./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outw_p.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 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_outw_p.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7b53e6434f29888ec2b0851eb0bdc5bf356c532d72069865339d3ff2265f37df --- Real Ultimate output --- This is Ultimate 0.2.2-?-2329fc7 [2023-02-14 02:15:51,000 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-14 02:15:51,001 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-14 02:15:51,034 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-14 02:15:51,034 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-14 02:15:51,035 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-14 02:15:51,036 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-14 02:15:51,037 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-14 02:15:51,038 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-14 02:15:51,038 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-14 02:15:51,039 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-14 02:15:51,041 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-14 02:15:51,041 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-14 02:15:51,046 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-14 02:15:51,047 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-14 02:15:51,048 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-14 02:15:51,049 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-14 02:15:51,050 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-14 02:15:51,052 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-14 02:15:51,053 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-14 02:15:51,053 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-14 02:15:51,057 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-14 02:15:51,057 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-14 02:15:51,058 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-14 02:15:51,062 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-14 02:15:51,063 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-14 02:15:51,063 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-14 02:15:51,064 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-14 02:15:51,065 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-14 02:15:51,065 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-14 02:15:51,066 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-14 02:15:51,066 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-14 02:15:51,067 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-14 02:15:51,068 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-14 02:15:51,070 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-14 02:15:51,070 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-14 02:15:51,070 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-14 02:15:51,070 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-14 02:15:51,070 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-14 02:15:51,071 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-14 02:15:51,072 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-14 02:15:51,073 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-02-14 02:15:51,091 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-14 02:15:51,095 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-14 02:15:51,095 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-14 02:15:51,095 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-14 02:15:51,096 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-14 02:15:51,096 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-14 02:15:51,096 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-14 02:15:51,097 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-14 02:15:51,097 INFO L138 SettingsManager]: * Use SBE=true [2023-02-14 02:15:51,097 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-14 02:15:51,098 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-14 02:15:51,098 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-14 02:15:51,098 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-14 02:15:51,098 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-14 02:15:51,098 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-14 02:15:51,098 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-14 02:15:51,098 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-14 02:15:51,099 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-14 02:15:51,099 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-14 02:15:51,099 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-14 02:15:51,099 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-14 02:15:51,099 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-14 02:15:51,099 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-14 02:15:51,100 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-14 02:15:51,100 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-14 02:15:51,100 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 02:15:51,100 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-14 02:15:51,100 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-14 02:15:51,100 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-14 02:15:51,101 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-14 02:15:51,101 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-14 02:15:51,101 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-14 02:15:51,101 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-14 02:15:51,101 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-14 02:15:51,101 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7b53e6434f29888ec2b0851eb0bdc5bf356c532d72069865339d3ff2265f37df [2023-02-14 02:15:51,284 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-14 02:15:51,309 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-14 02:15:51,312 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-14 02:15:51,312 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-14 02:15:51,313 INFO L275 PluginConnector]: CDTParser initialized [2023-02-14 02:15:51,313 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outw_p.i [2023-02-14 02:15:52,409 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-14 02:15:52,653 INFO L351 CDTParser]: Found 1 translation units. [2023-02-14 02:15:52,653 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outw_p.i [2023-02-14 02:15:52,687 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19b9183d5/78f7b1dd26af4dc1976834e4159f2af5/FLAG3589baeed [2023-02-14 02:15:52,700 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19b9183d5/78f7b1dd26af4dc1976834e4159f2af5 [2023-02-14 02:15:52,702 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-14 02:15:52,703 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-14 02:15:52,704 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-14 02:15:52,704 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-14 02:15:52,707 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-14 02:15:52,707 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 02:15:52" (1/1) ... [2023-02-14 02:15:52,712 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65f50f3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:15:52, skipping insertion in model container [2023-02-14 02:15:52,713 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 02:15:52" (1/1) ... [2023-02-14 02:15:52,718 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-14 02:15:52,784 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-14 02:15:52,912 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outw_p.i[458,471] [2023-02-14 02:15:53,328 WARN L623 FunctionHandler]: Unknown extern function misc_register [2023-02-14 02:15:53,329 WARN L623 FunctionHandler]: Unknown extern function register_reboot_notifier [2023-02-14 02:15:53,331 WARN L623 FunctionHandler]: Unknown extern function misc_deregister [2023-02-14 02:15:53,334 WARN L623 FunctionHandler]: Unknown extern function misc_deregister [2023-02-14 02:15:53,334 WARN L623 FunctionHandler]: Unknown extern function unregister_reboot_notifier [2023-02-14 02:15:53,444 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_nondet_sector_t [2023-02-14 02:15:53,579 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 02:15:53,607 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 02:15:53,607 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@13391129 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:15:53, skipping insertion in model container [2023-02-14 02:15:53,610 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-14 02:15:53,611 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-02-14 02:15:53,612 INFO L158 Benchmark]: Toolchain (without parser) took 908.61ms. Allocated memory is still 151.0MB. Free memory was 102.3MB in the beginning and 104.5MB in the end (delta: -2.2MB). Peak memory consumption was 37.1MB. Max. memory is 16.1GB. [2023-02-14 02:15:53,613 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 109.1MB. Free memory is still 60.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-14 02:15:53,613 INFO L158 Benchmark]: CACSL2BoogieTranslator took 907.10ms. Allocated memory is still 151.0MB. Free memory was 102.3MB in the beginning and 104.5MB in the end (delta: -2.2MB). Peak memory consumption was 37.1MB. Max. memory is 16.1GB. [2023-02-14 02:15:53,614 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 109.1MB. Free memory is still 60.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 907.10ms. Allocated memory is still 151.0MB. Free memory was 102.3MB in the beginning and 104.5MB in the end (delta: -2.2MB). Peak memory consumption was 37.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2975]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outw_p.