./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inb.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 3dbbec33 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_inb.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 923bc1d588e1fd31be856d665fc28cbbbed3a9b002263483bc91775fdffd6378 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3dbbec3 [2023-02-14 13:48:43,699 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-14 13:48:43,701 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-14 13:48:43,732 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-14 13:48:43,732 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-14 13:48:43,734 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-14 13:48:43,736 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-14 13:48:43,744 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-14 13:48:43,746 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-14 13:48:43,749 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-14 13:48:43,750 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-14 13:48:43,751 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-14 13:48:43,752 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-14 13:48:43,753 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-14 13:48:43,754 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-14 13:48:43,755 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-14 13:48:43,755 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-14 13:48:43,756 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-14 13:48:43,757 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-14 13:48:43,760 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-14 13:48:43,761 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-14 13:48:43,762 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-14 13:48:43,763 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-14 13:48:43,763 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-14 13:48:43,776 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-14 13:48:43,777 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-14 13:48:43,777 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-14 13:48:43,778 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-14 13:48:43,778 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-14 13:48:43,779 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-14 13:48:43,779 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-14 13:48:43,779 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-14 13:48:43,780 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-14 13:48:43,781 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-14 13:48:43,781 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-14 13:48:43,781 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-14 13:48:43,782 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-14 13:48:43,782 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-14 13:48:43,782 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-14 13:48:43,783 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-14 13:48:43,784 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-14 13:48:43,785 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-02-14 13:48:43,807 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-14 13:48:43,807 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-14 13:48:43,808 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-14 13:48:43,808 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-14 13:48:43,808 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-14 13:48:43,808 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-14 13:48:43,809 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-14 13:48:43,809 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-14 13:48:43,809 INFO L138 SettingsManager]: * Use SBE=true [2023-02-14 13:48:43,809 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-14 13:48:43,810 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-14 13:48:43,810 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-14 13:48:43,810 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-14 13:48:43,810 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-14 13:48:43,810 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-14 13:48:43,810 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-14 13:48:43,811 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-14 13:48:43,811 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-14 13:48:43,811 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-14 13:48:43,811 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-14 13:48:43,811 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-14 13:48:43,811 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-14 13:48:43,811 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-14 13:48:43,812 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-14 13:48:43,812 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-14 13:48:43,812 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 13:48:43,812 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-14 13:48:43,812 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-14 13:48:43,812 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-14 13:48:43,813 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-14 13:48:43,813 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-14 13:48:43,813 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-14 13:48:43,813 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-14 13:48:43,813 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-14 13:48:43,813 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 923bc1d588e1fd31be856d665fc28cbbbed3a9b002263483bc91775fdffd6378 [2023-02-14 13:48:43,982 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-14 13:48:44,019 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-14 13:48:44,021 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-14 13:48:44,021 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-14 13:48:44,022 INFO L275 PluginConnector]: CDTParser initialized [2023-02-14 13:48:44,022 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inb.i [2023-02-14 13:48:44,946 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-14 13:48:45,219 INFO L351 CDTParser]: Found 1 translation units. [2023-02-14 13:48:45,220 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inb.i [2023-02-14 13:48:45,244 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d3f45a31/fd86078f91b74a1d9c7cf53da758fe68/FLAGf44726968 [2023-02-14 13:48:45,258 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d3f45a31/fd86078f91b74a1d9c7cf53da758fe68 [2023-02-14 13:48:45,260 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-14 13:48:45,261 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-14 13:48:45,263 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-14 13:48:45,263 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-14 13:48:45,265 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-14 13:48:45,266 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 01:48:45" (1/1) ... [2023-02-14 13:48:45,267 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15bcff07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:48:45, skipping insertion in model container [2023-02-14 13:48:45,267 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 01:48:45" (1/1) ... [2023-02-14 13:48:45,271 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-14 13:48:45,328 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-14 13:48:45,485 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_inb.i[455,468] [2023-02-14 13:48:45,935 WARN L623 FunctionHandler]: Unknown extern function misc_register [2023-02-14 13:48:45,936 WARN L623 FunctionHandler]: Unknown extern function register_reboot_notifier [2023-02-14 13:48:45,939 WARN L623 FunctionHandler]: Unknown extern function misc_deregister [2023-02-14 13:48:45,941 WARN L623 FunctionHandler]: Unknown extern function misc_deregister [2023-02-14 13:48:45,941 WARN L623 FunctionHandler]: Unknown extern function unregister_reboot_notifier [2023-02-14 13:48:46,062 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_nondet_sector_t [2023-02-14 13:48:46,183 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 13:48:46,213 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) [2023-02-14 13:48:46,213 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@28532eca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:48:46, skipping insertion in model container [2023-02-14 13:48:46,214 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-14 13:48:46,214 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-02-14 13:48:46,215 INFO L158 Benchmark]: Toolchain (without parser) took 953.19ms. Allocated memory is still 142.6MB. Free memory was 101.8MB in the beginning and 101.5MB in the end (delta: 339.3kB). Peak memory consumption was 41.8MB. Max. memory is 16.1GB. [2023-02-14 13:48:46,215 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 109.1MB. Free memory is still 84.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-14 13:48:46,216 INFO L158 Benchmark]: CACSL2BoogieTranslator took 950.85ms. Allocated memory is still 142.6MB. Free memory was 101.5MB in the beginning and 101.5MB in the end (delta: 55.8kB). Peak memory consumption was 41.8MB. Max. memory is 16.1GB. [2023-02-14 13:48:46,216 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 109.1MB. Free memory is still 84.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 950.85ms. Allocated memory is still 142.6MB. Free memory was 101.5MB in the beginning and 101.5MB in the end (delta: 55.8kB). Peak memory consumption was 41.8MB. 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_inb.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 923bc1d588e1fd31be856d665fc28cbbbed3a9b002263483bc91775fdffd6378 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3dbbec3 [2023-02-14 13:48:47,739 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-14 13:48:47,741 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-14 13:48:47,777 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-14 13:48:47,779 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-14 13:48:47,781 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-14 13:48:47,783 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-14 13:48:47,785 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-14 13:48:47,788 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-14 13:48:47,791 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-14 13:48:47,792 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-14 13:48:47,793 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-14 13:48:47,794 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-14 13:48:47,795 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-14 13:48:47,796 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-14 13:48:47,798 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-14 13:48:47,799 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-14 13:48:47,800 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-14 13:48:47,801 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-14 13:48:47,804 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-14 13:48:47,805 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-14 13:48:47,806 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-14 13:48:47,806 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-14 13:48:47,807 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-14 13:48:47,811 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-14 13:48:47,812 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-14 13:48:47,812 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-14 13:48:47,813 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-14 13:48:47,813 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-14 13:48:47,814 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-14 13:48:47,814 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-14 13:48:47,818 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-14 13:48:47,819 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-14 13:48:47,820 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-14 13:48:47,820 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-14 13:48:47,820 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-14 13:48:47,821 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-14 13:48:47,821 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-14 13:48:47,821 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-14 13:48:47,822 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-14 13:48:47,822 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-14 13:48:47,823 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-02-14 13:48:47,857 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-14 13:48:47,857 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-14 13:48:47,858 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-14 13:48:47,858 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-14 13:48:47,859 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-14 13:48:47,859 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-14 13:48:47,859 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-14 13:48:47,859 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-14 13:48:47,860 INFO L138 SettingsManager]: * Use SBE=true [2023-02-14 13:48:47,860 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-14 13:48:47,860 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-14 13:48:47,860 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-14 13:48:47,861 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-14 13:48:47,861 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-14 13:48:47,861 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-14 13:48:47,861 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-14 13:48:47,861 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-14 13:48:47,861 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-14 13:48:47,861 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-14 13:48:47,862 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-14 13:48:47,862 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-02-14 13:48:47,862 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-02-14 13:48:47,862 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-14 13:48:47,862 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-14 13:48:47,862 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-14 13:48:47,863 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-14 13:48:47,863 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-14 13:48:47,863 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 13:48:47,863 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-14 13:48:47,863 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-14 13:48:47,863 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-02-14 13:48:47,864 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-02-14 13:48:47,864 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-14 13:48:47,864 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-14 13:48:47,864 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-14 13:48:47,864 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-02-14 13:48:47,864 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-14 13:48:47,865 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 923bc1d588e1fd31be856d665fc28cbbbed3a9b002263483bc91775fdffd6378 [2023-02-14 13:48:48,093 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-14 13:48:48,107 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-14 13:48:48,109 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-14 13:48:48,110 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-14 13:48:48,110 INFO L275 PluginConnector]: CDTParser initialized [2023-02-14 13:48:48,112 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inb.i [2023-02-14 13:48:49,057 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-14 13:48:49,323 INFO L351 CDTParser]: Found 1 translation units. [2023-02-14 13:48:49,324 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inb.i [2023-02-14 13:48:49,338 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d14fdf3d0/e27a244f967c4a16b0c6d8412d20632c/FLAG21d428178 [2023-02-14 13:48:49,347 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d14fdf3d0/e27a244f967c4a16b0c6d8412d20632c [2023-02-14 13:48:49,349 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-14 13:48:49,350 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-14 13:48:49,351 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-14 13:48:49,351 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-14 13:48:49,355 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-14 13:48:49,355 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 01:48:49" (1/1) ... [2023-02-14 13:48:49,356 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55a2bc6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:48:49, skipping insertion in model container [2023-02-14 13:48:49,356 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 01:48:49" (1/1) ... [2023-02-14 13:48:49,361 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-14 13:48:49,443 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-14 13:48:49,559 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_inb.i[455,468] [2023-02-14 13:48:50,039 WARN L623 FunctionHandler]: Unknown extern function misc_register [2023-02-14 13:48:50,040 WARN L623 FunctionHandler]: Unknown extern function register_reboot_notifier [2023-02-14 13:48:50,043 WARN L623 FunctionHandler]: Unknown extern function misc_deregister [2023-02-14 13:48:50,045 WARN L623 FunctionHandler]: Unknown extern function misc_deregister [2023-02-14 13:48:50,045 WARN L623 FunctionHandler]: Unknown extern function unregister_reboot_notifier [2023-02-14 13:48:50,172 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_nondet_sector_t [2023-02-14 13:48:50,284 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 13:48:50,328 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-02-14 13:48:50,340 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-14 13:48:50,341 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_inb.i[455,468] [2023-02-14 13:48:50,379 WARN L623 FunctionHandler]: Unknown extern function misc_register [2023-02-14 13:48:50,380 WARN L623 FunctionHandler]: Unknown extern function register_reboot_notifier [2023-02-14 13:48:50,382 WARN L623 FunctionHandler]: Unknown extern function misc_deregister [2023-02-14 13:48:50,382 WARN L623 FunctionHandler]: Unknown extern function misc_deregister [2023-02-14 13:48:50,382 WARN L623 FunctionHandler]: Unknown extern function unregister_reboot_notifier [2023-02-14 13:48:50,403 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_nondet_sector_t [2023-02-14 13:48:50,468 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 13:48:50,482 INFO L203 MainTranslator]: Completed pre-run [2023-02-14 13:48:50,490 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_inb.i[455,468] [2023-02-14 13:48:50,530 WARN L623 FunctionHandler]: Unknown extern function misc_register [2023-02-14 13:48:50,531 WARN L623 FunctionHandler]: Unknown extern function register_reboot_notifier [2023-02-14 13:48:50,531 WARN L623 FunctionHandler]: Unknown extern function misc_deregister [2023-02-14 13:48:50,532 WARN L623 FunctionHandler]: Unknown extern function misc_deregister [2023-02-14 13:48:50,532 WARN L623 FunctionHandler]: Unknown extern function unregister_reboot_notifier [2023-02-14 13:48:50,541 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_nondet_sector_t [2023-02-14 13:48:50,596 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 13:48:50,706 INFO L208 MainTranslator]: Completed translation [2023-02-14 13:48:50,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:48:50 WrapperNode [2023-02-14 13:48:50,707 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-14 13:48:50,708 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-14 13:48:50,708 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-14 13:48:50,708 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-14 13:48:50,712 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:48:50" (1/1) ... [2023-02-14 13:48:50,756 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:48:50" (1/1) ... [2023-02-14 