./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outb_p.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_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/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_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outb_p.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/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_cf936166-faa9-405f-98f5-1c60cadef568/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 5d4ac8f9993fdd9a611524b9b9f0ae991f3672b4fa16738dbd64025282f00ca6 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:29:02,682 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:29:02,684 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:29:02,721 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:29:02,722 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:29:02,723 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:29:02,725 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:29:02,728 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:29:02,730 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:29:02,732 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:29:02,733 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:29:02,735 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:29:02,736 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:29:02,737 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:29:02,739 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:29:02,741 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:29:02,742 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:29:02,743 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:29:02,746 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:29:02,749 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:29:02,751 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:29:02,753 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:29:02,754 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:29:02,756 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:29:02,759 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:29:02,760 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:29:02,761 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:29:02,762 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:29:02,762 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:29:02,764 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:29:02,764 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:29:02,765 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:29:02,766 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:29:02,768 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:29:02,769 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:29:02,770 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:29:02,771 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:29:02,771 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:29:02,771 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:29:02,773 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:29:02,774 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:29:02,775 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-23 02:29:02,804 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:29:02,805 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:29:02,805 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:29:02,806 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:29:02,806 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:29:02,807 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:29:02,807 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:29:02,807 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:29:02,807 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:29:02,808 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:29:02,808 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:29:02,808 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:29:02,808 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:29:02,808 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:29:02,809 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:29:02,809 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:29:02,809 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:29:02,809 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:29:02,810 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 02:29:02,810 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 02:29:02,811 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:29:02,811 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 02:29:02,811 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 02:29:02,811 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:29:02,812 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 02:29:02,812 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:29:02,812 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-23 02:29:02,812 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-23 02:29:02,813 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-23 02:29:02,813 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:29:02,813 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 02:29:02,813 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 02:29:02,814 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:29:02,814 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:29:02,814 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:29:02,814 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:29:02,815 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:29:02,815 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:29:02,815 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:29:02,815 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:29:02,816 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:29:02,816 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:29:02,816 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_cf936166-faa9-405f-98f5-1c60cadef568/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5d4ac8f9993fdd9a611524b9b9f0ae991f3672b4fa16738dbd64025282f00ca6 [2021-11-23 02:29:03,098 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:29:03,125 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:29:03,128 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:29:03,129 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:29:03,130 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:29:03,131 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outb_p.i [2021-11-23 02:29:03,220 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/data/aecfef570/0ffb5e61d6724c2f89e42b64c68120ee/FLAG1253e80ab [2021-11-23 02:29:04,119 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:29:04,120 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outb_p.i [2021-11-23 02:29:04,169 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/data/aecfef570/0ffb5e61d6724c2f89e42b64c68120ee/FLAG1253e80ab [2021-11-23 02:29:04,574 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/data/aecfef570/0ffb5e61d6724c2f89e42b64c68120ee [2021-11-23 02:29:04,576 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:29:04,578 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:29:04,580 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:29:04,580 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:29:04,585 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:29:04,586 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:29:04" (1/1) ... [2021-11-23 02:29:04,587 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55c6a378 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:04, skipping insertion in model container [2021-11-23 02:29:04,587 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:29:04" (1/1) ... [2021-11-23 02:29:04,595 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:29:04,666 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:29:04,913 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_cf936166-faa9-405f-98f5-1c60cadef568/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outb_p.i[458,471] [2021-11-23 02:29:06,282 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:29:06,317 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 02:29:06,318 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@609b065d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:06, skipping insertion in model container [2021-11-23 02:29:06,318 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:29:06,318 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-23 02:29:06,321 INFO L158 Benchmark]: Toolchain (without parser) took 1741.42ms. Allocated memory is still 100.7MB. Free memory was 59.9MB in the beginning and 45.1MB in the end (delta: 14.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-23 02:29:06,322 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 100.7MB. Free memory was 75.6MB in the beginning and 75.6MB in the end (delta: 25.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:29:06,323 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1738.31ms. Allocated memory is still 100.7MB. Free memory was 59.6MB in the beginning and 45.1MB in the end (delta: 14.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-23 02:29:06,325 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 100.7MB. Free memory was 75.6MB in the beginning and 75.6MB in the end (delta: 25.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1738.31ms. Allocated memory is still 100.7MB. Free memory was 59.6MB in the beginning and 45.1MB in the end (delta: 14.5MB). Peak memory consumption was 14.7MB. 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_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/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_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outb_p.