./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outw_p.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b5317dae Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outw_p.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7b53e6434f29888ec2b0851eb0bdc5bf356c532d72069865339d3ff2265f37df --- Real Ultimate output --- This is Ultimate 0.2.2-?-b5317da-m [2023-02-16 03:41:18,450 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-16 03:41:18,451 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-16 03:41:18,476 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-16 03:41:18,477 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-16 03:41:18,479 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-16 03:41:18,480 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-16 03:41:18,482 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-16 03:41:18,484 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-16 03:41:18,487 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-16 03:41:18,488 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-16 03:41:18,490 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-16 03:41:18,491 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-16 03:41:18,494 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-16 03:41:18,495 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-16 03:41:18,496 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-16 03:41:18,497 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-16 03:41:18,499 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-16 03:41:18,499 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-16 03:41:18,508 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-16 03:41:18,509 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-16 03:41:18,509 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-16 03:41:18,510 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-16 03:41:18,511 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-16 03:41:18,517 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-16 03:41:18,517 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-16 03:41:18,518 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-16 03:41:18,519 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-16 03:41:18,519 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-16 03:41:18,520 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-16 03:41:18,520 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-16 03:41:18,522 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-16 03:41:18,523 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-16 03:41:18,523 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-16 03:41:18,524 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-16 03:41:18,524 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-16 03:41:18,524 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-16 03:41:18,525 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-16 03:41:18,525 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-16 03:41:18,526 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-16 03:41:18,527 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-16 03:41:18,527 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-02-16 03:41:18,554 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-16 03:41:18,554 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-16 03:41:18,554 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-16 03:41:18,555 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-16 03:41:18,555 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-16 03:41:18,555 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-16 03:41:18,556 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-16 03:41:18,556 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-16 03:41:18,556 INFO L138 SettingsManager]: * Use SBE=true [2023-02-16 03:41:18,556 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-16 03:41:18,557 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-16 03:41:18,557 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-16 03:41:18,557 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-16 03:41:18,557 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-16 03:41:18,558 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-16 03:41:18,558 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-16 03:41:18,558 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-16 03:41:18,558 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-16 03:41:18,558 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-16 03:41:18,558 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-16 03:41:18,559 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-16 03:41:18,559 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-16 03:41:18,559 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-16 03:41:18,559 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-16 03:41:18,559 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-16 03:41:18,559 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 03:41:18,560 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-16 03:41:18,560 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-16 03:41:18,560 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-16 03:41:18,560 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-16 03:41:18,560 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-16 03:41:18,560 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-16 03:41:18,561 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-16 03:41:18,561 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-16 03:41:18,561 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7b53e6434f29888ec2b0851eb0bdc5bf356c532d72069865339d3ff2265f37df [2023-02-16 03:41:18,766 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-16 03:41:18,784 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-16 03:41:18,787 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-16 03:41:18,788 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-16 03:41:18,788 INFO L275 PluginConnector]: CDTParser initialized [2023-02-16 03:41:18,790 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outw_p.i [2023-02-16 03:41:19,832 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-16 03:41:20,134 INFO L351 CDTParser]: Found 1 translation units. [2023-02-16 03:41:20,134 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outw_p.i [2023-02-16 03:41:20,154 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8dd8a8c8a/54ff41c28c8845459eacc2d3cb84f7c2/FLAG2115b539c [2023-02-16 03:41:20,164 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8dd8a8c8a/54ff41c28c8845459eacc2d3cb84f7c2 [2023-02-16 03:41:20,166 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-16 03:41:20,167 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-16 03:41:20,168 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-16 03:41:20,168 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-16 03:41:20,171 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-16 03:41:20,172 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 03:41:20" (1/1) ... [2023-02-16 03:41:20,173 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bc361f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:41:20, skipping insertion in model container [2023-02-16 03:41:20,173 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 03:41:20" (1/1) ... [2023-02-16 03:41:20,178 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-16 03:41:20,239 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-16 03:41:20,373 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outw_p.i[458,471] [2023-02-16 03:41:20,885 WARN L623 FunctionHandler]: Unknown extern function misc_register [2023-02-16 03:41:20,886 WARN L623 FunctionHandler]: Unknown extern function register_reboot_notifier [2023-02-16 03:41:20,889 WARN L623 FunctionHandler]: Unknown extern function misc_deregister [2023-02-16 03:41:20,892 WARN L623 FunctionHandler]: Unknown extern function misc_deregister [2023-02-16 03:41:20,892 WARN L623 FunctionHandler]: Unknown extern function unregister_reboot_notifier [2023-02-16 03:41:21,012 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_nondet_sector_t [2023-02-16 03:41:21,155 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 03:41:21,175 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-02-16 03:41:21,175 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4c9b4cfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:41:21, skipping insertion in model container [2023-02-16 03:41:21,176 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-16 03:41:21,176 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-02-16 03:41:21,177 INFO L158 Benchmark]: Toolchain (without parser) took 1009.79ms. Allocated memory is still 186.6MB. Free memory was 135.7MB in the beginning and 146.6MB in the end (delta: -10.9MB). Peak memory consumption was 47.5MB. Max. memory is 16.1GB. [2023-02-16 03:41:21,178 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 138.4MB. Free memory is still 80.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-16 03:41:21,178 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1008.26ms. Allocated memory is still 186.6MB. Free memory was 135.7MB in the beginning and 146.6MB in the end (delta: -10.9MB). Peak memory consumption was 47.5MB. Max. memory is 16.1GB. [2023-02-16 03:41:21,179 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 138.4MB. Free memory is still 80.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1008.26ms. Allocated memory is still 186.6MB. Free memory was 135.7MB in the beginning and 146.6MB in the end (delta: -10.9MB). Peak memory consumption was 47.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2975]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outw_p.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7b53e6434f29888ec2b0851eb0bdc5bf356c532d72069865339d3ff2265f37df --- Real Ultimate output --- This is Ultimate 0.2.2-?-b5317da-m [2023-02-16 03:41:22,824 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-16 03:41:22,826 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-16 03:41:22,856 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-16 03:41:22,856 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-16 03:41:22,859 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-16 03:41:22,860 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-16 03:41:22,862 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-16 03:41:22,865 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-16 03:41:22,866 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-16 03:41:22,867 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-16 03:41:22,869 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-16 03:41:22,869 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-16 03:41:22,874 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-16 03:41:22,875 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-16 03:41:22,878 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-16 03:41:22,879 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-16 03:41:22,880 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-16 03:41:22,881 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-16 03:41:22,884 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-16 03:41:22,885 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-16 03:41:22,886 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-16 03:41:22,887 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-16 03:41:22,888 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-16 03:41:22,893 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-16 03:41:22,893 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-16 03:41:22,894 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-16 03:41:22,895 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-16 03:41:22,895 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-16 03:41:22,896 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-16 03:41:22,896 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-16 03:41:22,897 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-16 03:41:22,898 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-16 03:41:22,899 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-16 03:41:22,900 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-16 03:41:22,900 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-16 03:41:22,900 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-16 03:41:22,900 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-16 03:41:22,901 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-16 03:41:22,901 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-16 03:41:22,902 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-16 03:41:22,902 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-02-16 03:41:22,938 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-16 03:41:22,938 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-16 03:41:22,939 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-16 03:41:22,939 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-16 03:41:22,940 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-16 03:41:22,940 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-16 03:41:22,940 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-16 03:41:22,941 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-16 03:41:22,941 INFO L138 SettingsManager]: * Use SBE=true [2023-02-16 03:41:22,941 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-16 03:41:22,942 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-16 03:41:22,942 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-16 03:41:22,942 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-16 03:41:22,942 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-16 03:41:22,942 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-16 03:41:22,943 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-16 03:41:22,943 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-16 03:41:22,943 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-16 03:41:22,943 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-16 03:41:22,943 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-16 03:41:22,943 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-02-16 03:41:22,943 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-02-16 03:41:22,944 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-16 03:41:22,944 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-16 03:41:22,944 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-16 03:41:22,944 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-16 03:41:22,944 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-16 03:41:22,944 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 03:41:22,945 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-16 03:41:22,945 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-16 03:41:22,945 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-02-16 03:41:22,945 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-02-16 03:41:22,945 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-16 03:41:22,946 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-16 03:41:22,946 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-16 03:41:22,946 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-02-16 03:41:22,946 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-16 03:41:22,946 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7b53e6434f29888ec2b0851eb0bdc5bf356c532d72069865339d3ff2265f37df [2023-02-16 03:41:23,219 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-16 03:41:23,236 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-16 03:41:23,253 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-16 03:41:23,254 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-16 03:41:23,254 INFO L275 PluginConnector]: CDTParser initialized [2023-02-16 03:41:23,255 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outw_p.i [2023-02-16 03:41:24,306 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-16 03:41:24,597 INFO L351 CDTParser]: Found 1 translation units. [2023-02-16 03:41:24,597 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outw_p.i [2023-02-16 03:41:24,646 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40542843f/eb5fff1f70bb4c5ba76e2476102e7c66/FLAG580d4077e [2023-02-16 03:41:24,661 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40542843f/eb5fff1f70bb4c5ba76e2476102e7c66 [2023-02-16 03:41:24,664 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-16 03:41:24,666 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-16 03:41:24,667 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-16 03:41:24,667 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-16 03:41:24,670 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-16 03:41:24,671 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 03:41:24" (1/1) ... [2023-02-16 03:41:24,673 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cf84e50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:41:24, skipping insertion in model container [2023-02-16 03:41:24,673 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 03:41:24" (1/1) ... [2023-02-16 03:41:24,679 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-16 03:41:24,787 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-16 03:41:24,930 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outw_p.i[458,471] [2023-02-16 03:41:25,276 WARN L623 FunctionHandler]: Unknown extern function misc_register [2023-02-16 03:41:25,278 WARN L623 FunctionHandler]: Unknown extern function register_reboot_notifier [2023-02-16 03:41:25,279 WARN L623 FunctionHandler]: Unknown extern function misc_deregister [2023-02-16 03:41:25,280 WARN L623 FunctionHandler]: Unknown extern function misc_deregister [2023-02-16 03:41:25,280 WARN L623 FunctionHandler]: Unknown extern function unregister_reboot_notifier [2023-02-16 03:41:25,370 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_nondet_sector_t [2023-02-16 03:41:25,510 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 03:41:25,549 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-02-16 03:41:25,576 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-16 03:41:25,579 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outw_p.i[458,471] [2023-02-16 03:41:25,640 WARN L623 FunctionHandler]: Unknown extern function misc_register [2023-02-16 03:41:25,641 WARN L623 FunctionHandler]: Unknown extern function register_reboot_notifier [2023-02-16 03:41:25,642 WARN L623 FunctionHandler]: Unknown extern function misc_deregister [2023-02-16 03:41:25,642 WARN L623 FunctionHandler]: Unknown extern function misc_deregister [2023-02-16 03:41:25,642 WARN L623 FunctionHandler]: Unknown extern function unregister_reboot_notifier [2023-02-16 03:41:25,678 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_nondet_sector_t [2023-02-16 03:41:25,719 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 03:41:25,732 INFO L203 MainTranslator]: Completed pre-run [2023-02-16 03:41:25,740 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outw_p.i[458,471] [2023-02-16 03:41:25,778 WARN L623 FunctionHandler]: Unknown extern function misc_register [2023-02-16 03:41:25,779 WARN L623 FunctionHandler]: Unknown extern function register_reboot_notifier [2023-02-16 03:41:25,780 WARN L623 FunctionHandler]: Unknown extern function misc_deregister [2023-02-16 03:41:25,780 WARN L623 FunctionHandler]: Unknown extern function misc_deregister [2023-02-16 03:41:25,781 WARN L623 FunctionHandler]: Unknown extern function unregister_reboot_notifier [2023-02-16 03:41:25,797 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_nondet_sector_t [2023-02-16 03:41:25,861 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 03:41:25,966 INFO L208 MainTranslator]: Completed translation [2023-02-16 03:41:25,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:41:25 WrapperNode [2023-02-16 03:41:25,968 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-16 03:41:25,968 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-16 03:41:25,969 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-16 03:41:25,969 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-16 03:41:25,974 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:41:25" (1/1) ... [2023-02-16 03:41:26,022 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:41:25" (1/1) ... [2023-02-16 03:41:26,068 INFO L138 Inliner]: procedures = 482, calls = 839, calls flagged for inlining = 54, calls inlined = 37, statements flattened = 966 [2023-02-16 03:41:26,069 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-16 03:41:26,069 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-16 03:41:26,070 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-16 03:41:26,070 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-16 03:41:26,085 