13:48:50,813 INFO L138 Inliner]: procedures = 482, calls = 839, calls flagged for inlining = 54, calls inlined = 37, statements flattened = 966 [2023-02-14 13:48:50,817 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-14 13:48:50,818 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-14 13:48:50,819 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-14 13:48:50,819 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-14 13:48:50,825 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:48:50" (1/1) ... [2023-02-14 13:48:50,825 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:48:50" (1/1) ... [2023-02-14 13:48:50,839 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:48:50" (1/1) ... [2023-02-14 13:48:50,840 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:48:50" (1/1) ... [2023-02-14 13:48:50,861 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:48:50" (1/1) ... [2023-02-14 13:48:50,865 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:48:50" (1/1) ... [2023-02-14 13:48:50,870 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:48:50" (1/1) ... [2023-02-14 13:48:50,874 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:48:50" (1/1) ... [2023-02-14 13:48:50,881 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-14 13:48:50,881 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-14 13:48:50,881 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-14 13:48:50,882 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-14 13:48:50,882 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:48:50" (1/1) ... [2023-02-14 13:48:50,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 13:48:50,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 13:48:50,912 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) [2023-02-14 13:48:50,920 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 [2023-02-14 13:48:50,960 INFO L130 BoogieDeclarations]: Found specification of procedure zf_timer_off [2023-02-14 13:48:50,961 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_timer_off [2023-02-14 13:48:50,961 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~C_UINT~X~C_ULONG~TO~C_INT [2023-02-14 13:48:50,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~C_UINT~X~C_ULONG~TO~C_INT [2023-02-14 13:48:50,961 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-02-14 13:48:50,961 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_atomic_begin [2023-02-14 13:48:50,962 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-02-14 13:48:50,962 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-02-14 13:48:50,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-14 13:48:50,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2023-02-14 13:48:50,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-02-14 13:48:50,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-02-14 13:48:50,963 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2023-02-14 13:48:50,963 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2023-02-14 13:48:50,963 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-02-14 13:48:50,963 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_atomic_end [2023-02-14 13:48:50,964 INFO L130 BoogieDeclarations]: Found specification of procedure zf_get_control [2023-02-14 13:48:50,964 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_get_control [2023-02-14 13:48:50,964 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2023-02-14 13:48:50,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2023-02-14 13:48:50,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-14 13:48:50,964 INFO L130 BoogieDeclarations]: Found specification of procedure request_region [2023-02-14 13:48:50,964 INFO L138 BoogieDeclarations]: Found implementation of procedure request_region [2023-02-14 13:48:50,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-14 13:48:50,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-14 13:48:50,965 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-02-14 13:48:50,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-02-14 13:48:50,965 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irqsave [2023-02-14 13:48:50,965 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irqsave [2023-02-14 13:48:50,966 INFO L130 BoogieDeclarations]: Found specification of procedure release_region [2023-02-14 13:48:50,966 INFO L138 BoogieDeclarations]: Found implementation of procedure release_region [2023-02-14 13:48:50,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-14 13:48:50,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-14 13:48:50,966 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_init [2023-02-14 13:48:50,966 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_init [2023-02-14 13:48:50,966 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2023-02-14 13:48:50,966 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-02-14 13:48:50,966 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2023-02-14 13:48:50,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-02-14 13:48:50,967 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-02-14 13:48:50,967 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-02-14 13:48:50,967 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2023-02-14 13:48:50,967 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2023-02-14 13:48:50,967 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-14 13:48:50,967 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-14 13:48:50,967 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2023-02-14 13:48:50,967 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2023-02-14 13:48:50,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2023-02-14 13:48:50,968 INFO L130 BoogieDeclarations]: Found specification of procedure cdev_add [2023-02-14 13:48:50,968 INFO L138 BoogieDeclarations]: Found implementation of procedure cdev_add [2023-02-14 13:48:50,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2023-02-14 13:48:50,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2023-02-14 13:48:50,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-02-14 13:48:50,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-02-14 13:48:50,968 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-02-14 13:48:50,969 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-02-14 13:48:50,969 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2023-02-14 13:48:50,969 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2023-02-14 13:48:50,969 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2023-02-14 13:48:50,969 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2023-02-14 13:48:50,969 INFO L130 BoogieDeclarations]: Found specification of procedure misc_deregister [2023-02-14 13:48:50,970 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_deregister [2023-02-14 13:48:50,970 INFO L130 BoogieDeclarations]: Found specification of procedure assert_context_process [2023-02-14 13:48:50,970 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_context_process [2023-02-14 13:48:50,970 INFO L130 BoogieDeclarations]: Found specification of procedure zf_set_control [2023-02-14 13:48:50,970 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_set_control [2023-02-14 13:48:50,971 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~C_ULONG~X~$Pointer$~TO~C_LONG [2023-02-14 13:48:50,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~C_ULONG~X~$Pointer$~TO~C_LONG [2023-02-14 13:48:50,971 INFO L130 BoogieDeclarations]: Found specification of procedure zf_readw [2023-02-14 13:48:50,971 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_readw [2023-02-14 13:48:50,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2023-02-14 13:48:50,972 INFO L130 BoogieDeclarations]: Found specification of procedure zf_ping [2023-02-14 13:48:50,972 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_ping [2023-02-14 13:48:50,972 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2023-02-14 13:48:50,972 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2023-02-14 13:48:50,972 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~C_ULONG~TO~VOID [2023-02-14 13:48:50,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~C_ULONG~TO~VOID [2023-02-14 13:48:51,223 INFO L235 CfgBuilder]: Building ICFG [2023-02-14 13:48:51,225 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-14 13:48:54,157 INFO L276 CfgBuilder]: Performing block encoding [2023-02-14 13:48:54,168 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-14 13:48:54,169 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2023-02-14 13:48:54,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 01:48:54 BoogieIcfgContainer [2023-02-14 13:48:54,171 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-14 13:48:54,172 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-14 13:48:54,172 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-14 13:48:54,174 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-14 13:48:54,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.02 01:48:49" (1/3) ... [2023-02-14 13:48:54,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c9391d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 01:48:54, skipping insertion in model container [2023-02-14 13:48:54,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 01:48:50" (2/3) ... [2023-02-14 13:48:54,178 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c9391d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 01:48:54, skipping insertion in model container [2023-02-14 13:48:54,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 01:48:54" (3/3) ... [2023-02-14 13:48:54,179 INFO L112 eAbstractionObserver]: Analyzing ICFG ddv_machzwd_inb.i [2023-02-14 13:48:54,190 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-14 13:48:54,190 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 205 error locations. [2023-02-14 13:48:54,229 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-14 13:48:54,233 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;@312d4da8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-14 13:48:54,233 INFO L358 AbstractCegarLoop]: Starting to check reachability of 205 error locations. [2023-02-14 13:48:54,238 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) [2023-02-14 13:48:54,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-02-14 13:48:54,243 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 13:48:54,244 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-02-14 13:48:54,244 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)] === [2023-02-14 13:48:54,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 13:48:54,247 INFO L85 PathProgramCache]: Analyzing trace with hash 327228190, now seen corresponding path program 1 times [2023-02-14 13:48:54,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 13:48:54,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1489181634] [2023-02-14 13:48:54,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 13:48:54,258 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 [2023-02-14 13:48:54,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 13:48:54,261 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) [2023-02-14 13:48:54,322 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 [2023-02-14 13:48:54,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:48:54,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-14 13:48:54,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 13:48:54,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 13:48:54,719 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 13:48:54,719 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 13:48:54,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1489181634] [2023-02-14 13:48:54,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1489181634] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 13:48:54,720 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 13:48:54,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 13:48:54,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369274439] [2023-02-14 13:48:54,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 13:48:54,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-14 13:48:54,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 13:48:54,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-14 13:48:54,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-14 13:48:54,812 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) [2023-02-14 13:48:56,842 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-14 13:48:58,848 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-14 13:49:00,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 13:49:00,651 INFO L93 Difference]: Finished difference Result 1200 states and 1437 transitions. [2023-02-14 13:49:00,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-14 13:49:00,653 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 [2023-02-14 13:49:00,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 13:49:00,676 INFO L225 Difference]: With dead ends: 1200 [2023-02-14 13:49:00,676 INFO L226 Difference]: Without dead ends: 1196 [2023-02-14 13:49:00,677 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 [2023-02-14 13:49:00,679 INFO L413 NwaCegarLoop]: 753 mSDtfsCounter, 684 mSDsluCounter, 1710 mSDsCounter, 0 mSdLazyCounter, 1106 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s 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, 5.7s IncrementalHoareTripleChecker+Time [2023-02-14 13:49:00,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [685 Valid, 2463 Invalid, 1112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1106 Invalid, 2 Unknown, 0 Unchecked, 5.7s Time] [2023-02-14 13:49:00,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1196 states. [2023-02-14 13:49:00,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1196 to 983. [2023-02-14 13:49:00,743 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) [2023-02-14 13:49:00,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 983 states to 983 states and 1341 transitions. [2023-02-14 13:49:00,748 INFO L78 Accepts]: Start accepts. Automaton has 983 states and 1341 transitions. Word has length 5 [2023-02-14 13:49:00,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 13:49:00,749 INFO L495 AbstractCegarLoop]: Abstraction has 983 states and 1341 transitions. [2023-02-14 13:49:00,749 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) [2023-02-14 13:49:00,749 INFO L276 IsEmpty]: Start isEmpty. Operand 983 states and 1341 transitions. [2023-02-14 13:49:00,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-02-14 13:49:00,749 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 13:49:00,749 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-02-14 13:49:00,763 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 [2023-02-14 13:49:00,962 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 [2023-02-14 13:49:00,962 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)] === [2023-02-14 13:49:00,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 13:49:00,963 INFO L85 PathProgramCache]: Analyzing trace with hash 327228191, now seen corresponding path program 1 times [2023-02-14 13:49:00,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 13:49:00,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1601184190] [2023-02-14 13:49:00,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 13:49:00,963 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 [2023-02-14 13:49:00,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 13:49:00,965 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) [2023-02-14 13:49:00,967 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 [2023-02-14 13:49:01,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:49:01,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-14 13:49:01,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 13:49:01,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 13:49:01,369 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 13:49:01,369 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 13:49:01,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1601184190] [2023-02-14 13:49:01,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1601184190] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 13:49:01,369 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 13:49:01,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 13:49:01,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529251577] [2023-02-14 13:49:01,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 13:49:01,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-14 13:49:01,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 13:49:01,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-14 13:49:01,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-14 13:49:01,371 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) [2023-02-14 13:49:03,394 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-14 13:49:05,398 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-14 13:49:06,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 13:49:06,996 INFO L93 Difference]: Finished difference Result 1115 states and 1433 transitions. [2023-02-14 13:49:06,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-14 13:49:06,997 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 [2023-02-14 13:49:06,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 13:49:07,004 INFO L225 Difference]: With dead ends: 1115 [2023-02-14 13:49:07,004 INFO L226 Difference]: Without dead ends: 1115 [2023-02-14 13:49:07,004 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 [2023-02-14 13:49:07,005 INFO L413 NwaCegarLoop]: 837 mSDtfsCounter, 268 mSDsluCounter, 1781 mSDsCounter, 0 mSdLazyCounter, 850 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s 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, 5.5s IncrementalHoareTripleChecker+Time [2023-02-14 13:49:07,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 2618 Invalid, 853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 850 Invalid, 2 Unknown, 0 Unchecked, 5.5s Time] [2023-02-14 13:49:07,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1115 states. [2023-02-14 13:49:07,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1115 to 1056. [2023-02-14 13:49:07,033 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) [2023-02-14 13:49:07,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1056 states to 1056 states and 1429 transitions. [2023-02-14 13:49:07,037 INFO L78 Accepts]: Start accepts. Automaton has 1056 states and 1429 transitions. Word has length 5 [2023-02-14 13:49:07,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 13:49:07,037 INFO L495 AbstractCegarLoop]: Abstraction has 1056 states and 1429 transitions. [2023-02-14 13:49:07,037 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) [2023-02-14 13:49:07,038 INFO L276 IsEmpty]: Start isEmpty. Operand 1056 states and 1429 transitions. [2023-02-14 13:49:07,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-02-14 13:49:07,038 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 13:49:07,038 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 13:49:07,067 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 (3)] Forceful destruction successful, exit code 0 [2023-02-14 13:49:07,250 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 [2023-02-14 13:49:07,251 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)] === [2023-02-14 13:49:07,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 13:49:07,251 INFO L85 PathProgramCache]: Analyzing trace with hash -27521378, now seen corresponding path program 1 times [2023-02-14 13:49:07,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 13:49:07,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [70533168] [2023-02-14 13:49:07,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 13:49:07,252 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 [2023-02-14 13:49:07,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 13:49:07,253 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) [2023-02-14 13:49:07,255 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 (4)] Waiting until timeout for monitored process [2023-02-14 13:49:07,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:49:07,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-14 13:49:07,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 