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/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_cf936166-faa9-405f-98f5-1c60cadef568/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 5d4ac8f9993fdd9a611524b9b9f0ae991f3672b4fa16738dbd64025282f00ca6 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:29:08,983 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:29:08,987 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:29:09,043 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:29:09,044 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:29:09,046 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:29:09,048 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:29:09,051 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:29:09,054 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:29:09,055 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:29:09,057 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:29:09,059 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:29:09,059 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:29:09,061 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:29:09,063 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:29:09,065 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:29:09,066 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:29:09,070 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:29:09,073 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:29:09,082 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:29:09,084 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:29:09,092 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:29:09,094 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:29:09,095 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:29:09,100 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:29:09,100 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:29:09,101 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:29:09,102 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:29:09,103 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:29:09,104 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:29:09,105 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:29:09,106 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:29:09,107 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:29:09,108 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:29:09,109 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:29:09,109 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:29:09,110 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:29:09,111 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:29:09,111 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:29:09,112 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:29:09,113 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:29:09,115 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-23 02:29:09,162 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:29:09,163 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:29:09,163 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:29:09,163 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:29:09,164 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:29:09,165 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:29:09,165 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:29:09,165 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:29:09,165 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:29:09,165 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:29:09,166 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:29:09,167 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:29:09,168 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 02:29:09,168 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 02:29:09,168 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:29:09,169 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 02:29:09,169 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 02:29:09,169 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:29:09,169 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 02:29:09,169 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:29:09,169 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-23 02:29:09,170 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-23 02:29:09,170 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-23 02:29:09,170 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:29:09,170 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 02:29:09,170 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 02:29:09,171 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 02:29:09,171 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 02:29:09,171 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:29:09,171 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:29:09,171 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 02:29:09,172 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:29:09,172 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:29:09,172 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:29:09,173 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:29:09,173 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 02:29:09,173 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 02:29:09,173 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:29:09,173 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:29:09,173 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_cf936166-faa9-405f-98f5-1c60cadef568/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5d4ac8f9993fdd9a611524b9b9f0ae991f3672b4fa16738dbd64025282f00ca6 [2021-11-23 02:29:09,666 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:29:09,696 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:29:09,701 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:29:09,703 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:29:09,704 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:29:09,706 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outb_p.i [2021-11-23 02:29:09,798 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/data/2b11ff598/c051678699ef458eb3911dc6cefe2eb9/FLAGfa1e29b38 [2021-11-23 02:29:10,722 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:29:10,722 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outb_p.i [2021-11-23 02:29:10,755 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/data/2b11ff598/c051678699ef458eb3911dc6cefe2eb9/FLAGfa1e29b38 [2021-11-23 02:29:10,801 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/data/2b11ff598/c051678699ef458eb3911dc6cefe2eb9 [2021-11-23 02:29:10,806 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:29:10,809 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:29:10,812 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:29:10,813 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:29:10,817 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:29:10,818 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:29:10" (1/1) ... [2021-11-23 02:29:10,819 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32a0c416 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:10, skipping insertion in model container [2021-11-23 02:29:10,820 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:29:10" (1/1) ... [2021-11-23 02:29:10,829 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:29:10,927 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:29:11,184 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_cf936166-faa9-405f-98f5-1c60cadef568/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outb_p.i[458,471] [2021-11-23 02:29:12,754 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:29:12,792 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-23 02:29:12,823 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:29:12,825 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_cf936166-faa9-405f-98f5-1c60cadef568/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outb_p.i[458,471] [2021-11-23 02:29:13,108 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:29:13,166 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:29:13,180 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_cf936166-faa9-405f-98f5-1c60cadef568/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outb_p.i[458,471] [2021-11-23 02:29:13,405 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:29:13,602 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:29:13,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:13 WrapperNode [2021-11-23 02:29:13,603 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:29:13,605 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:29:13,606 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:29:13,606 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:29:13,615 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:13" (1/1) ... [2021-11-23 02:29:13,736 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:13" (1/1) ... [2021-11-23 02:29:13,859 INFO L137 Inliner]: procedures = 482, calls = 839, calls flagged for inlining = 54, calls inlined = 37, statements flattened = 970 [2021-11-23 02:29:13,860 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:29:13,861 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:29:13,862 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:29:13,862 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:29:13,873 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:13" (1/1) ... [2021-11-23 02:29:13,874 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:13" (1/1) ... [2021-11-23 02:29:13,895 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:13" (1/1) ... [2021-11-23 02:29:13,895 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:13" (1/1) ... [2021-11-23 02:29:13,986 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:13" (1/1) ... [2021-11-23 