22,852 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 02:08:22,852 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 02:08:22,853 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:08:22,853 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:08:22,853 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_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 345f2c82068eea48aca6314e15d35413af585b08222f0693277bcfbc8625f6ae [2021-11-23 02:08:23,250 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:08:23,271 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:08:23,274 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:08:23,275 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:08:23,278 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:08:23,279 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outl.i [2021-11-23 02:08:23,353 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/data/5ac825775/f9eed8d770a14db0a03b39b561bb1c3e/FLAG3f6f806a5 [2021-11-23 02:08:24,195 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:08:24,196 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outl.i [2021-11-23 02:08:24,229 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/data/5ac825775/f9eed8d770a14db0a03b39b561bb1c3e/FLAG3f6f806a5 [2021-11-23 02:08:24,291 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/data/5ac825775/f9eed8d770a14db0a03b39b561bb1c3e [2021-11-23 02:08:24,293 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:08:24,295 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:08:24,296 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:08:24,296 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:08:24,300 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:08:24,301 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:08:24" (1/1) ... [2021-11-23 02:08:24,302 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d5b73e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:24, skipping insertion in model container [2021-11-23 02:08:24,302 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:08:24" (1/1) ... [2021-11-23 02:08:24,309 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:08:24,409 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:08:24,631 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_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outl.i[456,469] [2021-11-23 02:08:25,732 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:08:25,768 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-23 02:08:25,788 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:08:25,790 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_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outl.i[456,469] [2021-11-23 02:08:25,948 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:08:25,969 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:08:25,981 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_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outl.i[456,469] [2021-11-23 02:08:26,237 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:08:26,480 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:08:26,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:26 WrapperNode [2021-11-23 02:08:26,481 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:08:26,482 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:08:26,483 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:08:26,483 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:08:26,490 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:26" (1/1) ... [2021-11-23 02:08:26,588 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:26" (1/1) ... [2021-11-23 02:08:26,663 INFO L137 Inliner]: procedures = 482, calls = 839, calls flagged for inlining = 54, calls inlined = 37, statements flattened = 970 [2021-11-23 02:08:26,664 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:08:26,664 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:08:26,664 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:08:26,665 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:08:26,673 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:26" (1/1) ... [2021-11-23 02:08:26,674 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:26" (1/1) ... [2021-11-23 02:08:26,694 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:26" (1/1) ... [2021-11-23 02:08:26,695 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:26" (1/1) ... [2021-11-23 02:08:26,769 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:26" (1/1) ... [2021-11-23 02:08:26,801 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:26" (1/1) ... [2021-11-23 02:08:26,828 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:26" (1/1) ... [2021-11-23 02:08:26,841 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:08:26,842 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:08:26,842 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:08:26,842 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:08:26,843 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:26" (1/1) ... [2021-11-23 02:08:26,850 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:08:26,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:08:26,887 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:08:26,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:08:26,940 INFO L130 BoogieDeclarations]: Found specification of procedure zf_timer_off [2021-11-23 02:08:26,940 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_timer_off [2021-11-23 02:08:26,940 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~C_UINT~X~C_ULONG~TO~C_INT [2021-11-23 02:08:26,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~C_UINT~X~C_ULONG~TO~C_INT [2021-11-23 02:08:26,941 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-23 02:08:26,941 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_atomic_begin [2021-11-23 02:08:26,941 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-23 02:08:26,941 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-23 02:08:26,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 02:08:26,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-23 02:08:26,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 02:08:26,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-23 02:08:26,942 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-23 02:08:26,942 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-23 02:08:26,942 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-23 02:08:26,943 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_atomic_end [2021-11-23 02:08:26,943 INFO L130 BoogieDeclarations]: Found specification of procedure zf_get_control [2021-11-23 02:08:26,943 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_get_control [2021-11-23 02:08:26,943 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2021-11-23 02:08:26,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2021-11-23 02:08:26,943 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 02:08:26,943 INFO L130 BoogieDeclarations]: Found specification of procedure request_region [2021-11-23 02:08:26,944 INFO L138 BoogieDeclarations]: Found implementation of procedure request_region [2021-11-23 02:08:26,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:08:26,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 02:08:26,945 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-23 02:08:26,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-23 02:08:26,945 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irqsave [2021-11-23 02:08:26,945 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irqsave [2021-11-23 02:08:26,945 INFO L130 BoogieDeclarations]: Found specification of procedure release_region [2021-11-23 02:08:26,946 INFO L138 BoogieDeclarations]: Found implementation of procedure release_region [2021-11-23 02:08:26,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:08:26,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:08:26,946 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_init [2021-11-23 02:08:26,947 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_init [2021-11-23 02:08:26,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-23 02:08:26,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-23 02:08:26,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-23 02:08:26,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-23 02:08:26,947 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-23 02:08:26,948 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-23 02:08:26,948 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2021-11-23 02:08:26,948 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2021-11-23 02:08:26,949 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 02:08:26,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 02:08:26,950 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2021-11-23 02:08:26,950 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2021-11-23 02:08:26,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-23 02:08:26,952 INFO L130 BoogieDeclarations]: Found specification of procedure cdev_add [2021-11-23 02:08:26,952 INFO L138 BoogieDeclarations]: Found implementation of procedure cdev_add [2021-11-23 02:08:26,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-23 02:08:26,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-23 02:08:26,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-23 02:08:26,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 02:08:26,953 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2021-11-23 02:08:26,953 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2021-11-23 02:08:26,953 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2021-11-23 02:08:26,953 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2021-11-23 02:08:26,954 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2021-11-23 02:08:26,954 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2021-11-23 02:08:26,954 INFO L130 BoogieDeclarations]: Found specification of procedure misc_deregister [2021-11-23 02:08:26,954 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_deregister [2021-11-23 02:08:26,954 INFO L130 BoogieDeclarations]: Found specification of procedure assert_context_process [2021-11-23 02:08:26,954 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_context_process [2021-11-23 02:08:26,954 INFO L130 BoogieDeclarations]: Found specification of procedure zf_set_control [2021-11-23 02:08:26,955 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_set_control [2021-11-23 02:08:26,955 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~C_ULONG~X~$Pointer$~TO~C_LONG [2021-11-23 02:08:26,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~C_ULONG~X~$Pointer$~TO~C_LONG [2021-11-23 02:08:26,956 INFO L130 BoogieDeclarations]: Found specification of procedure zf_readw [2021-11-23 02:08:26,956 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_readw [2021-11-23 02:08:26,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-23 02:08:26,956 INFO L130 BoogieDeclarations]: Found specification of procedure zf_ping [2021-11-23 02:08:26,956 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_ping [2021-11-23 02:08:26,957 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-23 02:08:26,957 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-23 02:08:26,957 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~C_ULONG~TO~VOID [2021-11-23 02:08:26,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~C_ULONG~TO~VOID [2021-11-23 02:08:27,361 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:08:27,363 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:08:33,226 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:08:33,246 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:08:33,247 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-23 02:08:33,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:08:33 BoogieIcfgContainer [2021-11-23 02:08:33,257 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:08:33,259 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:08:33,260 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:08:33,263 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:08:33,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:08:24" (1/3) ... [2021-11-23 02:08:33,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2766d2a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:08:33, skipping insertion in model container [2021-11-23 02:08:33,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:08:26" (2/3) ... [2021-11-23 02:08:33,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2766d2a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:08:33, skipping insertion in model container [2021-11-23 02:08:33,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:08:33" (3/3) ... [2021-11-23 02:08:33,274 INFO L111 eAbstractionObserver]: Analyzing ICFG ddv_machzwd_outl.i [2021-11-23 02:08:33,282 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:08:33,283 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 205 error locations. [2021-11-23 02:08:33,336 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:08:33,346 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 [2021-11-23 02:08:33,346 INFO L340 AbstractCegarLoop]: Starting to check reachability of 205 error locations. [2021-11-23 02:08:33,385 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) [2021-11-23 02:08:33,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-23 02:08:33,392 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:08:33,393 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-23 02:08:33,393 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)] === [2021-11-23 02:08:33,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:08:33,399 INFO L85 PathProgramCache]: Analyzing trace with hash 333908101, now seen corresponding path program 1 times [2021-11-23 02:08:33,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:08:33,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [812483008] [2021-11-23 02:08:33,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:08:33,421 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:08:33,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:08:33,426 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:08:33,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 02:08:33,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:08:33,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 02:08:33,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:08:33,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:08:33,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:08:34,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:08:34,039 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:08:34,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [812483008] [2021-11-23 02:08:34,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [812483008] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:08:34,040 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:08:34,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-11-23 02:08:34,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081230026] [2021-11-23 02:08:34,044 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:08:34,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 02:08:34,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:08:34,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 02:08:34,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:08:34,099 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) [2021-11-23 02:08:36,141 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:08:38,155 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:08:40,164 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:08:44,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:08:44,478 INFO L93 Difference]: Finished difference Result 1203 states and 1442 transitions. [2021-11-23 02:08:44,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 02:08:44,487 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 [2021-11-23 02:08:44,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:08:44,509 INFO L225 Difference]: With dead ends: 1203 [2021-11-23 02:08:44,509 INFO L226 Difference]: Without dead ends: 1199 [2021-11-23 02:08:44,510 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 [2021-11-23 02:08:44,514 INFO L933 BasicCegarLoop]: 758 mSDtfsCounter, 695 mSDsluCounter, 2850 mSDsCounter, 0 mSdLazyCounter, 1677 mSolverCounterSat, 6 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s 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, 10.