13:49:07,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 13:49:07,568 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 13:49:07,568 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 13:49:07,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [70533168] [2023-02-14 13:49:07,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [70533168] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 13:49:07,568 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 13:49:07,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-02-14 13:49:07,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091771226] [2023-02-14 13:49:07,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 13:49:07,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 13:49:07,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 13:49:07,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 13:49:07,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 13:49:07,570 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) [2023-02-14 13:49:08,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 13:49:08,417 INFO L93 Difference]: Finished difference Result 1262 states and 1516 transitions. [2023-02-14 13:49:08,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 13:49:08,417 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 [2023-02-14 13:49:08,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 13:49:08,421 INFO L225 Difference]: With dead ends: 1262 [2023-02-14 13:49:08,421 INFO L226 Difference]: Without dead ends: 1262 [2023-02-14 13:49:08,421 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 [2023-02-14 13:49:08,422 INFO L413 NwaCegarLoop]: 739 mSDtfsCounter, 657 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.8s IncrementalHoareTripleChecker+Time [2023-02-14 13:49:08,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [657 Valid, 1284 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-02-14 13:49:08,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1262 states. [2023-02-14 13:49:08,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1262 to 1055. [2023-02-14 13:49:08,439 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) [2023-02-14 13:49:08,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1055 states to 1055 states and 1424 transitions. [2023-02-14 13:49:08,443 INFO L78 Accepts]: Start accepts. Automaton has 1055 states and 1424 transitions. Word has length 11 [2023-02-14 13:49:08,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 13:49:08,443 INFO L495 AbstractCegarLoop]: Abstraction has 1055 states and 1424 transitions. [2023-02-14 13:49:08,443 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) [2023-02-14 13:49:08,443 INFO L276 IsEmpty]: Start isEmpty. Operand 1055 states and 1424 transitions. [2023-02-14 13:49:08,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-02-14 13:49:08,444 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 13:49:08,444 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 13:49:08,454 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 [2023-02-14 13:49:08,654 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 [2023-02-14 13:49:08,655 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)] === [2023-02-14 13:49:08,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 13:49:08,656 INFO L85 PathProgramCache]: Analyzing trace with hash -27521377, now seen corresponding path program 1 times [2023-02-14 13:49:08,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 13:49:08,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1201012478] [2023-02-14 13:49:08,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 13:49:08,657 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 [2023-02-14 13:49:08,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 13:49:08,658 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) [2023-02-14 13:49:08,660 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 [2023-02-14 13:49:08,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:49:08,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-14 13:49:08,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 13:49:09,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 13:49:09,026 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 13:49:09,026 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 13:49:09,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1201012478] [2023-02-14 13:49:09,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1201012478] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 13:49:09,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 13:49:09,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-14 13:49:09,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512206028] [2023-02-14 13:49:09,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 13:49:09,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-14 13:49:09,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 13:49:09,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-14 13:49:09,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-14 13:49:09,028 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) [2023-02-14 13:49:11,045 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 [] [2023-02-14 13:49:12,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 13:49:12,306 INFO L93 Difference]: Finished difference Result 1121 states and 1439 transitions. [2023-02-14 13:49:12,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-14 13:49:12,307 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 [2023-02-14 13:49:12,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 13:49:12,310 INFO L225 Difference]: With dead ends: 1121 [2023-02-14 13:49:12,310 INFO L226 Difference]: Without dead ends: 1121 [2023-02-14 13:49:12,310 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 [2023-02-14 13:49:12,311 INFO L413 NwaCegarLoop]: 834 mSDtfsCounter, 259 mSDsluCounter, 1154 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s 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, 3.2s IncrementalHoareTripleChecker+Time [2023-02-14 13:49:12,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 1988 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 574 Invalid, 1 Unknown, 0 Unchecked, 3.2s Time] [2023-02-14 13:49:12,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1121 states. [2023-02-14 13:49:12,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1121 to 1058. [2023-02-14 13:49:12,326 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) [2023-02-14 13:49:12,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1058 states to 1058 states and 1427 transitions. [2023-02-14 13:49:12,329 INFO L78 Accepts]: Start accepts. Automaton has 1058 states and 1427 transitions. Word has length 11 [2023-02-14 13:49:12,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 13:49:12,330 INFO L495 AbstractCegarLoop]: Abstraction has 1058 states and 1427 transitions. [2023-02-14 13:49:12,330 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) [2023-02-14 13:49:12,330 INFO L276 IsEmpty]: Start isEmpty. Operand 1058 states and 1427 transitions. [2023-02-14 13:49:12,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-14 13:49:12,331 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 13:49:12,331 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 13:49:12,343 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 [2023-02-14 13:49:12,541 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 [2023-02-14 13:49:12,541 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)] === [2023-02-14 13:49:12,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 13:49:12,541 INFO L85 PathProgramCache]: Analyzing trace with hash 449678287, now seen corresponding path program 1 times [2023-02-14 13:49:12,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 13:49:12,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1327846984] [2023-02-14 13:49:12,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 13:49:12,542 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 [2023-02-14 13:49:12,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 13:49:12,545 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) [2023-02-14 13:49:12,547 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 [2023-02-14 13:49:12,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:49:12,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-14 13:49:12,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 13:49:12,978 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 13:49:12,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 13:49:13,162 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 13:49:13,163 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 13:49:13,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1327846984] [2023-02-14 13:49:13,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1327846984] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 13:49:13,163 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-14 13:49:13,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4] total 7 [2023-02-14 13:49:13,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111510955] [2023-02-14 13:49:13,163 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-14 13:49:13,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-14 13:49:13,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 13:49:13,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-14 13:49:13,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-02-14 13:49:13,164 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) [2023-02-14 13:49:15,180 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 [] [2023-02-14 13:49:17,184 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-14 13:49:19,189 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-14 13:49:21,194 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 [] [2023-02-14 13:49:25,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 13:49:25,792 INFO L93 Difference]: Finished difference Result 1331 states and 1673 transitions. [2023-02-14 13:49:25,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-14 13:49:25,794 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 [2023-02-14 13:49:25,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 13:49:25,798 INFO L225 Difference]: With dead ends: 1331 [2023-02-14 13:49:25,798 INFO L226 Difference]: Without dead ends: 1331 [2023-02-14 13:49:25,798 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 [2023-02-14 13:49:25,799 INFO L413 NwaCegarLoop]: 835 mSDtfsCounter, 1036 mSDsluCounter, 2360 mSDsCounter, 0 mSdLazyCounter, 1355 mSolverCounterSat, 82 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.9s 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, 12.4s IncrementalHoareTripleChecker+Time [2023-02-14 13:49:25,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1048 Valid, 3195 Invalid, 1441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1355 Invalid, 4 Unknown, 0 Unchecked, 12.4s Time] [2023-02-14 13:49:25,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1331 states. [2023-02-14 13:49:25,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1331 to 1205. [2023-02-14 13:49:25,816 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) [2023-02-14 13:49:25,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1205 states to 1205 states and 1653 transitions. [2023-02-14 13:49:25,819 INFO L78 Accepts]: Start accepts. Automaton has 1205 states and 1653 transitions. Word has length 14 [2023-02-14 13:49:25,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 13:49:25,820 INFO L495 AbstractCegarLoop]: Abstraction has 1205 states and 1653 transitions. [2023-02-14 13:49:25,820 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) [2023-02-14 13:49:25,820 INFO L276 IsEmpty]: Start isEmpty. Operand 1205 states and 1653 transitions. [2023-02-14 13:49:25,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-14 13:49:25,820 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 13:49:25,821 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 13:49:25,833 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 (6)] Ended with exit code 0 [2023-02-14 13:49:26,033 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 [2023-02-14 13:49:26,033 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)] === [2023-02-14 13:49:26,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 13:49:26,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1064725833, now seen corresponding path program 1 times [2023-02-14 13:49:26,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 13:49:26,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [578419602] [2023-02-14 13:49:26,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 13:49:26,034 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 [2023-02-14 13:49:26,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 13:49:26,035 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) [2023-02-14 13:49:26,035 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 [2023-02-14 13:49:26,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:49:26,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-14 13:49:26,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 13:49:26,364 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 13:49:26,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 13:49:26,422 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 13:49:26,422 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 13:49:26,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [578419602] [2023-02-14 13:49:26,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [578419602] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 13:49:26,422 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-14 13:49:26,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-02-14 13:49:26,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69817967] [2023-02-14 13:49:26,422 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-14 13:49:26,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-14 13:49:26,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 13:49:26,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-14 13:49:26,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-02-14 13:49:26,423 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) [2023-02-14 13:49:26,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 13:49:26,647 INFO L93 Difference]: Finished difference Result 1211 states and 1657 transitions. [2023-02-14 13:49:26,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-14 13:49:26,647 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 [2023-02-14 13:49:26,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 13:49:26,651 INFO L225 Difference]: With dead ends: 1211 [2023-02-14 13:49:26,651 INFO L226 Difference]: Without dead ends: 1211 [2023-02-14 13:49:26,651 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 [2023-02-14 13:49:26,652 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 [2023-02-14 13:49:26,652 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] [2023-02-14 13:49:26,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1211 states. [2023-02-14 13:49:26,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1211 to 1210. [2023-02-14 13:49:26,667 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) [2023-02-14 13:49:26,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1657 transitions. [2023-02-14 13:49:26,670 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1657 transitions. Word has length 19 [2023-02-14 13:49:26,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 13:49:26,670 INFO L495 AbstractCegarLoop]: Abstraction has 1210 states and 1657 transitions. [2023-02-14 13:49:26,670 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) [2023-02-14 13:49:26,670 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1657 transitions. [2023-02-14 13:49:26,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-02-14 13:49:26,671 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 13:49:26,671 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 13:49:26,695 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 (7)] Forceful destruction successful, exit code 0 [2023-02-14 13:49:26,882 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 [2023-02-14 13:49:26,882 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)] === [2023-02-14 13:49:26,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 13:49:26,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1407192417, now seen corresponding path program 2 times [2023-02-14 13:49:26,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 13:49:26,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1584590029] [2023-02-14 13:49:26,883 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-14 13:49:26,883 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 [2023-02-14 13:49:26,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 13:49:26,884 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) [2023-02-14 13:49:26,885 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 [2023-02-14 13:49:27,290 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-14 13:49:27,290 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 13:49:27,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 580 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-14 13:49:27,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 13:49:27,518 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 13:49:27,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 13:49:28,175 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 13:49:28,175 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 13:49:28,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1584590029] [2023-02-14 13:49:28,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1584590029] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 13:49:28,175 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-14 13:49:28,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 14 [2023-02-14 13:49:28,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512872606] [2023-02-14 13:49:28,176 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-14 13:49:28,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-02-14 13:49:28,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 13:49:28,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-02-14 13:49:28,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2023-02-14 13:49:28,177 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) [2023-02-14 13:49:30,194 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 [] [2023-02-14 13:49:32,201 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-14 13:49:34,205 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-14 13:49:36,210 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-14 13:49:38,215 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-14 13:49:40,218 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 [] [2023-02-14 13:49:49,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 13:49:49,427 INFO L93 Difference]: Finished difference Result 1337 states and 1691 transitions. [2023-02-14 13:49:49,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-02-14 13:49:49,428 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 [2023-02-14 13:49:49,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 13:49:49,431 INFO L225 Difference]: With dead ends: 1337 [2023-02-14 13:49:49,431 INFO L226 Difference]: Without dead ends: 1337 [2023-02-14 13:49:49,432 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 [2023-02-14 13:49:49,432 INFO L413 NwaCegarLoop]: 823 mSDtfsCounter, 701 mSDsluCounter, 5514 mSDsCounter, 0 mSdLazyCounter, 3127 mSolverCounterSat, 81 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.0s 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, 19.8s IncrementalHoareTripleChecker+Time [2023-02-14 13:49:49,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [713 Valid, 6337 Invalid, 3214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 3127 Invalid, 6 Unknown, 0 Unchecked, 19.8s Time] [2023-02-14 13:49:49,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1337 states. [2023-02-14 13:49:49,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1337 to 1223. [2023-02-14 13:49:49,446 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) [2023-02-14 13:49:49,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1223 