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7b53e6434f29888ec2b0851eb0bdc5bf356c532d72069865339d3ff2265f37df --- Real Ultimate output --- This is Ultimate 0.2.2-?-2329fc7 [2023-02-14 02:15:55,177 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-14 02:15:55,179 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-14 02:15:55,215 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-14 02:15:55,215 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-14 02:15:55,217 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-14 02:15:55,219 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-14 02:15:55,221 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-14 02:15:55,224 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-14 02:15:55,227 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-14 02:15:55,228 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-14 02:15:55,230 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-14 02:15:55,230 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-14 02:15:55,231 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-14 02:15:55,232 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-14 02:15:55,234 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-14 02:15:55,235 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-14 02:15:55,236 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-14 02:15:55,237 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-14 02:15:55,241 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-14 02:15:55,241 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-14 02:15:55,242 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-14 02:15:55,243 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-14 02:15:55,243 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-14 02:15:55,248 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-14 02:15:55,248 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-14 02:15:55,248 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-14 02:15:55,250 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-14 02:15:55,250 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-14 02:15:55,251 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-14 02:15:55,251 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-14 02:15:55,252 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-14 02:15:55,253 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-14 02:15:55,253 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-14 02:15:55,254 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-14 02:15:55,254 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-14 02:15:55,255 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-14 02:15:55,255 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-14 02:15:55,255 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-14 02:15:55,256 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-14 02:15:55,256 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-14 02:15:55,257 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-02-14 02:15:55,282 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-14 02:15:55,282 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-14 02:15:55,283 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-14 02:15:55,283 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-14 02:15:55,284 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-14 02:15:55,284 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-14 02:15:55,285 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-14 02:15:55,285 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-14 02:15:55,285 INFO L138 SettingsManager]: * Use SBE=true [2023-02-14 02:15:55,285 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-14 02:15:55,286 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-14 02:15:55,286 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-14 02:15:55,286 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-14 02:15:55,286 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-14 02:15:55,286 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-14 02:15:55,286 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-14 02:15:55,287 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-14 02:15:55,287 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-14 02:15:55,287 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-14 02:15:55,287 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-14 02:15:55,287 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-02-14 02:15:55,287 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-02-14 02:15:55,287 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-14 02:15:55,288 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-14 02:15:55,288 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-14 02:15:55,288 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-14 02:15:55,288 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-14 02:15:55,288 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 02:15:55,288 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-14 02:15:55,289 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-14 02:15:55,289 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-02-14 02:15:55,289 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-02-14 02:15:55,289 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-14 02:15:55,289 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-14 02:15:55,289 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-14 02:15:55,290 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-02-14 02:15:55,290 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-14 02:15:55,290 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7b53e6434f29888ec2b0851eb0bdc5bf356c532d72069865339d3ff2265f37df [2023-02-14 02:15:55,535 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-14 02:15:55,547 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-14 02:15:55,550 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-14 02:15:55,551 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-14 02:15:55,551 INFO L275 PluginConnector]: CDTParser initialized [2023-02-14 02:15:55,552 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outw_p.i [2023-02-14 02:15:56,463 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-14 02:15:56,785 INFO L351 CDTParser]: Found 1 translation units. [2023-02-14 02:15:56,786 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outw_p.i [2023-02-14 02:15:56,807 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ae2bcd7b/bd9ecdf1cb4a4301980f7a929a08927e/FLAG4b5c19097 [2023-02-14 02:15:56,819 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ae2bcd7b/bd9ecdf1cb4a4301980f7a929a08927e [2023-02-14 02:15:56,821 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-14 02:15:56,822 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-14 02:15:56,823 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-14 02:15:56,824 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-14 02:15:56,826 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-14 02:15:56,826 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 02:15:56" (1/1) ... [2023-02-14 02:15:56,827 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21c46345 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:15:56, skipping insertion in model container [2023-02-14 02:15:56,827 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 02:15:56" (1/1) ... [2023-02-14 02:15:56,832 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-14 02:15:56,899 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-14 02:15:57,040 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outw_p.i[458,471] [2023-02-14 02:15:57,566 WARN L623 FunctionHandler]: Unknown extern function misc_register [2023-02-14 02:15:57,567 WARN L623 FunctionHandler]: Unknown extern function register_reboot_notifier [2023-02-14 02:15:57,570 WARN L623 FunctionHandler]: Unknown extern function misc_deregister [2023-02-14 02:15:57,572 WARN L623 FunctionHandler]: Unknown extern function misc_deregister [2023-02-14 02:15:57,572 WARN L623 FunctionHandler]: Unknown extern function unregister_reboot_notifier [2023-02-14 02:15:57,695 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_nondet_sector_t [2023-02-14 02:15:57,820 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 02:15:57,849 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-02-14 02:15:57,866 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-14 02:15:57,868 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outw_p.i[458,471] [2023-02-14 02:15:57,905 WARN L623 FunctionHandler]: Unknown extern function misc_register [2023-02-14 02:15:57,905 WARN L623 FunctionHandler]: Unknown extern function register_reboot_notifier [2023-02-14 02:15:57,906 WARN L623 FunctionHandler]: Unknown extern function misc_deregister [2023-02-14 02:15:57,908 WARN L623 FunctionHandler]: Unknown extern function misc_deregister [2023-02-14 02:15:57,908 WARN L623 FunctionHandler]: Unknown extern function unregister_reboot_notifier [2023-02-14 02:15:57,929 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_nondet_sector_t [2023-02-14 02:15:57,976 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 02:15:57,987 INFO L203 MainTranslator]: Completed pre-run [2023-02-14 02:15:57,995 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outw_p.i[458,471] [2023-02-14 02:15:58,027 WARN L623 FunctionHandler]: Unknown extern function misc_register [2023-02-14 02:15:58,027 WARN L623 FunctionHandler]: Unknown extern function register_reboot_notifier [2023-02-14 02:15:58,028 WARN L623 FunctionHandler]: Unknown extern function misc_deregister [2023-02-14 02:15:58,028 WARN L623 FunctionHandler]: Unknown extern function misc_deregister [2023-02-14 02:15:58,028 WARN