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:08:44,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [696 Valid, 3608 Invalid, 1686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1677 Invalid, 3 Unknown, 0 Unchecked, 10.2s Time] [2021-11-23 02:08:44,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1199 states. [2021-11-23 02:08:44,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1199 to 986. [2021-11-23 02:08:44,635 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) [2021-11-23 02:08:44,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 986 states to 986 states and 1346 transitions. [2021-11-23 02:08:44,647 INFO L78 Accepts]: Start accepts. Automaton has 986 states and 1346 transitions. Word has length 5 [2021-11-23 02:08:44,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:08:44,647 INFO L470 AbstractCegarLoop]: Abstraction has 986 states and 1346 transitions. [2021-11-23 02:08:44,648 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) [2021-11-23 02:08:44,648 INFO L276 IsEmpty]: Start isEmpty. Operand 986 states and 1346 transitions. [2021-11-23 02:08:44,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-23 02:08:44,648 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:08:44,649 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-23 02:08:44,668 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 02:08:44,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:08:44,863 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)] === [2021-11-23 02:08:44,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:08:44,864 INFO L85 PathProgramCache]: Analyzing trace with hash 333908102, now seen corresponding path program 1 times [2021-11-23 02:08:44,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:08:44,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [477585481] [2021-11-23 02:08:44,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:08:44,865 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:08:44,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:08:44,866 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:08:44,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-23 02:08:45,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:08:45,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 02:08:45,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:08:45,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:08:45,344 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:08:45,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:08:45,596 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:08:45,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [477585481] [2021-11-23 02:08:45,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [477585481] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:08:45,597 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:08:45,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-11-23 02:08:45,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836415377] [2021-11-23 02:08:45,597 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:08:45,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 02:08:45,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:08:45,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 02:08:45,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:08:45,600 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) [2021-11-23 02:08:47,621 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:08:49,631 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:08:51,642 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:08:58,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:08:58,624 INFO L93 Difference]: Finished difference Result 1343 states and 1686 transitions. [2021-11-23 02:08:58,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:08:58,625 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 [2021-11-23 02:08:58,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:08:58,639 INFO L225 Difference]: With dead ends: 1343 [2021-11-23 02:08:58,639 INFO L226 Difference]: Without dead ends: 1343 [2021-11-23 02:08:58,640 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 [2021-11-23 02:08:58,647 INFO L933 BasicCegarLoop]: 860 mSDtfsCounter, 764 mSDsluCounter, 2516 mSDsCounter, 0 mSdLazyCounter, 1462 mSolverCounterSat, 63 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s 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, 12.8s IncrementalHoareTripleChecker+Time [2021-11-23 02:08:58,649 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [767 Valid, 3376 Invalid, 1528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1462 Invalid, 3 Unknown, 0 Unchecked, 12.8s Time] [2021-11-23 02:08:58,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1343 states. [2021-11-23 02:08:58,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1343 to 1209. [2021-11-23 02:08:58,728 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) [2021-11-23 02:08:58,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1209 states to 1209 states and 1668 transitions. [2021-11-23 02:08:58,740 INFO L78 Accepts]: Start accepts. Automaton has 1209 states and 1668 transitions. Word has length 5 [2021-11-23 02:08:58,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:08:58,741 INFO L470 AbstractCegarLoop]: Abstraction has 1209 states and 1668 transitions. [2021-11-23 02:08:58,741 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) [2021-11-23 02:08:58,741 INFO L276 IsEmpty]: Start isEmpty. Operand 1209 states and 1668 transitions. [2021-11-23 02:08:58,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-23 02:08:58,742 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:08:58,742 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:08:58,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-23 02:08:58,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:08:58,960 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)] === [2021-11-23 02:08:58,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:08:58,960 INFO L85 PathProgramCache]: Analyzing trace with hash -863937403, now seen corresponding path program 1 times [2021-11-23 02:08:58,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:08:58,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1375419787] [2021-11-23 02:08:58,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:08:58,962 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:08:58,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:08:58,963 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:08:58,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-23 02:08:59,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:08:59,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:08:59,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:08:59,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:08:59,416 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:08:59,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:08:59,453 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:08:59,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1375419787] [2021-11-23 02:08:59,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1375419787] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:08:59,453 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:08:59,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 2] imperfect sequences [] total 3 [2021-11-23 02:08:59,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12889755] [2021-11-23 02:08:59,454 