states to 1223 states and 1673 transitions. [2023-02-14 13:49:49,449 INFO L78 Accepts]: Start accepts. Automaton has 1223 states and 1673 transitions. Word has length 23 [2023-02-14 13:49:49,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 13:49:49,449 INFO L495 AbstractCegarLoop]: Abstraction has 1223 states and 1673 transitions. [2023-02-14 13:49:49,449 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) [2023-02-14 13:49:49,449 INFO L276 IsEmpty]: Start isEmpty. Operand 1223 states and 1673 transitions. [2023-02-14 13:49:49,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-02-14 13:49:49,450 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 13:49:49,450 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 13:49:49,464 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 (8)] Ended with exit code 0 [2023-02-14 13:49:49,661 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 [2023-02-14 13:49:49,664 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)] === [2023-02-14 13:49:49,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 13:49:49,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1830179145, now seen corresponding path program 2 times [2023-02-14 13:49:49,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 13:49:49,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1947006372] [2023-02-14 13:49:49,665 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-14 13:49:49,665 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 [2023-02-14 13:49:49,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 13:49:49,666 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) [2023-02-14 13:49:49,666 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 [2023-02-14 13:49:49,973 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-02-14 13:49:49,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 13:49:49,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-14 13:49:49,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 13:49:50,090 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-02-14 13:49:50,090 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 13:49:50,090 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 13:49:50,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1947006372] [2023-02-14 13:49:50,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1947006372] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 13:49:50,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 13:49:50,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-02-14 13:49:50,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994221928] [2023-02-14 13:49:50,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 13:49:50,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 13:49:50,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 13:49:50,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 13:49:50,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 13:49:50,092 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) [2023-02-14 13:49:51,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 13:49:51,001 INFO L93 Difference]: Finished difference Result 1431 states and 1766 transitions. [2023-02-14 13:49:51,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 13:49:51,001 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 [2023-02-14 13:49:51,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 13:49:51,005 INFO L225 Difference]: With dead ends: 1431 [2023-02-14 13:49:51,005 INFO L226 Difference]: Without dead ends: 1431 [2023-02-14 13:49:51,005 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 [2023-02-14 13:49:51,006 INFO L413 NwaCegarLoop]: 740 mSDtfsCounter, 643 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 0.9s IncrementalHoareTripleChecker+Time [2023-02-14 13:49:51,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [643 Valid, 1282 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-02-14 13:49:51,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1431 states. [2023-02-14 13:49:51,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1431 to 1221. [2023-02-14 13:49:51,020 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) [2023-02-14 13:49:51,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1221 states to 1221 states and 1664 transitions. [2023-02-14 13:49:51,023 INFO L78 Accepts]: Start accepts. Automaton has 1221 states and 1664 transitions. Word has length 31 [2023-02-14 13:49:51,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 13:49:51,023 INFO L495 AbstractCegarLoop]: Abstraction has 1221 states and 1664 transitions. [2023-02-14 13:49:51,023 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) [2023-02-14 13:49:51,023 INFO L276 IsEmpty]: Start isEmpty. Operand 1221 states and 1664 transitions. [2023-02-14 13:49:51,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-02-14 13:49:51,024 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 13:49:51,024 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 13:49:51,037 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 [2023-02-14 13:49:51,234 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 [2023-02-14 13:49:51,235 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)] === [2023-02-14 13:49:51,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 13:49:51,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1830179146, now seen corresponding path program 1 times [2023-02-14 13:49:51,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 13:49:51,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [618487824] [2023-02-14 13:49:51,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 13:49:51,236 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 [2023-02-14 13:49:51,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 13:49:51,237 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) [2023-02-14 13:49:51,239 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 [2023-02-14 13:49:51,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:49:51,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-14 13:49:51,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 13:49:51,667 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 13:49:51,667 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 13:49:51,799 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 13:49:51,799 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 13:49:51,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [618487824] [2023-02-14 13:49:51,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [618487824] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 13:49:51,799 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-14 13:49:51,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-02-14 13:49:51,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136088167] [2023-02-14 13:49:51,799 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-14 13:49:51,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-02-14 13:49:51,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 13:49:51,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-02-14 13:49:51,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2023-02-14 13:49:51,800 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) [2023-02-14 13:49:52,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 13:49:52,273 INFO L93 Difference]: Finished difference Result 1221 states and 1660 transitions. [2023-02-14 13:49:52,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-14 13:49:52,274 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 [2023-02-14 13:49:52,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 13:49:52,277 INFO L225 Difference]: With dead ends: 1221 [2023-02-14 13:49:52,277 INFO L226 Difference]: Without dead ends: 1221 [2023-02-14 13:49:52,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2023-02-14 13:49:52,279 INFO L413 NwaCegarLoop]: 780 mSDtfsCounter, 3379 mSDsluCounter, 4789 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 235 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.4s IncrementalHoareTripleChecker+Time [2023-02-14 13:49:52,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3411 Valid, 5569 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [235 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-14 13:49:52,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1221 states. [2023-02-14 13:49:52,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1221 to 1221. [2023-02-14 13:49:52,294 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) [2023-02-14 13:49:52,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1221 states to 1221 states and 1660 transitions. [2023-02-14 13:49:52,297 INFO L78 Accepts]: Start accepts. Automaton has 1221 states and 1660 transitions. Word has length 31 [2023-02-14 13:49:52,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 13:49:52,298 INFO L495 AbstractCegarLoop]: Abstraction has 1221 states and 1660 transitions. [2023-02-14 13:49:52,298 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) [2023-02-14 13:49:52,298 INFO L276 IsEmpty]: Start isEmpty. Operand 1221 states and 1660 transitions. [2023-02-14 13:49:52,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-02-14 13:49:52,300 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 13:49:52,300 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 13:49:52,314 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 [2023-02-14 13:49:52,512 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 [2023-02-14 13:49:52,512 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)] === [2023-02-14 13:49:52,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 13:49:52,513 INFO L85 PathProgramCache]: Analyzing trace with hash -738162529, now seen corresponding path program 3 times [2023-02-14 13:49:52,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 13:49:52,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1242691709] [2023-02-14 13:49:52,513 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-14 13:49:52,513 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 [2023-02-14 13:49:52,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 13:49:52,514 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) [2023-02-14 13:49:52,515 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 [2023-02-14 13:49:53,504 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-02-14 13:49:53,505 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 13:49:53,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 670 conjuncts, 16 conjunts are in the unsatisfiable core [2023-02-14 13:49:53,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 13:49:53,974 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 10 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 13:49:53,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 13:49:55,493 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 13:49:55,493 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 13:49:55,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1242691709] [2023-02-14 13:49:55,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1242691709] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 13:49:55,493 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-14 13:49:55,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 26 [2023-02-14 13:49:55,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17863950] [2023-02-14 13:49:55,494 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-14 13:49:55,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-02-14 13:49:55,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 13:49:55,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-02-14 13:49:55,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=458, Unknown=0, NotChecked=0, Total=650 [2023-02-14 13:49:55,495 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) [2023-02-14 13:49:57,513 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 [] [2023-02-14 13:49:59,517 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-14 13:50:01,521 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-14 13:50:03,525 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-14 13:50:05,533 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-14 13:50:07,538 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-14 13:50:09,542 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-14 13:50:11,546 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-14 13:50:13,553 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-14 13:50:15,556 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-14 13:50:17,560 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-14 13:50:19,563 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-14 13:50:21,570 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-14 13:50:23,574 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-14 13:50:25,577 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-14 13:50:27,581 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-14 13:50:29,586 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-14 13:50:31,592 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 [] [2023-02-14 13:50:47,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 13:50:47,339 INFO L93 Difference]: Finished difference Result 1570 states and 1888 transitions. [2023-02-14 13:50:47,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-02-14 13:50:47,340 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 [2023-02-14 13:50:47,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 13:50:47,344 INFO L225 Difference]: With dead ends: 1570 [2023-02-14 13:50:47,344 INFO L226 Difference]: Without dead ends: 1570 [2023-02-14 13:50:47,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=226, Invalid=530, Unknown=0, NotChecked=0, Total=756 [2023-02-14 13:50:47,345 INFO L413 NwaCegarLoop]: 741 mSDtfsCounter, 2399 mSDsluCounter, 8064 mSDsCounter, 0 mSdLazyCounter, 5461 mSolverCounterSat, 238 mSolverCounterUnsat, 18 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 49.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2411 SdHoareTripleChecker+Valid, 8805 SdHoareTripleChecker+Invalid, 5717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 238 IncrementalHoareTripleChecker+Valid, 5461 IncrementalHoareTripleChecker+Invalid, 18 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 51.3s IncrementalHoareTripleChecker+Time [2023-02-14 13:50:47,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2411 Valid, 8805 Invalid, 5717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [238 Valid, 5461 Invalid, 18 Unknown, 0 Unchecked, 51.3s Time] [2023-02-14 13:50:47,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1570 states. [2023-02-14 13:50:47,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1570 to 1219. [2023-02-14 13:50:47,359 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) [2023-02-14 13:50:47,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1219 states to 1219 states and 1657 transitions. [2023-02-14 13:50:47,361 INFO L78 Accepts]: Start accepts. Automaton has 1219 states and 1657 transitions. Word has length 41 [2023-02-14 13:50:47,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 13:50:47,362 INFO L495 AbstractCegarLoop]: Abstraction has 1219 states and 1657 transitions. [2023-02-14 13:50:47,362 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) [2023-02-14 13:50:47,362 INFO L276 IsEmpty]: Start isEmpty. Operand 1219 states and 1657 transitions. [2023-02-14 13:50:47,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-02-14 13:50:47,362 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 13:50:47,363 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 13:50:47,379 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 [2023-02-14 13:50:47,576 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 [2023-02-14 13:50:47,576 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)] === [2023-02-14 13:50:47,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 13:50:47,577 INFO L85 PathProgramCache]: Analyzing trace with hash -704629430, now seen corresponding path program 2 times [2023-02-14 13:50:47,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 13:50:47,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [24690562] [2023-02-14 13:50:47,578 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-14 13:50:47,578 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 [2023-02-14 13:50:47,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 13:50:47,579 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) [2023-02-14 13:50:47,579 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 [2023-02-14 13:50:47,927 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-02-14 13:50:47,927 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 13:50:47,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-14 13:50:47,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 13:50:48,169 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-02-14 13:50:48,170 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 13:50:48,170 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 13:50:48,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [24690562] [2023-02-14 13:50:48,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [24690562] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 13:50:48,170 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 13:50:48,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-14 13:50:48,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38725561] [2023-02-14 13:50:48,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 13:50:48,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-14 13:50:48,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 13:50:48,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-14 13:50:48,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-14 13:50:48,171 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) [2023-02-14 13:50:50,188 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 [] [2023-02-14 13:50:51,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 13:50:51,331 INFO L93 Difference]: Finished difference Result 1275 states and 1669 transitions. [2023-02-14 13:50:51,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-14 13:50:51,332 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 [2023-02-14 13:50:51,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 13:50:51,335 INFO L225 Difference]: With dead ends: 1275 [2023-02-14 13:50:51,335 INFO L226 Difference]: Without dead ends: 1275 [2023-02-14 13:50:51,335 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 [2023-02-14 13:50:51,336 INFO L413 NwaCegarLoop]: 830 mSDtfsCounter, 234 mSDsluCounter, 1144 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s 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, 3.1s IncrementalHoareTripleChecker+Time [2023-02-14 13:50:51,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 1974 Invalid, 574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 571 Invalid, 1 Unknown, 0 Unchecked, 3.1s Time] [2023-02-14 13:50:51,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1275 states. [2023-02-14 13:50:51,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1275 to 1217. [2023-02-14 13:50:51,348 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) [2023-02-14 13:50:51,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 1655 transitions. [2023-02-14 13:50:51,350 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 1655 transitions. Word has length 43 [2023-02-14 13:50:51,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 13:50:51,350 INFO L495 AbstractCegarLoop]: Abstraction has 1217 states and 1655 transitions. [2023-02-14 13:50:51,350 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) [2023-02-14 13:50:51,350 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 1655 transitions. [2023-02-14 13:50:51,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-02-14 13:50:51,351 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 13:50:51,351 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] [2023-02-14 13:50:51,362 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 [2023-02-14 13:50:51,561 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 [2023-02-14 13:50:51,562 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)] === [2023-02-14 13:50:51,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 13:50:51,562 INFO L85 