L623 FunctionHandler]: Unknown extern function unregister_reboot_notifier [2023-02-14 02:15:58,038 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_nondet_sector_t [2023-02-14 02:15:58,093 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 02:15:58,213 INFO L208 MainTranslator]: Completed translation [2023-02-14 02:15:58,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:15:58 WrapperNode [2023-02-14 02:15:58,214 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-14 02:15:58,215 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-14 02:15:58,215 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-14 02:15:58,215 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-14 02:15:58,220 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:15:58" (1/1) ... [2023-02-14 02:15:58,292 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:15:58" (1/1) ... [2023-02-14 02:15:58,334 INFO L138 Inliner]: procedures = 482, calls = 839, calls flagged for inlining = 54, calls inlined = 37, statements flattened = 966 [2023-02-14 02:15:58,334 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-14 02:15:58,335 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-14 02:15:58,335 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-14 02:15:58,335 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-14 02:15:58,342 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:15:58" (1/1) ... [2023-02-14 02:15:58,342 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:15:58" (1/1) ... [2023-02-14 02:15:58,370 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:15:58" (1/1) ... [2023-02-14 02:15:58,370 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:15:58" (1/1) ... [2023-02-14 02:15:58,410 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:15:58" (1/1) ... [2023-02-14 02:15:58,415 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:15:58" (1/1) ... [2023-02-14 02:15:58,428 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:15:58" (1/1) ... [2023-02-14 02:15:58,433 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:15:58" (1/1) ... [2023-02-14 02:15:58,440 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-14 02:15:58,441 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-14 02:15:58,441 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-14 02:15:58,441 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-14 02:15:58,442 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:15:58" (1/1) ... [2023-02-14 02:15:58,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 02:15:58,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 02:15:58,468 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 02:15:58,477 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 02:15:58,500 INFO L130 BoogieDeclarations]: Found specification of procedure zf_timer_off [2023-02-14 02:15:58,500 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_timer_off [2023-02-14 02:15:58,500 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~C_UINT~X~C_ULONG~TO~C_INT [2023-02-14 02:15:58,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~C_UINT~X~C_ULONG~TO~C_INT [2023-02-14 02:15:58,501 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-02-14 02:15:58,501 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_atomic_begin [2023-02-14 02:15:58,501 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-02-14 02:15:58,501 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-02-14 02:15:58,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-14 02:15:58,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2023-02-14 02:15:58,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-02-14 02:15:58,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-02-14 02:15:58,502 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2023-02-14 02:15:58,502 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2023-02-14 02:15:58,502 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-02-14 02:15:58,502 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_atomic_end [2023-02-14 02:15:58,502 INFO L130 BoogieDeclarations]: Found specification of procedure zf_get_control [2023-02-14 02:15:58,502 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_get_control [2023-02-14 02:15:58,502 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2023-02-14 02:15:58,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2023-02-14 02:15:58,503 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-14 02:15:58,503 INFO L130 BoogieDeclarations]: Found specification of procedure request_region [2023-02-14 02:15:58,503 INFO L138 BoogieDeclarations]: Found implementation of procedure request_region [2023-02-14 02:15:58,503 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-14 02:15:58,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-14 02:15:58,503 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-02-14 02:15:58,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-02-14 02:15:58,503 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irqsave [2023-02-14 02:15:58,504 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irqsave [2023-02-14 02:15:58,504 INFO L130 BoogieDeclarations]: Found specification of procedure release_region [2023-02-14 02:15:58,504 INFO L138 BoogieDeclarations]: Found implementation of procedure release_region [2023-02-14 02:15:58,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-14 02:15:58,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-14 02:15:58,505 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_init [2023-02-14 02:15:58,505 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_init [2023-02-14 02:15:58,505 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2023-02-14 02:15:58,505 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-02-14 02:15:58,508 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2023-02-14 02:15:58,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-02-14 02:15:58,508 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-02-14 02:15:58,508 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-02-14 02:15:58,508 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2023-02-14 02:15:58,508 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2023-02-14 02:15:58,508 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-14 02:15:58,509 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-14 02:15:58,509 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2023-02-14 02:15:58,509 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2023-02-14 02:15:58,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2023-02-14 02:15:58,509 INFO L130 BoogieDeclarations]: Found specification of procedure cdev_add [2023-02-14 02:15:58,509 INFO L138 BoogieDeclarations]: Found implementation of procedure cdev_add [2023-02-14 02:15:58,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2023-02-14 02:15:58,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2023-02-14 02:15:58,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-02-14 02:15:58,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-02-14 02:15:58,510 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-02-14 02:15:58,510 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-02-14 02:15:58,510 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2023-02-14 02:15:58,510 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2023-02-14 02:15:58,510 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2023-02-14 02:15:58,510 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2023-02-14 02:15:58,511 INFO L130 BoogieDeclarations]: Found specification of procedure misc_deregister [2023-02-14 02:15:58,511 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_deregister [2023-02-14 02:15:58,511 INFO L130 BoogieDeclarations]: Found specification of procedure assert_context_process [2023-02-14 02:15:58,511 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_context_process [2023-02-14 02:15:58,511 INFO L130 BoogieDeclarations]: Found specification of procedure zf_set_control [2023-02-14 02:15:58,512 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_set_control [2023-02-14 02:15:58,512 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~C_ULONG~X~$Pointer$~TO~C_LONG [2023-02-14 02:15:58,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~C_ULONG~X~$Pointer$~TO~C_LONG [2023-02-14 02:15:58,512 INFO L130 BoogieDeclarations]: Found specification of procedure zf_readw [2023-02-14 02:15:58,513 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_readw [2023-02-14 02:15:58,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2023-02-14 02:15:58,513 INFO L130 BoogieDeclarations]: Found specification of procedure zf_ping [2023-02-14 02:15:58,513 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_ping [2023-02-14 02:15:58,513 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2023-02-14 02:15:58,514 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2023-02-14 02:15:58,514 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~C_ULONG~TO~VOID [2023-02-14 02:15:58,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~C_ULONG~TO~VOID [2023-02-14 02:15:58,824 INFO L235 CfgBuilder]: Building ICFG [2023-02-14 02:15:58,828 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-14 02:16:02,985 INFO L276 CfgBuilder]: Performing block encoding [2023-02-14 02:16:02,995 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-14 02:16:02,996 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2023-02-14 02:16:02,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 02:16:02 BoogieIcfgContainer [2023-02-14 02:16:02,998 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-14 02:16:02,999 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-14 02:16:02,999 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-14 02:16:03,002 