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:41:25" (1/1) ... [2023-02-16 03:41:26,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:41:25" (1/1) ... [2023-02-16 03:41:26,094 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:41:25" (1/1) ... [2023-02-16 03:41:26,099 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:41:25" (1/1) ... [2023-02-16 03:41:26,130 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:41:25" (1/1) ... [2023-02-16 03:41:26,137 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:41:25" (1/1) ... [2023-02-16 03:41:26,143 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:41:25" (1/1) ... [2023-02-16 03:41:26,152 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:41:25" (1/1) ... [2023-02-16 03:41:26,167 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-16 03:41:26,174 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-16 03:41:26,174 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-16 03:41:26,174 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-16 03:41:26,175 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:41:25" (1/1) ... [2023-02-16 03:41:26,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 03:41:26,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 03:41:26,198 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-16 03:41:26,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-16 03:41:26,235 INFO L130 BoogieDeclarations]: Found specification of procedure zf_timer_off [2023-02-16 03:41:26,236 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_timer_off [2023-02-16 03:41:26,236 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~C_UINT~X~C_ULONG~TO~C_INT [2023-02-16 03:41:26,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~C_UINT~X~C_ULONG~TO~C_INT [2023-02-16 03:41:26,236 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-02-16 03:41:26,237 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_atomic_begin [2023-02-16 03:41:26,237 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-02-16 03:41:26,237 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-02-16 03:41:26,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-16 03:41:26,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2023-02-16 03:41:26,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-02-16 03:41:26,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-02-16 03:41:26,238 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2023-02-16 03:41:26,238 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2023-02-16 03:41:26,238 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-02-16 03:41:26,238 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_atomic_end [2023-02-16 03:41:26,239 INFO L130 BoogieDeclarations]: Found specification of procedure zf_get_control [2023-02-16 03:41:26,239 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_get_control [2023-02-16 03:41:26,239 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2023-02-16 03:41:26,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2023-02-16 03:41:26,239 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-16 03:41:26,239 INFO L130 BoogieDeclarations]: Found specification of procedure request_region [2023-02-16 03:41:26,239 INFO L138 BoogieDeclarations]: Found implementation of procedure request_region [2023-02-16 03:41:26,239 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-16 03:41:26,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-16 03:41:26,239 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-02-16 03:41:26,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-02-16 03:41:26,240 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irqsave [2023-02-16 03:41:26,240 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irqsave [2023-02-16 03:41:26,240 INFO L130 BoogieDeclarations]: Found specification of procedure release_region [2023-02-16 03:41:26,240 INFO L138 BoogieDeclarations]: Found implementation of procedure release_region [2023-02-16 03:41:26,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-16 03:41:26,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-16 03:41:26,241 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_init [2023-02-16 03:41:26,241 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_init [2023-02-16 03:41:26,241 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2023-02-16 03:41:26,241 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-02-16 03:41:26,241 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2023-02-16 03:41:26,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-02-16 03:41:26,241 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-02-16 03:41:26,241 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-02-16 03:41:26,242 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2023-02-16 03:41:26,242 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2023-02-16 03:41:26,242 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-16 03:41:26,242 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-16 03:41:26,242 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2023-02-16 03:41:26,242 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2023-02-16 03:41:26,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2023-02-16 03:41:26,242 INFO L130 BoogieDeclarations]: Found specification of procedure cdev_add [2023-02-16 03:41:26,242 INFO L138 BoogieDeclarations]: Found implementation of procedure cdev_add [2023-02-16 03:41:26,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2023-02-16 03:41:26,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2023-02-16 03:41:26,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-02-16 03:41:26,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-02-16 03:41:26,243 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-02-16 03:41:26,243 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-02-16 03:41:26,243 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2023-02-16 03:41:26,243 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2023-02-16 03:41:26,244 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2023-02-16 03:41:26,244 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2023-02-16 03:41:26,244 INFO L130 BoogieDeclarations]: Found specification of procedure misc_deregister [2023-02-16 03:41:26,244 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_deregister [2023-02-16 03:41:26,244 INFO L130 BoogieDeclarations]: Found specification of procedure assert_context_process [2023-02-16 03:41:26,244 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_context_process [2023-02-16 03:41:26,245 INFO L130 BoogieDeclarations]: Found specification of procedure zf_set_control [2023-02-16 03:41:26,245 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_set_control [2023-02-16 03:41:26,245 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~C_ULONG~X~$Pointer$~TO~C_LONG [2023-02-16 03:41:26,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~C_ULONG~X~$Pointer$~TO~C_LONG [2023-02-16 03:41:26,245 INFO L130 BoogieDeclarations]: Found specification of procedure zf_readw [2023-02-16 03:41:26,246 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_readw [2023-02-16 03:41:26,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2023-02-16 03:41:26,246 INFO L130 BoogieDeclarations]: Found specification of procedure zf_ping [2023-02-16 03:41:26,246 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_ping [2023-02-16 03:41:26,247 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2023-02-16 03:41:26,247 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2023-02-16 03:41:26,247 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~C_ULONG~TO~VOID [2023-02-16 03:41:26,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~C_ULONG~TO~VOID [2023-02-16 03:41:26,547 INFO L235 CfgBuilder]: Building ICFG [2023-02-16 03:41:26,549 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-16 03:41:30,645 INFO L276 CfgBuilder]: Performing block encoding [2023-02-16 03:41:30,659 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-16 03:41:30,659 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2023-02-16 03:41:30,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 03:41:30 BoogieIcfgContainer [2023-02-16 03:41:30,662 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-16 03:41:30,665 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-16 03:41:30,665 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-16 03:41:30,667 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-16 03:41:30,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.02 03:41:24" (1/3) ... [2023-02-16 03:41:30,668 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b7e776e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 03:41:30, skipping insertion in model container [2023-02-16 03:41:30,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:41:25" (2/3) ... [2023-02-16 03:41:30,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b7e776e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 03:41:30, skipping insertion in model container [2023-02-16 03:41:30,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 03:41:30" (3/3) ... [2023-02-16 03:41:30,673 INFO L112 eAbstractionObserver]: Analyzing ICFG ddv_machzwd_outw_p.i [2023-02-16 03:41:30,687 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-16 03:41:30,688 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 205 error locations. [2023-02-16 03:41:30,742 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-16 03:41:30,748 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@774020af, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-16 03:41:30,748 INFO L358 AbstractCegarLoop]: Starting to check reachability of 205 error locations. [2023-02-16 03:41:30,755 INFO L276 IsEmpty]: Start isEmpty. Operand has 664 states, 354 states have (on average 1.8220338983050848) internal successors, (645), 565 states have internal predecessors, (645), 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) [2023-02-16 03:41:30,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-02-16 03:41:30,764 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:41:30,765 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-02-16 03:41:30,765 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 202 more)] === [2023-02-16 03:41:30,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:41:30,770 INFO L85 PathProgramCache]: Analyzing trace with hash 327228190, now seen corresponding path program 1 times [2023-02-16 03:41:30,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:41:30,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1738356853] [2023-02-16 03:41:30,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:41:30,782 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 03:41:30,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:41:30,787 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-16 03:41:30,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-02-16 03:41:31,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:41:31,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-16 03:41:31,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:41:31,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:41:31,163 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 03:41:31,164 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:41:31,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1738356853] [2023-02-16 03:41:31,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1738356853] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:41:31,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:41:31,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 03:41:31,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201375898] [2023-02-16 03:41:31,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:41:31,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-16 03:41:31,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:41:31,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-16 03:41:31,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-16 03:41:31,195 INFO L87 Difference]: Start difference. First operand has 664 states, 354 states have (on average 1.8220338983050848) internal successors, (645), 565 states have internal predecessors, (645), 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 5 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:41:33,221 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 03:41:35,225 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 03:41:37,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:41:37,213 INFO L93 Difference]: Finished difference Result 1200 states and 1437 transitions. [2023-02-16 03:41:37,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-16 03:41:37,215 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-02-16 03:41:37,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:41:37,230 INFO L225 Difference]: With dead ends: 1200 [2023-02-16 03:41:37,231 INFO L226 Difference]: Without dead ends: 1196 [2023-02-16 03:41:37,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-02-16 03:41:37,234 INFO L413 NwaCegarLoop]: 753 mSDtfsCounter, 684 mSDsluCounter, 1710 mSDsCounter, 0 mSdLazyCounter, 1106 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 685 SdHoareTripleChecker+Valid, 2463 SdHoareTripleChecker+Invalid, 1112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1106 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2023-02-16 03:41:37,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [685 Valid, 2463 Invalid, 1112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1106 Invalid, 2 Unknown, 0 Unchecked, 5.9s Time] [2023-02-16 03:41:37,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1196 states. [2023-02-16 03:41:37,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1196 to 983. [2023-02-16 03:41:37,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 983 states, 590 states have (on average 1.805084745762712) internal successors, (1065), 812 states have internal predecessors, (1065), 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) [2023-02-16 03:41:37,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 983 states to 983 states and 1341 transitions. [2023-02-16 03:41:37,393 INFO L78 Accepts]: Start accepts. Automaton has 983 states and 1341 transitions. Word has length 5 [2023-02-16 03:41:37,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:41:37,393 INFO L495 AbstractCegarLoop]: Abstraction has 983 states and 1341 transitions. [2023-02-16 03:41:37,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:41:37,393 INFO L276 IsEmpty]: Start isEmpty. Operand 983 states and 1341 transitions. [2023-02-16 03:41:37,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-02-16 03:41:37,394 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:41:37,394 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-02-16 03:41:37,404 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-02-16 03:41:37,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 03:41:37,604 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 202 more)] === [2023-02-16 03:41:37,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:41:37,605 INFO L85 PathProgramCache]: Analyzing trace with hash 327228191, now seen corresponding path program 1 times [2023-02-16 03:41:37,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:41:37,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [131780172] [2023-02-16 03:41:37,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:41:37,606 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 03:41:37,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:41:37,607 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-16 03:41:37,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-02-16 03:41:37,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:41:37,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-16 03:41:37,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:41:38,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:41:38,013 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 03:41:38,014 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:41:38,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [131780172] [2023-02-16 03:41:38,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [131780172] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:41:38,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:41:38,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 03:41:38,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750141921] [2023-02-16 03:41:38,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:41:38,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-16 03:41:38,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:41:38,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-16 03:41:38,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-16 03:41:38,016 INFO L87 Difference]: Start difference. First operand 983 states and 1341 transitions. Second operand has 5 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:41:40,038 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 03:41:42,048 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 03:41:43,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:41:43,683 INFO L93 Difference]: Finished difference Result 1115 states and 1433 transitions. [2023-02-16 03:41:43,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-16 03:41:43,684 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-02-16 03:41:43,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:41:43,689 INFO L225 Difference]: With dead ends: 1115 [2023-02-16 03:41:43,689 INFO L226 Difference]: Without dead ends: 1115 [2023-02-16 03:41:43,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-02-16 03:41:43,690 INFO L413 NwaCegarLoop]: 837 mSDtfsCounter, 268 mSDsluCounter, 1781 mSDsCounter, 0 mSdLazyCounter, 850 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 2618 SdHoareTripleChecker+Invalid, 853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 850 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-02-16 03:41:43,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 2618 Invalid, 853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 850 Invalid, 2 Unknown, 0 Unchecked, 5.6s Time] [2023-02-16 03:41:43,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1115 states. [2023-02-16 03:41:43,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1115 to 1056. [2023-02-16 03:41:43,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1056 states, 631 states have (on average 1.7670364500792393) internal successors, (1115), 854 states have internal predecessors, (1115), 157 states have call successors, (157), 63 states have call predecessors, (157), 63 states have return successors, (157), 150 states have call predecessors, (157), 157 states have call successors, (157) [2023-02-16 03:41:43,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1056 states to 1056 states and 1429 transitions. [2023-02-16 03:41:43,745 INFO L78 Accepts]: Start accepts. Automaton has 1056 states and 1429 transitions. Word has length 5 [2023-02-16 03:41:43,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:41:43,745 INFO L495 AbstractCegarLoop]: Abstraction has 1056 states and 1429 transitions. [2023-02-16 03:41:43,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:41:43,746 INFO L276 IsEmpty]: Start isEmpty. Operand 1056 states and 1429 transitions. [2023-02-16 03:41:43,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-02-16 03:41:43,747 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:41:43,747 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:41:43,758 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-02-16 03:41:43,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 03:41:43,958 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 202 more)] === [2023-02-16 03:41:43,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:41:43,959 INFO L85 PathProgramCache]: Analyzing trace with hash -27521378, now seen corresponding path program 1 times [2023-02-16 03:41:43,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:41:43,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1346044049] [2023-02-16 03:41:43,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:41:43,960 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 03:41:43,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:41:43,961 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-16 03:41:43,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-02-16 03:41:44,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:41:44,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-16 03:41:44,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:41:44,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:41:44,356 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 03:41:44,356 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:41:44,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1346044049] [2023-02-16 