PathProgramCache]: Analyzing trace with hash 2020825701, now seen corresponding path program 1 times [2023-02-14 13:50:51,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 13:50:51,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [207710905] [2023-02-14 13:50:51,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 13:50:51,563 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 [2023-02-14 13:50:51,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 13:50:51,564 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) [2023-02-14 13:50:51,564 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 [2023-02-14 13:50:51,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:50:51,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 755 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-14 13:50:51,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 13:50:52,037 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-02-14 13:50:52,037 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 13:50:52,037 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 13:50:52,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [207710905] [2023-02-14 13:50:52,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [207710905] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 13:50:52,038 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 13:50:52,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-14 13:50:52,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142760800] [2023-02-14 13:50:52,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 13:50:52,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 13:50:52,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 13:50:52,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 13:50:52,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 13:50:52,040 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) [2023-02-14 13:50:52,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 13:50:52,050 INFO L93 Difference]: Finished difference Result 1217 states and 1654 transitions. [2023-02-14 13:50:52,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 13:50:52,051 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 [2023-02-14 13:50:52,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 13:50:52,054 INFO L225 Difference]: With dead ends: 1217 [2023-02-14 13:50:52,054 INFO L226 Difference]: Without dead ends: 1217 [2023-02-14 13:50:52,054 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 [2023-02-14 13:50:52,055 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 [2023-02-14 13:50:52,055 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] [2023-02-14 13:50:52,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1217 states. [2023-02-14 13:50:52,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1217 to 1217. [2023-02-14 13:50:52,067 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) [2023-02-14 13:50:52,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 1654 transitions. [2023-02-14 13:50:52,069 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 1654 transitions. Word has length 67 [2023-02-14 13:50:52,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 13:50:52,070 INFO L495 AbstractCegarLoop]: Abstraction has 1217 states and 1654 transitions. [2023-02-14 13:50:52,070 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) [2023-02-14 13:50:52,071 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 1654 transitions. [2023-02-14 13:50:52,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-02-14 13:50:52,074 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 13:50:52,075 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] [2023-02-14 13:50:52,090 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 [2023-02-14 13:50:52,286 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 [2023-02-14 13:50:52,286 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)] === [2023-02-14 13:50:52,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 13:50:52,286 INFO L85 PathProgramCache]: Analyzing trace with hash 2020823779, now seen corresponding path program 1 times [2023-02-14 13:50:52,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 13:50:52,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1227164432] [2023-02-14 13:50:52,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 13:50:52,287 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 [2023-02-14 13:50:52,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 13:50:52,288 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) [2023-02-14 13:50:52,289 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 [2023-02-14 13:50:52,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:50:52,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 756 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-14 13:50:52,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 13:50:52,739 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 [2023-02-14 13:50:52,743 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-02-14 13:50:52,744 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 13:50:52,744 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 13:50:52,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1227164432] [2023-02-14 13:50:52,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1227164432] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 13:50:52,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 13:50:52,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-14 13:50:52,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468915981] [2023-02-14 13:50:52,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 13:50:52,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 13:50:52,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 13:50:52,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 13:50:52,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 13:50:52,745 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) [2023-02-14 13:50:54,761 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 [] [2023-02-14 13:50:55,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 13:50:55,180 INFO L93 Difference]: Finished difference Result 1216 states and 1653 transitions. [2023-02-14 13:50:55,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 13:50:55,180 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 [2023-02-14 13:50:55,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 13:50:55,184 INFO L225 Difference]: With dead ends: 1216 [2023-02-14 13:50:55,184 INFO L226 Difference]: Without dead ends: 1216 [2023-02-14 13:50:55,184 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 [2023-02-14 13:50:55,184 INFO L413 NwaCegarLoop]: 783 mSDtfsCounter, 2 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s 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, 2.4s IncrementalHoareTripleChecker+Time [2023-02-14 13:50:55,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1355 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 212 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2023-02-14 13:50:55,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1216 states. [2023-02-14 13:50:55,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1216 to 1216. [2023-02-14 13:50:55,196 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) [2023-02-14 13:50:55,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1216 states to 1216 states and 1653 transitions. [2023-02-14 13:50:55,198 INFO L78 Accepts]: Start accepts. Automaton has 1216 states and 1653 transitions. Word has length 67 [2023-02-14 13:50:55,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 13:50:55,198 INFO L495 AbstractCegarLoop]: Abstraction has 1216 states and 1653 transitions. [2023-02-14 13:50:55,198 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) [2023-02-14 13:50:55,198 INFO L276 IsEmpty]: Start isEmpty. Operand 1216 states and 1653 transitions. [2023-02-14 13:50:55,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-02-14 13:50:55,199 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 13:50:55,199 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] [2023-02-14 13:50:55,211 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 [2023-02-14 13:50:55,411 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 [2023-02-14 13:50:55,412 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)] === [2023-02-14 13:50:55,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 13:50:55,412 INFO L85 PathProgramCache]: Analyzing trace with hash 2020823780, now seen corresponding path program 1 times [2023-02-14 13:50:55,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 13:50:55,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1800621142] [2023-02-14 13:50:55,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 13:50:55,413 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 [2023-02-14 13:50:55,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 13:50:55,414 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) [2023-02-14 13:50:55,416 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 [2023-02-14 13:50:55,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:50:55,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 756 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-14 13:50:55,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 13:50:55,989 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 [2023-02-14 13:50:56,001 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-02-14 13:50:56,001 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 13:50:56,001 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 13:50:56,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1800621142] [2023-02-14 13:50:56,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1800621142] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 13:50:56,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 13:50:56,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-14 13:50:56,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237324923] [2023-02-14 13:50:56,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 13:50:56,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-14 13:50:56,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 13:50:56,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-14 13:50:56,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-14 13:50:56,002 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) [2023-02-14 13:50:58,020 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 [] [2023-02-14 13:50:58,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 13:50:58,652 INFO L93 Difference]: Finished difference Result 1215 states and 1652 transitions. [2023-02-14 13:50:58,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-14 13:50:58,653 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 [2023-02-14 13:50:58,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 13:50:58,655 INFO L225 Difference]: With dead ends: 1215 [2023-02-14 13:50:58,656 INFO L226 Difference]: Without dead ends: 1215 [2023-02-14 13:50:58,656 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 [2023-02-14 13:50:58,656 INFO L413 NwaCegarLoop]: 780 mSDtfsCounter, 747 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s 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, 2.6s IncrementalHoareTripleChecker+Time [2023-02-14 13:50:58,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [747 Valid, 1356 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 210 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2023-02-14 13:50:58,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1215 states. [2023-02-14 13:50:58,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1215 to 1215. [2023-02-14 13:50:58,668 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) [2023-02-14 13:50:58,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1215 states to 1215 states and 1652 transitions. [2023-02-14 13:50:58,670 INFO L78 Accepts]: Start accepts. Automaton has 1215 states and 1652 transitions. Word has length 67 [2023-02-14 13:50:58,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 13:50:58,670 INFO L495 AbstractCegarLoop]: Abstraction has 1215 states and 1652 transitions. [2023-02-14 13:50:58,670 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) [2023-02-14 13:50:58,670 INFO L276 IsEmpty]: Start isEmpty. Operand 1215 states and 1652 transitions. [2023-02-14 13:50:58,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-02-14 13:50:58,671 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 13:50:58,671 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] [2023-02-14 13:50:58,686 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 [2023-02-14 13:50:58,883 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 [2023-02-14 13:50:58,884 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)] === [2023-02-14 13:50:58,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 13:50:58,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1355687384, now seen corresponding path program 1 times [2023-02-14 13:50:58,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 13:50:58,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1862773571] [2023-02-14 13:50:58,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 13:50:58,885 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 [2023-02-14 13:50:58,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 13:50:58,886 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) [2023-02-14 13:50:58,886 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 [2023-02-14 13:50:59,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:50:59,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 749 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-14 13:50:59,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 13:50:59,375 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2023-02-14 13:50:59,375 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 13:50:59,375 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 13:50:59,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1862773571] [2023-02-14 13:50:59,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1862773571] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 13:50:59,375 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 13:50:59,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-14 13:50:59,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591073401] [2023-02-14 13:50:59,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 13:50:59,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 13:50:59,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 13:50:59,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 13:50:59,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 13:50:59,376 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) [2023-02-14 13:51:01,394 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 [] [2023-02-14 13:51:01,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 13:51:01,895 INFO L93 Difference]: Finished difference Result 1256 states and 1661 transitions. [2023-02-14 13:51:01,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 13:51:01,895 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 [2023-02-14 13:51:01,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 13:51:01,899 INFO L225 Difference]: With dead ends: 1256 [2023-02-14 13:51:01,899 INFO L226 Difference]: Without dead ends: 1244 [2023-02-14 13:51:01,899 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 [2023-02-14 13:51:01,900 INFO L413 NwaCegarLoop]: 772 mSDtfsCounter, 93 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s 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, 2.5s IncrementalHoareTripleChecker+Time [2023-02-14 13:51:01,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 1317 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 258 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2023-02-14 13:51:01,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1244 states. [2023-02-14 13:51:01,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1244 to 1211. [2023-02-14 13:51:01,916 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) [2023-02-14 13:51:01,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1211 states to 1211 states and 1645 transitions. [2023-02-14 13:51:01,918 INFO L78 Accepts]: Start accepts. Automaton has 1211 states and 1645 transitions. Word has length 74 [2023-02-14 13:51:01,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 13:51:01,918 INFO L495 AbstractCegarLoop]: Abstraction has 1211 states and 1645 transitions. [2023-02-14 13:51:01,918 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) [2023-02-14 13:51:01,919 INFO L276 IsEmpty]: Start isEmpty. Operand 1211 states and 1645 transitions. [2023-02-14 13:51:01,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-02-14 13:51:01,919 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 13:51:01,919 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] [2023-02-14 13:51:01,933 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 [2023-02-14 13:51:02,126 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 [2023-02-14 13:51:02,126 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)] === [2023-02-14 13:51:02,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 13:51:02,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1244150361, now seen corresponding path program 1 times [2023-02-14 13:51:02,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 13:51:02,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [517915737] [2023-02-14 13:51:02,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 13:51:02,127 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 [2023-02-14 13:51:02,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 13:51:02,128 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) [2023-02-14 13:51:02,130 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 [2023-02-14 13:51:03,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:51:03,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 784 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-14 13:51:03,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 13:51:03,270 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-02-14 13:51:03,271 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 [2023-02-14 13:51:03,314 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 [2023-02-14 13:51:03,342 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2023-02-14 13:51:03,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 13:51:03,405 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 13:51:03,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [517915737] [2023-02-14 13:51:03,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [517915737] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 13:51:03,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [712926770] [2023-02-14 13:51:03,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 13:51:03,405 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-02-14 13:51:03,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-02-14 13:51:03,407 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) [2023-02-14 13:51:03,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2023-02-14 13:51:04,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:51:04,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 784 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-14 13:51:04,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 13:51:05,038 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-02-14 13:51:05,038 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 [2023-02-14 13:51:05,106 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 [2023-02-14 13:51:05,155 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2023-02-14 13:51:05,155 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 13:51:05,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [712926770] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 13:51:05,198 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-14 13:51:05,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2023-02-14 13:51:05,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007868605] [2023-02-14 13:51:05,198 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-14 13:51:05,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-14 