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-14 02:16:03,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.02 02:15:56" (1/3) ... [2023-02-14 02:16:03,003 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31a4f243 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 02:16:03, skipping insertion in model container [2023-02-14 02:16:03,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 02:15:58" (2/3) ... [2023-02-14 02:16:03,003 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31a4f243 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 02:16:03, skipping insertion in model container [2023-02-14 02:16:03,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 02:16:02" (3/3) ... [2023-02-14 02:16:03,004 INFO L112 eAbstractionObserver]: Analyzing ICFG ddv_machzwd_outw_p.i [2023-02-14 02:16:03,017 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-14 02:16:03,017 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 205 error locations. [2023-02-14 02:16:03,053 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-14 02:16:03,057 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;@4bd7e72d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-14 02:16:03,057 INFO L358 AbstractCegarLoop]: Starting to check reachability of 205 error locations. [2023-02-14 02:16:03,062 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 02:16:03,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-02-14 02:16:03,066 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:16:03,067 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-02-14 02:16:03,067 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 02:16:03,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:16:03,070 INFO L85 PathProgramCache]: Analyzing trace with hash 327228190, now seen corresponding path program 1 times [2023-02-14 02:16:03,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 02:16:03,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [992025322] [2023-02-14 02:16:03,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:16:03,088 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 02:16:03,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 02:16:03,091 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 02:16:03,111 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 02:16:03,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:16:03,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-14 02:16:03,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:16:03,528 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 02:16:03,528 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 02:16:03,528 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 02:16:03,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [992025322] [2023-02-14 02:16:03,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [992025322] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 02:16:03,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 02:16:03,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 02:16:03,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091912587] [2023-02-14 02:16:03,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 02:16:03,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-14 02:16:03,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 02:16:03,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-14 02:16:03,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-14 02:16:03,565 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 02:16:05,590 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-14 02:16:07,595 WARN L539 Checker$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 02:16:09,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 02:16:09,453 INFO L93 Difference]: Finished difference Result 1200 states and 1437 transitions. [2023-02-14 02:16:09,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-14 02:16:09,456 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 02:16:09,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 02:16:09,467 INFO L225 Difference]: With dead ends: 1200 [2023-02-14 02:16:09,467 INFO L226 Difference]: Without dead ends: 1196 [2023-02-14 02:16:09,468 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 02:16:09,470 INFO L413 NwaCegarLoop]: 753 mSDtfsCounter, 684 mSDsluCounter, 1710 mSDsCounter, 0 mSdLazyCounter, 1106 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 685 SdHoareTripleChecker+Valid, 2463 SdHoareTripleChecker+Invalid, 1112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1106 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-02-14 02:16:09,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [685 Valid, 2463 Invalid, 1112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1106 Invalid, 2 Unknown, 0 Unchecked, 5.8s Time] [2023-02-14 02:16:09,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1196 states. [2023-02-14 02:16:09,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1196 to 983. [2023-02-14 02:16:09,527 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 02:16:09,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 983 states to 983 states and 1341 transitions. [2023-02-14 02:16:09,533 INFO L78 Accepts]: Start accepts. Automaton has 983 states and 1341 transitions. Word has length 5 [2023-02-14 02:16:09,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 02:16:09,533 INFO L495 AbstractCegarLoop]: Abstraction has 983 states and 1341 transitions. [2023-02-14 02:16:09,533 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 02:16:09,534 INFO L276 IsEmpty]: Start isEmpty. Operand 983 states and 1341 transitions. [2023-02-14 02:16:09,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-02-14 02:16:09,534 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:16:09,534 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-02-14 02:16:09,557 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 02:16:09,747 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 02:16:09,747 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 02:16:09,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:16:09,747 INFO L85 PathProgramCache]: Analyzing trace with hash 327228191, now seen corresponding path program 1 times [2023-02-14 02:16:09,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 02:16:09,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1629673308] [2023-02-14 02:16:09,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:16:09,748 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 02:16:09,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 02:16:09,750 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 02:16:09,752 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 02:16:10,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:16:10,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-14 02:16:10,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:16:10,110 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 02:16:10,110 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 02:16:10,110 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 02:16:10,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1629673308] [2023-02-14 02:16:10,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1629673308] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 02:16:10,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 02:16:10,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 02:16:10,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253304463] [2023-02-14 02:16:10,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 02:16:10,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-14 02:16:10,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 02:16:10,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-14 02:16:10,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-14 02:16:10,113 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 02:16:12,129 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-14 02:16:14,134 WARN L539 Checker$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 02:16:15,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 02:16:15,719 INFO L93 Difference]: Finished difference Result 1115 states and 1433 transitions. [2023-02-14 02:16:15,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-14 02:16:15,719 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 02:16:15,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 02:16:15,725 INFO L225 Difference]: With dead ends: 1115 [2023-02-14 02:16:15,725 INFO L226 Difference]: Without dead ends: 1115 [2023-02-14 02:16:15,725 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 02:16:15,726 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 02:16:15,730 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 02:16:15,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1115 states. [2023-02-14 02:16:15,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1115 to 1056. [2023-02-14 02:16:15,787 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 02:16:15,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1056 states to 1056 states and 1429 transitions. [2023-02-14 02:16:15,793 INFO L78 Accepts]: Start accepts. Automaton has 1056 states and 1429 transitions. Word has length 5 [2023-02-14 02:16:15,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 02:16:15,794 INFO L495 AbstractCegarLoop]: Abstraction has 1056 states and 1429 transitions. [2023-02-14 02:16:15,795 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 02:16:15,795 INFO L276 IsEmpty]: Start isEmpty. Operand 1056 states and 1429 transitions. [2023-02-14 02:16:15,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-02-14 02:16:15,796 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:16:15,796 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 02:16:15,809 