03:41:44,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1346044049] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:41:44,357 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:41:44,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-02-16 03:41:44,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047603145] [2023-02-16 03:41:44,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:41:44,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 03:41:44,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:41:44,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 03:41:44,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 03:41:44,359 INFO L87 Difference]: Start difference. First operand 1056 states and 1429 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-16 03:41:45,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:41:45,353 INFO L93 Difference]: Finished difference Result 1262 states and 1516 transitions. [2023-02-16 03:41:45,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 03:41:45,354 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-02-16 03:41:45,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:41:45,358 INFO L225 Difference]: With dead ends: 1262 [2023-02-16 03:41:45,358 INFO L226 Difference]: Without dead ends: 1262 [2023-02-16 03:41:45,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 03:41:45,359 INFO L413 NwaCegarLoop]: 739 mSDtfsCounter, 657 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 657 SdHoareTripleChecker+Valid, 1284 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-02-16 03:41:45,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [657 Valid, 1284 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-02-16 03:41:45,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1262 states. [2023-02-16 03:41:45,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1262 to 1055. [2023-02-16 03:41:45,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1055 states, 631 states have (on average 1.7591125198098256) internal successors, (1110), 853 states have internal predecessors, (1110), 157 states have call successors, (157), 63 states have call predecessors, (157), 63 states have return successors, (157), 150 states have call predecessors, (157), 157 states have call successors, (157) [2023-02-16 03:41:45,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1055 states to 1055 states and 1424 transitions. [2023-02-16 03:41:45,381 INFO L78 Accepts]: Start accepts. Automaton has 1055 states and 1424 transitions. Word has length 11 [2023-02-16 03:41:45,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:41:45,382 INFO L495 AbstractCegarLoop]: Abstraction has 1055 states and 1424 transitions. [2023-02-16 03:41:45,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-16 03:41:45,387 INFO L276 IsEmpty]: Start isEmpty. Operand 1055 states and 1424 transitions. [2023-02-16 03:41:45,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-02-16 03:41:45,387 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:41:45,387 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:41:45,401 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-02-16 03:41:45,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 03:41:45,598 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 202 more)] === [2023-02-16 03:41:45,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:41:45,599 INFO L85 PathProgramCache]: Analyzing trace with hash -27521377, now seen corresponding path program 1 times [2023-02-16 03:41:45,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:41:45,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [524240821] [2023-02-16 03:41:45,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:41:45,600 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 03:41:45,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:41:45,601 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-16 03:41:45,604 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-02-16 03:41:45,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:41:45,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-16 03:41:45,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:41:45,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:41:45,997 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 03:41:45,997 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:41:45,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [524240821] [2023-02-16 03:41:45,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [524240821] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:41:45,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:41:45,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-16 03:41:45,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326359984] [2023-02-16 03:41:45,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:41:45,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-16 03:41:45,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:41:45,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-16 03:41:45,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-16 03:41:45,999 INFO L87 Difference]: Start difference. First operand 1055 states and 1424 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-16 03:41:48,017 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 03:41:49,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:41:49,487 INFO L93 Difference]: Finished difference Result 1121 states and 1439 transitions. [2023-02-16 03:41:49,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-16 03:41:49,488 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-02-16 03:41:49,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:41:49,491 INFO L225 Difference]: With dead ends: 1121 [2023-02-16 03:41:49,491 INFO L226 Difference]: Without dead ends: 1121 [2023-02-16 03:41:49,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-16 03:41:49,492 INFO L413 NwaCegarLoop]: 834 mSDtfsCounter, 259 mSDsluCounter, 1154 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 1988 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-02-16 03:41:49,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 1988 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 574 Invalid, 1 Unknown, 0 Unchecked, 3.4s Time] [2023-02-16 03:41:49,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1121 states. [2023-02-16 03:41:49,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1121 to 1058. [2023-02-16 03:41:49,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1058 states, 634 states have (on average 1.7555205047318612) internal successors, (1113), 856 states have internal predecessors, (1113), 157 states have call successors, (157), 63 states have call predecessors, (157), 63 states have return successors, (157), 150 states have call predecessors, (157), 157 states have call successors, (157) [2023-02-16 03:41:49,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1058 states to 1058 states and 1427 transitions. [2023-02-16 03:41:49,516 INFO L78 Accepts]: Start accepts. Automaton has 1058 states and 1427 transitions. Word has length 11 [2023-02-16 03:41:49,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:41:49,517 INFO L495 AbstractCegarLoop]: Abstraction has 1058 states and 1427 transitions. [2023-02-16 03:41:49,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-16 03:41:49,518 INFO L276 IsEmpty]: Start isEmpty. Operand 1058 states and 1427 transitions. [2023-02-16 03:41:49,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-16 03:41:49,519 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:41:49,519 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:41:49,544 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-02-16 03:41:49,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 03:41:49,733 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 202 more)] === [2023-02-16 03:41:49,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:41:49,733 INFO L85 PathProgramCache]: Analyzing trace with hash 449678287, now seen corresponding path program 1 times [2023-02-16 03:41:49,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:41:49,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [877878272] [2023-02-16 03:41:49,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:41:49,734 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 03:41:49,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:41:49,736 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-16 03:41:49,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-02-16 03:41:50,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:41:50,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-16 03:41:50,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:41:50,177 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:41:50,177 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:41:50,374 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:41:50,375 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:41:50,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [877878272] [2023-02-16 03:41:50,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [877878272] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 03:41:50,375 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 03:41:50,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4] total 7 [2023-02-16 03:41:50,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866480364] [2023-02-16 03:41:50,375 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 03:41:50,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-16 03:41:50,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:41:50,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-16 03:41:50,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-02-16 03:41:50,376 INFO L87 Difference]: Start difference. First operand 1058 states and 1427 transitions. Second operand has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 states have internal predecessors, (24), 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) [2023-02-16 03:41:52,399 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 03:41:54,403 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 03:41:56,407 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 03:41:58,411 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 03:42:02,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:42:02,791 INFO L93 Difference]: Finished difference Result 1331 states and 1673 transitions. [2023-02-16 03:42:02,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-16 03:42:02,792 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 states have internal predecessors, (24), 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 14 [2023-02-16 03:42:02,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:42:02,797 INFO L225 Difference]: With dead ends: 1331 [2023-02-16 03:42:02,797 INFO L226 Difference]: Without dead ends: 1331 [2023-02-16 03:42:02,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2023-02-16 03:42:02,798 INFO L413 NwaCegarLoop]: 835 mSDtfsCounter, 1036 mSDsluCounter, 2360 mSDsCounter, 0 mSdLazyCounter, 1355 mSolverCounterSat, 82 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1048 SdHoareTripleChecker+Valid, 3195 SdHoareTripleChecker+Invalid, 1441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1355 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2023-02-16 03:42:02,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1048 Valid, 3195 Invalid, 1441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1355 Invalid, 4 Unknown, 0 Unchecked, 12.2s Time] [2023-02-16 03:42:02,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1331 states. [2023-02-16 03:42:02,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1331 to 1205. [2023-02-16 03:42:02,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1205 states, 738 states have (on average 1.7411924119241193) internal successors, (1285), 962 states have internal predecessors, (1285), 184 states have call successors, (184), 79 states have call predecessors, (184), 79 states have return successors, (184), 176 states have call predecessors, (184), 184 states have call successors, (184) [2023-02-16 03:42:02,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1205 states to 1205 states and 1653 transitions. [2023-02-16 03:42:02,817 INFO L78 Accepts]: Start accepts. Automaton has 1205 states and 1653 transitions. Word has length 14 [2023-02-16 03:42:02,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:42:02,817 INFO L495 AbstractCegarLoop]: Abstraction has 1205 states and 1653 transitions. [2023-02-16 03:42:02,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 states have internal predecessors, (24), 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) [2023-02-16 03:42:02,818 INFO L276 IsEmpty]: Start isEmpty. Operand 1205 states and 1653 transitions. [2023-02-16 03:42:02,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-16 03:42:02,818 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:42:02,818 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:42:02,829 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-02-16 03:42:03,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 03:42:03,029 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 202 more)] === [2023-02-16 03:42:03,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:42:03,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1064725833, now seen corresponding path program 1 times [2023-02-16 03:42:03,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:42:03,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1645638838] [2023-02-16 03:42:03,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:42:03,030 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 03:42:03,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:42:03,031 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-16 03:42:03,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-02-16 03:42:03,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:42:03,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-16 03:42:03,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:42:03,355 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:42:03,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:42:03,394 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:42:03,395 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:42:03,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1645638838] [2023-02-16 03:42:03,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1645638838] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 03:42:03,395 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 03:42:03,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-02-16 03:42:03,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178893273] [2023-02-16 03:42:03,395 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 03:42:03,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-16 03:42:03,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:42:03,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-16 03:42:03,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-02-16 03:42:03,396 INFO L87 Difference]: Start difference. First operand 1205 states and 1653 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-16 03:42:03,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:42:03,644 INFO L93 Difference]: Finished difference Result 1211 states and 1657 transitions. [2023-02-16 03:42:03,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-16 03:42:03,645 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2023-02-16 03:42:03,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:42:03,649 INFO L225 Difference]: With dead ends: 1211 [2023-02-16 03:42:03,649 INFO L226 Difference]: Without dead ends: 1211 [2023-02-16 03:42:03,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2023-02-16 03:42:03,650 INFO L413 NwaCegarLoop]: 782 mSDtfsCounter, 879 mSDsluCounter, 2142 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 911 SdHoareTripleChecker+Valid, 2924 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-16 03:42:03,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [911 Valid, 2924 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-16 03:42:03,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1211 states. [2023-02-16 03:42:03,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1211 to 1210. [2023-02-16 03:42:03,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1210 states, 743 states have (on average 1.7348586810228803) internal successors, (1289), 967 states have internal predecessors, (1289), 184 states have call successors, (184), 79 states have call predecessors, (184), 79 states have return successors, (184), 176 states have call predecessors, (184), 184 states have call successors, (184) [2023-02-16 03:42:03,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1657 transitions. [2023-02-16 03:42:03,670 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1657 transitions. Word has length 19 [2023-02-16 03:42:03,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:42:03,670 INFO L495 AbstractCegarLoop]: Abstraction has 1210 states and 1657 transitions. [2023-02-16 03:42:03,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-16 03:42:03,670 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1657 transitions. [2023-02-16 03:42:03,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-02-16 03:42:03,671 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:42:03,671 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:42:03,683 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-02-16 03:42:03,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 03:42:03,882 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 202 more)] === [2023-02-16 03:42:03,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:42:03,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1407192417, now seen corresponding path program 2 times [2023-02-16 03:42:03,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:42:03,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [146242242] [2023-02-16 03:42:03,883 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-16 03:42:03,883 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 03:42:03,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:42:03,884 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-16 03:42:03,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-02-16 03:42:04,285 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-16 03:42:04,286 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 03:42:04,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 580 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-16 03:42:04,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:42:04,521 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:42:04,522 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:42:05,120 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:42:05,120 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:42:05,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [146242242] [2023-02-16 03:42:05,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [146242242] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 03:42:05,120 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 03:42:05,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 14 [2023-02-16 03:42:05,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10116458] [2023-02-16 03:42:05,121 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 03:42:05,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-02-16 03:42:05,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:42:05,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-02-16 03:42:05,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2023-02-16 03:42:05,122 INFO L87 Difference]: Start difference. First operand 1210 states and 1657 transitions. Second operand has 15 states, 14 states have (on average 3.0) internal successors, (42), 15 states have internal predecessors, (42), 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) [2023-02-16 03:42:07,142 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 03:42:09,145 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 03:42:11,150 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 03:42:13,155 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 03:42:15,159 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 03:42:17,163 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 03:42:28,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:42:28,432 INFO L93 Difference]: Finished difference Result 1337 states and 1691 transitions. [2023-02-16 03:42:28,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-02-16 03:42:28,432 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.0) internal successors, (42), 15 states have internal predecessors, (42), 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 23 [2023-02-16 03:42:28,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:42:28,436 