13:51:05,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 13:51:05,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-14 13:51:05,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-02-14 13:51:05,199 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) [2023-02-14 13:51:07,216 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 [] [2023-02-14 13:51:09,222 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-14 13:51:11,226 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-14 13:51:13,231 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 [] [2023-02-14 13:51:15,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 13:51:15,791 INFO L93 Difference]: Finished difference Result 1742 states and 2280 transitions. [2023-02-14 13:51:15,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-14 13:51:15,791 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 [2023-02-14 13:51:15,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 13:51:15,796 INFO L225 Difference]: With dead ends: 1742 [2023-02-14 13:51:15,796 INFO L226 Difference]: Without dead ends: 1742 [2023-02-14 13:51:15,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 149 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2023-02-14 13:51:15,797 INFO L413 NwaCegarLoop]: 704 mSDtfsCounter, 750 mSDsluCounter, 3579 mSDsCounter, 0 mSdLazyCounter, 2480 mSolverCounterSat, 4 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s 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, 10.5s IncrementalHoareTripleChecker+Time [2023-02-14 13:51:15,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [751 Valid, 4283 Invalid, 2488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2480 Invalid, 4 Unknown, 0 Unchecked, 10.5s Time] [2023-02-14 13:51:15,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1742 states. [2023-02-14 13:51:15,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1742 to 1519. [2023-02-14 13:51:15,812 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) [2023-02-14 13:51:15,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1519 states to 1519 states and 2178 transitions. [2023-02-14 13:51:15,814 INFO L78 Accepts]: Start accepts. Automaton has 1519 states and 2178 transitions. Word has length 76 [2023-02-14 13:51:15,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 13:51:15,815 INFO L495 AbstractCegarLoop]: Abstraction has 1519 states and 2178 transitions. [2023-02-14 13:51:15,815 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) [2023-02-14 13:51:15,815 INFO L276 IsEmpty]: Start isEmpty. Operand 1519 states and 2178 transitions. [2023-02-14 13:51:15,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-02-14 13:51:15,815 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 13:51:15,815 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] [2023-02-14 13:51:15,831 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 [2023-02-14 13:51:16,039 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2023-02-14 13:51:16,229 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 [2023-02-14 13:51:16,229 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)] === [2023-02-14 13:51:16,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 13:51:16,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1244150360, now seen corresponding path program 1 times [2023-02-14 13:51:16,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 13:51:16,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2029967604] [2023-02-14 13:51:16,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 13:51:16,230 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 [2023-02-14 13:51:16,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 13:51:16,231 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) [2023-02-14 13:51:16,231 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 [2023-02-14 13:51:17,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:51:17,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 784 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-14 13:51:17,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 13:51:17,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 13:51:17,636 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 [2023-02-14 13:51:17,712 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-02-14 13:51:17,712 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 13:51:20,040 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 13:51:20,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2029967604] [2023-02-14 13:51:20,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2029967604] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 13:51:20,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1280227704] [2023-02-14 13:51:20,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 13:51:20,041 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-02-14 13:51:20,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-02-14 13:51:20,042 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) [2023-02-14 13:51:20,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2023-02-14 13:51:21,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:51:21,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 784 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-14 13:51:21,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 13:51:22,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 13:51:22,146 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 [2023-02-14 13:51:22,198 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-02-14 13:51:22,198 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 13:51:22,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1280227704] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 13:51:22,402 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-14 13:51:22,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2023-02-14 13:51:22,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517232035] [2023-02-14 13:51:22,403 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-14 13:51:22,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-14 13:51:22,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 13:51:22,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-14 13:51:22,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=66, Unknown=1, NotChecked=0, Total=90 [2023-02-14 13:51:22,404 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) [2023-02-14 13:51:24,424 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 [] [2023-02-14 13:51:26,427 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 [] [2023-02-14 13:51:29,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 13:51:29,729 INFO L93 Difference]: Finished difference Result 1942 states and 2503 transitions. [2023-02-14 13:51:29,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-14 13:51:29,730 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 [2023-02-14 13:51:29,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 13:51:29,735 INFO L225 Difference]: With dead ends: 1942 [2023-02-14 13:51:29,735 INFO L226 Difference]: Without dead ends: 1942 [2023-02-14 13:51:29,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 171 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=50, Invalid=105, Unknown=1, NotChecked=0, Total=156 [2023-02-14 13:51:29,736 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 [2023-02-14 13:51:29,736 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] [2023-02-14 13:51:29,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1942 states. [2023-02-14 13:51:29,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1942 to 1696. [2023-02-14 13:51:29,755 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) [2023-02-14 13:51:29,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1696 states to 1696 states and 2475 transitions. [2023-02-14 13:51:29,758 INFO L78 Accepts]: Start accepts. Automaton has 1696 states and 2475 transitions. Word has length 76 [2023-02-14 13:51:29,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 13:51:29,759 INFO L495 AbstractCegarLoop]: Abstraction has 1696 states and 2475 transitions. [2023-02-14 13:51:29,759 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) [2023-02-14 13:51:29,759 INFO L276 IsEmpty]: Start isEmpty. Operand 1696 states and 2475 transitions. [2023-02-14 13:51:29,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-02-14 13:51:29,759 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 13:51:29,759 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] [2023-02-14 13:51:29,779 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2023-02-14 13:51:29,984 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 (19)] Ended with exit code 0 [2023-02-14 13:51:30,172 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 [2023-02-14 13:51:30,172 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)] === [2023-02-14 13:51:30,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 13:51:30,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1356949500, now seen corresponding path program 1 times [2023-02-14 13:51:30,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 13:51:30,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [55896796] [2023-02-14 13:51:30,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 13:51:30,174 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 [2023-02-14 13:51:30,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 13:51:30,175 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) [2023-02-14 13:51:30,177 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 [2023-02-14 13:51:30,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:51:30,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 760 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-14 13:51:30,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 13:51:30,676 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2023-02-14 13:51:30,676 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 13:51:30,676 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 13:51:30,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [55896796] [2023-02-14 13:51:30,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [55896796] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 13:51:30,676 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 13:51:30,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-14 13:51:30,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523213744] [2023-02-14 13:51:30,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 13:51:30,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-14 13:51:30,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 13:51:30,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-14 13:51:30,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-14 13:51:30,677 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) [2023-02-14 13:51:30,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 13:51:30,710 INFO L93 Difference]: Finished difference Result 1336 states and 1884 transitions. [2023-02-14 13:51:30,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-14 13:51:30,710 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 [2023-02-14 13:51:30,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 13:51:30,714 INFO L225 Difference]: With dead ends: 1336 [2023-02-14 13:51:30,714 INFO L226 Difference]: Without dead ends: 1331 [2023-02-14 13:51:30,714 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 [2023-02-14 13:51:30,715 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 [2023-02-14 13:51:30,715 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] [2023-02-14 13:51:30,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1331 states. [2023-02-14 13:51:30,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1331 to 1331. [2023-02-14 13:51:30,751 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) [2023-02-14 13:51:30,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1331 states to 1331 states and 1878 transitions. [2023-02-14 13:51:30,754 INFO L78 Accepts]: Start accepts. Automaton has 1331 states and 1878 transitions. Word has length 81 [2023-02-14 13:51:30,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 13:51:30,754 INFO L495 AbstractCegarLoop]: Abstraction has 1331 states and 1878 transitions. [2023-02-14 13:51:30,754 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) [2023-02-14 13:51:30,755 INFO L276 IsEmpty]: Start isEmpty. Operand 1331 states and 1878 transitions. [2023-02-14 13:51:30,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-02-14 13:51:30,756 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 13:51:30,756 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] [2023-02-14 13:51:30,770 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 [2023-02-14 13:51:30,968 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 [2023-02-14 13:51:30,969 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)] === [2023-02-14 13:51:30,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 13:51:30,969 INFO L85 PathProgramCache]: Analyzing trace with hash 986823980, now seen corresponding path program 1 times [2023-02-14 13:51:30,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 13:51:30,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [525195546] [2023-02-14 13:51:30,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 13:51:30,970 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 [2023-02-14 13:51:30,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 13:51:30,971 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) [2023-02-14 13:51:30,972 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 [2023-02-14 13:51:32,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:51:32,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 840 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-14 13:51:32,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 13:51:32,335 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-02-14 13:51:32,336 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 [2023-02-14 13:51:32,371 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 [2023-02-14 13:51:32,411 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2023-02-14 13:51:32,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 13:51:32,479 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 13:51:32,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [525195546] [2023-02-14 13:51:32,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [525195546] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 13:51:32,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2961735] [2023-02-14 13:51:32,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 13:51:32,480 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-02-14 13:51:32,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-02-14 13:51:32,481 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) [2023-02-14 13:51:32,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2023-02-14 13:51:33,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:51:34,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 840 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-14 13:51:34,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 13:51:34,410 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-02-14 13:51:34,410 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 [2023-02-14 13:51:34,479 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 [2023-02-14 13:51:34,553 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2023-02-14 13:51:34,553 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 13:51:34,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2961735] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 13:51:34,600 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-14 13:51:34,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2023-02-14 13:51:34,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578161360] [2023-02-14 13:51:34,600 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-14 13:51:34,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-14 13:51:34,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 13:51:34,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-14 13:51:34,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-02-14 13:51:34,601 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) [2023-02-14 13:51:36,619 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 [] [2023-02-14 13:51:38,623 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-14 13:51:40,627 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-14 13:51:42,631 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-14 13:51:44,637 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-14 13:51:46,641 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 [] [2023-02-14 13:51:49,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 13:51:49,537 INFO L93 Difference]: Finished difference Result 1506 states and 1890 transitions. [2023-02-14 13:51:49,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-14 13:51:49,537 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 [2023-02-14 13:51:49,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 13:51:49,541 INFO L225 Difference]: With dead ends: 1506 [2023-02-14 13:51:49,541 INFO L226 Difference]: Without dead ends: 1506 [2023-02-14 13:51:49,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 173 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2023-02-14 13:51:49,542 INFO L413 NwaCegarLoop]: 700 mSDtfsCounter, 735 mSDsluCounter, 3860 mSDsCounter, 0 mSdLazyCounter, 2795 mSolverCounterSat, 4 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.5s 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, 14.9s IncrementalHoareTripleChecker+Time [2023-02-14 13:51:49,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [736 Valid, 4560 Invalid, 2805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2795 Invalid, 6 Unknown, 0 Unchecked, 14.9s Time] [2023-02-14 13:51:49,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1506 states. [2023-02-14 13:51:49,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1506 to 1329. [2023-02-14 13:51:49,555 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) [2023-02-14 13:51:49,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1329 states to 1329 states and 1876 transitions. [2023-02-14 13:51:49,557 INFO L78 Accepts]: Start accepts. Automaton has 1329 states and 1876 transitions. Word has length 82 [2023-02-14 13:51:49,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 13:51:49,557 INFO L495 AbstractCegarLoop]: Abstraction has 1329 states and 1876 transitions. [2023-02-14 13:51:49,557 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) [2023-02-14 13:51:49,557 INFO L276 IsEmpty]: Start isEmpty. Operand 1329 states and 1876 transitions. [2023-02-14 13:51:49,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-02-14 13:51:49,560 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 13:51:49,560 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] [2023-02-14 13:51:49,575 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2023-02-14 13:51:49,791 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 [2023-02-14 13:51:49,975 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 [2023-02-14 13:51:49,975 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)] === [2023-02-14 13:51:49,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 13:51:49,975 INFO L85 PathProgramCache]: Analyzing trace with hash 986823981, now seen corresponding path program 1 times [2023-02-14 13:51:49,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 13:51:49,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1606425635] [2023-02-14 13:51:49,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 13:51:49,976 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 [2023-02-14 13:51:49,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 13:51:49,977 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) [2023-02-14 13:51:49,978 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 [2023-02-14 13:51:51,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:51:51,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 840 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-14 13:51:51,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 13:51:51,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 13:51:51,467 