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-02-14 02:16:16,006 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 02:16:16,007 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 02:16:16,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:16:16,008 INFO L85 PathProgramCache]: Analyzing trace with hash -27521378, now seen corresponding path program 1 times [2023-02-14 02:16:16,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 02:16:16,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [228792411] [2023-02-14 02:16:16,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:16:16,009 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 02:16:16,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 02:16:16,010 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 02:16:16,012 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 02:16:16,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:16:16,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-14 02:16:16,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:16:16,378 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 02:16:16,379 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 02:16:16,379 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 02:16:16,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [228792411] [2023-02-14 02:16:16,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [228792411] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 02:16:16,379 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 02:16:16,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-02-14 02:16:16,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309158498] [2023-02-14 02:16:16,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 02:16:16,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 02:16:16,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 02:16:16,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 02:16:16,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 02:16:16,381 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 02:16:17,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 02:16:17,246 INFO L93 Difference]: Finished difference Result 1262 states and 1516 transitions. [2023-02-14 02:16:17,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 02:16:17,246 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 02:16:17,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 02:16:17,250 INFO L225 Difference]: With dead ends: 1262 [2023-02-14 02:16:17,250 INFO L226 Difference]: Without dead ends: 1262 [2023-02-14 02:16:17,250 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 02:16:17,251 INFO L413 NwaCegarLoop]: 739 mSDtfsCounter, 657 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 657 SdHoareTripleChecker+Valid, 1284 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-02-14 02:16:17,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [657 Valid, 1284 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-02-14 02:16:17,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1262 states. [2023-02-14 02:16:17,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1262 to 1055. [2023-02-14 02:16:17,267 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 02:16:17,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1055 states to 1055 states and 1424 transitions. [2023-02-14 02:16:17,271 INFO L78 Accepts]: Start accepts. Automaton has 1055 states and 1424 transitions. Word has length 11 [2023-02-14 02:16:17,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 02:16:17,271 INFO L495 AbstractCegarLoop]: Abstraction has 1055 states and 1424 transitions. [2023-02-14 02:16:17,271 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 02:16:17,272 INFO L276 IsEmpty]: Start isEmpty. Operand 1055 states and 1424 transitions. [2023-02-14 02:16:17,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-02-14 02:16:17,272 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:16:17,272 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 02:16:17,295 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 02:16:17,483 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 02:16:17,484 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 02:16:17,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:16:17,484 INFO L85 PathProgramCache]: Analyzing trace with hash -27521377, now seen corresponding path program 1 times [2023-02-14 02:16:17,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 02:16:17,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1736547818] [2023-02-14 02:16:17,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:16:17,485 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 02:16:17,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 02:16:17,486 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 02:16:17,488 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 02:16:17,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:16:17,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-14 02:16:17,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:16:17,853 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 02:16:17,854 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 02:16:17,854 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 02:16:17,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1736547818] [2023-02-14 02:16:17,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1736547818] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 02:16:17,854 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 02:16:17,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-14 02:16:17,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218453741] [2023-02-14 02:16:17,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 02:16:17,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-14 02:16:17,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 02:16:17,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-14 02:16:17,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-14 02:16:17,855 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 02:16:19,872 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 02:16:21,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 02:16:21,258 INFO L93 Difference]: Finished difference Result 1121 states and 1439 transitions. [2023-02-14 02:16:21,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-14 02:16:21,259 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 02:16:21,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 02:16:21,262 INFO L225 Difference]: With dead ends: 1121 [2023-02-14 02:16:21,263 INFO L226 Difference]: Without dead ends: 1121 [2023-02-14 02:16:21,263 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 02:16:21,263 INFO L413 NwaCegarLoop]: 834 mSDtfsCounter, 259 mSDsluCounter, 1154 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 1988 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-02-14 02:16:21,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 1988 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 574 Invalid, 1 Unknown, 0 Unchecked, 3.4s Time] [2023-02-14 02:16:21,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1121 states. [2023-02-14 02:16:21,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1121 to 1058. [2023-02-14 02:16:21,283 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 02:16:21,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1058 states to 1058 states and 1427 transitions. [2023-02-14 02:16:21,286 INFO L78 Accepts]: Start accepts. Automaton has 1058 states and 1427 transitions. Word has length 11 [2023-02-14 02:16:21,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 02:16:21,287 INFO L495 AbstractCegarLoop]: Abstraction has 1058 states and 1427 transitions. [2023-02-14 02:16:21,287 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 02:16:21,287 INFO L276 IsEmpty]: Start isEmpty. Operand 1058 states and 1427 transitions. [2023-02-14 02:16:21,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-14 02:16:21,288 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:16:21,288 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 02:16:21,299 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-02-14 02:16:21,498 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 02:16:21,499 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 02:16:21,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:16:21,499 INFO L85 PathProgramCache]: Analyzing trace with hash 449678287, now seen corresponding path program 1 times [2023-02-14 02:16:21,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 02:16:21,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [651939666] [2023-02-14 02:16:21,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:16:21,500 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 02:16:21,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 02:16:21,501 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 02:16:21,501 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 02:16:21,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:16:21,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-14 02:16:21,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:16:21,944 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 02:16:21,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 02:16:22,132 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 02:16:22,132 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 02:16:22,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [651939666] [2023-02-14 02:16:22,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [651939666] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 02:16:22,132 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-14 02:16:22,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4] total 7 [2023-02-14 02:16:22,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052124259] [2023-02-14 02:16:22,132 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-14 02:16:22,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-14 02:16:22,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 02:16:22,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-14 02:16:22,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-02-14 02:16:22,133 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 02:16:24,150 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 02:16:26,155 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-14 02:16:28,159 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-14 02:16:30,165 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 02:16:34,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 02:16:34,539 INFO L93 Difference]: Finished difference Result 1331 states and 1673 transitions. [2023-02-14 02:16:34,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-14 02:16:34,540 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 02:16:34,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 02:16:34,544 INFO L225 Difference]: With dead ends: 1331 [2023-02-14 02:16:34,544 INFO L226 Difference]: Without dead ends: 1331 [2023-02-14 02:16:34,544 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 02:16:34,545 INFO L413 NwaCegarLoop]: 835 mSDtfsCounter, 1036 mSDsluCounter, 2360 mSDsCounter, 0 mSdLazyCounter, 1355 mSolverCounterSat, 82 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1048 SdHoareTripleChecker+Valid, 3195 SdHoareTripleChecker+Invalid, 1441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1355 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2023-02-14 02:16:34,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1048 Valid, 3195 Invalid, 1441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1355 Invalid, 4 Unknown, 0 Unchecked, 12.2s Time] [2023-02-14 02:16:34,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1331 states. [2023-02-14 02:16:34,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1331 to 1205. [2023-02-14 02:16:34,562 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 02:16:34,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1205 states to 1205 states and 1653 transitions. [2023-02-14 02:16:34,566 INFO L78 Accepts]: Start accepts. Automaton has 1205 states and 1653 transitions. Word has length 14 [2023-02-14 02:16:34,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 02:16:34,566 INFO L495 AbstractCegarLoop]: Abstraction has 1205 states and 1653 transitions. [2023-02-14 02:16:34,566 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 02:16:34,567 INFO L276 IsEmpty]: Start isEmpty. Operand 1205 states and 1653 transitions. [2023-02-14 02:16:34,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-14 02:16:34,567 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:16:34,567 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 02:16:34,586 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 02:16:34,781 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 02:16:34,781 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 02:16:34,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:16:34,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1064725833, now seen corresponding path program 1 times [2023-02-14 02:16:34,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 02:16:34,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2057596084] [2023-02-14 02:16:34,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:16:34,782 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-14 02:16:34,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 02:16:34,783 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 02:16:34,784 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 02:16:35,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:16:35,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-14 02:16:35,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:16:35,126 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 02:16:35,126 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 02:16:35,184 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 02:16:35,185 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 02:16:35,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2057596084] [2023-02-14 02:16:35,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2057596084] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 02:16:35,186 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-14 02:16:35,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-02-14 02:16:35,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906032737] [2023-02-14 02:16:35,186 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-14 02:16:35,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-14 02:16:35,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 02:16:35,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-14 02:16:35,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-02-14 02:16:35,187 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 02:16:35,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 02:16:35,466 INFO L93 Difference]: Finished difference Result 1211 states and 1657 transitions. [2023-02-14 02:16:35,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-14 02:16:35,467 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 02:16:35,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 02:16:35,470 INFO L225 Difference]: With dead ends: 1211 [2023-02-14 02:16:35,470 INFO L226 Difference]: Without dead ends: 1211 [2023-02-14 02:16:35,471 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 02:16:35,471 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 02:16:35,471 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 02:16:35,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1211 states. [2023-02-14 02:16:35,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1211 to 1210. [2023-02-14 02:16:35,507 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 02:16:35,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 1657 transitions. [2023-02-14 02:16:35,510 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 1657 transitions. Word has length 19 [2023-02-14 02:16:35,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 02:16:35,511 INFO L495 AbstractCegarLoop]: Abstraction has 1210 states and 1657 transitions. [2023-02-14 02:16:35,511 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 02:16:35,511 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 1657 transitions. [2023-02-14 02:16:35,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-02-14 02:16:35,512 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:16:35,512 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 02:16:35,525 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 02:16:35,717 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 02:16:35,717 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 02:16:35,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:16:35,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1407192417, now seen corresponding path program 2 times [2023-02-14 02:16:35,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 02:16:35,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1967494334] [2023-02-14 02:16:35,718 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-14 02:16:35,718 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 02:16:35,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 02:16:35,719 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 02:16:35,720 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 02:16:36,128 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-14 02:16:36,128 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 02:16:36,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 580 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-14 02:16:36,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:16:36,375 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 02:16:36,375 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 02:16:36,951 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 02:16:36,951 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 02:16:36,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1967494334] [2023-02-14 02:16:36,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1967494334] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 02:16:36,951 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-14 02:16:36,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 14 [2023-02-14 02:16:36,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500734648] [2023-02-14 02:16:36,951 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-14 02:16:36,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-02-14 02:16:36,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 02:16:36,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-02-14 02:16:36,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2023-02-14 02:16:36,952 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 02:16:38,969 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 02:16:40,975 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-14 02:16:42,979 WARN L539 Checker$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 02:16:44,986 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-14 02:16:46,991 WARN L539 Checker$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 02:16:48,996 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 02:16:59,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 02:16:59,130 INFO L93 Difference]: Finished difference Result 1337 states and 1691 transitions. [2023-02-14 02:16:59,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-02-14 