02:29:14,009 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:13" (1/1) ... [2021-11-23 02:29:14,041 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:13" (1/1) ... [2021-11-23 02:29:14,102 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:29:14,103 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:29:14,103 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:29:14,103 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:29:14,104 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:13" (1/1) ... [2021-11-23 02:29:14,115 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:29:14,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:29:14,142 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:29:14,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:29:14,210 INFO L130 BoogieDeclarations]: Found specification of procedure zf_timer_off [2021-11-23 02:29:14,210 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_timer_off [2021-11-23 02:29:14,210 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~C_UINT~X~C_ULONG~TO~C_INT [2021-11-23 02:29:14,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~C_UINT~X~C_ULONG~TO~C_INT [2021-11-23 02:29:14,211 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-23 02:29:14,211 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_atomic_begin [2021-11-23 02:29:14,211 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-23 02:29:14,211 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-23 02:29:14,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 02:29:14,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-11-23 02:29:14,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 02:29:14,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-23 02:29:14,212 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-23 02:29:14,213 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-23 02:29:14,213 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-23 02:29:14,213 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_atomic_end [2021-11-23 02:29:14,213 INFO L130 BoogieDeclarations]: Found specification of procedure zf_get_control [2021-11-23 02:29:14,213 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_get_control [2021-11-23 02:29:14,214 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2021-11-23 02:29:14,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2021-11-23 02:29:14,214 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 02:29:14,214 INFO L130 BoogieDeclarations]: Found specification of procedure request_region [2021-11-23 02:29:14,214 INFO L138 BoogieDeclarations]: Found implementation of procedure request_region [2021-11-23 02:29:14,215 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:29:14,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 02:29:14,215 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-23 02:29:14,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-23 02:29:14,216 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irqsave [2021-11-23 02:29:14,216 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irqsave [2021-11-23 02:29:14,216 INFO L130 BoogieDeclarations]: Found specification of procedure release_region [2021-11-23 02:29:14,217 INFO L138 BoogieDeclarations]: Found implementation of procedure release_region [2021-11-23 02:29:14,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:29:14,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:29:14,218 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_init [2021-11-23 02:29:14,218 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_init [2021-11-23 02:29:14,218 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-23 02:29:14,218 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-23 02:29:14,218 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-23 02:29:14,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-23 02:29:14,219 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-23 02:29:14,219 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-23 02:29:14,219 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2021-11-23 02:29:14,220 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2021-11-23 02:29:14,220 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 02:29:14,221 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 02:29:14,222 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2021-11-23 02:29:14,222 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2021-11-23 02:29:14,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-23 02:29:14,223 INFO L130 BoogieDeclarations]: Found specification of procedure cdev_add [2021-11-23 02:29:14,224 INFO L138 BoogieDeclarations]: Found implementation of procedure cdev_add [2021-11-23 02:29:14,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-23 02:29:14,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-23 02:29:14,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-23 02:29:14,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 02:29:14,224 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2021-11-23 02:29:14,225 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2021-11-23 02:29:14,225 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2021-11-23 02:29:14,225 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2021-11-23 02:29:14,225 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2021-11-23 02:29:14,225 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2021-11-23 02:29:14,226 INFO L130 BoogieDeclarations]: Found specification of procedure misc_deregister [2021-11-23 02:29:14,226 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_deregister [2021-11-23 02:29:14,226 INFO L130 BoogieDeclarations]: Found specification of procedure assert_context_process [2021-11-23 02:29:14,226 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_context_process [2021-11-23 02:29:14,226 INFO L130 BoogieDeclarations]: Found specification of procedure zf_set_control [2021-11-23 02:29:14,227 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_set_control [2021-11-23 02:29:14,227 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~C_ULONG~X~$Pointer$~TO~C_LONG [2021-11-23 02:29:14,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~C_ULONG~X~$Pointer$~TO~C_LONG [2021-11-23 02:29:14,228 INFO L130 BoogieDeclarations]: Found specification of procedure zf_readw [2021-11-23 02:29:14,229 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_readw [2021-11-23 02:29:14,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-23 02:29:14,229 INFO L130 BoogieDeclarations]: Found specification of procedure zf_ping [2021-11-23 02:29:14,229 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_ping [2021-11-23 02:29:14,229 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-23 02:29:14,230 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-23 02:29:14,230 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~C_ULONG~TO~VOID [2021-11-23 02:29:14,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~C_ULONG~TO~VOID [2021-11-23 02:29:14,796 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:29:14,799 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:29:21,284 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:29:21,298 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:29:21,299 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-23 02:29:21,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:29:21 BoogieIcfgContainer [2021-11-23 02:29:21,303 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:29:21,305 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:29:21,305 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:29:21,308 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:29:21,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:29:10" (1/3) ... [2021-11-23 02:29:21,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66b52446 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:29:21, skipping insertion in model container [2021-11-23 02:29:21,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:13" (2/3) ... [2021-11-23 02:29:21,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66b52446 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:29:21, skipping insertion in model container [2021-11-23 02:29:21,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:29:21" (3/3) ... [2021-11-23 02:29:21,312 INFO L111 eAbstractionObserver]: Analyzing ICFG ddv_machzwd_outb_p.i [2021-11-23 02:29:21,318 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:29:21,318 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 205 error locations. [2021-11-23 02:29:21,367 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:29:21,374 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 02:29:21,374 INFO L340 AbstractCegarLoop]: Starting to check reachability of 205 error locations. [2021-11-23 02:29:21,403 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 02:29:21,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-23 02:29:21,410 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:29:21,411 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-23 02:29:21,411 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 02:29:21,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:29:21,417 INFO L85 PathProgramCache]: Analyzing trace with hash 333908101, now seen corresponding path program 1 times [2021-11-23 02:29:21,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:29:21,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1996948911] [2021-11-23 02:29:21,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:29:21,432 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:29:21,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:29:21,436 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:29:21,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 02:29:21,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:29:21,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 