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 [2023-02-14 13:51:51,556 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-02-14 13:51:51,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 13:51:51,959 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 13:51:51,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1606425635] [2023-02-14 13:51:51,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1606425635] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 13:51:51,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [395599736] [2023-02-14 13:51:51,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 13:51:51,960 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-02-14 13:51:51,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-02-14 13:51:51,961 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) [2023-02-14 13:51:51,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2023-02-14 13:51:53,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:51:53,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 840 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-14 13:51:53,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 13:51:53,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 13:51:53,942 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 [2023-02-14 13:51:54,011 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-02-14 13:51:54,011 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 13:51:54,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [395599736] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 13:51:54,184 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-14 13:51:54,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2023-02-14 13:51:54,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095105331] [2023-02-14 13:51:54,184 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-14 13:51:54,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-14 13:51:54,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 13:51:54,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-14 13:51:54,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-02-14 13:51:54,187 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) [2023-02-14 13:51:56,210 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 [] [2023-02-14 13:51:58,215 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 [] [2023-02-14 13:52:00,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 13:52:00,684 INFO L93 Difference]: Finished difference Result 1573 states and 1902 transitions. [2023-02-14 13:52:00,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-14 13:52:00,684 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 [2023-02-14 13:52:00,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 13:52:00,688 INFO L225 Difference]: With dead ends: 1573 [2023-02-14 13:52:00,688 INFO L226 Difference]: Without dead ends: 1573 [2023-02-14 13:52:00,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 195 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2023-02-14 13:52:00,689 INFO L413 NwaCegarLoop]: 616 mSDtfsCounter, 1480 mSDsluCounter, 1385 mSDsCounter, 0 mSdLazyCounter, 1681 mSolverCounterSat, 135 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s 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, 6.4s IncrementalHoareTripleChecker+Time [2023-02-14 13:52:00,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1481 Valid, 2001 Invalid, 1818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 1681 Invalid, 2 Unknown, 0 Unchecked, 6.4s Time] [2023-02-14 13:52:00,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1573 states. [2023-02-14 13:52:00,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1573 to 1327. [2023-02-14 13:52:00,701 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) [2023-02-14 13:52:00,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1327 states to 1327 states and 1874 transitions. [2023-02-14 13:52:00,703 INFO L78 Accepts]: Start accepts. Automaton has 1327 states and 1874 transitions. Word has length 82 [2023-02-14 13:52:00,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 13:52:00,703 INFO L495 AbstractCegarLoop]: Abstraction has 1327 states and 1874 transitions. [2023-02-14 13:52:00,703 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) [2023-02-14 13:52:00,703 INFO L276 IsEmpty]: Start isEmpty. Operand 1327 states and 1874 transitions. [2023-02-14 13:52:00,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-02-14 13:52:00,704 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 13:52:00,704 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] [2023-02-14 13:52:00,720 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 [2023-02-14 13:52:00,929 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (25)] Ended with exit code 0 [2023-02-14 13:52:01,117 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 [2023-02-14 13:52:01,118 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)] === [2023-02-14 13:52:01,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 13:52:01,118 INFO L85 PathProgramCache]: Analyzing trace with hash -3613151, now seen corresponding path program 1 times [2023-02-14 13:52:01,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 13:52:01,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [119027492] [2023-02-14 13:52:01,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 13:52:01,119 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 [2023-02-14 13:52:01,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 13:52:01,120 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) [2023-02-14 13:52:01,120 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 [2023-02-14 13:52:02,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:52:02,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 893 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-14 13:52:02,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 13:52:02,641 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-02-14 13:52:02,642 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 [2023-02-14 13:52:02,674 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 [2023-02-14 13:52:02,716 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2023-02-14 13:52:02,716 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 13:52:02,716 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 13:52:02,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [119027492] [2023-02-14 13:52:02,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [119027492] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 13:52:02,716 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 13:52:02,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-14 13:52:02,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017541397] [2023-02-14 13:52:02,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 13:52:02,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-14 13:52:02,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 13:52:02,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-14 13:52:02,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-14 13:52:02,717 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) [2023-02-14 13:52:04,735 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 [] [2023-02-14 13:52:05,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 13:52:05,952 INFO L93 Difference]: Finished difference Result 1502 states and 1886 transitions. [2023-02-14 13:52:05,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-14 13:52:05,953 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 [2023-02-14 13:52:05,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 13:52:05,956 INFO L225 Difference]: With dead ends: 1502 [2023-02-14 13:52:05,956 INFO L226 Difference]: Without dead ends: 1502 [2023-02-14 13:52:05,956 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 [2023-02-14 13:52:05,957 INFO L413 NwaCegarLoop]: 698 mSDtfsCounter, 717 mSDsluCounter, 989 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s 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, 3.2s IncrementalHoareTripleChecker+Time [2023-02-14 13:52:05,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [717 Valid, 1687 Invalid, 759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 754 Invalid, 1 Unknown, 0 Unchecked, 3.2s Time] [2023-02-14 13:52:05,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1502 states. [2023-02-14 13:52:05,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1502 to 1325. [2023-02-14 13:52:05,968 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) [2023-02-14 13:52:05,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1325 states to 1325 states and 1872 transitions. [2023-02-14 13:52:05,970 INFO L78 Accepts]: Start accepts. Automaton has 1325 states and 1872 transitions. Word has length 88 [2023-02-14 13:52:05,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 13:52:05,971 INFO L495 AbstractCegarLoop]: Abstraction has 1325 states and 1872 transitions. [2023-02-14 13:52:05,971 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) [2023-02-14 13:52:05,971 INFO L276 IsEmpty]: Start isEmpty. Operand 1325 states and 1872 transitions. [2023-02-14 13:52:05,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-02-14 13:52:05,971 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 13:52:05,971 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] [2023-02-14 13:52:05,986 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 [2023-02-14 13:52:06,186 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 [2023-02-14 13:52:06,186 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)] === [2023-02-14 13:52:06,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 13:52:06,186 INFO L85 PathProgramCache]: Analyzing trace with hash -3613150, now seen corresponding path program 1 times [2023-02-14 13:52:06,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 13:52:06,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1287750867] [2023-02-14 13:52:06,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 13:52:06,187 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 [2023-02-14 13:52:06,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 13:52:06,188 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) [2023-02-14 13:52:06,188 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 [2023-02-14 13:52:07,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:52:07,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 893 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-14 13:52:07,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 13:52:08,084 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-02-14 13:52:08,084 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 [2023-02-14 13:52:08,240 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2023-02-14 13:52:08,240 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 13:52:08,240 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 13:52:08,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1287750867] [2023-02-14 13:52:08,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1287750867] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 13:52:08,240 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 13:52:08,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-14 13:52:08,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666559461] [2023-02-14 13:52:08,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 13:52:08,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-14 13:52:08,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 13:52:08,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-14 13:52:08,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-14 13:52:08,242 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) [2023-02-14 13:52:10,269 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-14 13:52:11,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 13:52:11,456 INFO L93 Difference]: Finished difference Result 1376 states and 1879 transitions. [2023-02-14 13:52:11,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-14 13:52:11,456 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 [2023-02-14 13:52:11,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 13:52:11,459 INFO L225 Difference]: With dead ends: 1376 [2023-02-14 13:52:11,459 INFO L226 Difference]: Without dead ends: 1376 [2023-02-14 13:52:11,459 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 [2023-02-14 13:52:11,467 INFO L413 NwaCegarLoop]: 763 mSDtfsCounter, 123 mSDsluCounter, 1085 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s 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, 3.2s IncrementalHoareTripleChecker+Time [2023-02-14 13:52:11,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 1848 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 516 Invalid, 1 Unknown, 0 Unchecked, 3.2s Time] [2023-02-14 13:52:11,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1376 states. [2023-02-14 13:52:11,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1376 to 1323. [2023-02-14 13:52:11,488 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) [2023-02-14 13:52:11,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1323 states to 1323 states and 1869 transitions. [2023-02-14 13:52:11,490 INFO L78 Accepts]: Start accepts. Automaton has 1323 states and 1869 transitions. Word has length 88 [2023-02-14 13:52:11,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 13:52:11,490 INFO L495 AbstractCegarLoop]: Abstraction has 1323 states and 1869 transitions. [2023-02-14 13:52:11,490 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) [2023-02-14 13:52:11,491 INFO L276 IsEmpty]: Start isEmpty. Operand 1323 states and 1869 transitions. [2023-02-14 13:52:11,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-02-14 13:52:11,491 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 13:52:11,491 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] [2023-02-14 13:52:11,510 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 [2023-02-14 13:52:11,708 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 [2023-02-14 13:52:11,709 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)] === [2023-02-14 13:52:11,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 13:52:11,709 INFO L85 PathProgramCache]: Analyzing trace with hash -112007323, now seen corresponding path program 1 times [2023-02-14 13:52:11,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 13:52:11,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1334016449] [2023-02-14 13:52:11,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 13:52:11,710 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 [2023-02-14 13:52:11,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 13:52:11,711 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) [2023-02-14 13:52:11,712 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 [2023-02-14 13:52:13,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:52:13,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 906 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-14 13:52:13,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 13:52:13,269 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-02-14 13:52:13,269 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 [2023-02-14 13:52:13,304 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 [2023-02-14 13:52:13,357 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2023-02-14 13:52:13,357 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 13:52:13,357 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 13:52:13,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1334016449] [2023-02-14 13:52:13,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1334016449] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 13:52:13,357 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 13:52:13,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 13:52:13,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91085519] [2023-02-14 13:52:13,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 13:52:13,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-14 13:52:13,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 13:52:13,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-14 13:52:13,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-14 13:52:13,358 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) [2023-02-14 13:52:15,376 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 [] [2023-02-14 13:52:17,380 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 [] [2023-02-14 13:52:18,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 13:52:18,882 INFO L93 Difference]: Finished difference Result 1498 states and 1881 transitions. [2023-02-14 13:52:18,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-14 13:52:18,882 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 [2023-02-14 13:52:18,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 13:52:18,885 INFO L225 Difference]: With dead ends: 1498 [2023-02-14 13:52:18,885 INFO L226 Difference]: Without dead ends: 1498 [2023-02-14 13:52:18,885 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 [2023-02-14 13:52:18,885 INFO L413 NwaCegarLoop]: 668 mSDtfsCounter, 1076 mSDsluCounter, 1341 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 58 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s 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, 5.5s IncrementalHoareTripleChecker+Time [2023-02-14 13:52:18,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1076 Valid, 2009 Invalid, 1141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 1081 Invalid, 2 Unknown, 0 Unchecked, 5.5s Time] [2023-02-14 13:52:18,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1498 states. [2023-02-14 13:52:18,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1498 to 1321. [2023-02-14 13:52:18,896 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) [2023-02-14 13:52:18,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1321 states to 1321 states and 1867 transitions. [2023-02-14 13:52:18,898 INFO L78 Accepts]: Start accepts. Automaton has 1321 states and 1867 transitions. Word has length 89 [2023-02-14 13:52:18,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 13:52:18,899 INFO L495 AbstractCegarLoop]: Abstraction has 1321 states and 1867 transitions. [2023-02-14 13:52:18,899 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) [2023-02-14 13:52:18,899 INFO L276 IsEmpty]: Start isEmpty. Operand 1321 states and 1867 transitions. [2023-02-14 13:52:18,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-02-14 13:52:18,899 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 13:52:18,899 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] [2023-02-14 13:52:18,915 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 (28)] Forceful destruction successful, exit code 0 [2023-02-14 13:52:19,115 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 [2023-02-14 13:52:19,115 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)] === [2023-02-14 13:52:19,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 13:52:19,115 INFO L85 PathProgramCache]: Analyzing trace with hash -112007322, now seen corresponding path program 1 times [2023-02-14 13:52:19,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 13:52:19,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [476341331] [2023-02-14 13:52:19,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 13:52:19,116 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 [2023-02-14 13:52:19,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 13:52:19,117 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) [2023-02-14 13:52:19,118 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 [2023-02-14 13:52:20,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:52:20,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 906 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-14 13:52:20,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 13:52:21,045 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 13:52:21,046 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 [2023-02-14 13:52:21,161 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2023-02-14 13:52:21,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 13:52:21,463 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 13:52:21,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [476341331] [2023-02-14 13:52:21,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [476341331] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 13:52:21,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1557075301] [2023-02-14 13:52:21,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 13:52:21,463 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-02-14 13:52:21,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-02-14 13:52:21,464 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) [2023-02-14 13:52:21,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (30)] Waiting until timeout for monitored process [2023-02-14 13:52:23,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:52:23,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 906 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-14 13:52:23,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 13:52:23,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 13:52:23,744 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 [2023-02-14 13:52:23,839 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2023-02-14 13:52:23,839 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 13:52:26,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1557075301] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 13:52:26,023 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-14 13:52:26,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2023-02-14 13:52:26,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122330380] [2023-02-14 13:52:26,023 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-14 13:52:26,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-14 13:52:26,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 13:52:26,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-14 13:52:26,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-02-14 13:52:26,024 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) [2023-02-14 13:52:28,041 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 [] [2023-02-14 13:52:30,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 13:52:30,239 INFO L93 Difference]: Finished difference Result 1565 states and 1893 transitions. [2023-02-14 13:52:30,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-14 13:52:30,239 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 [2023-02-14 13:52:30,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 13:52:30,242 INFO L225 Difference]: With dead ends: 1565 [2023-02-14 13:52:30,242 INFO L226 Difference]: Without dead ends: 1565 [2023-02-14 13:52:30,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 225 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-02-14 13:52:30,242 INFO L413 NwaCegarLoop]: 579 mSDtfsCounter, 1368 mSDsluCounter, 1286 mSDsCounter, 0 mSdLazyCounter, 1251 mSolverCounterSat, 78 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s 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, 4.2s IncrementalHoareTripleChecker+Time [2023-02-14 13:52:30,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1368 Valid, 1865 Invalid, 1330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1251 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2023-02-14 13:52:30,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1565 states. [2023-02-14 13:52:30,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1565 to 1319. [2023-02-14 13:52:30,257 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) [2023-02-14 13:52:30,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 1865 transitions. [2023-02-14 13:52:30,259 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 1865 transitions. Word has length 89 [2023-02-14 13:52:30,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 13:52:30,259 INFO L495 AbstractCegarLoop]: Abstraction has 1319 states and 1865 transitions. [2023-02-14 13:52:30,259 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) [2023-02-14 13:52:30,259 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 1865 transitions. [2023-02-14 13:52:30,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-02-14 13:52:30,260 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 13:52:30,260 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] [2023-02-14 13:52:30,275 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 [2023-02-14 13:52:30,482 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (30)] Forceful destruction successful, exit code 0 [2023-02-14 13:52:30,669 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 [2023-02-14 13:52:30,669 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)] === [2023-02-14 13:52:30,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 13:52:30,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1939903835, now seen corresponding path program 1 times [2023-02-14 13:52:30,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 13:52:30,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [487148206] [2023-02-14 13:52:30,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 13:52:30,670 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 [2023-02-14 13:52:30,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 13:52:30,671 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) [2023-02-14 13:52:30,671 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 [2023-02-14 13:52:31,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:52:31,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 948 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-14 13:52:31,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 13:52:31,404 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2023-02-14 13:52:31,404 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 13:52:31,404 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 13:52:31,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [487148206] [2023-02-14 13:52:31,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [487148206] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 13:52:31,404 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 13:52:31,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-14 13:52:31,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88233792] [2023-02-14 13:52:31,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 13:52:31,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-14 13:52:31,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 13:52:31,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-14 13:52:31,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-14 13:52:31,405 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) [2023-02-14 13:52:33,422 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-14 13:52:35,428 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-14 13:52:37,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 13:52:37,303 INFO L93 Difference]: Finished difference Result 1494 states and 1877 transitions. [2023-02-14 13:52:37,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-14 13:52:37,304 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 [2023-02-14 13:52:37,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 13:52:37,306 INFO L225 Difference]: With dead ends: 1494 [2023-02-14 13:52:37,306 INFO L226 Difference]: Without dead ends: 1494 [2023-02-14 13:52:37,306 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 [2023-02-14 13:52:37,306 INFO L413 NwaCegarLoop]: 692 mSDtfsCounter, 790 mSDsluCounter, 1496 mSDsCounter, 0 mSdLazyCounter, 1094 mSolverCounterSat, 10 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 791 SdHoareTripleChecker+Valid, 2188 SdHoareTripleChecker+Invalid, 1106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1094 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-02-14 13:52:37,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [791 Valid, 2188 Invalid, 1106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1094 Invalid, 2 Unknown, 0 Unchecked, 5.8s Time] [2023-02-14 13:52:37,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1494 states. [2023-02-14 13:52:37,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1494 to 1317. [2023-02-14 13:52:37,326 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) [2023-02-14 13:52:37,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1317 states to 1317 states and 1863 transitions. [2023-02-14 13:52:37,328 INFO L78 Accepts]: Start accepts. Automaton has 1317 states and 1863 transitions. Word has length 96 [2023-02-14 13:52:37,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 13:52:37,328 INFO L495 AbstractCegarLoop]: Abstraction has 1317 states and 1863 transitions. [2023-02-14 13:52:37,328 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) [2023-02-14 13:52:37,328 INFO L276 IsEmpty]: Start isEmpty. Operand 1317 states and 1863 transitions. [2023-02-14 13:52:37,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-02-14 13:52:37,329 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 13:52:37,329 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] [2023-02-14 13:52:37,345 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 [2023-02-14 13:52:37,543 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 [2023-02-14 13:52:37,543 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)] === [2023-02-14 13:52:37,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 13:52:37,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1939903834, now seen corresponding path program 1 times [2023-02-14 13:52:37,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 13:52:37,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1740111223] [2023-02-14 13:52:37,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 13:52:37,545 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 [2023-02-14 13:52:37,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 13:52:37,546 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) [2023-02-14 13:52:37,546 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 [2023-02-14 13:52:38,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:52:39,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 948 conjuncts, 13 conjunts are in the unsatisfiable core [2023-02-14 13:52:39,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 13:52:39,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 13:52:39,658 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 [2023-02-14 13:52:39,897 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2023-02-14 13:52:39,897 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 13:52:42,419 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 13:52:42,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1740111223] [2023-02-14 13:52:42,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1740111223] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 13:52:42,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1155113593] [2023-02-14 13:52:42,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 13:52:42,419 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-02-14 13:52:42,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-02-14 13:52:42,420 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) [2023-02-14 13:52:42,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (33)] Waiting until timeout for monitored process [2023-02-14 13:52:44,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:52:44,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 948 conjuncts, 14 conjunts are in the unsatisfiable core [2023-02-14 13:52:44,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 13:52:44,841 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-02-14 13:52:44,841 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 [2023-02-14 13:52:44,934 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 [2023-02-14 13:52:45,235 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-02-14 13:52:45,235 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 [2023-02-14 13:52:45,266 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2023-02-14 13:52:45,267 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 13:52:45,547 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 [2023-02-14 13:52:46,086 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2023-02-14 13:52:46,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1155113593] provided 1 perfect and 1 imperfect interpolant sequences [2023-02-14 13:52:46,086 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-02-14 13:52:46,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [5, 8] total 17 [2023-02-14 13:52:46,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983765386] [2023-02-14 13:52:46,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 13:52:46,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-14 13:52:46,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 13:52:46,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-14 13:52:46,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2023-02-14 13:52:46,087 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) [2023-02-14 13:52:48,104 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-14 13:52:50,109 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-14 13:52:52,113 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 [] [2023-02-14 13:52:58,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 13:52:58,238 INFO L93 Difference]: Finished difference Result 1369 states and 1872 transitions. [2023-02-14 13:52:58,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-14 13:52:58,239 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 96 [2023-02-14 13:52:58,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 13:52:58,243 INFO L225 Difference]: With dead ends: 1369 [2023-02-14 13:52:58,243 INFO L226 Difference]: Without dead ends: 1369 [2023-02-14 13:52:58,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 302 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2023-02-14 13:52:58,244 INFO L413 NwaCegarLoop]: 744 mSDtfsCounter, 297 mSDsluCounter, 3063 mSDsCounter, 0 mSdLazyCounter, 1703 mSolverCounterSat, 14 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 3807 SdHoareTripleChecker+Invalid, 1720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1703 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.0s IncrementalHoareTripleChecker+Time [2023-02-14 13:52:58,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 3807 Invalid, 1720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1703 Invalid, 3 Unknown, 0 Unchecked, 12.0s Time] [2023-02-14 13:52:58,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1369 states. [2023-02-14 13:52:58,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1369 to 1316. [2023-02-14 13:52:58,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1316 states, 857 states have (on average 1.7246207701283547) internal successors, (1478), 1054 states have internal predecessors, (1478), 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) [2023-02-14 13:52:58,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1316 states to 1316 states and 1862 transitions. [2023-02-14 13:52:58,255 INFO L78 Accepts]: Start accepts. Automaton has 1316 states and 1862 transitions. Word has length 96 [2023-02-14 13:52:58,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 13:52:58,255 INFO L495 AbstractCegarLoop]: Abstraction has 1316 states and 1862 transitions. [2023-02-14 13:52:58,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2023-02-14 13:52:58,255 INFO L276 IsEmpty]: Start isEmpty. Operand 1316 states and 1862 transitions. [2023-02-14 13:52:58,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-02-14 13:52:58,256 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 13:52:58,257 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, 1] [2023-02-14 13:52:58,273 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (33)] Forceful destruction successful, exit code 0 [2023-02-14 13:52:58,488 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 (32)] Forceful destruction successful, exit code 0 [2023-02-14 13:52:58,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,32 /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 [2023-02-14 13:52:58,673 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting cdev_addErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 202 more)] === [2023-02-14 13:52:58,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 13:52:58,673 INFO L85 PathProgramCache]: Analyzing trace with hash -7475738, now seen corresponding path program 1 times [2023-02-14 13:52:58,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 13:52:58,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1473626803] [2023-02-14 13:52:58,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 13:52:58,674 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 [2023-02-14 13:52:58,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 13:52:58,675 INFO L229 MonitoredProcess]: Starting monitored process 34 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) [2023-02-14 13:52:58,675 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 (34)] Waiting until timeout for monitored process [2023-02-14 13:52:59,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:52:59,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 970 conjuncts, 13 conjunts are in the unsatisfiable core [2023-02-14 13:52:59,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 13:53:00,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 13:53:00,190 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 [2023-02-14 13:53:00,395 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2023-02-14 13:53:00,395 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 13:53:00,879 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 13:53:00,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1473626803] [2023-02-14 13:53:00,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1473626803] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 13:53:00,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1400376229] [2023-02-14 13:53:00,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 13:53:00,879 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-02-14 13:53:00,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-02-14 13:53:00,880 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-02-14 13:53:00,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (35)] Waiting until timeout for monitored process [2023-02-14 13:53:03,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 13:53:03,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 970 conjuncts, 14 conjunts are in the unsatisfiable core [2023-02-14 13:53:03,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 13:53:03,505 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-02-14 13:53:03,505 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 [2023-02-14 13:53:03,607 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 [2023-02-14 13:53:03,947 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-02-14 13:53:03,947 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 [2023-02-14 13:53:03,983 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2023-02-14 13:53:03,983 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 13:53:04,273 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 [2023-02-14 13:53:04,825 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2023-02-14 13:53:04,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1400376229] provided 1 perfect and 1 imperfect interpolant sequences [2023-02-14 13:53:04,825 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-02-14 13:53:04,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [5, 8] total 17 [2023-02-14 13:53:04,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059827038] [2023-02-14 13:53:04,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 13:53:04,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-14 13:53:04,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 13:53:04,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-14 13:53:04,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2023-02-14 13:53:04,826 INFO L87 Difference]: Start difference. First operand 1316 states and 1862 transitions. Second operand has 9 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 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) [2023-02-14 13:53:06,843 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 [] [2023-02-14 13:53:08,846 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 []