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:08:59,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:08:59,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:08:59,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:08:59,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:08:59,456 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) [2021-11-23 02:09:02,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:09:02,423 INFO L93 Difference]: Finished difference Result 2047 states and 2548 transitions. [2021-11-23 02:09:02,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:09:02,423 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 [2021-11-23 02:09:02,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:09:02,438 INFO L225 Difference]: With dead ends: 2047 [2021-11-23 02:09:02,438 INFO L226 Difference]: Without dead ends: 2047 [2021-11-23 02:09:02,439 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 [2021-11-23 02:09:02,442 INFO L933 BasicCegarLoop]: 832 mSDtfsCounter, 1286 mSDsluCounter, 1416 mSDsCounter, 0 mSdLazyCounter, 855 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s 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, 2.9s IncrementalHoareTripleChecker+Time [2021-11-23 02:09:02,444 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1286 Valid, 2248 Invalid, 870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 855 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-11-23 02:09:02,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2047 states. [2021-11-23 02:09:02,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2047 to 1617. [2021-11-23 02:09:02,510 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) [2021-11-23 02:09:02,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1617 states to 1617 states and 2348 transitions. [2021-11-23 02:09:02,521 INFO L78 Accepts]: Start accepts. Automaton has 1617 states and 2348 transitions. Word has length 11 [2021-11-23 02:09:02,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:09:02,522 INFO L470 AbstractCegarLoop]: Abstraction has 1617 states and 2348 transitions. [2021-11-23 02:09:02,522 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) [2021-11-23 02:09:02,522 INFO L276 IsEmpty]: Start isEmpty. Operand 1617 states and 2348 transitions. [2021-11-23 02:09:02,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-23 02:09:02,523 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:09:02,523 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:09:02,537 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-23 02:09:02,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:09:02,733 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)] === [2021-11-23 02:09:02,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:09:02,733 INFO L85 PathProgramCache]: Analyzing trace with hash -863937402, now seen corresponding path program 1 times [2021-11-23 02:09:02,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:09:02,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1498768899] [2021-11-23 02:09:02,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:09:02,735 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:09:02,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:09:02,736 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:09:02,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-23 02:09:03,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:09:03,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 02:09:03,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:09:03,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:09:03,202 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:09:03,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:09:03,400 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:09:03,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1498768899] [2021-11-23 02:09:03,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1498768899] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:09:03,400 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:09:03,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [] total 5 [2021-11-23 02:09:03,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113579109] [2021-11-23 02:09:03,401 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:09:03,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 02:09:03,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:09:03,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 02:09:03,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-23 02:09:03,402 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) [2021-11-23 02:09:05,420 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:09:07,433 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:09:14,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:09:14,397 INFO L93 Difference]: Finished difference Result 1889 states and 2538 transitions. [2021-11-23 02:09:14,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 02:09:14,399 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 [2021-11-23 02:09:14,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:09:14,421 INFO L225 Difference]: With dead ends: 1889 [2021-11-23 02:09:14,421 INFO L226 Difference]: Without dead ends: 1889 [2021-11-23 02:09:14,421 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 [2021-11-23 02:09:14,422 INFO L933 BasicCegarLoop]: 852 mSDtfsCounter, 831 mSDsluCounter, 2444 mSDsCounter, 0 mSdLazyCounter, 1424 mSolverCounterSat, 40 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s 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, 10.9s IncrementalHoareTripleChecker+Time [2021-11-23 02:09:14,423 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [831 Valid, 3296 Invalid, 1466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1424 Invalid, 2 Unknown, 0 Unchecked, 10.9s Time] [2021-11-23 02:09:14,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1889 states. [2021-11-23 02:09:14,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1889 to 1623. [2021-11-23 02:09:14,473 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) [2021-11-23 02:09:14,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1623 states to 1623 states and 2355 transitions. [2021-11-23 02:09:14,483 INFO L78 Accepts]: Start accepts. Automaton has 1623 states and 2355 transitions. Word has length 11 [2021-11-23 02:09:14,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:09:14,483 INFO L470 AbstractCegarLoop]: Abstraction has 1623 states and 2355 transitions. [2021-11-23 02:09:14,484 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) [2021-11-23 02:09:14,484 INFO L276 IsEmpty]: Start isEmpty. Operand 1623 states and 2355 transitions. [2021-11-23 02:09:14,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-23 02:09:14,485 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:09:14,485 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:09:14,508 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-23 02:09:14,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:09:14,699 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)] === [2021-11-23 02:09:14,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:09:14,699 INFO L85 PathProgramCache]: Analyzing trace with hash -833526471, now seen corresponding path program 1 times [2021-11-23 02:09:14,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:09:14,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [16867569] [2021-11-23 02:09:14,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:09:14,700 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:09:14,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:09:14,701 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:09:14,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-23 02:09:15,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:09:15,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:09:15,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:09:15,058 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:09:15,059 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:09:15,117 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:09:15,117 