02:29:21,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:29:22,152 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 02:29:22,153 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:29:22,218 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 02:29:22,219 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:29:22,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1996948911] [2021-11-23 02:29:22,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1996948911] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:29:22,220 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:29:22,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-11-23 02:29:22,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658731694] [2021-11-23 02:29:22,223 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:29:22,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 02:29:22,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:29:22,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 02:29:22,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:29:22,264 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 02:29:24,315 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:29:26,328 WARN L534 Checker$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 02:29:28,338 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 02:29:33,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:29:33,291 INFO L93 Difference]: Finished difference Result 1203 states and 1442 transitions. [2021-11-23 02:29:33,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 02:29:33,294 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 02:29:33,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:29:33,316 INFO L225 Difference]: With dead ends: 1203 [2021-11-23 02:29:33,317 INFO L226 Difference]: Without dead ends: 1199 [2021-11-23 02:29:33,318 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 02:29:33,321 INFO L933 BasicCegarLoop]: 758 mSDtfsCounter, 695 mSDsluCounter, 2850 mSDsCounter, 0 mSdLazyCounter, 1677 mSolverCounterSat, 6 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 696 SdHoareTripleChecker+Valid, 3608 SdHoareTripleChecker+Invalid, 1686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1677 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2021-11-23 02:29:33,322 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [696 Valid, 3608 Invalid, 1686 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6 Valid, 1677 Invalid, 3 Unknown, 0 Unchecked, 10.7s Time] [2021-11-23 02:29:33,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1199 states. [2021-11-23 02:29:33,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1199 to 986. [2021-11-23 02:29:33,426 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 02:29:33,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 986 states to 986 states and 1346 transitions. [2021-11-23 02:29:33,437 INFO L78 Accepts]: Start accepts. Automaton has 986 states and 1346 transitions. Word has length 5 [2021-11-23 02:29:33,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:29:33,438 INFO L470 AbstractCegarLoop]: Abstraction has 986 states and 1346 transitions. [2021-11-23 02:29:33,438 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 02:29:33,438 INFO L276 IsEmpty]: Start isEmpty. Operand 986 states and 1346 transitions. [2021-11-23 02:29:33,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-23 02:29:33,439 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:29:33,439 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-23 02:29:33,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 02:29:33,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:29:33,662 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 02:29:33,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:29:33,663 INFO L85 PathProgramCache]: Analyzing trace with hash 333908102, now seen corresponding path program 1 times [2021-11-23 02:29:33,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:29:33,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [348598015] [2021-11-23 02:29:33,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:29:33,665 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:29:33,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:29:33,666 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:29:33,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-23 02:29:33,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:29:34,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 02:29:34,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:29:34,143 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 02:29:34,143 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:29:34,351 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 02:29:34,351 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:29:34,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [348598015] [2021-11-23 02:29:34,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [348598015] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:29:34,352 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:29:34,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-11-23 02:29:34,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885805002] [2021-11-23 02:29:34,352 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:29:34,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 02:29:34,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:29:34,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 02:29:34,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:29:34,355 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 02:29:36,383 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 02:29:38,393 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:29:40,401 WARN L534 Checker$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 02:29:48,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:29:48,140 INFO L93 Difference]: Finished difference Result 1343 states and 1686 transitions. [2021-11-23 02:29:48,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:29:48,141 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 02:29:48,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:29:48,156 INFO L225 Difference]: With dead ends: 1343 [2021-11-23 02:29:48,157 INFO L226 Difference]: Without dead ends: 1343 [2021-11-23 02:29:48,157 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 02:29:48,159 INFO L933 BasicCegarLoop]: 860 mSDtfsCounter, 764 mSDsluCounter, 2516 mSDsCounter, 0 mSdLazyCounter, 1462 mSolverCounterSat, 63 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.7s 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, 13.5s IncrementalHoareTripleChecker+Time [2021-11-23 02:29:48,160 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [767 Valid, 3376 Invalid, 1528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1462 Invalid, 3 Unknown, 0 Unchecked, 13.5s Time] [2021-11-23 02:29:48,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1343 states. [2021-11-23 02:29:48,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1343 to 1209. [2021-11-23 02:29:48,229 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 02:29:48,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1209 states to 1209 states and 1668 transitions. [2021-11-23 02:29:48,243 INFO L78 Accepts]: Start accepts. Automaton has 1209 states and 1668 transitions. Word has length 5 [2021-11-23 02:29:48,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:29:48,244 INFO L470 AbstractCegarLoop]: Abstraction has 1209 states and 1668 transitions. [2021-11-23 02:29:48,244 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 02:29:48,244 INFO L276 IsEmpty]: Start isEmpty. Operand 1209 states and 1668 transitions. [2021-11-23 02:29:48,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-23 02:29:48,245 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:29:48,246 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:29:48,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-23 02:29:48,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:29:48,466 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 02:29:48,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:29:48,467 INFO L85 PathProgramCache]: Analyzing trace with hash -863937403, now seen corresponding path program 1 times [2021-11-23 02:29:48,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:29:48,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [553147985] [2021-11-23 02:29:48,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:29:48,469 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:29:48,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:29:48,470 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:29:48,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-23 02:29:48,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:29:48,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:29:48,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:29:48,936 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 02:29:48,936 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:29:48,987 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 02:29:48,987 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:29:48,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [553147985] [2021-11-23 02:29:48,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [553147985] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:29:48,988 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:29:48,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 2] imperfect sequences [] total 3 [2021-11-23 02:29:48,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414523212] [2021-11-23 02:29:48,989 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:29:48,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:29:48,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:29:48,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:29:48,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 