INFO L225 Difference]: With dead ends: 1337 [2023-02-16 03:42:28,436 INFO L226 Difference]: Without dead ends: 1337 [2023-02-16 03:42:28,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=243, Invalid=407, Unknown=0, NotChecked=0, Total=650 [2023-02-16 03:42:28,437 INFO L413 NwaCegarLoop]: 823 mSDtfsCounter, 701 mSDsluCounter, 5514 mSDsCounter, 0 mSdLazyCounter, 3127 mSolverCounterSat, 81 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 713 SdHoareTripleChecker+Valid, 6337 SdHoareTripleChecker+Invalid, 3214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 3127 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.9s IncrementalHoareTripleChecker+Time [2023-02-16 03:42:28,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [713 Valid, 6337 Invalid, 3214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 3127 Invalid, 6 Unknown, 0 Unchecked, 21.9s Time] [2023-02-16 03:42:28,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1337 states. [2023-02-16 03:42:28,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1337 to 1223. [2023-02-16 03:42:28,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1223 states, 756 states have (on average 1.7261904761904763) internal successors, (1305), 980 states have internal predecessors, (1305), 184 states have call successors, (184), 79 states have call predecessors, (184), 79 states have return successors, (184), 176 states have call predecessors, (184), 184 states have call successors, (184) [2023-02-16 03:42:28,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1223 states to 1223 states and 1673 transitions. [2023-02-16 03:42:28,459 INFO L78 Accepts]: Start accepts. Automaton has 1223 states and 1673 transitions. Word has length 23 [2023-02-16 03:42:28,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:42:28,459 INFO L495 AbstractCegarLoop]: Abstraction has 1223 states and 1673 transitions. [2023-02-16 03:42:28,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.0) internal successors, (42), 15 states have internal predecessors, (42), 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) [2023-02-16 03:42:28,459 INFO L276 IsEmpty]: Start isEmpty. Operand 1223 states and 1673 transitions. [2023-02-16 03:42:28,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-02-16 03:42:28,460 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:42:28,460 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:42:28,477 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-02-16 03:42:28,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 03:42:28,675 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 202 more)] === [2023-02-16 03:42:28,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:42:28,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1830179145, now seen corresponding path program 2 times [2023-02-16 03:42:28,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:42:28,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1224687017] [2023-02-16 03:42:28,676 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-16 03:42:28,676 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 03:42:28,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:42:28,687 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-16 03:42:28,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-02-16 03:42:29,048 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-02-16 03:42:29,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 03:42:29,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-16 03:42:29,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:42:29,181 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-02-16 03:42:29,181 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 03:42:29,181 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:42:29,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1224687017] [2023-02-16 03:42:29,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1224687017] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:42:29,182 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:42:29,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-02-16 03:42:29,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472255884] [2023-02-16 03:42:29,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:42:29,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 03:42:29,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:42:29,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 03:42:29,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 03:42:29,183 INFO L87 Difference]: Start difference. First operand 1223 states and 1673 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-16 03:42:30,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:42:30,269 INFO L93 Difference]: Finished difference Result 1431 states and 1766 transitions. [2023-02-16 03:42:30,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 03:42:30,269 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2023-02-16 03:42:30,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:42:30,273 INFO L225 Difference]: With dead ends: 1431 [2023-02-16 03:42:30,273 INFO L226 Difference]: Without dead ends: 1431 [2023-02-16 03:42:30,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 03:42:30,274 INFO L413 NwaCegarLoop]: 740 mSDtfsCounter, 643 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 643 SdHoareTripleChecker+Valid, 1282 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-02-16 03:42:30,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [643 Valid, 1282 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-02-16 03:42:30,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1431 states. [2023-02-16 03:42:30,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1431 to 1221. [2023-02-16 03:42:30,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1221 states, 756 states have (on average 1.7142857142857142) internal successors, (1296), 978 states have internal predecessors, (1296), 184 states have call successors, (184), 79 states have call predecessors, (184), 79 states have return successors, (184), 176 states have call predecessors, (184), 184 states have call successors, (184) [2023-02-16 03:42:30,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1221 states to 1221 states and 1664 transitions. [2023-02-16 03:42:30,295 INFO L78 Accepts]: Start accepts. Automaton has 1221 states and 1664 transitions. Word has length 31 [2023-02-16 03:42:30,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:42:30,295 INFO L495 AbstractCegarLoop]: Abstraction has 1221 states and 1664 transitions. [2023-02-16 03:42:30,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-16 03:42:30,296 INFO L276 IsEmpty]: Start isEmpty. Operand 1221 states and 1664 transitions. [2023-02-16 03:42:30,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-02-16 03:42:30,296 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:42:30,296 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:42:30,309 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-02-16 03:42:30,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 03:42:30,514 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 202 more)] === [2023-02-16 03:42:30,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:42:30,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1830179146, now seen corresponding path program 1 times [2023-02-16 03:42:30,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:42:30,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [252083326] [2023-02-16 03:42:30,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:42:30,516 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 03:42:30,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:42:30,517 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-16 03:42:30,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-02-16 03:42:30,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:42:30,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-16 03:42:30,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:42:31,058 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:42:31,059 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:42:31,276 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:42:31,276 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:42:31,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [252083326] [2023-02-16 03:42:31,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [252083326] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 03:42:31,276 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 03:42:31,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-02-16 03:42:31,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632256143] [2023-02-16 03:42:31,277 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 03:42:31,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-02-16 03:42:31,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:42:31,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-02-16 03:42:31,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2023-02-16 03:42:31,278 INFO L87 Difference]: Start difference. First operand 1221 states and 1664 transitions. Second operand has 16 states, 16 states have (on average 3.0625) internal successors, (49), 16 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-16 03:42:32,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:42:32,053 INFO L93 Difference]: Finished difference Result 1221 states and 1660 transitions. [2023-02-16 03:42:32,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-16 03:42:32,054 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.0625) internal successors, (49), 16 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2023-02-16 03:42:32,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:42:32,057 INFO L225 Difference]: With dead ends: 1221 [2023-02-16 03:42:32,058 INFO L226 Difference]: Without dead ends: 1221 [2023-02-16 03:42:32,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2023-02-16 03:42:32,058 INFO L413 NwaCegarLoop]: 780 mSDtfsCounter, 3379 mSDsluCounter, 4789 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 235 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3411 SdHoareTripleChecker+Valid, 5569 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 235 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-02-16 03:42:32,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3411 Valid, 5569 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [235 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-02-16 03:42:32,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1221 states. [2023-02-16 03:42:32,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1221 to 1221. [2023-02-16 03:42:32,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1221 states, 756 states have (on average 1.708994708994709) internal successors, (1292), 978 states have internal predecessors, (1292), 184 states have call successors, (184), 79 states have call predecessors, (184), 79 states have return successors, (184), 176 states have call predecessors, (184), 184 states have call successors, (184) [2023-02-16 03:42:32,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1221 states to 1221 states and 1660 transitions. [2023-02-16 03:42:32,076 INFO L78 Accepts]: Start accepts. Automaton has 1221 states and 1660 transitions. Word has length 31 [2023-02-16 03:42:32,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:42:32,076 INFO L495 AbstractCegarLoop]: Abstraction has 1221 states and 1660 transitions. [2023-02-16 03:42:32,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.0625) internal successors, (49), 16 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-16 03:42:32,076 INFO L276 IsEmpty]: Start isEmpty. Operand 1221 states and 1660 transitions. [2023-02-16 03:42:32,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-02-16 03:42:32,077 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:42:32,077 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:42:32,099 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-02-16 03:42:32,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 03:42:32,293 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 202 more)] === [2023-02-16 03:42:32,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:42:32,294 INFO L85 PathProgramCache]: Analyzing trace with hash -738162529, now seen corresponding path program 3 times [2023-02-16 03:42:32,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:42:32,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1776004496] [2023-02-16 03:42:32,294 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-16 03:42:32,294 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 03:42:32,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:42:32,295 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-16 03:42:32,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-02-16 03:42:33,366 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-02-16 03:42:33,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 03:42:33,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 670 conjuncts, 16 conjunts are in the unsatisfiable core [2023-02-16 03:42:33,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:42:33,835 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 10 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:42:33,835 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:42:35,298 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:42:35,299 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:42:35,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1776004496] [2023-02-16 03:42:35,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1776004496] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 03:42:35,299 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 03:42:35,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 26 [2023-02-16 03:42:35,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888399857] [2023-02-16 03:42:35,299 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 03:42:35,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-02-16 03:42:35,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:42:35,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-02-16 03:42:35,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=458, Unknown=0, NotChecked=0, Total=650 [2023-02-16 03:42:35,301 INFO L87 Difference]: Start difference. First operand 1221 states and 1660 transitions. Second operand has 26 states, 26 states have (on average 3.0) internal successors, (78), 26 states have internal predecessors, (78), 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) [2023-02-16 03:42:37,317 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 03:42:39,323 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 03:42:41,327 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 03:42:43,335 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 03:42:45,342 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 03:42:47,346 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 03:42:49,351 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 03:42:51,355 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 03:42:53,361 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 03:42:55,369 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 03:42:57,375 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 03:42:59,379 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 03:43:01,388 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 03:43:03,391 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 03:43:05,398 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 03:43:07,402 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 03:43:09,411 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 03:43:11,417 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 03:43:28,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:43:28,401 INFO L93 Difference]: Finished difference Result 1570 states and 1888 transitions. [2023-02-16 03:43:28,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-02-16 03:43:28,402 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.0) internal successors, (78), 26 states have internal predecessors, (78), 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 41 [2023-02-16 03:43:28,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:43:28,405 INFO L225 Difference]: With dead ends: 1570 [2023-02-16 03:43:28,405 INFO L226 Difference]: Without dead ends: 1570 [2023-02-16 03:43:28,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=226, Invalid=530, Unknown=0, NotChecked=0, Total=756 [2023-02-16 03:43:28,406 INFO L413 NwaCegarLoop]: 741 mSDtfsCounter, 2399 mSDsluCounter, 8064 mSDsCounter, 0 mSdLazyCounter, 5461 mSolverCounterSat, 238 mSolverCounterUnsat, 18 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 50.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2411 SdHoareTripleChecker+Valid, 8805 SdHoareTripleChecker+Invalid, 5717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 238 IncrementalHoareTripleChecker+Valid, 5461 IncrementalHoareTripleChecker+Invalid, 18 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 52.5s IncrementalHoareTripleChecker+Time [2023-02-16 03:43:28,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2411 Valid, 8805 Invalid, 5717 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [238 Valid, 5461 Invalid, 18 Unknown, 0 Unchecked, 52.5s Time] [2023-02-16 03:43:28,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1570 states. [2023-02-16 03:43:28,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1570 to 1219. [2023-02-16 03:43:28,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1219 states, 755 states have (on average 1.7072847682119205) internal successors, (1289), 976 states have internal predecessors, (1289), 184 states have call successors, (184), 79 states have call predecessors, (184), 79 states have return successors, (184), 176 states have call predecessors, (184), 184 states have call successors, (184) [2023-02-16 03:43:28,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1219 states to 1219 states and 1657 transitions. [2023-02-16 03:43:28,423 INFO L78 Accepts]: Start accepts. Automaton has 1219 states and 1657 transitions. Word has length 41 [2023-02-16 03:43:28,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:43:28,423 INFO L495 AbstractCegarLoop]: Abstraction has 1219 states and 1657 transitions. [2023-02-16 03:43:28,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.0) internal successors, (78), 26 states have internal predecessors, (78), 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) [2023-02-16 03:43:28,424 INFO L276 IsEmpty]: Start isEmpty. Operand 1219 states and 1657 transitions. [2023-02-16 03:43:28,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-02-16 03:43:28,424 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:43:28,424 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:43:28,440 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-02-16 03:43:28,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 03:43:28,631 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 202 more)] === [2023-02-16 03:43:28,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:43:28,631 INFO L85 PathProgramCache]: Analyzing trace with hash -704629430, now seen corresponding path program 2 times [2023-02-16 03:43:28,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:43:28,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [280501717] [2023-02-16 03:43:28,632 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-16 03:43:28,632 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 03:43:28,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:43:28,633 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-16 03:43:28,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-02-16 03:43:28,939 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-02-16 03:43:28,939 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 03:43:28,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-16 03:43:28,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:43:29,176 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-02-16 03:43:29,176 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 03:43:29,176 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:43:29,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [280501717] [2023-02-16 03:43:29,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [280501717] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:43:29,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:43:29,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-16 03:43:29,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714242514] [2023-02-16 03:43:29,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:43:29,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-16 03:43:29,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:43:29,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-16 