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:09:15,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [16867569] [2021-11-23 02:09:15,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [16867569] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:09:15,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [194421249] [2021-11-23 02:09:15,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:09:15,117 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 02:09:15,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/cvc4 [2021-11-23 02:09:15,119 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 02:09:15,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-23 02:09:15,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:09:15,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:09:15,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:09:15,648 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:09:15,648 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:09:15,680 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:09:15,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [194421249] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:09:15,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244799930] [2021-11-23 02:09:15,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:09:15,681 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:09:15,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:09:15,687 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:09:15,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-23 02:09:15,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:09:15,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:09:15,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:09:16,043 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 02:09:16,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:09:16,094 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 02:09:16,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [244799930] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:09:16,095 INFO L186 FreeRefinementEngine]: Found 2 perfect and 4 imperfect interpolant sequences. [2021-11-23 02:09:16,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 2] imperfect sequences [4, 4, 4, 4] total 8 [2021-11-23 02:09:16,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689458088] [2021-11-23 02:09:16,095 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:09:16,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:09:16,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:09:16,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:09:16,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:09:16,097 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) [2021-11-23 02:09:18,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:09:18,427 INFO L93 Difference]: Finished difference Result 2811 states and 3794 transitions. [2021-11-23 02:09:18,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:09:18,427 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 [2021-11-23 02:09:18,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:09:18,442 INFO L225 Difference]: With dead ends: 2811 [2021-11-23 02:09:18,442 INFO L226 Difference]: Without dead ends: 2811 [2021-11-23 02:09:18,442 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:09:18,443 INFO L933 BasicCegarLoop]: 796 mSDtfsCounter, 1773 mSDsluCounter, 869 mSDsCounter, 0 mSdLazyCounter, 646 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s 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, 2.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:09:18,444 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1773 Valid, 1665 Invalid, 793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 646 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-23 02:09:18,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2811 states. [2021-11-23 02:09:18,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2811 to 2399. [2021-11-23 02:09:18,517 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) [2021-11-23 02:09:18,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2399 states to 2399 states and 3594 transitions. [2021-11-23 02:09:18,530 INFO L78 Accepts]: Start accepts. Automaton has 2399 states and 3594 transitions. Word has length 16 [2021-11-23 02:09:18,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:09:18,530 INFO L470 AbstractCegarLoop]: Abstraction has 2399 states and 3594 transitions. [2021-11-23 02:09:18,530 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) [2021-11-23 02:09:18,531 INFO L276 IsEmpty]: Start isEmpty. Operand 2399 states and 3594 transitions. [2021-11-23 02:09:18,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-23 02:09:18,532 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:09:18,532 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:09:18,546 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-23 02:09:18,784 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-23 02:09:18,949 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2021-11-23 02:09:19,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt [2021-11-23 02:09:19,146 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)] === [2021-11-23 02:09:19,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:09:19,146 INFO L85 PathProgramCache]: Analyzing trace with hash -833526470, now seen corresponding path program 1 times [2021-11-23 02:09:19,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:09:19,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [652789593] [2021-11-23 02:09:19,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:09:19,148 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:09:19,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:09:19,149 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:09:19,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-23 02:09:19,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:09:19,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:09:19,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:09:19,447 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:09:19,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:09:19,492 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:09:19,492 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:09:19,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [652789593] [2021-11-23 02:09:19,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [652789593] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:09:19,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1982700315] [2021-11-23 02:09:19,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:09:19,492 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 02:09:19,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/cvc4 [2021-11-23 02:09:19,494 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 02:09:19,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-23 02:09:19,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:09:19,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:09:19,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:09:19,982 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:09:19,983 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:09:20,012 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:09:20,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1982700315] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:09:20,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883800297] [2021-11-23 02:09:20,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:09:20,013 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:09:20,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:09:20,014 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:09:20,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-23 02:09:20,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:09:20,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 02:09:20,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:09:20,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 02:09:20,469 