02:29:48,991 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 02:29:52,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:29:52,847 INFO L93 Difference]: Finished difference Result 2047 states and 2548 transitions. [2021-11-23 02:29:52,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:29:52,849 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 02:29:52,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:29:52,868 INFO L225 Difference]: With dead ends: 2047 [2021-11-23 02:29:52,869 INFO L226 Difference]: Without dead ends: 2047 [2021-11-23 02:29:52,869 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 02:29:52,871 INFO L933 BasicCegarLoop]: 832 mSDtfsCounter, 1286 mSDsluCounter, 1416 mSDsCounter, 0 mSdLazyCounter, 855 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1286 SdHoareTripleChecker+Valid, 2248 SdHoareTripleChecker+Invalid, 870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-11-23 02:29:52,872 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1286 Valid, 2248 Invalid, 870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 855 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2021-11-23 02:29:52,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2047 states. [2021-11-23 02:29:52,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2047 to 1617. [2021-11-23 02:29:52,939 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 02:29:52,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1617 states to 1617 states and 2348 transitions. [2021-11-23 02:29:52,991 INFO L78 Accepts]: Start accepts. Automaton has 1617 states and 2348 transitions. Word has length 11 [2021-11-23 02:29:52,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:29:52,991 INFO L470 AbstractCegarLoop]: Abstraction has 1617 states and 2348 transitions. [2021-11-23 02:29:52,992 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 02:29:52,992 INFO L276 IsEmpty]: Start isEmpty. Operand 1617 states and 2348 transitions. [2021-11-23 02:29:52,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-23 02:29:52,992 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:29:52,993 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:29:53,012 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-23 02:29:53,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:29:53,206 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 02:29:53,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:29:53,207 INFO L85 PathProgramCache]: Analyzing trace with hash -863937402, now seen corresponding path program 1 times [2021-11-23 02:29:53,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:29:53,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [725477571] [2021-11-23 02:29:53,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:29:53,208 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:29:53,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:29:53,212 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:29:53,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-23 02:29:53,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:29:53,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 02:29:53,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:29:53,747 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 02:29:53,747 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:29:54,009 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 02:29:54,009 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:29:54,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [725477571] [2021-11-23 02:29:54,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [725477571] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:29:54,010 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:29:54,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [] total 5 [2021-11-23 02:29:54,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651109569] [2021-11-23 02:29:54,010 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:29:54,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 02:29:54,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:29:54,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 02:29:54,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-23 02:29:54,012 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 02:29:56,048 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:29:58,059 WARN L534 Checker$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 02:30:05,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:30:05,789 INFO L93 Difference]: Finished difference Result 1889 states and 2538 transitions. [2021-11-23 02:30:05,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 02:30:05,791 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 02:30:05,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:30:05,804 INFO L225 Difference]: With dead ends: 1889 [2021-11-23 02:30:05,805 INFO L226 Difference]: Without dead ends: 1889 [2021-11-23 02:30:05,805 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 02:30:05,807 INFO L933 BasicCegarLoop]: 852 mSDtfsCounter, 831 mSDsluCounter, 2444 mSDsCounter, 0 mSdLazyCounter, 1424 mSolverCounterSat, 40 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s 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, 11.6s IncrementalHoareTripleChecker+Time [2021-11-23 02:30:05,807 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [831 Valid, 3296 Invalid, 1466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1424 Invalid, 2 Unknown, 0 Unchecked, 11.6s Time] [2021-11-23 02:30:05,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1889 states. [2021-11-23 02:30:05,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1889 to 1623. [2021-11-23 02:30:05,854 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 02:30:05,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1623 states to 1623 states and 2355 transitions. [2021-11-23 02:30:05,863 INFO L78 Accepts]: Start accepts. Automaton has 1623 states and 2355 transitions. Word has length 11 [2021-11-23 02:30:05,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:30:05,863 INFO L470 AbstractCegarLoop]: Abstraction has 1623 states and 2355 transitions. [2021-11-23 02:30:05,864 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 02:30:05,864 INFO L276 IsEmpty]: Start isEmpty. Operand 1623 states and 2355 transitions. [2021-11-23 02:30:05,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-23 02:30:05,865 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:30:05,865 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:30:05,885 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-23 02:30:06,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:30:06,079 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 02:30:06,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:30:06,080 INFO L85 PathProgramCache]: Analyzing trace with hash -833526471, now seen corresponding path program 1 times [2021-11-23 02:30:06,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:30:06,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [883816124] [2021-11-23 02:30:06,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:30:06,081 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:30:06,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:30:06,082 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:30:06,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-23 02:30:06,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:30:06,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:30:06,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:30:06,498 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 02:30:06,498 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:30:06,560 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 02:30:06,560 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:30:06,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [883816124] [2021-11-23 02:30:06,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [883816124] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:30:06,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [114221418] [2021-11-23 02:30:06,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:30:06,561 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 02:30:06,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/cvc4 [2021-11-23 02:30:06,566 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 02:30:06,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-23 02:30:07,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:30:07,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:30:07,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:30:07,058 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 02:30:07,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:30:07,089 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 02:30:07,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [114221418] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:30:07,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238607345] [2021-11-23 02:30:07,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:30:07,090 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:30:07,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:30:07,091 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:30:07,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-23 02:30:07,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:30:07,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:30:07,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:30:07,425 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 02:30:07,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:30:07,483 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 