03:43:29,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-16 03:43:29,178 INFO L87 Difference]: Start difference. First operand 1219 states and 1657 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-16 03:43:31,195 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 03:43:32,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:43:32,754 INFO L93 Difference]: Finished difference Result 1275 states and 1669 transitions. [2023-02-16 03:43:32,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-16 03:43:32,754 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 43 [2023-02-16 03:43:32,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:43:32,758 INFO L225 Difference]: With dead ends: 1275 [2023-02-16 03:43:32,758 INFO L226 Difference]: Without dead ends: 1275 [2023-02-16 03:43:32,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-16 03:43:32,759 INFO L413 NwaCegarLoop]: 830 mSDtfsCounter, 234 mSDsluCounter, 1144 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 1974 SdHoareTripleChecker+Invalid, 574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-02-16 03:43:32,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 1974 Invalid, 574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 571 Invalid, 1 Unknown, 0 Unchecked, 3.5s Time] [2023-02-16 03:43:32,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1275 states. [2023-02-16 03:43:32,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1275 to 1217. [2023-02-16 03:43:32,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1217 states, 755 states have (on average 1.7046357615894039) internal successors, (1287), 974 states have internal predecessors, (1287), 184 states have call successors, (184), 79 states have call predecessors, (184), 79 states have return successors, (184), 176 states have call predecessors, (184), 184 states have call successors, (184) [2023-02-16 03:43:32,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 1655 transitions. [2023-02-16 03:43:32,777 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 1655 transitions. Word has length 43 [2023-02-16 03:43:32,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:43:32,778 INFO L495 AbstractCegarLoop]: Abstraction has 1217 states and 1655 transitions. [2023-02-16 03:43:32,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-16 03:43:32,778 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 1655 transitions. [2023-02-16 03:43:32,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-02-16 03:43:32,779 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:43:32,779 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:43:32,798 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-02-16 03:43:32,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 03:43:32,990 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 202 more)] === [2023-02-16 03:43:32,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:43:32,991 INFO L85 PathProgramCache]: Analyzing trace with hash 2020825701, now seen corresponding path program 1 times [2023-02-16 03:43:32,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:43:32,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1481604319] [2023-02-16 03:43:32,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:43:32,992 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 03:43:32,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:43:33,005 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-16 03:43:33,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-02-16 03:43:33,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:43:33,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 755 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-16 03:43:33,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:43:33,586 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-02-16 03:43:33,586 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 03:43:33,586 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:43:33,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1481604319] [2023-02-16 03:43:33,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1481604319] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:43:33,586 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:43:33,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-16 03:43:33,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823751174] [2023-02-16 03:43:33,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:43:33,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 03:43:33,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:43:33,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 03:43:33,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 03:43:33,587 INFO L87 Difference]: Start difference. First operand 1217 states and 1655 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-16 03:43:33,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:43:33,597 INFO L93 Difference]: Finished difference Result 1217 states and 1654 transitions. [2023-02-16 03:43:33,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 03:43:33,598 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 67 [2023-02-16 03:43:33,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:43:33,602 INFO L225 Difference]: With dead ends: 1217 [2023-02-16 03:43:33,602 INFO L226 Difference]: Without dead ends: 1217 [2023-02-16 03:43:33,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 03:43:33,602 INFO L413 NwaCegarLoop]: 785 mSDtfsCounter, 750 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 750 SdHoareTripleChecker+Valid, 785 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 03:43:33,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [750 Valid, 785 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 03:43:33,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1217 states. [2023-02-16 03:43:33,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1217 to 1217. [2023-02-16 03:43:33,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1217 states, 755 states have (on average 1.7033112582781458) internal successors, (1286), 974 states have internal predecessors, (1286), 184 states have call successors, (184), 79 states have call predecessors, (184), 79 states have return successors, (184), 176 states have call predecessors, (184), 184 states have call successors, (184) [2023-02-16 03:43:33,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 1654 transitions. [2023-02-16 03:43:33,620 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 1654 transitions. Word has length 67 [2023-02-16 03:43:33,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:43:33,620 INFO L495 AbstractCegarLoop]: Abstraction has 1217 states and 1654 transitions. [2023-02-16 03:43:33,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-16 03:43:33,620 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 1654 transitions. [2023-02-16 03:43:33,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-02-16 03:43:33,621 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:43:33,621 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:43:33,635 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-02-16 03:43:33,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 03:43:33,833 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 202 more)] === [2023-02-16 03:43:33,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:43:33,833 INFO L85 PathProgramCache]: Analyzing trace with hash 2020823779, now seen corresponding path program 1 times [2023-02-16 03:43:33,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:43:33,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [673787949] [2023-02-16 03:43:33,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:43:33,834 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 03:43:33,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:43:33,835 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-16 03:43:33,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-02-16 03:43:34,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:43:34,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 756 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-16 03:43:34,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:43:34,375 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-02-16 03:43:34,382 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-02-16 03:43:34,382 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 03:43:34,382 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:43:34,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [673787949] [2023-02-16 03:43:34,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [673787949] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:43:34,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:43:34,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-16 03:43:34,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985012568] [2023-02-16 03:43:34,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:43:34,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 03:43:34,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:43:34,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 03:43:34,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 03:43:34,384 INFO L87 Difference]: Start difference. First operand 1217 states and 1654 transitions. Second operand has 3 states, 2 states have (on average 16.0) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-16 03:43:36,403 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 03:43:37,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:43:37,008 INFO L93 Difference]: Finished difference Result 1216 states and 1653 transitions. [2023-02-16 03:43:37,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 03:43:37,013 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 16.0) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 67 [2023-02-16 03:43:37,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:43:37,016 INFO L225 Difference]: With dead ends: 1216 [2023-02-16 03:43:37,017 INFO L226 Difference]: Without dead ends: 1216 [2023-02-16 03:43:37,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 03:43:37,017 INFO L413 NwaCegarLoop]: 783 mSDtfsCounter, 2 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1355 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-02-16 03:43:37,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1355 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 212 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2023-02-16 03:43:37,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1216 states. [2023-02-16 03:43:37,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1216 to 1216. [2023-02-16 03:43:37,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1216 states, 755 states have (on average 1.7019867549668874) internal successors, (1285), 973 states have internal predecessors, (1285), 184 states have call successors, (184), 79 states have call predecessors, (184), 79 states have return successors, (184), 176 states have call predecessors, (184), 184 states have call successors, (184) [2023-02-16 03:43:37,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1216 states to 1216 states and 1653 transitions. [2023-02-16 03:43:37,036 INFO L78 Accepts]: Start accepts. Automaton has 1216 states and 1653 transitions. Word has length 67 [2023-02-16 03:43:37,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:43:37,037 INFO L495 AbstractCegarLoop]: Abstraction has 1216 states and 1653 transitions. [2023-02-16 03:43:37,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 16.0) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-16 03:43:37,037 INFO L276 IsEmpty]: Start isEmpty. Operand 1216 states and 1653 transitions. [2023-02-16 03:43:37,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-02-16 03:43:37,037 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:43:37,038 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:43:37,050 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-02-16 03:43:37,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 03:43:37,250 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 202 more)] === [2023-02-16 03:43:37,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:43:37,251 INFO L85 PathProgramCache]: Analyzing trace with hash 2020823780, now seen corresponding path program 1 times [2023-02-16 03:43:37,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:43:37,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [37026074] [2023-02-16 03:43:37,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:43:37,251 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 03:43:37,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:43:37,253 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-16 03:43:37,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-02-16 03:43:37,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:43:37,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 756 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-16 03:43:37,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:43:37,969 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-16 03:43:37,981 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-02-16 03:43:37,981 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 03:43:37,982 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:43:37,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [37026074] [2023-02-16 03:43:37,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [37026074] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:43:37,982 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:43:37,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-16 03:43:37,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485917484] [2023-02-16 03:43:37,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:43:37,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-16 03:43:37,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:43:37,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-16 03:43:37,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-16 03:43:37,983 INFO L87 Difference]: Start difference. First operand 1216 states and 1653 transitions. Second operand has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-16 03:43:40,000 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 03:43:40,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:43:40,817 INFO L93 Difference]: Finished difference Result 1215 states and 1652 transitions. [2023-02-16 03:43:40,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-16 03:43:40,818 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 67 [2023-02-16 03:43:40,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:43:40,821 INFO L225 Difference]: With dead ends: 1215 [2023-02-16 03:43:40,821 INFO L226 Difference]: Without dead ends: 1215 [2023-02-16 03:43:40,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-16 03:43:40,822 INFO L413 NwaCegarLoop]: 780 mSDtfsCounter, 747 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 747 SdHoareTripleChecker+Valid, 1356 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-02-16 03:43:40,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [747 Valid, 1356 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 210 Invalid, 1 Unknown, 0 Unchecked, 2.8s Time] [2023-02-16 03:43:40,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1215 states. [2023-02-16 03:43:40,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1215 to 1215. [2023-02-16 03:43:40,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1215 states, 755 states have (on average 1.7006622516556291) internal successors, (1284), 972 states have internal predecessors, (1284), 184 states have call successors, (184), 79 states have call predecessors, (184), 79 states have return successors, (184), 176 states have call predecessors, (184), 184 states have call successors, (184) [2023-02-16 03:43:40,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1215 states to 1215 states and 1652 transitions. [2023-02-16 03:43:40,837 INFO L78 Accepts]: Start accepts. Automaton has 1215 states and 1652 transitions. Word has length 67 [2023-02-16 03:43:40,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:43:40,837 INFO L495 AbstractCegarLoop]: Abstraction has 1215 states and 1652 transitions. [2023-02-16 03:43:40,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-16 03:43:40,838 INFO L276 IsEmpty]: Start isEmpty. Operand 1215 states and 1652 transitions. [2023-02-16 03:43:40,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-02-16 03:43:40,838 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:43:40,838 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:43:40,850 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-02-16 03:43:41,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 03:43:41,051 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr164ASSERT_VIOLATIONMEMORY_LEAK === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 202 more)] === [2023-02-16 03:43:41,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:43:41,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1355687384, now seen corresponding path program 1 times [2023-02-16 03:43:41,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:43:41,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1799933173] [2023-02-16 03:43:41,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:43:41,052 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 03:43:41,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:43:41,053 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-16 03:43:41,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-02-16 03:43:41,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:43:41,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 749 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-16 03:43:41,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:43:41,583 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2023-02-16 03:43:41,583 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 03:43:41,583 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:43:41,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1799933173] [2023-02-16 03:43:41,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1799933173] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:43:41,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:43:41,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-16 03:43:41,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973810515] [2023-02-16 03:43:41,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:43:41,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 03:43:41,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:43:41,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 03:43:41,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 03:43:41,584 INFO L87 Difference]: Start difference. First operand 1215 states and 1652 transitions. Second operand has 3 states, 2 states have (on average 17.5) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-02-16 03:43:43,602 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 03:43:44,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:43:44,207 INFO L93 Difference]: Finished difference Result 1256 states and 1661 transitions. [2023-02-16 03:43:44,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 03:43:44,207 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 17.5) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 74 [2023-02-16 03:43:44,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:43:44,211 INFO L225 Difference]: With dead ends: 1256 [2023-02-16 03:43:44,212 INFO L226 Difference]: Without dead ends: 1244 [2023-02-16 03:43:44,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 03:43:44,212 INFO L413 NwaCegarLoop]: 772 mSDtfsCounter, 93 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 1317 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-02-16 03:43:44,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 1317 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 258 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2023-02-16 03:43:44,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1244 states. [2023-02-16 03:43:44,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1244 to 1211. [2023-02-16 03:43:44,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1211 states, 753 states have (on average 1.701195219123506) internal successors, (1281), 970 states have internal predecessors, (1281), 183 states have call successors, (183), 79 states have call predecessors, (183), 78 states have return successors, (181), 174 states have call predecessors, (181), 181 states have call successors, (181) [2023-02-16 03:43:44,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1211 states to 1211 states and 1645 transitions. [2023-02-16 03:43:44,235 INFO L78 Accepts]: Start accepts. Automaton has 1211 states and 1645 transitions. Word