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:09:20,797 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 02:09:20,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [883800297] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:09:20,797 INFO L186 FreeRefinementEngine]: Found 2 perfect and 4 imperfect interpolant sequences. [2021-11-23 02:09:20,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [4, 4, 4, 4] total 10 [2021-11-23 02:09:20,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098876148] [2021-11-23 02:09:20,798 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:09:20,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 02:09:20,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:09:20,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 02:09:20,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-23 02:09:20,799 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) [2021-11-23 02:09:22,818 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:09:24,825 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:09:29,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:09:29,793 INFO L93 Difference]: Finished difference Result 2526 states and 3625 transitions. [2021-11-23 02:09:29,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 02:09:29,794 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 [2021-11-23 02:09:29,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:09:29,808 INFO L225 Difference]: With dead ends: 2526 [2021-11-23 02:09:29,808 INFO L226 Difference]: Without dead ends: 2526 [2021-11-23 02:09:29,809 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 [2021-11-23 02:09:29,809 INFO L933 BasicCegarLoop]: 850 mSDtfsCounter, 557 mSDsluCounter, 1835 mSDsCounter, 0 mSdLazyCounter, 1104 mSolverCounterSat, 8 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s 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, 8.9s IncrementalHoareTripleChecker+Time [2021-11-23 02:09:29,810 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [557 Valid, 2685 Invalid, 1114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1104 Invalid, 2 Unknown, 0 Unchecked, 8.9s Time] [2021-11-23 02:09:29,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2526 states. [2021-11-23 02:09:29,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2526 to 2401. [2021-11-23 02:09:29,896 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) [2021-11-23 02:09:29,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2401 states to 2401 states and 3596 transitions. [2021-11-23 02:09:29,909 INFO L78 Accepts]: Start accepts. Automaton has 2401 states and 3596 transitions. Word has length 16 [2021-11-23 02:09:29,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:09:29,909 INFO L470 AbstractCegarLoop]: Abstraction has 2401 states and 3596 transitions. [2021-11-23 02:09:29,909 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) [2021-11-23 02:09:29,909 INFO L276 IsEmpty]: Start isEmpty. Operand 2401 states and 3596 transitions. [2021-11-23 02:09:29,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-23 02:09:29,910 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:09:29,910 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:09:29,950 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-23 02:09:30,137 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-23 02:09:30,331 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2021-11-23 02:09:30,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt [2021-11-23 02:09:30,528 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)] === [2021-11-23 02:09:30,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:09:30,529 INFO L85 PathProgramCache]: Analyzing trace with hash -67919898, now seen corresponding path program 1 times [2021-11-23 02:09:30,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:09:30,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [463442588] [2021-11-23 02:09:30,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:09:30,530 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:09:30,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:09:30,532 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:09:30,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-23 02:09:30,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:09:30,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 02:09:30,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:09:31,107 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:09:31,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:09:31,707 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:09:31,708 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:09:31,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [463442588] [2021-11-23 02:09:31,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [463442588] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:09:31,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [266159460] [2021-11-23 02:09:31,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:09:31,708 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 02:09:31,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/cvc4 [2021-11-23 02:09:31,714 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 02:09:31,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-23 02:09:32,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:09:32,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 02:09:32,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:09:32,594 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:09:32,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:09:32,837 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:09:32,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [266159460] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:09:32,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149766988] [2021-11-23 02:09:32,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:09:32,837 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:09:32,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:09:32,838 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:09:32,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-23 02:09:33,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:09:33,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 02:09:33,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:09:33,271 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:09:33,271 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:09:33,540 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:09:33,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [149766988] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:09:33,540 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-23 02:09:33,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4, 5, 4, 5] total 9 [2021-11-23 02:09:33,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097717676] [2021-11-23 02:09:33,541 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-23 02:09:33,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 02:09:33,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:09:33,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 02:09:33,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-23 02:09:33,542 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) [2021-11-23 02:09:35,571 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:09:37,577 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:09:39,587 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:09:49,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:09:49,497 INFO L93 Difference]: Finished difference Result 2998 states and 4330 transitions. [2021-11-23 02:09:49,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-23 02:09:49,498 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 [2021-11-23 02:09:49,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:09:49,514 INFO L225 Difference]: With dead ends: 2998 [2021-11-23 02:09:49,514 INFO L226 Difference]: Without dead ends: 2998 [2021-11-23 02:09:49,514 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=73, Invalid=109, Unknown=0, NotChecked=0, Total=182 [2021-11-23 02:09:49,515 INFO L933 BasicCegarLoop]: 827 mSDtfsCounter, 1505 mSDsluCounter, 2439 mSDsCounter, 0 mSdLazyCounter, 1506 mSolverCounterSat, 210 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.4s 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, 15.