02:30:07,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238607345] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:30:07,483 INFO L186 FreeRefinementEngine]: Found 2 perfect and 4 imperfect interpolant sequences. [2021-11-23 02:30:07,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 2] imperfect sequences [4, 4, 4, 4] total 8 [2021-11-23 02:30:07,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668130545] [2021-11-23 02:30:07,484 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:30:07,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 02:30:07,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:30:07,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 02:30:07,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:30:07,486 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 02:30:09,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:30:09,810 INFO L93 Difference]: Finished difference Result 2811 states and 3794 transitions. [2021-11-23 02:30:09,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 02:30:09,811 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 02:30:09,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:30:09,828 INFO L225 Difference]: With dead ends: 2811 [2021-11-23 02:30:09,828 INFO L226 Difference]: Without dead ends: 2811 [2021-11-23 02:30:09,828 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 02:30:09,829 INFO L933 BasicCegarLoop]: 796 mSDtfsCounter, 1773 mSDsluCounter, 869 mSDsCounter, 0 mSdLazyCounter, 646 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s 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 02:30:09,830 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 02:30:09,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2811 states. [2021-11-23 02:30:09,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2811 to 2399. [2021-11-23 02:30:09,920 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 02:30:09,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2399 states to 2399 states and 3594 transitions. [2021-11-23 02:30:09,933 INFO L78 Accepts]: Start accepts. Automaton has 2399 states and 3594 transitions. Word has length 16 [2021-11-23 02:30:09,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:30:09,933 INFO L470 AbstractCegarLoop]: Abstraction has 2399 states and 3594 transitions. [2021-11-23 02:30:09,934 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 02:30:09,934 INFO L276 IsEmpty]: Start isEmpty. Operand 2399 states and 3594 transitions. [2021-11-23 02:30:09,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-23 02:30:09,934 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:30:09,935 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:30:09,967 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-23 02:30:10,157 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2021-11-23 02:30:10,363 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-23 02:30:10,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 02:30:10,555 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 02:30:10,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:30:10,556 INFO L85 PathProgramCache]: Analyzing trace with hash -833526470, now seen corresponding path program 1 times [2021-11-23 02:30:10,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:30:10,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [713009822] [2021-11-23 02:30:10,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:30:10,556 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:30:10,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:30:10,558 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:30:10,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-23 02:30:10,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:30:10,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:30:10,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:30:10,975 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 02:30:10,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:30:11,053 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 02:30:11,054 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:30:11,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [713009822] [2021-11-23 02:30:11,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [713009822] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:30:11,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2145810786] [2021-11-23 02:30:11,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:30:11,055 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 02:30:11,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/cvc4 [2021-11-23 02:30:11,059 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 02:30:11,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2021-11-23 02:30:11,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:30:11,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 02:30:11,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:30:11,666 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 02:30:11,666 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:30:11,708 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 02:30:11,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2145810786] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:30:11,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808152667] [2021-11-23 02:30:11,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:30:11,709 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:30:11,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:30:11,710 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:30:11,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-23 02:30:11,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:30:11,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 02:30:11,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:30:12,221 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 02:30:12,221 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:30:12,618 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 02:30:12,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [808152667] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 02:30:12,619 INFO L186 FreeRefinementEngine]: Found 2 perfect and 4 imperfect interpolant sequences. [2021-11-23 02:30:12,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [4, 4, 4, 4] total 10 [2021-11-23 02:30:12,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784160443] [2021-11-23 02:30:12,619 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 02:30:12,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 02:30:12,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:30:12,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 02:30:12,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-23 02:30:12,621 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 02:30:14,655 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:30:16,664 WARN L534 Checker$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 02:30:22,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:30:22,106 INFO L93 Difference]: Finished difference Result 2526 states and 3625 transitions. [2021-11-23 02:30:22,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 02:30:22,107 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 02:30:22,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:30:22,121 INFO L225 Difference]: With dead ends: 2526 [2021-11-23 02:30:22,122 INFO L226 Difference]: Without dead ends: 2526 [2021-11-23 02:30:22,122 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-11-23 02:30:22,123 INFO L933 BasicCegarLoop]: 850 mSDtfsCounter, 557 mSDsluCounter, 1835 mSDsCounter, 0 mSdLazyCounter, 1104 mSolverCounterSat, 8 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s 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, 9.4s IncrementalHoareTripleChecker+Time [2021-11-23 02:30:22,124 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [557 Valid, 2685 Invalid, 1114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1104 Invalid, 2 Unknown, 0 Unchecked, 9.4s Time] [2021-11-23 02:30:22,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2526 states. [2021-11-23 02:30:22,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2526 to 2401. [2021-11-23 02:30:22,207 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 02:30:22,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2401 states to 2401 states and 3596 transitions. [2021-11-23 02:30:22,222 INFO L78 Accepts]: Start accepts. Automaton has 2401 states and 3596 transitions. Word has length 16 [2021-11-23 02:30:22,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:30:22,222 INFO L470 AbstractCegarLoop]: Abstraction has 2401 states and 3596 transitions. [2021-11-23 02:30:22,223 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 02:30:22,223 INFO L276 IsEmpty]: Start isEmpty. Operand 2401 states and 3596 transitions. [2021-11-23 02:30:22,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-23 02:30:22,224 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:30:22,224 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:30:22,238 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-23 02:30:22,437 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (10)] Ended with exit code 0 [2021-11-23 02:30:22,657 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-23 02:30:22,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:30:22,833 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 02:30:22,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:30:22,833 INFO L85 PathProgramCache]: Analyzing trace with hash -67919898, now seen corresponding path program 1 times [2021-11-23 02:30:22,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:30:22,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1426996780] [2021-11-23 02:30:22,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:30:22,834 