has length 74 [2023-02-16 03:43:44,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:43:44,235 INFO L495 AbstractCegarLoop]: Abstraction has 1211 states and 1645 transitions. [2023-02-16 03:43:44,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 17.5) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-02-16 03:43:44,236 INFO L276 IsEmpty]: Start isEmpty. Operand 1211 states and 1645 transitions. [2023-02-16 03:43:44,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-02-16 03:43:44,236 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:43:44,236 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:43:44,250 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-02-16 03:43:44,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 03:43:44,445 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 202 more)] === [2023-02-16 03:43:44,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:43:44,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1244150361, now seen corresponding path program 1 times [2023-02-16 03:43:44,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:43:44,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1453040062] [2023-02-16 03:43:44,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:43:44,446 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 03:43:44,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:43:44,447 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-16 03:43:44,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-02-16 03:43:45,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:43:45,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 784 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-16 03:43:45,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:43:46,100 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-02-16 03:43:46,100 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-02-16 03:43:46,165 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 20 [2023-02-16 03:43:46,205 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2023-02-16 03:43:46,205 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:43:46,295 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:43:46,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1453040062] [2023-02-16 03:43:46,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1453040062] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 03:43:46,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [294580590] [2023-02-16 03:43:46,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:43:46,296 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-02-16 03:43:46,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-02-16 03:43:46,298 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-02-16 03:43:46,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2023-02-16 03:43:48,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:43:48,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 784 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-16 03:43:48,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:43:48,463 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-02-16 03:43:48,471 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2023-02-16 03:43:48,562 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 32 [2023-02-16 03:43:48,621 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2023-02-16 03:43:48,621 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:43:48,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [294580590] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 03:43:48,688 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 03:43:48,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2023-02-16 03:43:48,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121913873] [2023-02-16 03:43:48,689 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 03:43:48,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-16 03:43:48,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:43:48,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-16 03:43:48,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-02-16 03:43:48,690 INFO L87 Difference]: Start difference. First operand 1211 states and 1645 transitions. Second operand has 10 states, 9 states have (on average 8.0) internal successors, (72), 7 states have internal predecessors, (72), 4 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-02-16 03:43:50,708 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 03:43:52,714 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 03:43:54,718 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 03:43:56,725 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 03:43:59,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:43:59,623 INFO L93 Difference]: Finished difference Result 1742 states and 2280 transitions. [2023-02-16 03:43:59,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-16 03:43:59,624 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.0) internal successors, (72), 7 states have internal predecessors, (72), 4 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 76 [2023-02-16 03:43:59,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:43:59,629 INFO L225 Difference]: With dead ends: 1742 [2023-02-16 03:43:59,629 INFO L226 Difference]: Without dead ends: 1742 [2023-02-16 03:43:59,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 146 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2023-02-16 03:43:59,629 INFO L413 NwaCegarLoop]: 704 mSDtfsCounter, 750 mSDsluCounter, 3579 mSDsCounter, 0 mSdLazyCounter, 2480 mSolverCounterSat, 4 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 751 SdHoareTripleChecker+Valid, 4283 SdHoareTripleChecker+Invalid, 2488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2480 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2023-02-16 03:43:59,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [751 Valid, 4283 Invalid, 2488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2480 Invalid, 4 Unknown, 0 Unchecked, 10.8s Time] [2023-02-16 03:43:59,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1742 states. [2023-02-16 03:43:59,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1742 to 1519. [2023-02-16 03:43:59,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1519 states, 981 states have (on average 1.730886850152905) internal successors, (1698), 1210 states have internal predecessors, (1698), 241 states have call successors, (241), 101 states have call predecessors, (241), 100 states have return successors, (239), 225 states have call predecessors, (239), 239 states have call successors, (239) [2023-02-16 03:43:59,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1519 states to 1519 states and 2178 transitions. [2023-02-16 03:43:59,649 INFO L78 Accepts]: Start accepts. Automaton has 1519 states and 2178 transitions. Word has length 76 [2023-02-16 03:43:59,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:43:59,649 INFO L495 AbstractCegarLoop]: Abstraction has 1519 states and 2178 transitions. [2023-02-16 03:43:59,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.0) internal successors, (72), 7 states have internal predecessors, (72), 4 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-02-16 03:43:59,650 INFO L276 IsEmpty]: Start isEmpty. Operand 1519 states and 2178 transitions. [2023-02-16 03:43:59,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-02-16 03:43:59,650 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:43:59,650 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:43:59,667 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-02-16 03:43:59,881 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2023-02-16 03:44:00,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-02-16 03:44:00,079 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 202 more)] === [2023-02-16 03:44:00,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:44:00,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1244150360, now seen corresponding path program 1 times [2023-02-16 03:44:00,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:44:00,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1827521767] [2023-02-16 03:44:00,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:44:00,081 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 03:44:00,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:44:00,082 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-16 03:44:00,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-02-16 03:44:01,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:44:01,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 784 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-16 03:44:01,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:44:01,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:44:01,792 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-02-16 03:44:01,857 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-02-16 03:44:01,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:44:02,391 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:44:02,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1827521767] [2023-02-16 03:44:02,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1827521767] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 03:44:02,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1536024024] [2023-02-16 03:44:02,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:44:02,392 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-02-16 03:44:02,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-02-16 03:44:02,393 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-02-16 03:44:02,398 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2023-02-16 03:44:04,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:44:04,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 784 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-16 03:44:04,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:44:04,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:44:04,822 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-02-16 03:44:04,868 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-02-16 03:44:04,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:44:07,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1536024024] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 03:44:07,111 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 03:44:07,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2023-02-16 03:44:07,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612883976] [2023-02-16 03:44:07,111 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 03:44:07,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-16 03:44:07,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:44:07,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-16 03:44:07,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-02-16 03:44:07,112 INFO L87 Difference]: Start difference. First operand 1519 states and 2178 transitions. Second operand has 6 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-02-16 03:44:09,135 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 03:44:11,139 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 03:44:14,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:44:14,396 INFO L93 Difference]: Finished difference Result 1942 states and 2503 transitions. [2023-02-16 03:44:14,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-16 03:44:14,397 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 76 [2023-02-16 03:44:14,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:44:14,402 INFO L225 Difference]: With dead ends: 1942 [2023-02-16 03:44:14,402 INFO L226 Difference]: Without dead ends: 1942 [2023-02-16 03:44:14,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 171 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2023-02-16 03:44:14,403 INFO L413 NwaCegarLoop]: 620 mSDtfsCounter, 967 mSDsluCounter, 1676 mSDsCounter, 0 mSdLazyCounter, 1905 mSolverCounterSat, 7 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 967 SdHoareTripleChecker+Valid, 2296 SdHoareTripleChecker+Invalid, 1914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1905 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2023-02-16 03:44:14,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [967 Valid, 2296 Invalid, 1914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1905 Invalid, 2 Unknown, 0 Unchecked, 7.2s Time] [2023-02-16 03:44:14,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1942 states. [2023-02-16 03:44:14,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1942 to 1696. [2023-02-16 03:44:14,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1696 states, 1116 states have (on average 1.739247311827957) internal successors, (1941), 1341 states have internal predecessors, (1941), 268 states have call successors, (268), 116 states have call predecessors, (268), 115 states have return successors, (266), 257 states have call predecessors, (266), 266 states have call successors, (266) [2023-02-16 03:44:14,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1696 states to 1696 states and 2475 transitions. [2023-02-16 03:44:14,428 INFO L78 Accepts]: Start accepts. Automaton has 1696 states and 2475 transitions. Word has length 76 [2023-02-16 03:44:14,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:44:14,428 INFO L495 AbstractCegarLoop]: Abstraction has 1696 states and 2475 transitions. [2023-02-16 03:44:14,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-02-16 03:44:14,428 INFO L276 IsEmpty]: Start isEmpty. Operand 1696 states and 2475 transitions. [2023-02-16 03:44:14,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-02-16 03:44:14,429 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:44:14,429 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:44:14,447 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (20)] Ended with exit code 0 [2023-02-16 03:44:14,656 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-02-16 03:44:14,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 03:44:14,853 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr114REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 202 more)] === [2023-02-16 03:44:14,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:44:14,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1356949500, now seen corresponding path program 1 times [2023-02-16 03:44:14,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:44:14,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [295828568] [2023-02-16 03:44:14,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:44:14,854 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 03:44:14,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:44:14,855 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-16 03:44:14,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-02-16 03:44:15,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:44:15,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 760 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-16 03:44:15,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:44:15,381 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2023-02-16 03:44:15,381 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 03:44:15,381 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:44:15,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [295828568] [2023-02-16 03:44:15,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [295828568] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:44:15,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:44:15,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-16 03:44:15,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962202239] [2023-02-16 03:44:15,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:44:15,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-16 03:44:15,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:44:15,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-16 03:44:15,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-16 03:44:15,382 INFO L87 Difference]: Start difference. First operand 1696 states and 2475 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-02-16 03:44:15,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:44:15,415 INFO L93 Difference]: Finished difference Result 1336 states and 1884 transitions. [2023-02-16 03:44:15,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-16 03:44:15,416 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 81 [2023-02-16 03:44:15,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:44:15,419 INFO L225 Difference]: With dead ends: 1336 [2023-02-16 03:44:15,419 INFO L226 Difference]: Without dead ends: 1331 [2023-02-16 03:44:15,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-02-16 03:44:15,420 INFO L413 NwaCegarLoop]: 785 mSDtfsCounter, 3 mSDsluCounter, 2343 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 3128 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 03:44:15,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 3128 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 03:44:15,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1331 states. [2023-02-16 03:44:15,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1331 to 1331. [2023-02-16 03:44:15,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1331 states, 857 states have (on average 1.7432905484247374) internal successors, (1494), 1069 states have internal predecessors, (1494), 192 states have call successors, (192), 85 states have call predecessors, (192), 85 states have return successors, (192), 189 states have call predecessors, (192), 192 states have call successors, (192) [2023-02-16 03:44:15,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1331 states to 1331 states and 1878 transitions. [2023-02-16 03:44:15,438 INFO L78 Accepts]: Start accepts. Automaton has 1331 states and 1878 transitions. Word has length 81 [2023-02-16 03:44:15,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:44:15,438 INFO L495 AbstractCegarLoop]: Abstraction has 1331 states and 1878 transitions. [2023-02-16 03:44:15,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-02-16 03:44:15,439 INFO L276 IsEmpty]: Start isEmpty. Operand 1331 states and 1878 transitions. [2023-02-16 03:44:15,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-02-16 03:44:15,439 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:44:15,439 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:44:15,453 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2023-02-16 03:44:15,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 03:44:15,640 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 202 more)] === [2023-02-16 03:44:15,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:44:15,640 INFO L85 PathProgramCache]: Analyzing trace with hash 986823980, now seen corresponding path program 1 times [2023-02-16 03:44:15,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:44:15,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1088639915] [2023-02-16 03:44:15,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:44:15,641 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 03:44:15,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:44:15,642 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-16 03:44:15,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-02-16 03:44:16,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:44:16,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 840 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-16 03:44:16,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:44:17,079 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-02-16 03:44:17,080 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-02-16 03:44:17,128 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 20 [2023-02-16 03:44:17,165 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2023-02-16 03:44:17,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:44:17,223 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:44:17,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1088639915] [2023-02-16 03:44:17,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1088639915] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 03:44:17,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [678551399] [2023-02-16 03:44:17,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:44:17,223 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-02-16 03:44:17,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-02-16 03:44:17,224 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-02-16 03:44:17,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2023-02-16 03:44:19,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:44:19,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 840 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-16 03:44:19,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:44:19,489 