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:09:49,516 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1517 Valid, 3266 Invalid, 1719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 1506 Invalid, 3 Unknown, 0 Unchecked, 15.3s Time] [2021-11-23 02:09:49,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2998 states. [2021-11-23 02:09:49,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2998 to 2510. [2021-11-23 02:09:49,607 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) [2021-11-23 02:09:49,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2510 states to 2510 states and 3748 transitions. [2021-11-23 02:09:49,643 INFO L78 Accepts]: Start accepts. Automaton has 2510 states and 3748 transitions. Word has length 17 [2021-11-23 02:09:49,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:09:49,644 INFO L470 AbstractCegarLoop]: Abstraction has 2510 states and 3748 transitions. [2021-11-23 02:09:49,644 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) [2021-11-23 02:09:49,644 INFO L276 IsEmpty]: Start isEmpty. Operand 2510 states and 3748 transitions. [2021-11-23 02:09:49,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-23 02:09:49,646 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:09:49,646 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:09:49,662 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-23 02:09:49,864 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (13)] Ended with exit code 0 [2021-11-23 02:09:50,084 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-11-23 02:09:50,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:09:50,261 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)] === [2021-11-23 02:09:50,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:09:50,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1241117018, now seen corresponding path program 2 times [2021-11-23 02:09:50,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:09:50,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1742137275] [2021-11-23 02:09:50,262 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 02:09:50,263 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:09:50,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:09:50,264 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:09:50,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-23 02:09:50,605 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 02:09:50,605 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 02:09:50,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-23 02:09:50,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:09:51,225 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:09:51,226 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:09:52,957 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:09:52,957 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:09:52,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1742137275] [2021-11-23 02:09:52,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1742137275] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:09:52,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1491555871] [2021-11-23 02:09:52,958 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 02:09:52,958 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 02:09:52,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/cvc4 [2021-11-23 02:09:52,959 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 02:09:52,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2021-11-23 02:09:53,988 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 02:09:53,988 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 02:09:54,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 02:09:54,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:09:54,396 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:09:54,396 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:09:56,547 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:09:56,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1491555871] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:09:56,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560775349] [2021-11-23 02:09:56,548 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 02:09:56,548 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:09:56,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:09:56,555 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:09:56,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-23 02:10:14,430 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 02:10:14,430 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 02:10:14,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-23 02:10:14,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:10:14,762 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:10:14,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:10:17,172 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:10:17,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560775349] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:10:17,172 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-23 02:10:17,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 8, 9, 8, 10] total 30 [2021-11-23 02:10:17,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103697072] [2021-11-23 02:10:17,173 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-23 02:10:17,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-23 02:10:17,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:10:17,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-23 02:10:17,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=713, Unknown=0, NotChecked=0, Total=930 [2021-11-23 02:10:17,175 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) [2021-11-23 02:10:19,193 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:10:21,203 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:10:23,212 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:11:32,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:11:32,696 INFO L93 Difference]: Finished difference Result 3501 states and 4875 transitions. [2021-11-23 02:11:32,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-23 02:11:32,698 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 [2021-11-23 02:11:32,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:11:32,716 INFO L225 Difference]: With dead ends: 3501 [2021-11-23 02:11:32,716 INFO L226 Difference]: Without dead ends: 3501 [2021-11-23 02:11:32,717 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 559 ImplicationChecksByTransitivity, 14.8s TimeCoverageRelationStatistics Valid=611, Invalid=1839, Unknown=0, NotChecked=0, Total=2450 [2021-11-23 02:11:32,718 INFO L933 BasicCegarLoop]: 736 mSDtfsCounter, 4225 mSDsluCounter, 12990 mSDsCounter, 0 mSdLazyCounter, 11048 mSolverCounterSat, 602 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 59.6s 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, 65.