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:30:22,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:30:22,835 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:30:22,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-23 02:30:23,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:30:23,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 02:30:23,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:30:23,470 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 02:30:23,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:30:24,048 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 02:30:24,048 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:30:24,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1426996780] [2021-11-23 02:30:24,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1426996780] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:30:24,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1454795801] [2021-11-23 02:30:24,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:30:24,049 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 02:30:24,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/cvc4 [2021-11-23 02:30:24,055 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 02:30:24,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-23 02:30:24,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:30:24,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 02:30:24,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:30:24,938 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 02:30:24,938 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:30:25,206 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 02:30:25,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1454795801] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:30:25,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2113223655] [2021-11-23 02:30:25,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:30:25,208 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:30:25,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:30:25,209 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:30:25,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-23 02:30:25,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:30:25,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 02:30:25,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:30:25,662 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 02:30:25,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:30:25,919 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 02:30:25,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2113223655] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:30:25,919 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-23 02:30:25,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4, 5, 4, 5] total 9 [2021-11-23 02:30:25,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053757126] [2021-11-23 02:30:25,920 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-23 02:30:25,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 02:30:25,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:30:25,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 02:30:25,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-23 02:30:25,921 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 02:30:27,944 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:30:29,953 WARN L534 Checker$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 02:30:31,966 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 02:30:41,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:30:41,662 INFO L93 Difference]: Finished difference Result 2998 states and 4330 transitions. [2021-11-23 02:30:41,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-23 02:30:41,663 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 02:30:41,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:30:41,680 INFO L225 Difference]: With dead ends: 2998 [2021-11-23 02:30:41,680 INFO L226 Difference]: Without dead ends: 2998 [2021-11-23 02:30:41,681 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=73, Invalid=109, Unknown=0, NotChecked=0, Total=182 [2021-11-23 02:30:41,681 INFO L933 BasicCegarLoop]: 827 mSDtfsCounter, 1505 mSDsluCounter, 2439 mSDsCounter, 0 mSdLazyCounter, 1506 mSolverCounterSat, 210 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.1s 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, 15.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:30:41,682 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1517 Valid, 3266 Invalid, 1719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 1506 Invalid, 3 Unknown, 0 Unchecked, 15.0s Time] [2021-11-23 02:30:41,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2998 states. [2021-11-23 02:30:41,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2998 to 2510. [2021-11-23 02:30:41,782 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 02:30:41,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2510 states to 2510 states and 3748 transitions. [2021-11-23 02:30:41,792 INFO L78 Accepts]: Start accepts. Automaton has 2510 states and 3748 transitions. Word has length 17 [2021-11-23 02:30:41,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:30:41,792 INFO L470 AbstractCegarLoop]: Abstraction has 2510 states and 3748 transitions. [2021-11-23 02:30:41,792 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 02:30:41,792 INFO L276 IsEmpty]: Start isEmpty. Operand 2510 states and 3748 transitions. [2021-11-23 02:30:41,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-23 02:30:41,794 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:30:41,794 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:30:41,812 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-23 02:30:42,031 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-11-23 02:30:42,211 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (13)] Ended with exit code 0 [2021-11-23 02:30:42,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt [2021-11-23 02:30:42,409 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 02:30:42,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:30:42,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1241117018, now seen corresponding path program 2 times [2021-11-23 02:30:42,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:30:42,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2066692114] [2021-11-23 02:30:42,410 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 02:30:42,410 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:30:42,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:30:42,411 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:30:42,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-23 02:30:42,771 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 02:30:42,771 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 02:30:42,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-23 02:30:42,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:30:43,372 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 02:30:43,373 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:30:45,391 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 02:30:45,391 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:30:45,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2066692114] [2021-11-23 02:30:45,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2066692114] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:30:45,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [93227901] [2021-11-23 02:30:45,391 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 02:30:45,391 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 02:30:45,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/cvc4 [2021-11-23 02:30:45,392 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 02:30:45,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2021-11-23 02:30:46,405 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 02:30:46,405 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 02:30:46,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 02:30:46,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:30:46,836 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 02:30:46,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:30:49,007 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 02:30:49,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [93227901] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:30:49,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132273453] [2021-11-23 02:30:49,008 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 02:30:49,008 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:30:49,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:30:49,013 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:30:49,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-23 02:31:05,454 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 02:31:05,454 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 02:31:05,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-23 02:31:05,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:31:05,834 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 02:31:05,834 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:31:08,474 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 02:31:08,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2132273453] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:31:08,475 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-23 02:31:08,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 8, 9, 8, 10] total 30 [2021-11-23 02:31:08,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348395441] [2021-11-23 02:31:08,475 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-23 02:31:08,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-23 