02:16:59,130 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 02:16:59,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 02:16:59,134 INFO L225 Difference]: With dead ends: 1337 [2023-02-14 02:16:59,134 INFO L226 Difference]: Without dead ends: 1337 [2023-02-14 02:16:59,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=243, Invalid=407, Unknown=0, NotChecked=0, Total=650 [2023-02-14 02:16:59,135 INFO L413 NwaCegarLoop]: 823 mSDtfsCounter, 701 mSDsluCounter, 5514 mSDsCounter, 0 mSdLazyCounter, 3127 mSolverCounterSat, 81 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 713 SdHoareTripleChecker+Valid, 6337 SdHoareTripleChecker+Invalid, 3214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 3127 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.8s IncrementalHoareTripleChecker+Time [2023-02-14 02:16:59,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [713 Valid, 6337 Invalid, 3214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 3127 Invalid, 6 Unknown, 0 Unchecked, 20.8s Time] [2023-02-14 02:16:59,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1337 states. [2023-02-14 02:16:59,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1337 to 1223. [2023-02-14 02:16:59,150 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 02:16:59,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1223 states to 1223 states and 1673 transitions. [2023-02-14 02:16:59,153 INFO L78 Accepts]: Start accepts. Automaton has 1223 states and 1673 transitions. Word has length 23 [2023-02-14 02:16:59,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 02:16:59,153 INFO L495 AbstractCegarLoop]: Abstraction has 1223 states and 1673 transitions. [2023-02-14 02:16:59,153 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 02:16:59,153 INFO L276 IsEmpty]: Start isEmpty. Operand 1223 states and 1673 transitions. [2023-02-14 02:16:59,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-02-14 02:16:59,154 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:16:59,154 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 02:16:59,183 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-02-14 02:16:59,366 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 02:16:59,366 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 02:16:59,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:16:59,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1830179145, now seen corresponding path program 2 times [2023-02-14 02:16:59,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 02:16:59,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1416000023] [2023-02-14 02:16:59,367 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-14 02:16:59,367 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 02:16:59,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 02:16:59,368 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 02:16:59,369 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 02:16:59,678 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-02-14 02:16:59,678 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 02:16:59,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-14 02:16:59,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:16:59,786 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 02:16:59,786 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 02:16:59,786 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 02:16:59,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1416000023] [2023-02-14 02:16:59,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1416000023] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 02:16:59,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 02:16:59,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-02-14 02:16:59,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892731974] [2023-02-14 02:16:59,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 02:16:59,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 02:16:59,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 02:16:59,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 02:16:59,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 02:16:59,788 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 02:17:00,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 02:17:00,755 INFO L93 Difference]: Finished difference Result 1431 states and 1766 transitions. [2023-02-14 02:17:00,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 02:17:00,755 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 02:17:00,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 02:17:00,759 INFO L225 Difference]: With dead ends: 1431 [2023-02-14 02:17:00,759 INFO L226 Difference]: Without dead ends: 1431 [2023-02-14 02:17:00,759 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 02:17:00,760 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 02:17:00,760 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 02:17:00,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1431 states. [2023-02-14 02:17:00,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1431 to 1221. [2023-02-14 02:17:00,815 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 02:17:00,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1221 states to 1221 states and 1664 transitions. [2023-02-14 02:17:00,818 INFO L78 Accepts]: Start accepts. Automaton has 1221 states and 1664 transitions. Word has length 31 [2023-02-14 02:17:00,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 02:17:00,818 INFO L495 AbstractCegarLoop]: Abstraction has 1221 states and 1664 transitions. [2023-02-14 02:17:00,819 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 02:17:00,819 INFO L276 IsEmpty]: Start isEmpty. Operand 1221 states and 1664 transitions. [2023-02-14 02:17:00,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-02-14 02:17:00,819 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:17:00,819 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 02:17:00,841 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 02:17:01,029 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 02:17:01,030 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 02:17:01,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:17:01,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1830179146, now seen corresponding path program 1 times [2023-02-14 02:17:01,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 02:17:01,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [649810820] [2023-02-14 02:17:01,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:17:01,031 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 02:17:01,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 02:17:01,032 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 02:17:01,032 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 02:17:01,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:17:01,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-14 02:17:01,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:17:01,444 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 02:17:01,444 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 02:17:01,586 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 02:17:01,586 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 02:17:01,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [649810820] [2023-02-14 02:17:01,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [649810820] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 02:17:01,586 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-14 02:17:01,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-02-14 02:17:01,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953996281] [2023-02-14 02:17:01,586 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-14 02:17:01,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-02-14 02:17:01,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 02:17:01,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-02-14 02:17:01,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2023-02-14 02:17:01,587 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 02:17:02,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 02:17:02,087 INFO L93 Difference]: Finished difference Result 1221 states and 1660 transitions. [2023-02-14 02:17:02,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-14 02:17:02,088 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 02:17:02,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 02:17:02,091 INFO L225 Difference]: With dead ends: 1221 [2023-02-14 02:17:02,091 INFO L226 Difference]: Without dead ends: 1221 [2023-02-14 02:17:02,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2023-02-14 02:17:02,092 INFO L413 NwaCegarLoop]: 780 mSDtfsCounter, 3379 mSDsluCounter, 4789 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 235 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3411 SdHoareTripleChecker+Valid, 5569 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 235 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-14 02:17:02,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3411 Valid, 5569 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [235 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-14 02:17:02,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1221 states. [2023-02-14 02:17:02,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1221 to 1221. [2023-02-14 02:17:02,107 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 02:17:02,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1221 states to 1221 states and 1660 transitions. [2023-02-14 02:17:02,110 INFO L78 Accepts]: Start accepts. Automaton has 1221 states and 1660 transitions. Word has length 31 [2023-02-14 02:17:02,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 