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-02-16 03:44:19,490 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2023-02-16 03:44:19,568 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 32 [2023-02-16 03:44:19,656 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2023-02-16 03:44:19,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:44:19,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [678551399] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 03:44:19,709 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 03:44:19,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2023-02-16 03:44:19,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106073984] [2023-02-16 03:44:19,710 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 03:44:19,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-16 03:44:19,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:44:19,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-16 03:44:19,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-02-16 03:44:19,711 INFO L87 Difference]: Start difference. First operand 1331 states and 1878 transitions. Second operand has 10 states, 9 states have (on average 8.0) internal successors, (72), 7 states have internal predecessors, (72), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2023-02-16 03:44:21,730 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 03:44:23,737 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 03:44:25,740 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 03:44:27,746 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 03:44:29,749 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 03:44:31,757 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 03:44:35,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:44:35,172 INFO L93 Difference]: Finished difference Result 1506 states and 1890 transitions. [2023-02-16 03:44:35,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-16 03:44:35,172 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.0) internal successors, (72), 7 states have internal predecessors, (72), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 82 [2023-02-16 03:44:35,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:44:35,176 INFO L225 Difference]: With dead ends: 1506 [2023-02-16 03:44:35,176 INFO L226 Difference]: Without dead ends: 1506 [2023-02-16 03:44:35,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 172 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2023-02-16 03:44:35,192 INFO L413 NwaCegarLoop]: 700 mSDtfsCounter, 735 mSDsluCounter, 3860 mSDsCounter, 0 mSdLazyCounter, 2795 mSolverCounterSat, 4 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 736 SdHoareTripleChecker+Valid, 4560 SdHoareTripleChecker+Invalid, 2805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2795 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.4s IncrementalHoareTripleChecker+Time [2023-02-16 03:44:35,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [736 Valid, 4560 Invalid, 2805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2795 Invalid, 6 Unknown, 0 Unchecked, 15.4s Time] [2023-02-16 03:44:35,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1506 states. [2023-02-16 03:44:35,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1506 to 1329. [2023-02-16 03:44:35,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1329 states, 857 states have (on average 1.7409568261376895) internal successors, (1492), 1067 states have internal predecessors, (1492), 192 states have call successors, (192), 85 states have call predecessors, (192), 85 states have return successors, (192), 189 states have call predecessors, (192), 192 states have call successors, (192) [2023-02-16 03:44:35,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1329 states to 1329 states and 1876 transitions. [2023-02-16 03:44:35,219 INFO L78 Accepts]: Start accepts. Automaton has 1329 states and 1876 transitions. Word has length 82 [2023-02-16 03:44:35,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:44:35,219 INFO L495 AbstractCegarLoop]: Abstraction has 1329 states and 1876 transitions. [2023-02-16 03:44:35,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.0) internal successors, (72), 7 states have internal predecessors, (72), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2023-02-16 03:44:35,219 INFO L276 IsEmpty]: Start isEmpty. Operand 1329 states and 1876 transitions. [2023-02-16 03:44:35,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-02-16 03:44:35,220 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:44:35,220 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:44:35,233 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2023-02-16 03:44:35,444 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-02-16 03:44:35,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 03:44:35,631 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 202 more)] === [2023-02-16 03:44:35,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:44:35,632 INFO L85 PathProgramCache]: Analyzing trace with hash 986823981, now seen corresponding path program 1 times [2023-02-16 03:44:35,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:44:35,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [331225491] [2023-02-16 03:44:35,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:44:35,633 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 03:44:35,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:44:35,633 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-16 03:44:35,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-02-16 03:44:36,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:44:37,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 840 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-16 03:44:37,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:44:37,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:44:37,443 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-02-16 03:44:37,534 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-02-16 03:44:37,535 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:44:40,101 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:44:40,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [331225491] [2023-02-16 03:44:40,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [331225491] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 03:44:40,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [481384001] [2023-02-16 03:44:40,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:44:40,101 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-02-16 03:44:40,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-02-16 03:44:40,102 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-02-16 03:44:40,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2023-02-16 03:44:42,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:44:42,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 840 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-16 03:44:42,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:44:42,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:44:42,925 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-02-16 03:44:43,023 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-02-16 03:44:43,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:44:43,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [481384001] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 03:44:43,271 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 03:44:43,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2023-02-16 03:44:43,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377722693] [2023-02-16 03:44:43,271 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 03:44:43,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-16 03:44:43,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:44:43,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-16 03:44:43,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=66, Unknown=1, NotChecked=0, Total=90 [2023-02-16 03:44:43,272 INFO L87 Difference]: Start difference. First operand 1329 states and 1876 transitions. Second operand has 6 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-02-16 03:44:45,292 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 03:44:47,301 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 03:44:50,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:44:50,562 INFO L93 Difference]: Finished difference Result 1573 states and 1902 transitions. [2023-02-16 03:44:50,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-16 03:44:50,562 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 82 [2023-02-16 03:44:50,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:44:50,566 INFO L225 Difference]: With dead ends: 1573 [2023-02-16 03:44:50,566 INFO L226 Difference]: Without dead ends: 1573 [2023-02-16 03:44:50,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 195 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=50, Invalid=105, Unknown=1, NotChecked=0, Total=156 [2023-02-16 03:44:50,567 INFO L413 NwaCegarLoop]: 616 mSDtfsCounter, 1480 mSDsluCounter, 1385 mSDsCounter, 0 mSdLazyCounter, 1681 mSolverCounterSat, 135 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1481 SdHoareTripleChecker+Valid, 2001 SdHoareTripleChecker+Invalid, 1818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 1681 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2023-02-16 03:44:50,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1481 Valid, 2001 Invalid, 1818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 1681 Invalid, 2 Unknown, 0 Unchecked, 7.2s Time] [2023-02-16 03:44:50,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1573 states. [2023-02-16 03:44:50,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1573 to 1327. [2023-02-16 03:44:50,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1327 states, 857 states have (on average 1.7386231038506417) internal successors, (1490), 1065 states have internal predecessors, (1490), 192 states have call successors, (192), 85 states have call predecessors, (192), 85 states have return successors, (192), 189 states have call predecessors, (192), 192 states have call successors, (192) [2023-02-16 03:44:50,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1327 states to 1327 states and 1874 transitions. [2023-02-16 03:44:50,583 INFO L78 Accepts]: Start accepts. Automaton has 1327 states and 1874 transitions. Word has length 82 [2023-02-16 03:44:50,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:44:50,584 INFO L495 AbstractCegarLoop]: Abstraction has 1327 states and 1874 transitions. [2023-02-16 03:44:50,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-02-16 03:44:50,584 INFO L276 IsEmpty]: Start isEmpty. Operand 1327 states and 1874 transitions. [2023-02-16 03:44:50,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-02-16 03:44:50,584 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:44:50,585 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:44:50,603 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2023-02-16 03:44:50,810 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (25)] Ended with exit code 0 [2023-02-16 03:44:50,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-02-16 03:44:50,998 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 202 more)] === [2023-02-16 03:44:50,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:44:50,998 INFO L85 PathProgramCache]: Analyzing trace with hash -3613151, now seen corresponding path program 1 times [2023-02-16 03:44:50,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:44:50,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1851119109] [2023-02-16 03:44:50,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:44:50,999 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 03:44:50,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:44:51,000 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-16 03:44:51,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-02-16 03:44:52,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:44:53,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 893 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-16 03:44:53,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:44:53,244 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-02-16 03:44:53,244 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-02-16 03:44:53,281 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 20 [2023-02-16 03:44:53,334 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2023-02-16 03:44:53,334 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 03:44:53,335 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:44:53,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1851119109] [2023-02-16 03:44:53,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1851119109] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:44:53,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:44:53,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-16 03:44:53,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308634862] [2023-02-16 03:44:53,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:44:53,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-16 03:44:53,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:44:53,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-16 03:44:53,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-16 03:44:53,336 INFO L87 Difference]: Start difference. First operand 1327 states and 1874 transitions. Second operand has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-02-16 03:44:55,356 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 03:44:56,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:44:56,847 INFO L93 Difference]: Finished difference Result 1502 states and 1886 transitions. [2023-02-16 03:44:56,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-16 03:44:56,848 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 88 [2023-02-16 03:44:56,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:44:56,857 INFO L225 Difference]: With dead ends: 1502 [2023-02-16 03:44:56,857 INFO L226 Difference]: Without dead ends: 1502 [2023-02-16 03:44:56,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-16 03:44:56,858 INFO L413 NwaCegarLoop]: 698 mSDtfsCounter, 717 mSDsluCounter, 989 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 717 SdHoareTripleChecker+Valid, 1687 SdHoareTripleChecker+Invalid, 759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 754 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-02-16 03:44:56,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [717 Valid, 1687 Invalid, 759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 754 Invalid, 1 Unknown, 0 Unchecked, 3.5s Time] [2023-02-16 03:44:56,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1502 states. [2023-02-16 03:44:56,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1502 to 1325. [2023-02-16 03:44:56,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1325 states, 857 states have (on average 1.736289381563594) internal successors, (1488), 1063 states have internal predecessors, (1488), 192 states have call successors, (192), 85 states have call predecessors, (192), 85 states have return successors, (192), 189 states have call predecessors, (192), 192 states have call successors, (192) [2023-02-16 03:44:56,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1325 states to 1325 states and 1872 transitions. [2023-02-16 03:44:56,873 INFO L78 Accepts]: Start accepts. Automaton has 1325 states and 1872 transitions. Word has length 88 [2023-02-16 03:44:56,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:44:56,873 INFO L495 AbstractCegarLoop]: Abstraction has 1325 states and 1872 transitions. [2023-02-16 03:44:56,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-02-16 03:44:56,874 INFO L276 IsEmpty]: Start isEmpty. Operand 1325 states and 1872 transitions. [2023-02-16 03:44:56,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-02-16 03:44:56,874 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:44:56,874 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:44:56,904 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2023-02-16 03:44:57,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 03:44:57,090 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 202 more)] === [2023-02-16 03:44:57,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:44:57,091 INFO L85 PathProgramCache]: Analyzing trace with hash -3613150, now seen corresponding path program 1 times [2023-02-16 03:44:57,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:44:57,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2111599599] [2023-02-16 03:44:57,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:44:57,092 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 03:44:57,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:44:57,093 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-16 03:44:57,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-02-16 03:44:58,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:44:59,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 893 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-16 03:44:59,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:44:59,510 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-02-16 03:44:59,510 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2023-02-16 03:44:59,679 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2023-02-16 03:44:59,679 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 03:44:59,679 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:44:59,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2111599599] [2023-02-16 03:44:59,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2111599599] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:44:59,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:44:59,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-16 03:44:59,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055260277] [2023-02-16 03:44:59,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:44:59,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-16 03:44:59,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:44:59,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-16 03:44:59,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-16 03:44:59,681 INFO L87 Difference]: Start difference. First operand 1325 states and 1872 transitions. Second operand has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-02-16 03:45:01,704 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 03:45:03,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:45:03,057 INFO L93 Difference]: Finished difference Result 1376 states and 1879 transitions. [2023-02-16 03:45:03,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-16 03:45:03,058 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 88 [2023-02-16 03:45:03,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:45:03,061 INFO L225 Difference]: With dead ends: 1376 [2023-02-16 03:45:03,061 INFO L226 Difference]: Without dead ends: 1376 [2023-02-16 03:45:03,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-16 03:45:03,061 INFO L413 NwaCegarLoop]: 763 mSDtfsCounter, 123 mSDsluCounter, 1085 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 1848 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-02-16 03:45:03,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 1848 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 516 Invalid, 1 Unknown, 0 Unchecked, 3.3s Time] [2023-02-16 03:45:03,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1376 states. [2023-02-16 03:45:03,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1376 to 1323. [2023-02-16 03:45:03,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1323 states, 857 states have (on average 1.7327887981330221) internal successors, (1485), 1061 states have internal predecessors, (1485), 192 states have call successors, (192), 85 states have call predecessors, (192), 85 states have return successors, (192), 189 states have call predecessors, (192), 192 states have call successors, (192) [2023-02-16 03:45:03,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1323 states to 1323 states and 1869 transitions. [2023-02-16 03:45:03,077 INFO L78 Accepts]: Start accepts. Automaton has 1323 states and 1869 transitions. Word has length 88 [2023-02-16 03:45:03,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:45:03,077 INFO L495 AbstractCegarLoop]: Abstraction has 1323 states and 1869 transitions. [2023-02-16 03:45:03,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-02-16 03:45:03,077 INFO L276 IsEmpty]: Start isEmpty. Operand 1323 states and 1869 transitions. [2023-02-16 03:45:03,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-02-16 03:45:03,078 