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:11:32,719 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4237 Valid, 13726 Invalid, 11653 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [602 Valid, 11048 Invalid, 3 Unknown, 0 Unchecked, 65.0s Time] [2021-11-23 02:11:32,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3501 states. [2021-11-23 02:11:32,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3501 to 2572. [2021-11-23 02:11:32,797 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) [2021-11-23 02:11:32,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2572 states to 2572 states and 3851 transitions. [2021-11-23 02:11:32,806 INFO L78 Accepts]: Start accepts. Automaton has 2572 states and 3851 transitions. Word has length 29 [2021-11-23 02:11:32,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:11:32,807 INFO L470 AbstractCegarLoop]: Abstraction has 2572 states and 3851 transitions. [2021-11-23 02:11:32,807 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) [2021-11-23 02:11:32,807 INFO L276 IsEmpty]: Start isEmpty. Operand 2572 states and 3851 transitions. [2021-11-23 02:11:32,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-23 02:11:32,809 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:11:32,809 INFO L514 BasicCegarLoop]: trace histogram [15, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:11:32,853 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-23 02:11:33,020 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-11-23 02:11:33,214 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2021-11-23 02:11:33,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt [2021-11-23 02:11:33,410 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)] === [2021-11-23 02:11:33,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:11:33,411 INFO L85 PathProgramCache]: Analyzing trace with hash 495619110, now seen corresponding path program 3 times [2021-11-23 02:11:33,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:11:33,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [131314376] [2021-11-23 02:11:33,411 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 02:11:33,411 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:11:33,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:11:33,412 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:11:33,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-23 02:11:34,586 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2021-11-23 02:11:34,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 02:11:34,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-23 02:11:34,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:11:34,888 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 134 proven. 145 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-23 02:11:34,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:11:35,493 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 134 proven. 145 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-23 02:11:35,494 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:11:35,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [131314376] [2021-11-23 02:11:35,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [131314376] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:11:35,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1020759143] [2021-11-23 02:11:35,495 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 02:11:35,495 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 02:11:35,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/cvc4 [2021-11-23 02:11:35,501 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 02:11:35,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-11-23 02:11:38,403 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2021-11-23 02:11:38,403 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 02:11:38,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-23 02:11:38,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:11:39,755 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 105 proven. 187 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-23 02:11:39,755 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:12:01,771 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:12:01,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1020759143] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:12:01,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636208739] [2021-11-23 02:12:01,772 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 02:12:01,772 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:12:01,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:12:01,773 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:12:01,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7db8648e-b900-4ed4-b6dd-9180bec0e1c1/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-23 02:16:54,513 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2021-11-23 02:16:54,513 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 02:16:54,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-23 02:16:54,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:16:55,241 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 76 proven. 222 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-23 02:16:55,241 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:17:11,865 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:17:11,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636208739] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:17:11,866 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-23 02:17:11,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 14, 26, 15, 18] total 79 [2021-11-23 02:17:11,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486709684] [2021-11-23 02:17:11,866 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-23 02:17:11,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2021-11-23 02:17:11,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:17:11,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2021-11-23 02:17:11,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1069, Invalid=5093, Unknown=0, NotChecked=0, Total=6162 [2021-11-23 02:17:11,871 INFO L87 Difference]: Start difference. First operand 2572 states and 3851 transitions. Second operand has 79 states, 79 states have (on average 2.670886075949367) internal successors, (211), 79 states have internal predecessors, (211), 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) [2021-11-23 02:17:13,896 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:17:15,905 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:17:17,916 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:17:19,926 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:17:21,934 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:17:23,947 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:17:25,955 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:17:27,963 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:17:29,973 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:17:31,982 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:17:33,993 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:17:36,005 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:17:38,016 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:17:40,025 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:17:42,035 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:17:44,043 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:17:46,056 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:17:48,068 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:17:50,080 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:17:52,091 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:17:54,101 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:17:56,112 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:17:58,121 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:18:00,131 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:18:41,438 WARN L227 SmtUtils]: Spent 9.76s on a formula simplification. DAG size of input: 93 DAG size of output: 64 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:19:02,819 WARN L227 SmtUtils]: Spent 7.16s on a formula simplification. DAG size of input: 97 DAG size of output: 60 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:21:47,287 WARN L227 SmtUtils]: Spent 7.36s on a formula simplification. DAG size of input: 79 DAG size of output: 60 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:21:58,796 WARN L227 SmtUtils]: Spent 7.17s on a formula simplification. DAG size of input: 81 DAG size of output: 62 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:22:13,436 WARN L227 SmtUtils]: Spent 8.84s on a formula simplification. DAG size of input: 82 DAG size of output: 60 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)