02:31:08,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:31:08,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-23 02:31:08,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=713, Unknown=0, NotChecked=0, Total=930 [2021-11-23 02:31:08,477 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 02:31:10,497 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 02:31:12,507 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:31:14,514 WARN L534 Checker$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 02:32:30,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:32:30,087 INFO L93 Difference]: Finished difference Result 3501 states and 4875 transitions. [2021-11-23 02:32:30,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-23 02:32:30,088 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 02:32:30,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:32:30,109 INFO L225 Difference]: With dead ends: 3501 [2021-11-23 02:32:30,110 INFO L226 Difference]: Without dead ends: 3501 [2021-11-23 02:32:30,111 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 559 ImplicationChecksByTransitivity, 16.4s TimeCoverageRelationStatistics Valid=611, Invalid=1839, Unknown=0, NotChecked=0, Total=2450 [2021-11-23 02:32:30,112 INFO L933 BasicCegarLoop]: 736 mSDtfsCounter, 4225 mSDsluCounter, 12990 mSDsCounter, 0 mSdLazyCounter, 11048 mSolverCounterSat, 602 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 64.0s 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, 69.7s IncrementalHoareTripleChecker+Time [2021-11-23 02:32:30,112 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4237 Valid, 13726 Invalid, 11653 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [602 Valid, 11048 Invalid, 3 Unknown, 0 Unchecked, 69.7s Time] [2021-11-23 02:32:30,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3501 states. [2021-11-23 02:32:30,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3501 to 2572. [2021-11-23 02:32:30,205 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 02:32:30,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2572 states to 2572 states and 3851 transitions. [2021-11-23 02:32:30,215 INFO L78 Accepts]: Start accepts. Automaton has 2572 states and 3851 transitions. Word has length 29 [2021-11-23 02:32:30,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:32:30,215 INFO L470 AbstractCegarLoop]: Abstraction has 2572 states and 3851 transitions. [2021-11-23 02:32:30,216 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 02:32:30,216 INFO L276 IsEmpty]: Start isEmpty. Operand 2572 states and 3851 transitions. [2021-11-23 02:32:30,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-23 02:32:30,218 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:32:30,218 INFO L514 BasicCegarLoop]: trace histogram [15, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:32:30,235 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-23 02:32:30,442 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (16)] Ended with exit code 0 [2021-11-23 02:32:30,664 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2021-11-23 02:32:30,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:32:30,835 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 02:32:30,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:32:30,836 INFO L85 PathProgramCache]: Analyzing trace with hash 495619110, now seen corresponding path program 3 times [2021-11-23 02:32:30,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 02:32:30,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1635451353] [2021-11-23 02:32:30,836 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 02:32:30,837 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 02:32:30,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 02:32:30,837 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 02:32:30,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-23 02:32:32,008 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2021-11-23 02:32:32,009 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 02:32:32,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-23 02:32:32,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:32:32,307 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 02:32:32,307 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:32:32,936 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 02:32:32,936 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 02:32:32,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1635451353] [2021-11-23 02:32:32,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1635451353] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:32:32,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1959932353] [2021-11-23 02:32:32,937 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 02:32:32,937 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 02:32:32,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/cvc4 [2021-11-23 02:32:32,943 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 02:32:32,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-11-23 02:32:36,173 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2021-11-23 02:32:36,173 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 02:32:36,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-23 02:32:36,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:32:37,565 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 02:32:37,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:33:00,991 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 02:33:00,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1959932353] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:33:00,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808779404] [2021-11-23 02:33:00,992 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 02:33:00,992 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:33:00,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:33:00,992 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:33:00,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf936166-faa9-405f-98f5-1c60cadef568/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-23 02:37:50,502 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2021-11-23 02:37:50,502 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 02:37:50,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-23 02:37:50,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:37:51,093 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 128 proven. 155 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-23 02:37:51,093 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:38:06,529 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 02:38:06,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [808779404] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:38:06,529 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-23 02:38:06,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 14, 26, 13, 19] total 79 [2021-11-23 02:38:06,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093402618] [2021-11-23 02:38:06,530 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-23 02:38:06,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2021-11-23 02:38:06,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 02:38:06,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2021-11-23 02:38:06,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1032, Invalid=5130, Unknown=0, NotChecked=0, Total=6162 [2021-11-23 02:38:06,535 INFO L87 Difference]: Start difference. First operand 2572 states and 3851 transitions. Second operand has 79 states, 79 states have (on average 2.632911392405063) internal successors, (208), 79 states have internal predecessors, (208), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-23 02:38:08,553 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:38:10,562 WARN L534 Checker$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 02:38:12,576 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:38:14,584 WARN L534 Checker$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 02:38:16,595 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:38:18,605 WARN L534 Checker$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 02:38:20,616 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:38:22,624 WARN L534 Checker$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 02:38:24,633 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:38:26,645 WARN L534 Checker$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 02:38:28,654 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:38:30,667 WARN L534 Checker$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 02:38:32,675 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:38:34,687 WARN L534 Checker$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 02:38:36,697 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:38:38,707 WARN L534 Checker$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 02:38:40,715 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:38:42,727 WARN L534 Checker$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 02:38:44,738 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:38:46,748 WARN L534 Checker$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 02:38:48,758 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:38:50,767 WARN L534 Checker$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 02:38:52,776 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:38:54,793 WARN L534 Checker$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 02:39:18,401 WARN L227 SmtUtils]: Spent 5.97s on a formula simplification. DAG size of input: 117 DAG size of output: 106 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:39:24,722 WARN L227 SmtUtils]: Spent 5.80s on a formula simplification. DAG size of input: 124 DAG size of output: 113 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)