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:45:03,078 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:45:03,099 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2023-02-16 03:45:03,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 03:45:03,295 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 202 more)] === [2023-02-16 03:45:03,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:45:03,295 INFO L85 PathProgramCache]: Analyzing trace with hash -112007323, now seen corresponding path program 1 times [2023-02-16 03:45:03,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:45:03,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1351782907] [2023-02-16 03:45:03,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:45:03,296 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 03:45:03,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:45:03,297 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-16 03:45:03,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2023-02-16 03:45:05,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:45:05,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 906 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-16 03:45:05,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:45:05,352 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-02-16 03:45:05,352 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-02-16 03:45:05,400 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 20 [2023-02-16 03:45:05,465 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2023-02-16 03:45:05,465 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 03:45:05,465 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:45:05,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1351782907] [2023-02-16 03:45:05,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1351782907] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:45:05,465 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:45:05,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 03:45:05,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666071333] [2023-02-16 03:45:05,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:45:05,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-16 03:45:05,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:45:05,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-16 03:45:05,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-16 03:45:05,466 INFO L87 Difference]: Start difference. First operand 1323 states and 1869 transitions. Second operand has 5 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-02-16 03:45:07,484 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 03:45:09,490 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 03:45:11,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:45:11,389 INFO L93 Difference]: Finished difference Result 1498 states and 1881 transitions. [2023-02-16 03:45:11,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-16 03:45:11,390 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 89 [2023-02-16 03:45:11,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:45:11,392 INFO L225 Difference]: With dead ends: 1498 [2023-02-16 03:45:11,392 INFO L226 Difference]: Without dead ends: 1498 [2023-02-16 03:45:11,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-02-16 03:45:11,393 INFO L413 NwaCegarLoop]: 668 mSDtfsCounter, 1076 mSDsluCounter, 1341 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 58 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1076 SdHoareTripleChecker+Valid, 2009 SdHoareTripleChecker+Invalid, 1141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2023-02-16 03:45:11,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1076 Valid, 2009 Invalid, 1141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 1081 Invalid, 2 Unknown, 0 Unchecked, 5.9s Time] [2023-02-16 03:45:11,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1498 states. [2023-02-16 03:45:11,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1498 to 1321. [2023-02-16 03:45:11,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1321 states, 857 states have (on average 1.7304550758459742) internal successors, (1483), 1059 states have internal predecessors, (1483), 192 states have call successors, (192), 85 states have call predecessors, (192), 85 states have return successors, (192), 189 states have call predecessors, (192), 192 states have call successors, (192) [2023-02-16 03:45:11,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1321 states to 1321 states and 1867 transitions. [2023-02-16 03:45:11,408 INFO L78 Accepts]: Start accepts. Automaton has 1321 states and 1867 transitions. Word has length 89 [2023-02-16 03:45:11,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:45:11,408 INFO L495 AbstractCegarLoop]: Abstraction has 1321 states and 1867 transitions. [2023-02-16 03:45:11,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-02-16 03:45:11,408 INFO L276 IsEmpty]: Start isEmpty. Operand 1321 states and 1867 transitions. [2023-02-16 03:45:11,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-02-16 03:45:11,409 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:45:11,409 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:45:11,441 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Ended with exit code 0 [2023-02-16 03:45:11,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 03:45:11,641 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 202 more)] === [2023-02-16 03:45:11,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:45:11,641 INFO L85 PathProgramCache]: Analyzing trace with hash -112007322, now seen corresponding path program 1 times [2023-02-16 03:45:11,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:45:11,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [570011150] [2023-02-16 03:45:11,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:45:11,642 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 03:45:11,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:45:11,643 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-16 03:45:11,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2023-02-16 03:45:13,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:45:13,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 906 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-16 03:45:13,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:45:13,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:45:13,920 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-02-16 03:45:14,058 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2023-02-16 03:45:14,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:45:16,367 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:45:16,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [570011150] [2023-02-16 03:45:16,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [570011150] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 03:45:16,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1143112672] [2023-02-16 03:45:16,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:45:16,367 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-02-16 03:45:16,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-02-16 03:45:16,368 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-02-16 03:45:16,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (30)] Waiting until timeout for monitored process [2023-02-16 03:45:18,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:45:18,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 906 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-16 03:45:18,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:45:19,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:45:19,121 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-02-16 03:45:19,236 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2023-02-16 03:45:19,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:45:21,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1143112672] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 03:45:21,648 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 03:45:21,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2023-02-16 03:45:21,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297327416] [2023-02-16 03:45:21,648 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 03:45:21,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-16 03:45:21,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:45:21,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-16 03:45:21,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=37, Unknown=1, NotChecked=0, Total=56 [2023-02-16 03:45:21,649 INFO L87 Difference]: Start difference. First operand 1321 states and 1867 transitions. Second operand has 5 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-02-16 03:45:23,667 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 03:45:26,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:45:26,447 INFO L93 Difference]: Finished difference Result 1565 states and 1893 transitions. [2023-02-16 03:45:26,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-16 03:45:26,447 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 89 [2023-02-16 03:45:26,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:45:26,450 INFO L225 Difference]: With dead ends: 1565 [2023-02-16 03:45:26,450 INFO L226 Difference]: Without dead ends: 1565 [2023-02-16 03:45:26,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 225 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=33, Invalid=56, Unknown=1, NotChecked=0, Total=90 [2023-02-16 03:45:26,450 INFO L413 NwaCegarLoop]: 579 mSDtfsCounter, 1368 mSDsluCounter, 1286 mSDsCounter, 0 mSdLazyCounter, 1251 mSolverCounterSat, 78 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1368 SdHoareTripleChecker+Valid, 1865 SdHoareTripleChecker+Invalid, 1330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1251 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-02-16 03:45:26,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1368 Valid, 1865 Invalid, 1330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1251 Invalid, 1 Unknown, 0 Unchecked, 4.7s Time] [2023-02-16 03:45:26,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1565 states. [2023-02-16 03:45:26,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1565 to 1319. [2023-02-16 03:45:26,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1319 states, 857 states have (on average 1.7281213535589266) internal successors, (1481), 1057 states have internal predecessors, (1481), 192 states have call successors, (192), 85 states have call predecessors, (192), 85 states have return successors, (192), 189 states have call predecessors, (192), 192 states have call successors, (192) [2023-02-16 03:45:26,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 1865 transitions. [2023-02-16 03:45:26,465 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 1865 transitions. Word has length 89 [2023-02-16 03:45:26,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:45:26,465 INFO L495 AbstractCegarLoop]: Abstraction has 1319 states and 1865 transitions. [2023-02-16 03:45:26,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-02-16 03:45:26,465 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 1865 transitions. [2023-02-16 03:45:26,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-02-16 03:45:26,466 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:45:26,466 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:45:26,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2023-02-16 03:45:26,704 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (30)] Forceful destruction successful, exit code 0 [2023-02-16 03:45:26,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2023-02-16 03:45:26,895 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting cdev_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 202 more)] === [2023-02-16 03:45:26,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:45:26,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1939903835, now seen corresponding path program 1 times [2023-02-16 03:45:26,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:45:26,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1149487706] [2023-02-16 03:45:26,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:45:26,896 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 03:45:26,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:45:26,897 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-16 03:45:26,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2023-02-16 03:45:27,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:45:27,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 948 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-16 03:45:27,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:45:27,712 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2023-02-16 03:45:27,712 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 03:45:27,713 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:45:27,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1149487706] [2023-02-16 03:45:27,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1149487706] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:45:27,713 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:45:27,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-16 03:45:27,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000257428] [2023-02-16 03:45:27,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:45:27,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-16 03:45:27,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:45:27,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-16 03:45:27,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-16 03:45:27,714 INFO L87 Difference]: Start difference. First operand 1319 states and 1865 transitions. Second operand has 5 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-02-16 03:45:29,734 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 03:45:31,737 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 03:45:33,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:45:33,411 INFO L93 Difference]: Finished difference Result 1494 states and 1877 transitions. [2023-02-16 03:45:33,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-16 03:45:33,411 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 96 [2023-02-16 03:45:33,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:45:33,413 INFO L225 Difference]: With dead ends: 1494 [2023-02-16 03:45:33,413 INFO L226 Difference]: Without dead ends: 1494 [2023-02-16 03:45:33,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-02-16 03:45:33,414 INFO L413 NwaCegarLoop]: 692 mSDtfsCounter, 789 mSDsluCounter, 1496 mSDsCounter, 0 mSdLazyCounter, 1094 mSolverCounterSat, 9 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 790 SdHoareTripleChecker+Valid, 2188 SdHoareTripleChecker+Invalid, 1105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1094 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-02-16 03:45:33,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [790 Valid, 2188 Invalid, 1105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1094 Invalid, 2 Unknown, 0 Unchecked, 5.6s Time] [2023-02-16 03:45:33,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1494 states. [2023-02-16 03:45:33,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1494 to 1317. [2023-02-16 03:45:33,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1317 states, 857 states have (on average 1.7257876312718787) internal successors, (1479), 1055 states have internal predecessors, (1479), 192 states have call successors, (192), 85 states have call predecessors, (192), 85 states have return successors, (192), 189 states have call predecessors, (192), 192 states have call successors, (192) [2023-02-16 03:45:33,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1317 states to 1317 states and 1863 transitions. [2023-02-16 03:45:33,426 INFO L78 Accepts]: Start accepts. Automaton has 1317 states and 1863 transitions. Word has length 96 [2023-02-16 03:45:33,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:45:33,426 INFO L495 AbstractCegarLoop]: Abstraction has 1317 states and 1863 transitions. [2023-02-16 03:45:33,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-02-16 03:45:33,426 INFO L276 IsEmpty]: Start isEmpty. Operand 1317 states and 1863 transitions. [2023-02-16 03:45:33,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-02-16 03:45:33,427 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:45:33,427 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:45:33,440 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2023-02-16 03:45:33,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 03:45:33,627 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting cdev_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 202 more)] === [2023-02-16 03:45:33,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:45:33,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1939903834, now seen corresponding path program 1 times [2023-02-16 03:45:33,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 03:45:33,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1090928819] [2023-02-16 03:45:33,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:45:33,628 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 03:45:33,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 03:45:33,629 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-16 03:45:33,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2023-02-16 03:45:35,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:45:35,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 948 conjuncts, 13 conjunts are in the unsatisfiable core [2023-02-16 03:45:35,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:45:36,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:45:36,226 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-02-16 03:45:36,460 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2023-02-16 03:45:36,460 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:45:37,040 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 03:45:37,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1090928819] [2023-02-16 03:45:37,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1090928819] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 03:45:37,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [745896684] [2023-02-16 03:45:37,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:45:37,041 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-02-16 03:45:37,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-02-16 03:45:37,042 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-02-16 03:45:37,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (33)] Waiting until timeout for monitored process [2023-02-16 03:45:39,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:45:39,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 948 conjuncts, 14 conjunts are in the unsatisfiable core [2023-02-16 03:45:39,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:45:40,483 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-02-16 03:45:40,484 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2023-02-16 03:45:40,614 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-16 03:45:40,986 INFO L321 Elim1Store]: treesize reduction 17, result has 19.0 percent of original size [2023-02-16 03:45:40,987 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 23 [2023-02-16 03:45:41,024 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2023-02-16 03:45:41,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:45:41,429 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 10 [2023-02-16 03:45:42,195 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2023-02-16 03:45:42,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [745896684] provided 1 perfect and 1 imperfect interpolant sequences [2023-02-16 03:45:42,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-02-16 03:45:42,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [5, 8] total 17 [2023-02-16 03:45:42,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914259894] [2023-02-16 03:45:42,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:45:42,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-16 03:45:42,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 03:45:42,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-16 03:45:42,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2023-02-16 03:45:42,197 INFO L87 Difference]: Start difference. First operand 1317 states and 1863 transitions. Second operand has 9 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 5 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-02-16 03:45:44,216 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-16 03:45:46,229 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []