./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_pthread_mutex_unlock.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 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_pthread_mutex_unlock.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 4aba0d481dbad425b1cb3ce4949768f5bfa91a070fed6a0c2b192c70ad920fc2 --- Real Ultimate output --- This is Ultimate 0.2.2-?-2329fc7 [2023-02-14 02:16:13,112 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-14 02:16:13,115 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-14 02:16:13,158 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-14 02:16:13,158 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-14 02:16:13,161 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-14 02:16:13,163 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-14 02:16:13,165 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-14 02:16:13,168 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-14 02:16:13,172 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-14 02:16:13,174 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-14 02:16:13,176 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-14 02:16:13,176 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-14 02:16:13,178 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-14 02:16:13,179 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-14 02:16:13,180 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-14 02:16:13,181 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-14 02:16:13,183 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-14 02:16:13,184 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-14 02:16:13,189 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-14 02:16:13,190 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-14 02:16:13,190 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-14 02:16:13,191 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-14 02:16:13,192 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-14 02:16:13,200 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-14 02:16:13,200 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-14 02:16:13,200 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-14 02:16:13,202 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-14 02:16:13,203 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-14 02:16:13,204 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-14 02:16:13,204 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-14 02:16:13,205 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-14 02:16:13,207 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-14 02:16:13,207 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-14 02:16:13,208 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-14 02:16:13,208 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-14 02:16:13,209 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-14 02:16:13,209 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-14 02:16:13,209 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-14 02:16:13,210 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-14 02:16:13,211 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-14 02:16:13,212 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-02-14 02:16:13,236 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-14 02:16:13,237 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-14 02:16:13,237 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-14 02:16:13,237 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-14 02:16:13,238 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-14 02:16:13,238 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-14 02:16:13,238 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-14 02:16:13,238 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-14 02:16:13,239 INFO L138 SettingsManager]: * Use SBE=true [2023-02-14 02:16:13,239 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-14 02:16:13,239 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-14 02:16:13,240 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-14 02:16:13,240 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-14 02:16:13,240 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-14 02:16:13,240 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-14 02:16:13,240 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-14 02:16:13,240 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-14 02:16:13,240 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-14 02:16:13,240 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-14 02:16:13,241 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-14 02:16:13,241 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-14 02:16:13,241 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-14 02:16:13,241 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-14 02:16:13,241 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-14 02:16:13,241 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-14 02:16:13,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 02:16:13,242 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-14 02:16:13,242 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-14 02:16:13,242 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-14 02:16:13,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-14 02:16:13,242 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-14 02:16:13,242 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-14 02:16:13,243 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-14 02:16:13,243 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-14 02:16:13,243 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4aba0d481dbad425b1cb3ce4949768f5bfa91a070fed6a0c2b192c70ad920fc2 [2023-02-14 02:16:13,465 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-14 02:16:13,497 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-14 02:16:13,499 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-14 02:16:13,500 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-14 02:16:13,500 INFO L275 PluginConnector]: CDTParser initialized [2023-02-14 02:16:13,501 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_pthread_mutex_unlock.i [2023-02-14 02:16:14,661 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-14 02:16:15,031 INFO L351 CDTParser]: Found 1 translation units. [2023-02-14 02:16:15,032 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_pthread_mutex_unlock.i [2023-02-14 02:16:15,055 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/885985214/b7155f298a5d4d28a7bfb6923f93a9b4/FLAGdad3956a8 [2023-02-14 02:16:15,278 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/885985214/b7155f298a5d4d28a7bfb6923f93a9b4 [2023-02-14 02:16:15,281 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-14 02:16:15,282 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-14 02:16:15,283 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-14 02:16:15,283 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-14 02:16:15,286 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-14 02:16:15,287 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 02:16:15" (1/1) ... [2023-02-14 02:16:15,287 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ce1282f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:16:15, skipping insertion in model container [2023-02-14 02:16:15,288 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 02:16:15" (1/1) ... [2023-02-14 02:16:15,294 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-14 02:16:15,364 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-14 02:16:15,534 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_pthread_mutex_unlock.i[472,485] [2023-02-14 02:16:16,069 WARN L623 FunctionHandler]: Unknown extern function misc_register [2023-02-14 02:16:16,070 WARN L623 FunctionHandler]: Unknown extern function register_reboot_notifier [2023-02-14 02:16:16,071 WARN L623 FunctionHandler]: Unknown extern function misc_deregister [2023-02-14 02:16:16,073 WARN L623 FunctionHandler]: Unknown extern function misc_deregister [2023-02-14 02:16:16,073 WARN L623 FunctionHandler]: Unknown extern function unregister_reboot_notifier [2023-02-14 02:16:16,159 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_nondet_sector_t [2023-02-14 02:16:16,247 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 02:16:16,278 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 02:16:16,278 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@23a5a040 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:16:16, skipping insertion in model container [2023-02-14 02:16:16,278 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-14 02:16:16,279 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-02-14 02:16:16,280 INFO L158 Benchmark]: Toolchain (without parser) took 997.62ms. Allocated memory is still 151.0MB. Free memory was 110.7MB in the beginning and 66.7MB in the end (delta: 44.0MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. [2023-02-14 02:16:16,280 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 151.0MB. Free memory is still 125.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-14 02:16:16,281 INFO L158 Benchmark]: CACSL2BoogieTranslator took 995.85ms. Allocated memory is still 151.0MB. Free memory was 110.7MB in the beginning and 66.7MB in the end (delta: 44.0MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. [2023-02-14 02:16:16,282 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 151.0MB. Free memory is still 125.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 995.85ms. Allocated memory is still 151.0MB. Free memory was 110.7MB in the beginning and 66.7MB in the end (delta: 44.0MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2977]: Unsupported Syntax Found a cast between two array/pointer types 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_pthread_mutex_unlock.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 4aba0d481dbad425b1cb3ce4949768f5bfa91a070fed6a0c2b192c70ad920fc2 --- Real Ultimate output --- This is Ultimate 0.2.2-?-2329fc7 [2023-02-14 02:16:18,164 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-14 02:16:18,165 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-14 02:16:18,183 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-14 02:16:18,184 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-14 02:16:18,186 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-14 02:16:18,187 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-14 02:16:18,189 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-14 02:16:18,192 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-14 02:16:18,193 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-14 02:16:18,194 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-14 02:16:18,195 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-14 02:16:18,196 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-14 02:16:18,198 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-14 02:16:18,199 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-14 02:16:18,210 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-14 02:16:18,210 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-14 02:16:18,211 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-14 02:16:18,212 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-14 02:16:18,214 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-14 02:16:18,214 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-14 02:16:18,215 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-14 02:16:18,216 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-14 02:16:18,216 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-14 02:16:18,218 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-14 02:16:18,219 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-14 02:16:18,219 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-14 02:16:18,219 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-14 02:16:18,220 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-14 02:16:18,220 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-14 02:16:18,221 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-14 02:16:18,221 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-14 02:16:18,222 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-14 02:16:18,222 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-14 02:16:18,223 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-14 02:16:18,223 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-14 02:16:18,224 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-14 02:16:18,224 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-14 02:16:18,224 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-14 02:16:18,225 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-14 02:16:18,225 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-14 02:16:18,226 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-02-14 02:16:18,242 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-14 02:16:18,242 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-14 02:16:18,243 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-14 02:16:18,243 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-14 02:16:18,244 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-14 02:16:18,244 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-14 02:16:18,245 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-14 02:16:18,245 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-14 02:16:18,245 INFO L138 SettingsManager]: * Use SBE=true [2023-02-14 02:16:18,246 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-14 02:16:18,246 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-14 02:16:18,246 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-14 02:16:18,247 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-14 02:16:18,247 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-14 02:16:18,247 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-14 02:16:18,247 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-14 02:16:18,247 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-14 02:16:18,247 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-14 02:16:18,247 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-14 02:16:18,248 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-14 02:16:18,248 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-02-14 02:16:18,248 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-02-14 02:16:18,248 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-14 02:16:18,248 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-14 02:16:18,249 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-14 02:16:18,249 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-14 02:16:18,249 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-14 02:16:18,249 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 02:16:18,249 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-14 02:16:18,249 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-14 02:16:18,250 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-02-14 02:16:18,250 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-02-14 02:16:18,250 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-14 02:16:18,250 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-14 02:16:18,250 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-14 02:16:18,250 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-02-14 02:16:18,251 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-14 02:16:18,251 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4aba0d481dbad425b1cb3ce4949768f5bfa91a070fed6a0c2b192c70ad920fc2 [2023-02-14 02:16:18,512 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-14 02:16:18,534 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-14 02:16:18,536 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-14 02:16:18,536 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-14 02:16:18,537 INFO L275 PluginConnector]: CDTParser initialized [2023-02-14 02:16:18,539 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_pthread_mutex_unlock.i [2023-02-14 02:16:19,739 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-14 02:16:20,147 INFO L351 CDTParser]: Found 1 translation units. [2023-02-14 02:16:20,148 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_pthread_mutex_unlock.i [2023-02-14 02:16:20,192 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76360cfa8/4ed7d6c46d3545e48f28f39e15a7bcc5/FLAG93137788a [2023-02-14 02:16:20,201 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76360cfa8/4ed7d6c46d3545e48f28f39e15a7bcc5 [2023-02-14 02:16:20,205 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-14 02:16:20,206 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-14 02:16:20,208 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-14 02:16:20,208 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-14 02:16:20,211 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-14 02:16:20,211 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 02:16:20" (1/1) ... [2023-02-14 02:16:20,212 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@584127cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:16:20, skipping insertion in model container [2023-02-14 02:16:20,212 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 02:16:20" (1/1) ... [2023-02-14 02:16:20,217 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-14 02:16:20,300 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-14 02:16:20,496 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_pthread_mutex_unlock.i[472,485] [2023-02-14 02:16:21,031 WARN L623 FunctionHandler]: Unknown extern function misc_register [2023-02-14 02:16:21,033 WARN L623 FunctionHandler]: Unknown extern function register_reboot_notifier [2023-02-14 02:16:21,036 WARN L623 FunctionHandler]: Unknown extern function misc_deregister [2023-02-14 02:16:21,038 WARN L623 FunctionHandler]: Unknown extern function misc_deregister [2023-02-14 02:16:21,038 WARN L623 FunctionHandler]: Unknown extern function unregister_reboot_notifier [2023-02-14 02:16:21,161 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_nondet_sector_t [2023-02-14 02:16:21,323 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 02:16:21,352 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-02-14 02:16:21,367 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-14 02:16:21,370 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_pthread_mutex_unlock.i[472,485] [2023-02-14 02:16:21,419 WARN L623 FunctionHandler]: Unknown extern function misc_register [2023-02-14 02:16:21,427 WARN L623 FunctionHandler]: Unknown extern function register_reboot_notifier [2023-02-14 02:16:21,428 WARN L623 FunctionHandler]: Unknown extern function misc_deregister [2023-02-14 02:16:21,430 WARN L623 FunctionHandler]: Unknown extern function misc_deregister [2023-02-14 02:16:21,430 WARN L623 FunctionHandler]: Unknown extern function unregister_reboot_notifier [2023-02-14 02:16:21,440 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_nondet_sector_t [2023-02-14 02:16:21,484 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 02:16:21,498 INFO L203 MainTranslator]: Completed pre-run [2023-02-14 02:16:21,506 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_pthread_mutex_unlock.i[472,485] [2023-02-14 02:16:21,540 WARN L623 FunctionHandler]: Unknown extern function misc_register [2023-02-14 02:16:21,542 WARN L623 FunctionHandler]: Unknown extern function register_reboot_notifier [2023-02-14 02:16:21,543 WARN L623 FunctionHandler]: Unknown extern function misc_deregister [2023-02-14 02:16:21,543 WARN L623 FunctionHandler]: Unknown extern function misc_deregister [2023-02-14 02:16:21,544 WARN L623 FunctionHandler]: Unknown extern function unregister_reboot_notifier [2023-02-14 02:16:21,601 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_nondet_sector_t [2023-02-14 02:16:21,671 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 02:16:21,779 INFO L208 MainTranslator]: Completed translation [2023-02-14 02:16:21,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:16:21 WrapperNode [2023-02-14 02:16:21,780 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-14 02:16:21,781 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-14 02:16:21,781 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-14 02:16:21,781 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-14 02:16:21,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:16:21" (1/1) ... [2023-02-14 02:16:21,845 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:16:21" (1/1) ... [2023-02-14 02:16:21,925 INFO L138 Inliner]: procedures = 482, calls = 840, calls flagged for inlining = 54, calls inlined = 37, statements flattened = 966 [2023-02-14 02:16:21,925 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-14 02:16:21,926 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-14 02:16:21,926 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-14 02:16:21,926 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-14 02:16:21,934 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:16:21" (1/1) ... [2023-02-14 02:16:21,934 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:16:21" (1/1) ... [2023-02-14 02:16:21,947 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:16:21" (1/1) ... [2023-02-14 02:16:21,948 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:16:21" (1/1) ... [2023-02-14 02:16:21,979 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:16:21" (1/1) ... [2023-02-14 02:16:21,994 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:16:21" (1/1) ... [2023-02-14 02:16:22,018 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:16:21" (1/1) ... [2023-02-14 02:16:22,023 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:16:21" (1/1) ... [2023-02-14 02:16:22,031 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-14 02:16:22,032 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-14 02:16:22,032 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-14 02:16:22,032 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-14 02:16:22,033 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:16:21" (1/1) ... [2023-02-14 02:16:22,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 02:16:22,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 02:16:22,062 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 02:16:22,085 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 02:16:22,102 INFO L130 BoogieDeclarations]: Found specification of procedure zf_timer_off [2023-02-14 02:16:22,102 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_timer_off [2023-02-14 02:16:22,103 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~C_UINT~X~C_ULONG~TO~C_INT [2023-02-14 02:16:22,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~C_UINT~X~C_ULONG~TO~C_INT [2023-02-14 02:16:22,103 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-02-14 02:16:22,103 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_atomic_begin [2023-02-14 02:16:22,103 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-02-14 02:16:22,103 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-02-14 02:16:22,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-14 02:16:22,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2023-02-14 02:16:22,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-02-14 02:16:22,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-02-14 02:16:22,104 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2023-02-14 02:16:22,104 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2023-02-14 02:16:22,104 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-02-14 02:16:22,104 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_atomic_end [2023-02-14 02:16:22,104 INFO L130 BoogieDeclarations]: Found specification of procedure zf_get_control [2023-02-14 02:16:22,104 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_get_control [2023-02-14 02:16:22,104 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2023-02-14 02:16:22,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2023-02-14 02:16:22,105 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-14 02:16:22,105 INFO L130 BoogieDeclarations]: Found specification of procedure request_region [2023-02-14 02:16:22,105 INFO L138 BoogieDeclarations]: Found implementation of procedure request_region [2023-02-14 02:16:22,105 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-14 02:16:22,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-14 02:16:22,105 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-02-14 02:16:22,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-02-14 02:16:22,105 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irqsave [2023-02-14 02:16:22,105 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irqsave [2023-02-14 02:16:22,106 INFO L130 BoogieDeclarations]: Found specification of procedure release_region [2023-02-14 02:16:22,106 INFO L138 BoogieDeclarations]: Found implementation of procedure release_region [2023-02-14 02:16:22,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-14 02:16:22,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-14 02:16:22,106 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_init [2023-02-14 02:16:22,106 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_init [2023-02-14 02:16:22,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2023-02-14 02:16:22,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-02-14 02:16:22,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2023-02-14 02:16:22,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-02-14 02:16:22,107 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-02-14 02:16:22,107 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-02-14 02:16:22,107 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2023-02-14 02:16:22,107 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2023-02-14 02:16:22,107 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-14 02:16:22,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-14 02:16:22,107 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2023-02-14 02:16:22,107 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2023-02-14 02:16:22,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2023-02-14 02:16:22,108 INFO L130 BoogieDeclarations]: Found specification of procedure cdev_add [2023-02-14 02:16:22,108 INFO L138 BoogieDeclarations]: Found implementation of procedure cdev_add [2023-02-14 02:16:22,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2023-02-14 02:16:22,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2023-02-14 02:16:22,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-02-14 02:16:22,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-02-14 02:16:22,108 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-02-14 02:16:22,108 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-02-14 02:16:22,108 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2023-02-14 02:16:22,109 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2023-02-14 02:16:22,109 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2023-02-14 02:16:22,109 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2023-02-14 02:16:22,109 INFO L130 BoogieDeclarations]: Found specification of procedure misc_deregister [2023-02-14 02:16:22,109 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_deregister [2023-02-14 02:16:22,109 INFO L130 BoogieDeclarations]: Found specification of procedure assert_context_process [2023-02-14 02:16:22,109 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_context_process [2023-02-14 02:16:22,109 INFO L130 BoogieDeclarations]: Found specification of procedure zf_set_control [2023-02-14 02:16:22,109 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_set_control [2023-02-14 02:16:22,109 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~C_ULONG~X~$Pointer$~TO~C_LONG [2023-02-14 02:16:22,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~C_ULONG~X~$Pointer$~TO~C_LONG [2023-02-14 02:16:22,133 INFO L130 BoogieDeclarations]: Found specification of procedure zf_readw [2023-02-14 02:16:22,133 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_readw [2023-02-14 02:16:22,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2023-02-14 02:16:22,134 INFO L130 BoogieDeclarations]: Found specification of procedure zf_ping [2023-02-14 02:16:22,134 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_ping [2023-02-14 02:16:22,134 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2023-02-14 02:16:22,134 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2023-02-14 02:16:22,134 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~C_ULONG~TO~VOID [2023-02-14 02:16:22,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~C_ULONG~TO~VOID [2023-02-14 02:16:22,448 INFO L235 CfgBuilder]: Building ICFG [2023-02-14 02:16:22,451 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-14 02:16:26,577 INFO L276 CfgBuilder]: Performing block encoding [2023-02-14 02:16:26,594 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-14 02:16:26,596 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2023-02-14 02:16:26,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 02:16:26 BoogieIcfgContainer [2023-02-14 02:16:26,600 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-14 02:16:26,603 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-14 02:16:26,603 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-14 02:16:26,605 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-14 02:16:26,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.02 02:16:20" (1/3) ... [2023-02-14 02:16:26,606 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34f7db31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 02:16:26, skipping insertion in model container [2023-02-14 02:16:26,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:16:21" (2/3) ... [2023-02-14 02:16:26,609 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34f7db31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 02:16:26, skipping insertion in model container [2023-02-14 02:16:26,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 02:16:26" (3/3) ... [2023-02-14 02:16:26,610 INFO L112 eAbstractionObserver]: Analyzing ICFG ddv_machzwd_pthread_mutex_unlock.i [2023-02-14 02:16:26,623 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-14 02:16:26,624 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 205 error locations. [2023-02-14 02:16:26,674 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-14 02:16:26,680 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;@2da2f3d5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-14 02:16:26,680 INFO L358 AbstractCegarLoop]: Starting to check reachability of 205 error locations. [2023-02-14 02:16:26,688 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 02:16:26,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-02-14 02:16:26,697 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:16:26,698 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-02-14 02:16:26,698 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 02:16:26,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:16:26,727 INFO L85 PathProgramCache]: Analyzing trace with hash 327228190, now seen corresponding path program 1 times [2023-02-14 02:16:26,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 02:16:26,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [941926195] [2023-02-14 02:16:26,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:16:26,739 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 02:16:26,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 02:16:26,741 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 02:16:26,777 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 02:16:27,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:16:27,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-14 02:16:27,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:16:27,167 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 02:16:27,167 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 02:16:27,168 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 02:16:27,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [941926195] [2023-02-14 02:16:27,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [941926195] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 02:16:27,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 02:16:27,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 02:16:27,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012317531] [2023-02-14 02:16:27,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 02:16:27,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-14 02:16:27,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 02:16:27,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-14 02:16:27,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-14 02:16:27,193 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 02:16:29,218 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-14 02:16:31,223 WARN L539 Checker$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 02:16:33,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 02:16:33,637 INFO L93 Difference]: Finished difference Result 1200 states and 1437 transitions. [2023-02-14 02:16:33,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-14 02:16:33,639 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 02:16:33,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 02:16:33,653 INFO L225 Difference]: With dead ends: 1200 [2023-02-14 02:16:33,653 INFO L226 Difference]: Without dead ends: 1196 [2023-02-14 02:16:33,654 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 02:16:33,657 INFO L413 NwaCegarLoop]: 753 mSDtfsCounter, 684 mSDsluCounter, 1710 mSDsCounter, 0 mSdLazyCounter, 1106 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s 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, 6.3s IncrementalHoareTripleChecker+Time [2023-02-14 02:16:33,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [685 Valid, 2463 Invalid, 1112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1106 Invalid, 2 Unknown, 0 Unchecked, 6.3s Time] [2023-02-14 02:16:33,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1196 states. [2023-02-14 02:16:33,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1196 to 983. [2023-02-14 02:16:33,765 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 02:16:33,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 983 states to 983 states and 1341 transitions. [2023-02-14 02:16:33,771 INFO L78 Accepts]: Start accepts. Automaton has 983 states and 1341 transitions. Word has length 5 [2023-02-14 02:16:33,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 02:16:33,771 INFO L495 AbstractCegarLoop]: Abstraction has 983 states and 1341 transitions. [2023-02-14 02:16:33,771 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 02:16:33,771 INFO L276 IsEmpty]: Start isEmpty. Operand 983 states and 1341 transitions. [2023-02-14 02:16:33,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-02-14 02:16:33,772 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:16:33,772 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-02-14 02:16:33,783 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 (2)] Forceful destruction successful, exit code 0 [2023-02-14 02:16:33,982 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 02:16:33,983 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 02:16:33,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:16:33,984 INFO L85 PathProgramCache]: Analyzing trace with hash 327228191, now seen corresponding path program 1 times [2023-02-14 02:16:33,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 02:16:33,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1809278148] [2023-02-14 02:16:33,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:16:33,985 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 02:16:33,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 02:16:33,986 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 02:16:33,988 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 02:16:34,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:16:34,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-14 02:16:34,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:16:34,391 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 02:16:34,391 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 02:16:34,391 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 02:16:34,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1809278148] [2023-02-14 02:16:34,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1809278148] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 02:16:34,392 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 02:16:34,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 02:16:34,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304658385] [2023-02-14 02:16:34,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 02:16:34,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-14 02:16:34,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 02:16:34,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-14 02:16:34,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-14 02:16:34,394 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 02:16:36,424 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-14 02:16:38,430 WARN L539 Checker$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 02:16:39,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 02:16:39,935 INFO L93 Difference]: Finished difference Result 1115 states and 1433 transitions. [2023-02-14 02:16:39,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-14 02:16:39,935 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 02:16:39,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 02:16:39,943 INFO L225 Difference]: With dead ends: 1115 [2023-02-14 02:16:39,947 INFO L226 Difference]: Without dead ends: 1115 [2023-02-14 02:16:39,947 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 02:16:39,948 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 02:16:39,953 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 02:16:39,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1115 states. [2023-02-14 02:16:39,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1115 to 1056. [2023-02-14 02:16:39,978 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 02:16:39,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1056 states to 1056 states and 1429 transitions. [2023-02-14 02:16:39,982 INFO L78 Accepts]: Start accepts. Automaton has 1056 states and 1429 transitions. Word has length 5 [2023-02-14 02:16:39,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 02:16:39,982 INFO L495 AbstractCegarLoop]: Abstraction has 1056 states and 1429 transitions. [2023-02-14 02:16:39,982 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 02:16:39,982 INFO L276 IsEmpty]: Start isEmpty. Operand 1056 states and 1429 transitions. [2023-02-14 02:16:39,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-02-14 02:16:39,983 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:16:39,983 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 02:16:39,993 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-02-14 02:16:40,193 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 02:16:40,194 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 02:16:40,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:16:40,194 INFO L85 PathProgramCache]: Analyzing trace with hash -27521378, now seen corresponding path program 1 times [2023-02-14 02:16:40,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 02:16:40,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1540668512] [2023-02-14 02:16:40,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:16:40,195 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 02:16:40,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 02:16:40,197 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 02:16:40,199 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 02:16:40,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:16:40,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-14 02:16:40,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:16:40,558 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 02:16:40,558 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 02:16:40,558 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 02:16:40,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1540668512] [2023-02-14 02:16:40,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1540668512] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 02:16:40,559 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 02:16:40,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-02-14 02:16:40,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11516506] [2023-02-14 02:16:40,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 02:16:40,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 02:16:40,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 02:16:40,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 02:16:40,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 02:16:40,560 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 02:16:41,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 02:16:41,456 INFO L93 Difference]: Finished difference Result 1262 states and 1516 transitions. [2023-02-14 02:16:41,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 02:16:41,456 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 02:16:41,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 02:16:41,461 INFO L225 Difference]: With dead ends: 1262 [2023-02-14 02:16:41,461 INFO L226 Difference]: Without dead ends: 1262 [2023-02-14 02:16:41,461 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 02:16:41,461 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, 0.9s IncrementalHoareTripleChecker+Time [2023-02-14 02:16:41,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [657 Valid, 1284 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-02-14 02:16:41,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1262 states. [2023-02-14 02:16:41,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1262 to 1055. [2023-02-14 02:16:41,503 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 02:16:41,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1055 states to 1055 states and 1424 transitions. [2023-02-14 02:16:41,509 INFO L78 Accepts]: Start accepts. Automaton has 1055 states and 1424 transitions. Word has length 11 [2023-02-14 02:16:41,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 02:16:41,509 INFO L495 AbstractCegarLoop]: Abstraction has 1055 states and 1424 transitions. [2023-02-14 02:16:41,510 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 02:16:41,510 INFO L276 IsEmpty]: Start isEmpty. Operand 1055 states and 1424 transitions. [2023-02-14 02:16:41,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-02-14 02:16:41,510 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:16:41,510 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 02:16:41,531 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 02:16:41,721 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 02:16:41,721 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 02:16:41,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:16:41,722 INFO L85 PathProgramCache]: Analyzing trace with hash -27521377, now seen corresponding path program 1 times [2023-02-14 02:16:41,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 02:16:41,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [780282538] [2023-02-14 02:16:41,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:16:41,723 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 02:16:41,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 02:16:41,726 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 02:16:41,727 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 02:16:42,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:16:42,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-14 02:16:42,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:16:42,199 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 02:16:42,199 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 02:16:42,199 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 02:16:42,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [780282538] [2023-02-14 02:16:42,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [780282538] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 02:16:42,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 02:16:42,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-14 02:16:42,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118827280] [2023-02-14 02:16:42,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 02:16:42,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-14 02:16:42,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 02:16:42,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-14 02:16:42,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-14 02:16:42,201 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 02:16:44,229 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 02:16:45,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 02:16:45,488 INFO L93 Difference]: Finished difference Result 1121 states and 1439 transitions. [2023-02-14 02:16:45,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-14 02:16:45,489 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 02:16:45,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 02:16:45,492 INFO L225 Difference]: With dead ends: 1121 [2023-02-14 02:16:45,492 INFO L226 Difference]: Without dead ends: 1121 [2023-02-14 02:16:45,492 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 02:16:45,494 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 02:16:45,494 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 02:16:45,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1121 states. [2023-02-14 02:16:45,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1121 to 1058. [2023-02-14 02:16:45,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1058 states, 634 states have (on average 1.7555205047318612) internal successors, (1113), 856 states have internal predecessors, (1113), 157 states have call successors, (157), 63 states have call predecessors, (157), 63 states have return successors, (157), 150 states have call predecessors, (157), 157 states have call successors, (157) [2023-02-14 02:16:45,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1058 states to 1058 states and 1427 transitions. [2023-02-14 02:16:45,517 INFO L78 Accepts]: Start accepts. Automaton has 1058 states and 1427 transitions. Word has length 11 [2023-02-14 02:16:45,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 02:16:45,517 INFO L495 AbstractCegarLoop]: Abstraction has 1058 states and 1427 transitions. [2023-02-14 02:16:45,517 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 02:16:45,517 INFO L276 IsEmpty]: Start isEmpty. Operand 1058 states and 1427 transitions. [2023-02-14 02:16:45,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-14 02:16:45,518 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:16:45,518 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 02:16:45,533 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 (5)] Ended with exit code 0 [2023-02-14 02:16:45,732 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 02:16:45,733 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 202 more)] === [2023-02-14 02:16:45,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:16:45,733 INFO L85 PathProgramCache]: Analyzing trace with hash 449678287, now seen corresponding path program 1 times [2023-02-14 02:16:45,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 02:16:45,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [821237792] [2023-02-14 02:16:45,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:16:45,734 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-14 02:16:45,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 02:16:45,737 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 02:16:45,740 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 02:16:46,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:16:46,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-14 02:16:46,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:16:46,175 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 02:16:46,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 02:16:46,324 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 02:16:46,324 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 02:16:46,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [821237792] [2023-02-14 02:16:46,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [821237792] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 02:16:46,324 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-14 02:16:46,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4] total 7 [2023-02-14 02:16:46,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694904313] [2023-02-14 02:16:46,325 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-14 02:16:46,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-14 02:16:46,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 02:16:46,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-14 02:16:46,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-02-14 02:16:46,326 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 02:16:48,344 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 02:16:50,348 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-14 02:16:52,354 WARN L539 Checker$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 02:16:54,358 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 02:16:59,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 02:16:59,069 INFO L93 Difference]: Finished difference Result 1331 states and 1673 transitions. [2023-02-14 02:16:59,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-14 02:16:59,070 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 02:16:59,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 02:16:59,074 INFO L225 Difference]: With dead ends: 1331 [2023-02-14 02:16:59,074 INFO L226 Difference]: Without dead ends: 1331 [2023-02-14 02:16:59,075 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 02:16:59,075 INFO L413 NwaCegarLoop]: 835 mSDtfsCounter, 1036 mSDsluCounter, 2360 mSDsCounter, 0 mSdLazyCounter, 1355 mSolverCounterSat, 82 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s 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, 12.5s IncrementalHoareTripleChecker+Time [2023-02-14 02:16:59,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1048 Valid, 3195 Invalid, 1441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1355 Invalid, 4 Unknown, 0 Unchecked, 12.5s Time] [2023-02-14 02:16:59,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1331 states. [2023-02-14 02:16:59,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1331 to 1205. [2023-02-14 02:16:59,092 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 02:16:59,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1205 states to 1205 states and 1653 transitions. [2023-02-14 02:16:59,095 INFO L78 Accepts]: Start accepts. Automaton has 1205 states and 1653 transitions. Word has length 14 [2023-02-14 02:16:59,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 02:16:59,095 INFO L495 AbstractCegarLoop]: Abstraction has 1205 states and 1653 transitions. [2023-02-14 02:16:59,096 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 02:16:59,096 INFO L276 IsEmpty]: Start isEmpty. Operand 1205 states and 1653 transitions. [2023-02-14 02:16:59,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-14 02:16:59,096 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:16:59,096 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 02:16:59,108 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-02-14 02:16:59,307 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 02:16:59,308 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 02:16:59,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:16:59,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1064725833, now seen corresponding path program 1 times [2023-02-14 02:16:59,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 02:16:59,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [63108068] [2023-02-14 02:16:59,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:16:59,309 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 02:16:59,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 02:16:59,310 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 02:16:59,312 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 02:16:59,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:16:59,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-14 02:16:59,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:16:59,651 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 02:16:59,652 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 02:16:59,698 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 02:16:59,699 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 02:16:59,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [63108068] [2023-02-14 02:16:59,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [63108068] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 02:16:59,699 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-14 02:16:59,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-02-14 02:16:59,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26612604] [2023-02-14 02:16:59,700 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-14 02:16:59,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-14 02:16:59,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 02:16:59,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-14 02:16:59,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-02-14 02:16:59,704 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 02:16:59,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 02:16:59,946 INFO L93 Difference]: Finished difference Result 1211 states and 1657 transitions. [2023-02-14 02:16:59,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-14 02:16:59,947 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 02:16:59,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 02:16:59,951 INFO L225 Difference]: With dead ends: 1211 [2023-02-14 02:16:59,951 INFO L226 Difference]: Without dead ends: 1211 [2023-02-14 02:16:59,951 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 02:16:59,951 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 02:16:59,952 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 02:16:59,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1211 states. [2023-02-14 02:16:59,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1211 to 1210. [2023-02-14 02:16:59,969 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 02:17:00,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1657 transitions. [2023-02-14 02:17:00,012 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1657 transitions. Word has length 19 [2023-02-14 02:17:00,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 02:17:00,013 INFO L495 AbstractCegarLoop]: Abstraction has 1210 states and 1657 transitions. [2023-02-14 02:17:00,013 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 02:17:00,013 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1657 transitions. [2023-02-14 02:17:00,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-02-14 02:17:00,013 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:17:00,014 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 02:17:00,039 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 02:17:00,224 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 02:17:00,225 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 02:17:00,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:17:00,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1407192417, now seen corresponding path program 2 times [2023-02-14 02:17:00,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 02:17:00,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1455779764] [2023-02-14 02:17:00,226 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-14 02:17:00,226 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 02:17:00,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 02:17:00,227 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 02:17:00,229 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 02:17:00,690 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-14 02:17:00,690 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 02:17:00,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 580 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-14 02:17:00,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:17:00,931 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 02:17:00,931 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 02:17:01,523 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 02:17:01,523 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 02:17:01,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1455779764] [2023-02-14 02:17:01,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1455779764] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 02:17:01,524 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-14 02:17:01,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 14 [2023-02-14 02:17:01,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195220600] [2023-02-14 02:17:01,524 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-14 02:17:01,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-02-14 02:17:01,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 02:17:01,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-02-14 02:17:01,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2023-02-14 02:17:01,525 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 02:17:03,543 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 02:17:05,548 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-14 02:17:07,555 WARN L539 Checker$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 02:17:09,561 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-14 02:17:11,566 WARN L539 Checker$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 02:17:13,569 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 02:17:23,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 02:17:23,908 INFO L93 Difference]: Finished difference Result 1337 states and 1691 transitions. [2023-02-14 02:17:23,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-02-14 02:17:23,909 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 02:17:23,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 02:17:23,934 INFO L225 Difference]: With dead ends: 1337 [2023-02-14 02:17:23,934 INFO L226 Difference]: Without dead ends: 1337 [2023-02-14 02:17:23,935 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 02:17:23,936 INFO L413 NwaCegarLoop]: 823 mSDtfsCounter, 701 mSDsluCounter, 5514 mSDsCounter, 0 mSdLazyCounter, 3127 mSolverCounterSat, 81 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.0s 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, 21.0s IncrementalHoareTripleChecker+Time [2023-02-14 02:17:23,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [713 Valid, 6337 Invalid, 3214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 3127 Invalid, 6 Unknown, 0 Unchecked, 21.0s Time] [2023-02-14 02:17:23,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1337 states. [2023-02-14 02:17:23,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1337 to 1223. [2023-02-14 02:17:23,961 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 02:17:23,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1223 states to 1223 states and 1673 transitions. [2023-02-14 02:17:23,964 INFO L78 Accepts]: Start accepts. Automaton has 1223 states and 1673 transitions. Word has length 23 [2023-02-14 02:17:23,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 02:17:23,964 INFO L495 AbstractCegarLoop]: Abstraction has 1223 states and 1673 transitions. [2023-02-14 02:17:23,964 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 02:17:23,965 INFO L276 IsEmpty]: Start isEmpty. Operand 1223 states and 1673 transitions. [2023-02-14 02:17:23,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-02-14 02:17:23,965 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:17:23,965 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 02:17:23,977 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 02:17:24,177 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 02:17:24,177 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 02:17:24,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:17:24,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1830179145, now seen corresponding path program 2 times [2023-02-14 02:17:24,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 02:17:24,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [217435312] [2023-02-14 02:17:24,178 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-14 02:17:24,178 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 02:17:24,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 02:17:24,179 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 02:17:24,184 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 02:17:24,510 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-02-14 02:17:24,510 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 02:17:24,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-14 02:17:24,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:17:24,628 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 02:17:24,628 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 02:17:24,628 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 02:17:24,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [217435312] [2023-02-14 02:17:24,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [217435312] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 02:17:24,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 02:17:24,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-02-14 02:17:24,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440483281] [2023-02-14 02:17:24,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 02:17:24,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 02:17:24,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 02:17:24,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 02:17:24,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 02:17:24,629 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 02:17:25,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 02:17:25,569 INFO L93 Difference]: Finished difference Result 1431 states and 1766 transitions. [2023-02-14 02:17:25,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 02:17:25,569 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 02:17:25,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 02:17:25,573 INFO L225 Difference]: With dead ends: 1431 [2023-02-14 02:17:25,573 INFO L226 Difference]: Without dead ends: 1431 [2023-02-14 02:17:25,573 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 02:17:25,573 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 02:17:25,574 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 02:17:25,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1431 states. [2023-02-14 02:17:25,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1431 to 1221. [2023-02-14 02:17:25,588 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 02:17:25,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1221 states to 1221 states and 1664 transitions. [2023-02-14 02:17:25,591 INFO L78 Accepts]: Start accepts. Automaton has 1221 states and 1664 transitions. Word has length 31 [2023-02-14 02:17:25,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 02:17:25,592 INFO L495 AbstractCegarLoop]: Abstraction has 1221 states and 1664 transitions. [2023-02-14 02:17:25,592 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 02:17:25,592 INFO L276 IsEmpty]: Start isEmpty. Operand 1221 states and 1664 transitions. [2023-02-14 02:17:25,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-02-14 02:17:25,593 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:17:25,593 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 02:17:25,613 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 02:17:25,811 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 02:17:25,811 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 02:17:25,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:17:25,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1830179146, now seen corresponding path program 1 times [2023-02-14 02:17:25,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 02:17:25,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [353152418] [2023-02-14 02:17:25,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:17:25,813 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 02:17:25,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 02:17:25,825 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 02:17:25,852 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 02:17:26,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:17:26,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-14 02:17:26,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:17:26,331 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 02:17:26,331 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 02:17:26,559 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 02:17:26,559 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 02:17:26,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [353152418] [2023-02-14 02:17:26,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [353152418] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 02:17:26,559 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-14 02:17:26,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-02-14 02:17:26,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786945989] [2023-02-14 02:17:26,560 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-14 02:17:26,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-02-14 02:17:26,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 02:17:26,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-02-14 02:17:26,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2023-02-14 02:17:26,561 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 02:17:27,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 02:17:27,256 INFO L93 Difference]: Finished difference Result 1221 states and 1660 transitions. [2023-02-14 02:17:27,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-14 02:17:27,257 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 02:17:27,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 02:17:27,262 INFO L225 Difference]: With dead ends: 1221 [2023-02-14 02:17:27,262 INFO L226 Difference]: Without dead ends: 1221 [2023-02-14 02:17:27,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2023-02-14 02:17:27,263 INFO L413 NwaCegarLoop]: 780 mSDtfsCounter, 3379 mSDsluCounter, 4789 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 235 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2023-02-14 02:17:27,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3411 Valid, 5569 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [235 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-02-14 02:17:27,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1221 states. [2023-02-14 02:17:27,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1221 to 1221. [2023-02-14 02:17:27,282 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 02:17:27,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1221 states to 1221 states and 1660 transitions. [2023-02-14 02:17:27,324 INFO L78 Accepts]: Start accepts. Automaton has 1221 states and 1660 transitions. Word has length 31 [2023-02-14 02:17:27,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 02:17:27,324 INFO L495 AbstractCegarLoop]: Abstraction has 1221 states and 1660 transitions. [2023-02-14 02:17:27,324 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 02:17:27,325 INFO L276 IsEmpty]: Start isEmpty. Operand 1221 states and 1660 transitions. [2023-02-14 02:17:27,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-02-14 02:17:27,325 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:17:27,325 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 02:17:27,338 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 02:17:27,537 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 02:17:27,538 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 02:17:27,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:17:27,539 INFO L85 PathProgramCache]: Analyzing trace with hash -738162529, now seen corresponding path program 3 times [2023-02-14 02:17:27,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 02:17:27,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [831276116] [2023-02-14 02:17:27,539 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-14 02:17:27,539 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 02:17:27,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 02:17:27,541 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 02:17:27,543 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 02:17:28,668 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-02-14 02:17:28,668 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 02:17:28,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 670 conjuncts, 16 conjunts are in the unsatisfiable core [2023-02-14 02:17:28,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:17:29,247 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 02:17:29,247 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 02:17:30,864 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 02:17:30,864 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 02:17:30,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [831276116] [2023-02-14 02:17:30,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [831276116] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 02:17:30,865 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-14 02:17:30,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 26 [2023-02-14 02:17:30,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302289318] [2023-02-14 02:17:30,865 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-14 02:17:30,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-02-14 02:17:30,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 02:17:30,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-02-14 02:17:30,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=458, Unknown=0, NotChecked=0, Total=650 [2023-02-14 02:17:30,866 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 02:17:32,884 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 02:17:34,888 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-14 02:17:36,892 WARN L539 Checker$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 02:17:38,898 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-14 02:17:40,903 WARN L539 Checker$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 02:17:42,911 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-14 02:17:44,914 WARN L539 Checker$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 02:17:46,920 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-14 02:17:48,928 WARN L539 Checker$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 02:17:50,935 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-14 02:17:52,941 WARN L539 Checker$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 02:17:54,948 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-14 02:17:56,955 WARN L539 Checker$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 02:17:58,960 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-14 02:18:00,965 WARN L539 Checker$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 02:18:02,972 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-14 02:18:04,980 WARN L539 Checker$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 02:18:06,984 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 02:18:28,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 02:18:28,287 INFO L93 Difference]: Finished difference Result 1570 states and 1888 transitions. [2023-02-14 02:18:28,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-02-14 02:18:28,287 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 02:18:28,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 02:18:28,293 INFO L225 Difference]: With dead ends: 1570 [2023-02-14 02:18:28,293 INFO L226 Difference]: Without dead ends: 1570 [2023-02-14 02:18:28,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=226, Invalid=530, Unknown=0, NotChecked=0, Total=756 [2023-02-14 02:18:28,294 INFO L413 NwaCegarLoop]: 741 mSDtfsCounter, 2399 mSDsluCounter, 8064 mSDsCounter, 0 mSdLazyCounter, 5461 mSolverCounterSat, 238 mSolverCounterUnsat, 18 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 54.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2411 SdHoareTripleChecker+Valid, 8805 SdHoareTripleChecker+Invalid, 5717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 238 IncrementalHoareTripleChecker+Valid, 5461 IncrementalHoareTripleChecker+Invalid, 18 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 56.8s IncrementalHoareTripleChecker+Time [2023-02-14 02:18:28,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2411 Valid, 8805 Invalid, 5717 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [238 Valid, 5461 Invalid, 18 Unknown, 0 Unchecked, 56.8s Time] [2023-02-14 02:18:28,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1570 states. [2023-02-14 02:18:28,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1570 to 1219. [2023-02-14 02:18:28,357 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 02:18:28,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1219 states to 1219 states and 1657 transitions. [2023-02-14 02:18:28,361 INFO L78 Accepts]: Start accepts. Automaton has 1219 states and 1657 transitions. Word has length 41 [2023-02-14 02:18:28,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 02:18:28,361 INFO L495 AbstractCegarLoop]: Abstraction has 1219 states and 1657 transitions. [2023-02-14 02:18:28,362 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 02:18:28,362 INFO L276 IsEmpty]: Start isEmpty. Operand 1219 states and 1657 transitions. [2023-02-14 02:18:28,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-02-14 02:18:28,362 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:18:28,363 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 02:18:28,380 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 02:18:28,576 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 02:18:28,576 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 02:18:28,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:18:28,577 INFO L85 PathProgramCache]: Analyzing trace with hash -704629430, now seen corresponding path program 2 times [2023-02-14 02:18:28,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 02:18:28,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1674210929] [2023-02-14 02:18:28,578 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-14 02:18:28,578 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 02:18:28,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 02:18:28,580 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 02:18:28,581 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 02:18:29,075 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-02-14 02:18:29,075 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 02:18:29,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-14 02:18:29,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:18:29,364 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 02:18:29,364 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 02:18:29,364 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 02:18:29,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1674210929] [2023-02-14 02:18:29,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1674210929] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 02:18:29,365 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 02:18:29,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-14 02:18:29,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811619324] [2023-02-14 02:18:29,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 02:18:29,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-14 02:18:29,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 02:18:29,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-14 02:18:29,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-14 02:18:29,367 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 02:18:31,386 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 02:18:32,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 02:18:32,947 INFO L93 Difference]: Finished difference Result 1275 states and 1669 transitions. [2023-02-14 02:18:32,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-14 02:18:32,947 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 02:18:32,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 02:18:32,951 INFO L225 Difference]: With dead ends: 1275 [2023-02-14 02:18:32,951 INFO L226 Difference]: Without dead ends: 1275 [2023-02-14 02:18:32,951 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 02:18:32,951 INFO L413 NwaCegarLoop]: 830 mSDtfsCounter, 234 mSDsluCounter, 1144 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 1974 SdHoareTripleChecker+Invalid, 574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-02-14 02:18:32,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 1974 Invalid, 574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 571 Invalid, 1 Unknown, 0 Unchecked, 3.5s Time] [2023-02-14 02:18:32,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1275 states. [2023-02-14 02:18:32,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1275 to 1217. [2023-02-14 02:18:32,967 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 02:18:32,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 1655 transitions. [2023-02-14 02:18:32,970 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 1655 transitions. Word has length 43 [2023-02-14 02:18:32,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 02:18:32,971 INFO L495 AbstractCegarLoop]: Abstraction has 1217 states and 1655 transitions. [2023-02-14 02:18:32,971 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 02:18:32,971 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 1655 transitions. [2023-02-14 02:18:32,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-02-14 02:18:32,972 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:18:32,972 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 02:18:32,986 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 (12)] Forceful destruction successful, exit code 0 [2023-02-14 02:18:33,184 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 02:18:33,184 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 02:18:33,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:18:33,185 INFO L85 PathProgramCache]: Analyzing trace with hash 2020825701, now seen corresponding path program 1 times [2023-02-14 02:18:33,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 02:18:33,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1869635725] [2023-02-14 02:18:33,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:18:33,185 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 02:18:33,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 02:18:33,201 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 02:18:33,204 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 02:18:33,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:18:33,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 755 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-14 02:18:33,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:18:33,876 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 02:18:33,876 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 02:18:33,876 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 02:18:33,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1869635725] [2023-02-14 02:18:33,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1869635725] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 02:18:33,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 02:18:33,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-14 02:18:33,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934550378] [2023-02-14 02:18:33,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 02:18:33,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 02:18:33,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 02:18:33,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 02:18:33,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 02:18:33,877 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 02:18:33,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 02:18:33,890 INFO L93 Difference]: Finished difference Result 1217 states and 1654 transitions. [2023-02-14 02:18:33,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 02:18:33,892 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 02:18:33,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 02:18:33,896 INFO L225 Difference]: With dead ends: 1217 [2023-02-14 02:18:33,896 INFO L226 Difference]: Without dead ends: 1217 [2023-02-14 02:18:33,896 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 02:18:33,897 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 02:18:33,897 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 02:18:33,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1217 states. [2023-02-14 02:18:33,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1217 to 1217. [2023-02-14 02:18:33,916 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 02:18:33,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 1654 transitions. [2023-02-14 02:18:33,919 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 1654 transitions. Word has length 67 [2023-02-14 02:18:33,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 02:18:33,920 INFO L495 AbstractCegarLoop]: Abstraction has 1217 states and 1654 transitions. [2023-02-14 02:18:33,920 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 02:18:33,920 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 1654 transitions. [2023-02-14 02:18:33,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-02-14 02:18:33,921 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:18:33,921 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 02:18:33,937 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 (13)] Ended with exit code 0 [2023-02-14 02:18:34,136 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 02:18:34,137 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 02:18:34,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:18:34,137 INFO L85 PathProgramCache]: Analyzing trace with hash 2020823779, now seen corresponding path program 1 times [2023-02-14 02:18:34,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 02:18:34,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [250178736] [2023-02-14 02:18:34,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:18:34,138 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 02:18:34,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 02:18:34,140 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 02:18:34,142 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 02:18:34,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:18:34,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 756 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-14 02:18:34,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:18:34,770 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 02:18:34,777 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 02:18:34,777 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 02:18:34,777 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 02:18:34,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [250178736] [2023-02-14 02:18:34,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [250178736] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 02:18:34,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 02:18:34,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-14 02:18:34,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813316117] [2023-02-14 02:18:34,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 02:18:34,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 02:18:34,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 02:18:34,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 02:18:34,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 02:18:34,783 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 02:18:36,830 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-14 02:18:37,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 02:18:37,386 INFO L93 Difference]: Finished difference Result 1216 states and 1653 transitions. [2023-02-14 02:18:37,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 02:18:37,401 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 02:18:37,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 02:18:37,405 INFO L225 Difference]: With dead ends: 1216 [2023-02-14 02:18:37,405 INFO L226 Difference]: Without dead ends: 1216 [2023-02-14 02:18:37,405 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 02:18:37,405 INFO L413 NwaCegarLoop]: 783 mSDtfsCounter, 2 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1355 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-02-14 02:18:37,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1355 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 212 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2023-02-14 02:18:37,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1216 states. [2023-02-14 02:18:37,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1216 to 1216. [2023-02-14 02:18:37,422 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 02:18:37,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1216 states to 1216 states and 1653 transitions. [2023-02-14 02:18:37,425 INFO L78 Accepts]: Start accepts. Automaton has 1216 states and 1653 transitions. Word has length 67 [2023-02-14 02:18:37,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 02:18:37,425 INFO L495 AbstractCegarLoop]: Abstraction has 1216 states and 1653 transitions. [2023-02-14 02:18:37,425 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 02:18:37,425 INFO L276 IsEmpty]: Start isEmpty. Operand 1216 states and 1653 transitions. [2023-02-14 02:18:37,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-02-14 02:18:37,426 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:18:37,426 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 02:18:37,440 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 (14)] Ended with exit code 0 [2023-02-14 02:18:37,639 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 02:18:37,640 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 02:18:37,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:18:37,640 INFO L85 PathProgramCache]: Analyzing trace with hash 2020823780, now seen corresponding path program 1 times [2023-02-14 02:18:37,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 02:18:37,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [582778183] [2023-02-14 02:18:37,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:18:37,641 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-14 02:18:37,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 02:18:37,643 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 02:18:37,647 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 02:18:38,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:18:38,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 756 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-14 02:18:38,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:18:38,327 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 02:18:38,340 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 02:18:38,340 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 02:18:38,340 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 02:18:38,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [582778183] [2023-02-14 02:18:38,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [582778183] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 02:18:38,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 02:18:38,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-14 02:18:38,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065310898] [2023-02-14 02:18:38,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 02:18:38,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-14 02:18:38,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 02:18:38,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-14 02:18:38,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-14 02:18:38,341 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 02:18:40,362 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 02:18:41,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 02:18:41,124 INFO L93 Difference]: Finished difference Result 1215 states and 1652 transitions. [2023-02-14 02:18:41,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-14 02:18:41,125 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 02:18:41,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 02:18:41,128 INFO L225 Difference]: With dead ends: 1215 [2023-02-14 02:18:41,128 INFO L226 Difference]: Without dead ends: 1215 [2023-02-14 02:18:41,129 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 02:18:41,129 INFO L413 NwaCegarLoop]: 780 mSDtfsCounter, 747 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 747 SdHoareTripleChecker+Valid, 1356 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-02-14 02:18:41,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [747 Valid, 1356 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 210 Invalid, 1 Unknown, 0 Unchecked, 2.8s Time] [2023-02-14 02:18:41,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1215 states. [2023-02-14 02:18:41,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1215 to 1215. [2023-02-14 02:18:41,142 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 02:18:41,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1215 states to 1215 states and 1652 transitions. [2023-02-14 02:18:41,144 INFO L78 Accepts]: Start accepts. Automaton has 1215 states and 1652 transitions. Word has length 67 [2023-02-14 02:18:41,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 02:18:41,144 INFO L495 AbstractCegarLoop]: Abstraction has 1215 states and 1652 transitions. [2023-02-14 02:18:41,144 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 02:18:41,144 INFO L276 IsEmpty]: Start isEmpty. Operand 1215 states and 1652 transitions. [2023-02-14 02:18:41,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-02-14 02:18:41,145 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:18:41,145 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 02:18:41,162 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 02:18:41,361 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 02:18:41,362 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 02:18:41,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:18:41,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1355687384, now seen corresponding path program 1 times [2023-02-14 02:18:41,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 02:18:41,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [70841723] [2023-02-14 02:18:41,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:18:41,364 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 02:18:41,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 02:18:41,365 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 02:18:41,366 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 02:18:41,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:18:41,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 749 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-14 02:18:41,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:18:41,956 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 02:18:41,956 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 02:18:41,956 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 02:18:41,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [70841723] [2023-02-14 02:18:41,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [70841723] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 02:18:41,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 02:18:41,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-14 02:18:41,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525725013] [2023-02-14 02:18:41,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 02:18:41,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 02:18:41,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 02:18:41,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 02:18:41,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 02:18:41,958 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 02:18:43,998 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-14 02:18:44,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 02:18:44,855 INFO L93 Difference]: Finished difference Result 1256 states and 1661 transitions. [2023-02-14 02:18:44,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 02:18:44,855 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 02:18:44,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 02:18:44,861 INFO L225 Difference]: With dead ends: 1256 [2023-02-14 02:18:44,861 INFO L226 Difference]: Without dead ends: 1244 [2023-02-14 02:18:44,863 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 02:18:44,864 INFO L413 NwaCegarLoop]: 772 mSDtfsCounter, 93 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s 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, 2.9s IncrementalHoareTripleChecker+Time [2023-02-14 02:18:44,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 1317 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 258 Invalid, 1 Unknown, 0 Unchecked, 2.9s Time] [2023-02-14 02:18:44,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1244 states. [2023-02-14 02:18:44,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1244 to 1211. [2023-02-14 02:18:44,881 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 02:18:44,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1211 states to 1211 states and 1645 transitions. [2023-02-14 02:18:44,884 INFO L78 Accepts]: Start accepts. Automaton has 1211 states and 1645 transitions. Word has length 74 [2023-02-14 02:18:44,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 02:18:44,884 INFO L495 AbstractCegarLoop]: Abstraction has 1211 states and 1645 transitions. [2023-02-14 02:18:44,884 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 02:18:44,885 INFO L276 IsEmpty]: Start isEmpty. Operand 1211 states and 1645 transitions. [2023-02-14 02:18:44,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-02-14 02:18:44,885 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:18:44,885 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 02:18:44,911 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 (16)] Ended with exit code 0 [2023-02-14 02:18:45,099 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 02:18:45,099 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 02:18:45,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:18:45,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1244150361, now seen corresponding path program 1 times [2023-02-14 02:18:45,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 02:18:45,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [445206977] [2023-02-14 02:18:45,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:18:45,101 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 02:18:45,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 02:18:45,102 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 02:18:45,110 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 02:18:46,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:18:46,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 784 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-14 02:18:46,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:18:46,717 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-02-14 02:18:46,717 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 02:18:46,761 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 02:18:46,790 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 02:18:46,790 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 02:18:46,863 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 02:18:46,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [445206977] [2023-02-14 02:18:46,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [445206977] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 02:18:46,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [4308208] [2023-02-14 02:18:46,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:18:46,864 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-02-14 02:18:46,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-02-14 02:18:46,878 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 02:18:46,880 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 02:18:48,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:18:49,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 784 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-14 02:18:49,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:18:49,607 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-02-14 02:18:49,607 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 02:18:49,696 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 02:18:49,757 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 02:18:49,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 02:18:49,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [4308208] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 02:18:49,816 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-14 02:18:49,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2023-02-14 02:18:49,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102975621] [2023-02-14 02:18:49,816 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-14 02:18:49,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-14 02:18:49,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 02:18:49,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-14 02:18:49,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-02-14 02:18:49,817 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 02:18:51,841 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 02:18:53,844 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-14 02:18:55,849 WARN L539 Checker$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 02:18:57,854 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 02:19:01,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 02:19:01,142 INFO L93 Difference]: Finished difference Result 1742 states and 2280 transitions. [2023-02-14 02:19:01,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-14 02:19:01,143 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 02:19:01,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 02:19:01,149 INFO L225 Difference]: With dead ends: 1742 [2023-02-14 02:19:01,149 INFO L226 Difference]: Without dead ends: 1742 [2023-02-14 02:19:01,150 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 02:19:01,150 INFO L413 NwaCegarLoop]: 704 mSDtfsCounter, 750 mSDsluCounter, 3579 mSDsCounter, 0 mSdLazyCounter, 2480 mSolverCounterSat, 4 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s 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, 11.2s IncrementalHoareTripleChecker+Time [2023-02-14 02:19:01,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [751 Valid, 4283 Invalid, 2488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2480 Invalid, 4 Unknown, 0 Unchecked, 11.2s Time] [2023-02-14 02:19:01,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1742 states. [2023-02-14 02:19:01,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1742 to 1519. [2023-02-14 02:19:01,174 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 02:19:01,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1519 states to 1519 states and 2178 transitions. [2023-02-14 02:19:01,178 INFO L78 Accepts]: Start accepts. Automaton has 1519 states and 2178 transitions. Word has length 76 [2023-02-14 02:19:01,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 02:19:01,178 INFO L495 AbstractCegarLoop]: Abstraction has 1519 states and 2178 transitions. [2023-02-14 02:19:01,179 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 02:19:01,179 INFO L276 IsEmpty]: Start isEmpty. Operand 1519 states and 2178 transitions. [2023-02-14 02:19:01,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-02-14 02:19:01,184 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:19:01,184 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 02:19:01,205 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 02:19:01,414 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 02:19:01,602 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 02:19:01,602 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 02:19:01,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:19:01,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1244150360, now seen corresponding path program 1 times [2023-02-14 02:19:01,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 02:19:01,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [46602504] [2023-02-14 02:19:01,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:19:01,604 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 02:19:01,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 02:19:01,605 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 02:19:01,607 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 02:19:02,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:19:02,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 784 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-14 02:19:02,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:19:03,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 02:19:03,354 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 02:19:03,440 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 02:19:03,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 02:19:03,830 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 02:19:03,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [46602504] [2023-02-14 02:19:03,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [46602504] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 02:19:03,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [966663885] [2023-02-14 02:19:03,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:19:03,831 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-02-14 02:19:03,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-02-14 02:19:03,832 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 02:19:03,851 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 02:19:05,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:19:05,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 784 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-14 02:19:05,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:19:06,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 02:19:06,241 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 02:19:06,319 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 02:19:06,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 02:19:06,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [966663885] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 02:19:06,589 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-14 02:19:06,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2023-02-14 02:19:06,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807055263] [2023-02-14 02:19:06,592 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-14 02:19:06,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-14 02:19:06,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 02:19:06,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-14 02:19:06,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-02-14 02:19:06,594 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 02:19:08,625 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 02:19:10,632 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 02:19:14,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 02:19:14,151 INFO L93 Difference]: Finished difference Result 1942 states and 2503 transitions. [2023-02-14 02:19:14,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-14 02:19:14,151 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 02:19:14,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 02:19:14,156 INFO L225 Difference]: With dead ends: 1942 [2023-02-14 02:19:14,156 INFO L226 Difference]: Without dead ends: 1942 [2023-02-14 02:19:14,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 171 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 02:19:14,157 INFO L413 NwaCegarLoop]: 620 mSDtfsCounter, 967 mSDsluCounter, 1676 mSDsCounter, 0 mSdLazyCounter, 1905 mSolverCounterSat, 7 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s 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, 7.4s IncrementalHoareTripleChecker+Time [2023-02-14 02:19:14,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [967 Valid, 2296 Invalid, 1914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1905 Invalid, 2 Unknown, 0 Unchecked, 7.4s Time] [2023-02-14 02:19:14,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1942 states. [2023-02-14 02:19:14,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1942 to 1696. [2023-02-14 02:19:14,178 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 02:19:14,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1696 states to 1696 states and 2475 transitions. [2023-02-14 02:19:14,181 INFO L78 Accepts]: Start accepts. Automaton has 1696 states and 2475 transitions. Word has length 76 [2023-02-14 02:19:14,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 02:19:14,182 INFO L495 AbstractCegarLoop]: Abstraction has 1696 states and 2475 transitions. [2023-02-14 02:19:14,182 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 02:19:14,182 INFO L276 IsEmpty]: Start isEmpty. Operand 1696 states and 2475 transitions. [2023-02-14 02:19:14,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-02-14 02:19:14,183 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:19:14,183 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 02:19:14,220 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 02:19:14,427 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-02-14 02:19:14,609 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 02:19:14,609 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 02:19:14,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:19:14,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1356949500, now seen corresponding path program 1 times [2023-02-14 02:19:14,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 02:19:14,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [907758529] [2023-02-14 02:19:14,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:19:14,611 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 02:19:14,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 02:19:14,612 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 02:19:14,619 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 02:19:15,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:19:15,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 760 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-14 02:19:15,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:19:15,174 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 02:19:15,174 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 02:19:15,175 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 02:19:15,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [907758529] [2023-02-14 02:19:15,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [907758529] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 02:19:15,175 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 02:19:15,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-14 02:19:15,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128930614] [2023-02-14 02:19:15,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 02:19:15,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-14 02:19:15,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 02:19:15,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-14 02:19:15,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-14 02:19:15,176 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 02:19:15,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 02:19:15,205 INFO L93 Difference]: Finished difference Result 1336 states and 1884 transitions. [2023-02-14 02:19:15,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-14 02:19:15,205 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 02:19:15,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 02:19:15,209 INFO L225 Difference]: With dead ends: 1336 [2023-02-14 02:19:15,209 INFO L226 Difference]: Without dead ends: 1331 [2023-02-14 02:19:15,209 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 02:19:15,209 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 02:19:15,209 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 02:19:15,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1331 states. [2023-02-14 02:19:15,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1331 to 1331. [2023-02-14 02:19:15,227 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 02:19:15,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1331 states to 1331 states and 1878 transitions. [2023-02-14 02:19:15,230 INFO L78 Accepts]: Start accepts. Automaton has 1331 states and 1878 transitions. Word has length 81 [2023-02-14 02:19:15,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 02:19:15,230 INFO L495 AbstractCegarLoop]: Abstraction has 1331 states and 1878 transitions. [2023-02-14 02:19:15,231 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 02:19:15,231 INFO L276 IsEmpty]: Start isEmpty. Operand 1331 states and 1878 transitions. [2023-02-14 02:19:15,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-02-14 02:19:15,232 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:19:15,232 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 02:19:15,255 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 02:19:15,445 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 02:19:15,445 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 02:19:15,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:19:15,447 INFO L85 PathProgramCache]: Analyzing trace with hash 986823980, now seen corresponding path program 1 times [2023-02-14 02:19:15,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 02:19:15,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2063486622] [2023-02-14 02:19:15,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:19:15,448 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 02:19:15,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 02:19:15,449 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 02:19:15,451 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 02:19:16,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:19:16,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 840 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-14 02:19:16,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:19:16,979 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-02-14 02:19:16,979 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 02:19:17,051 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 02:19:17,141 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 02:19:17,141 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 02:19:17,267 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 02:19:17,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2063486622] [2023-02-14 02:19:17,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2063486622] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 02:19:17,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [275916617] [2023-02-14 02:19:17,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:19:17,268 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-02-14 02:19:17,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-02-14 02:19:17,269 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 02:19:17,270 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 02:19:19,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:19:19,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 840 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-14 02:19:19,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:19:19,586 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-02-14 02:19:19,586 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 02:19:19,654 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 02:19:19,739 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 02:19:19,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 02:19:19,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [275916617] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 02:19:19,805 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-14 02:19:19,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2023-02-14 02:19:19,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079394733] [2023-02-14 02:19:19,806 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-14 02:19:19,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-14 02:19:19,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 02:19:19,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-14 02:19:19,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-02-14 02:19:19,807 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 02:19:21,833 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 02:19:23,840 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-14 02:19:25,843 WARN L539 Checker$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 02:19:27,847 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-14 02:19:29,851 WARN L539 Checker$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 02:19:31,855 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 02:19:35,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 02:19:35,105 INFO L93 Difference]: Finished difference Result 1506 states and 1890 transitions. [2023-02-14 02:19:35,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-14 02:19:35,105 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 02:19:35,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 02:19:35,109 INFO L225 Difference]: With dead ends: 1506 [2023-02-14 02:19:35,109 INFO L226 Difference]: Without dead ends: 1506 [2023-02-14 02:19:35,109 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 02:19:35,109 INFO L413 NwaCegarLoop]: 700 mSDtfsCounter, 735 mSDsluCounter, 3860 mSDsCounter, 0 mSdLazyCounter, 2795 mSolverCounterSat, 4 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 736 SdHoareTripleChecker+Valid, 4560 SdHoareTripleChecker+Invalid, 2805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2795 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.2s IncrementalHoareTripleChecker+Time [2023-02-14 02:19:35,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [736 Valid, 4560 Invalid, 2805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2795 Invalid, 6 Unknown, 0 Unchecked, 15.2s Time] [2023-02-14 02:19:35,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1506 states. [2023-02-14 02:19:35,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1506 to 1329. [2023-02-14 02:19:35,145 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 02:19:35,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1329 states to 1329 states and 1876 transitions. [2023-02-14 02:19:35,147 INFO L78 Accepts]: Start accepts. Automaton has 1329 states and 1876 transitions. Word has length 82 [2023-02-14 02:19:35,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 02:19:35,147 INFO L495 AbstractCegarLoop]: Abstraction has 1329 states and 1876 transitions. [2023-02-14 02:19:35,147 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 02:19:35,147 INFO L276 IsEmpty]: Start isEmpty. Operand 1329 states and 1876 transitions. [2023-02-14 02:19:35,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-02-14 02:19:35,148 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:19:35,148 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 02:19:35,174 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (23)] Ended with exit code 0 [2023-02-14 02:19:35,377 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 02:19:35,561 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 02:19:35,561 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 02:19:35,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:19:35,561 INFO L85 PathProgramCache]: Analyzing trace with hash 986823981, now seen corresponding path program 1 times [2023-02-14 02:19:35,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 02:19:35,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [709663503] [2023-02-14 02:19:35,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:19:35,562 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 02:19:35,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 02:19:35,563 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 02:19:35,565 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 02:19:36,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:19:36,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 840 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-14 02:19:36,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:19:37,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 02:19:37,375 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 02:19:37,470 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 02:19:37,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 02:19:39,886 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 02:19:39,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [709663503] [2023-02-14 02:19:39,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [709663503] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 02:19:39,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [408130406] [2023-02-14 02:19:39,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:19:39,886 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-02-14 02:19:39,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-02-14 02:19:39,905 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 02:19:39,906 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 02:19:41,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:19:41,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 840 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-14 02:19:41,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:19:42,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 02:19:42,074 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 02:19:42,166 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 02:19:42,166 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 02:19:42,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [408130406] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 02:19:42,335 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-14 02:19:42,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2023-02-14 02:19:42,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206546633] [2023-02-14 02:19:42,335 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-14 02:19:42,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-14 02:19:42,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 02:19:42,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-14 02:19:42,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=66, Unknown=1, NotChecked=0, Total=90 [2023-02-14 02:19:42,336 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 02:19:44,353 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 02:19:46,359 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 02:19:49,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 02:19:49,002 INFO L93 Difference]: Finished difference Result 1573 states and 1902 transitions. [2023-02-14 02:19:49,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-14 02:19:49,003 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 02:19:49,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 02:19:49,007 INFO L225 Difference]: With dead ends: 1573 [2023-02-14 02:19:49,007 INFO L226 Difference]: Without dead ends: 1573 [2023-02-14 02:19:49,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 195 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=50, Invalid=105, Unknown=1, NotChecked=0, Total=156 [2023-02-14 02:19:49,008 INFO L413 NwaCegarLoop]: 616 mSDtfsCounter, 1480 mSDsluCounter, 1385 mSDsCounter, 0 mSdLazyCounter, 1681 mSolverCounterSat, 135 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s 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, 6.6s IncrementalHoareTripleChecker+Time [2023-02-14 02:19:49,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1481 Valid, 2001 Invalid, 1818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 1681 Invalid, 2 Unknown, 0 Unchecked, 6.6s Time] [2023-02-14 02:19:49,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1573 states. [2023-02-14 02:19:49,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1573 to 1327. [2023-02-14 02:19:49,021 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 02:19:49,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1327 states to 1327 states and 1874 transitions. [2023-02-14 02:19:49,023 INFO L78 Accepts]: Start accepts. Automaton has 1327 states and 1874 transitions. Word has length 82 [2023-02-14 02:19:49,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 02:19:49,024 INFO L495 AbstractCegarLoop]: Abstraction has 1327 states and 1874 transitions. [2023-02-14 02:19:49,024 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 02:19:49,024 INFO L276 IsEmpty]: Start isEmpty. Operand 1327 states and 1874 transitions. [2023-02-14 02:19:49,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-02-14 02:19:49,025 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:19:49,025 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 02:19:49,046 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 02:19:49,245 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 02:19:49,433 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 02:19:49,433 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 02:19:49,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:19:49,433 INFO L85 PathProgramCache]: Analyzing trace with hash -3613151, now seen corresponding path program 1 times [2023-02-14 02:19:49,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 02:19:49,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1304144518] [2023-02-14 02:19:49,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:19:49,434 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 02:19:49,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 02:19:49,436 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 02:19:49,437 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 02:19:50,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:19:51,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 893 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-14 02:19:51,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:19:51,282 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-02-14 02:19:51,282 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 02:19:51,326 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 02:19:51,381 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 02:19:51,381 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 02:19:51,381 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 02:19:51,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1304144518] [2023-02-14 02:19:51,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1304144518] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 02:19:51,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 02:19:51,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-14 02:19:51,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360815288] [2023-02-14 02:19:51,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 02:19:51,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-14 02:19:51,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 02:19:51,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-14 02:19:51,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-14 02:19:51,383 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 02:19:53,403 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-14 02:19:54,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 02:19:54,834 INFO L93 Difference]: Finished difference Result 1502 states and 1886 transitions. [2023-02-14 02:19:54,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-14 02:19:54,835 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 02:19:54,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 02:19:54,838 INFO L225 Difference]: With dead ends: 1502 [2023-02-14 02:19:54,838 INFO L226 Difference]: Without dead ends: 1502 [2023-02-14 02:19:54,838 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 02:19:54,839 INFO L413 NwaCegarLoop]: 698 mSDtfsCounter, 717 mSDsluCounter, 989 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s 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, 3.4s IncrementalHoareTripleChecker+Time [2023-02-14 02:19:54,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [717 Valid, 1687 Invalid, 759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 754 Invalid, 1 Unknown, 0 Unchecked, 3.4s Time] [2023-02-14 02:19:54,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1502 states. [2023-02-14 02:19:54,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1502 to 1325. [2023-02-14 02:19:54,870 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 02:19:54,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1325 states to 1325 states and 1872 transitions. [2023-02-14 02:19:54,872 INFO L78 Accepts]: Start accepts. Automaton has 1325 states and 1872 transitions. Word has length 88 [2023-02-14 02:19:54,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 02:19:54,872 INFO L495 AbstractCegarLoop]: Abstraction has 1325 states and 1872 transitions. [2023-02-14 02:19:54,872 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 02:19:54,873 INFO L276 IsEmpty]: Start isEmpty. Operand 1325 states and 1872 transitions. [2023-02-14 02:19:54,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-02-14 02:19:54,873 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:19:54,873 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 02:19:54,891 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 02:19:55,088 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 02:19:55,088 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 02:19:55,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:19:55,089 INFO L85 PathProgramCache]: Analyzing trace with hash -3613150, now seen corresponding path program 1 times [2023-02-14 02:19:55,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 02:19:55,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [7532760] [2023-02-14 02:19:55,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:19:55,090 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 02:19:55,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 02:19:55,091 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 02:19:55,093 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 02:19:56,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:19:56,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 893 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-14 02:19:56,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:19:57,086 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-02-14 02:19:57,087 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 02:19:57,294 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 02:19:57,294 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 02:19:57,294 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 02:19:57,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [7532760] [2023-02-14 02:19:57,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [7532760] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 02:19:57,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 02:19:57,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-14 02:19:57,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572468429] [2023-02-14 02:19:57,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 02:19:57,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-14 02:19:57,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 02:19:57,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-14 02:19:57,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-14 02:19:57,295 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 02:19:59,319 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 02:20:00,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 02:20:00,616 INFO L93 Difference]: Finished difference Result 1376 states and 1879 transitions. [2023-02-14 02:20:00,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-14 02:20:00,619 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 02:20:00,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 02:20:00,622 INFO L225 Difference]: With dead ends: 1376 [2023-02-14 02:20:00,622 INFO L226 Difference]: Without dead ends: 1376 [2023-02-14 02:20:00,622 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 02:20:00,622 INFO L413 NwaCegarLoop]: 763 mSDtfsCounter, 123 mSDsluCounter, 1085 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 1848 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-02-14 02:20:00,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 1848 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 516 Invalid, 1 Unknown, 0 Unchecked, 3.3s Time] [2023-02-14 02:20:00,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1376 states. [2023-02-14 02:20:00,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1376 to 1323. [2023-02-14 02:20:00,644 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 02:20:00,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1323 states to 1323 states and 1869 transitions. [2023-02-14 02:20:00,647 INFO L78 Accepts]: Start accepts. Automaton has 1323 states and 1869 transitions. Word has length 88 [2023-02-14 02:20:00,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 02:20:00,647 INFO L495 AbstractCegarLoop]: Abstraction has 1323 states and 1869 transitions. [2023-02-14 02:20:00,647 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 02:20:00,648 INFO L276 IsEmpty]: Start isEmpty. Operand 1323 states and 1869 transitions. [2023-02-14 02:20:00,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-02-14 02:20:00,648 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:20:00,648 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 02:20:00,669 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 02:20:00,865 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 02:20:00,865 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 02:20:00,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:20:00,866 INFO L85 PathProgramCache]: Analyzing trace with hash -112007323, now seen corresponding path program 1 times [2023-02-14 02:20:00,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 02:20:00,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1767971306] [2023-02-14 02:20:00,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:20:00,866 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 02:20:00,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 02:20:00,868 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 02:20:00,869 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 02:20:02,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:20:02,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 906 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-14 02:20:02,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:20:02,688 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-02-14 02:20:02,688 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 02:20:02,730 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 02:20:02,798 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 02:20:02,798 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 02:20:02,798 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 02:20:02,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1767971306] [2023-02-14 02:20:02,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1767971306] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 02:20:02,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 02:20:02,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 02:20:02,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023070243] [2023-02-14 02:20:02,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 02:20:02,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-14 02:20:02,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 02:20:02,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-14 02:20:02,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-14 02:20:02,799 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 02:20:04,822 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 02:20:06,829 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 02:20:08,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 02:20:08,592 INFO L93 Difference]: Finished difference Result 1498 states and 1881 transitions. [2023-02-14 02:20:08,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-14 02:20:08,593 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 02:20:08,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 02:20:08,615 INFO L225 Difference]: With dead ends: 1498 [2023-02-14 02:20:08,628 INFO L226 Difference]: Without dead ends: 1498 [2023-02-14 02:20:08,629 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 02:20:08,629 INFO L413 NwaCegarLoop]: 668 mSDtfsCounter, 1076 mSDsluCounter, 1341 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 58 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s 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, 5.7s IncrementalHoareTripleChecker+Time [2023-02-14 02:20:08,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1076 Valid, 2009 Invalid, 1141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 1081 Invalid, 2 Unknown, 0 Unchecked, 5.7s Time] [2023-02-14 02:20:08,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1498 states. [2023-02-14 02:20:08,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1498 to 1321. [2023-02-14 02:20:08,643 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 02:20:08,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1321 states to 1321 states and 1867 transitions. [2023-02-14 02:20:08,645 INFO L78 Accepts]: Start accepts. Automaton has 1321 states and 1867 transitions. Word has length 89 [2023-02-14 02:20:08,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 02:20:08,645 INFO L495 AbstractCegarLoop]: Abstraction has 1321 states and 1867 transitions. [2023-02-14 02:20:08,646 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 02:20:08,646 INFO L276 IsEmpty]: Start isEmpty. Operand 1321 states and 1867 transitions. [2023-02-14 02:20:08,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-02-14 02:20:08,647 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:20:08,647 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 02:20:08,665 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Ended with exit code 0 [2023-02-14 02:20:08,863 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 02:20:08,863 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 02:20:08,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:20:08,864 INFO L85 PathProgramCache]: Analyzing trace with hash -112007322, now seen corresponding path program 1 times [2023-02-14 02:20:08,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 02:20:08,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1839821655] [2023-02-14 02:20:08,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:20:08,865 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 02:20:08,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 02:20:08,867 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 02:20:08,893 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 02:20:10,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:20:10,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 906 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-14 02:20:10,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:20:10,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 02:20:10,830 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 02:20:10,963 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 02:20:10,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 02:20:11,690 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 02:20:11,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1839821655] [2023-02-14 02:20:11,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1839821655] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 02:20:11,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [31017661] [2023-02-14 02:20:11,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:20:11,691 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-02-14 02:20:11,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-02-14 02:20:11,692 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 02:20:11,693 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 02:20:13,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:20:13,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 906 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-14 02:20:14,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:20:14,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 02:20:14,434 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 02:20:14,535 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 02:20:14,536 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 02:20:14,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [31017661] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 02:20:14,777 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-14 02:20:14,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2023-02-14 02:20:14,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581351800] [2023-02-14 02:20:14,777 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-14 02:20:14,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-14 02:20:14,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 02:20:14,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-14 02:20:14,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-02-14 02:20:14,778 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 02:20:16,804 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 02:20:19,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 02:20:19,331 INFO L93 Difference]: Finished difference Result 1565 states and 1893 transitions. [2023-02-14 02:20:19,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-14 02:20:19,332 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 02:20:19,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 02:20:19,335 INFO L225 Difference]: With dead ends: 1565 [2023-02-14 02:20:19,335 INFO L226 Difference]: Without dead ends: 1565 [2023-02-14 02:20:19,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 225 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-02-14 02:20:19,349 INFO L413 NwaCegarLoop]: 579 mSDtfsCounter, 1368 mSDsluCounter, 1286 mSDsCounter, 0 mSdLazyCounter, 1251 mSolverCounterSat, 78 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s 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, 4.5s IncrementalHoareTripleChecker+Time [2023-02-14 02:20:19,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1368 Valid, 1865 Invalid, 1330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1251 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2023-02-14 02:20:19,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1565 states. [2023-02-14 02:20:19,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1565 to 1319. [2023-02-14 02:20:19,362 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 02:20:19,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 1865 transitions. [2023-02-14 02:20:19,364 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 1865 transitions. Word has length 89 [2023-02-14 02:20:19,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 02:20:19,364 INFO L495 AbstractCegarLoop]: Abstraction has 1319 states and 1865 transitions. [2023-02-14 02:20:19,364 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 02:20:19,364 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 1865 transitions. [2023-02-14 02:20:19,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-02-14 02:20:19,365 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:20:19,365 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 02:20:19,397 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 02:20:19,591 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 02:20:19,789 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 02:20:19,789 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 02:20:19,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:20:19,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1939903835, now seen corresponding path program 1 times [2023-02-14 02:20:19,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 02:20:19,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [706227209] [2023-02-14 02:20:19,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:20:19,791 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 02:20:19,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 02:20:19,797 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 02:20:19,798 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 02:20:20,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:20:20,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 948 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-14 02:20:20,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:20:20,547 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 02:20:20,548 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 02:20:20,548 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 02:20:20,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [706227209] [2023-02-14 02:20:20,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [706227209] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 02:20:20,548 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 02:20:20,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-14 02:20:20,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130153182] [2023-02-14 02:20:20,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 02:20:20,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-14 02:20:20,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 02:20:20,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-14 02:20:20,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-14 02:20:20,550 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 02:20:22,568 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-14 02:20:24,573 WARN L539 Checker$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 02:20:26,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 02:20:26,254 INFO L93 Difference]: Finished difference Result 1494 states and 1877 transitions. [2023-02-14 02:20:26,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-14 02:20:26,255 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 02:20:26,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 02:20:26,257 INFO L225 Difference]: With dead ends: 1494 [2023-02-14 02:20:26,257 INFO L226 Difference]: Without dead ends: 1494 [2023-02-14 02:20:26,257 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 02:20:26,258 INFO L413 NwaCegarLoop]: 692 mSDtfsCounter, 790 mSDsluCounter, 1496 mSDsCounter, 0 mSdLazyCounter, 1094 mSolverCounterSat, 10 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s 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, 5.7s IncrementalHoareTripleChecker+Time [2023-02-14 02:20:26,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [791 Valid, 2188 Invalid, 1106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1094 Invalid, 2 Unknown, 0 Unchecked, 5.7s Time] [2023-02-14 02:20:26,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1494 states. [2023-02-14 02:20:26,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1494 to 1317. [2023-02-14 02:20:26,288 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 02:20:26,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1317 states to 1317 states and 1863 transitions. [2023-02-14 02:20:26,291 INFO L78 Accepts]: Start accepts. Automaton has 1317 states and 1863 transitions. Word has length 96 [2023-02-14 02:20:26,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 02:20:26,291 INFO L495 AbstractCegarLoop]: Abstraction has 1317 states and 1863 transitions. [2023-02-14 02:20:26,291 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 02:20:26,291 INFO L276 IsEmpty]: Start isEmpty. Operand 1317 states and 1863 transitions. [2023-02-14 02:20:26,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-02-14 02:20:26,292 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:20:26,292 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 02:20:26,318 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 02:20:26,509 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 02:20:26,510 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 02:20:26,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:20:26,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1939903834, now seen corresponding path program 1 times [2023-02-14 02:20:26,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 02:20:26,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [598369055] [2023-02-14 02:20:26,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:20:26,511 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 02:20:26,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 02:20:26,512 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 02:20:26,514 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 02:20:28,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:20:28,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 948 conjuncts, 13 conjunts are in the unsatisfiable core [2023-02-14 02:20:28,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:20:28,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 02:20:28,939 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 02:20:29,243 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 02:20:29,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 02:20:29,805 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 02:20:29,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [598369055] [2023-02-14 02:20:29,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [598369055] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 02:20:29,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1447488294] [2023-02-14 02:20:29,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:20:29,806 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-02-14 02:20:29,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-02-14 02:20:29,807 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 02:20:29,826 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 02:20:32,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:20:32,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 948 conjuncts, 14 conjunts are in the unsatisfiable core [2023-02-14 02:20:32,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:20:32,858 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-02-14 02:20:32,859 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 02:20:32,983 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 02:20:33,270 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-02-14 02:20:33,271 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 02:20:33,298 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 02:20:33,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 02:20:33,649 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 02:20:36,392 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 02:20:36,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1447488294] provided 1 perfect and 1 imperfect interpolant sequences [2023-02-14 02:20:36,392 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-02-14 02:20:36,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [5, 8] total 17 [2023-02-14 02:20:36,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339370075] [2023-02-14 02:20:36,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 02:20:36,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-14 02:20:36,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 02:20:36,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-14 02:20:36,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=282, Unknown=1, NotChecked=0, Total=342 [2023-02-14 02:20:36,394 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 02:20:38,415 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-14 02:20:40,420 WARN L539 Checker$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 02:20:42,424 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 []