02:17:02,110 INFO L495 AbstractCegarLoop]: Abstraction has 1221 states and 1660 transitions. [2023-02-14 02:17:02,110 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 02:17:02,110 INFO L276 IsEmpty]: Start isEmpty. Operand 1221 states and 1660 transitions. [2023-02-14 02:17:02,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-02-14 02:17:02,111 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:17:02,111 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 02:17:02,129 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 (10)] Ended with exit code 0 [2023-02-14 02:17:02,321 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 02:17:02,322 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 02:17:02,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:17:02,322 INFO L85 PathProgramCache]: Analyzing trace with hash -738162529, now seen corresponding path program 3 times [2023-02-14 02:17:02,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 02:17:02,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [573860365] [2023-02-14 02:17:02,322 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-14 02:17:02,323 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 02:17:02,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 02:17:02,323 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 02:17:02,326 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 02:17:03,252 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-02-14 02:17:03,253 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 02:17:03,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 670 conjuncts, 16 conjunts are in the unsatisfiable core [2023-02-14 02:17:03,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:17:03,667 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 02:17:03,668 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 02:17:05,210 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 02:17:05,210 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 02:17:05,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [573860365] [2023-02-14 02:17:05,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [573860365] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 02:17:05,211 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-14 02:17:05,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 26 [2023-02-14 02:17:05,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436820472] [2023-02-14 02:17:05,211 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-14 02:17:05,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-02-14 02:17:05,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 02:17:05,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-02-14 02:17:05,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=458, Unknown=0, NotChecked=0, Total=650 [2023-02-14 02:17:05,212 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 02:17:07,230 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 02:17:09,234 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-14 02:17:11,238 WARN L539 Checker$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 02:17:13,242 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-14 02:17:15,247 WARN L539 Checker$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 02:17:17,250 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-14 02:17:19,253 WARN L539 Checker$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 02:17:21,260 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-14 02:17:23,266 WARN L539 Checker$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 02:17:25,270 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-14 02:17:27,274 WARN L539 Checker$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 02:17:29,279 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-14 02:17:31,286 WARN L539 Checker$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 02:17:33,291 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-14 02:17:35,294 WARN L539 Checker$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 02:17:37,298 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-14 02:17:39,303 WARN L539 Checker$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 02:17:41,312 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 02:17:58,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 02:17:58,492 INFO L93 Difference]: Finished difference Result 1570 states and 1888 transitions. [2023-02-14 02:17:58,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-02-14 02:17:58,492 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 02:17:58,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 02:17:58,505 INFO L225 Difference]: With dead ends: 1570 [2023-02-14 02:17:58,505 INFO L226 Difference]: Without dead ends: 1570 [2023-02-14 02:17:58,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=226, Invalid=530, Unknown=0, NotChecked=0, Total=756 [2023-02-14 02:17:58,506 INFO L413 NwaCegarLoop]: 741 mSDtfsCounter, 2399 mSDsluCounter, 8064 mSDsCounter, 0 mSdLazyCounter, 5461 mSolverCounterSat, 238 mSolverCounterUnsat, 18 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 50.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2411 SdHoareTripleChecker+Valid, 8805 SdHoareTripleChecker+Invalid, 5717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 238 IncrementalHoareTripleChecker+Valid, 5461 IncrementalHoareTripleChecker+Invalid, 18 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 52.7s IncrementalHoareTripleChecker+Time [2023-02-14 02:17:58,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2411 Valid, 8805 Invalid, 5717 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [238 Valid, 5461 Invalid, 18 Unknown, 0 Unchecked, 52.7s Time] [2023-02-14 02:17:58,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1570 states. [2023-02-14 02:17:58,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1570 to 1219. [2023-02-14 02:17:58,526 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 02:17:58,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1219 states to 1219 states and 1657 transitions. [2023-02-14 02:17:58,534 INFO L78 Accepts]: Start accepts. Automaton has 1219 states and 1657 transitions. Word has length 41 [2023-02-14 02:17:58,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 02:17:58,534 INFO L495 AbstractCegarLoop]: Abstraction has 1219 states and 1657 transitions. [2023-02-14 02:17:58,535 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 02:17:58,535 INFO L276 IsEmpty]: Start isEmpty. Operand 1219 states and 1657 transitions. [2023-02-14 02:17:58,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-02-14 02:17:58,540 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:17:58,540 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 02:17:58,572 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 02:17:58,753 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 02:17:58,753 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 02:17:58,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:17:58,754 INFO L85 PathProgramCache]: Analyzing trace with hash -704629430, now seen corresponding path program 2 times [2023-02-14 02:17:58,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 02:17:58,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [600016101] [2023-02-14 02:17:58,754 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-14 02:17:58,754 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 02:17:58,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 02:17:58,756 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 02:17:58,757 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 02:17:59,132 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-02-14 02:17:59,132 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 02:17:59,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-14 02:17:59,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:17:59,405 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 02:17:59,406 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 02:17:59,406 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 02:17:59,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [600016101] [2023-02-14 02:17:59,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [600016101] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 02:17:59,406 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 02:17:59,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-14 02:17:59,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388475195] [2023-02-14 02:17:59,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 02:17:59,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-14 02:17:59,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 02:17:59,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-14 02:17:59,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-14 02:17:59,407 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 02:18:01,427 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 02:18:02,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 02:18:02,760 INFO L93 Difference]: Finished difference Result 1275 states and 1669 transitions. [2023-02-14 02:18:02,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-14 02:18:02,760 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 02:18:02,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 02:18:02,764 INFO L225 Difference]: With dead ends: 1275 [2023-02-14 02:18:02,764 INFO L226 Difference]: Without dead ends: 1275 [2023-02-14 02:18:02,764 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 02:18:02,764 INFO L413 NwaCegarLoop]: 830 mSDtfsCounter, 234 mSDsluCounter, 1144 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s 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, 3.3s IncrementalHoareTripleChecker+Time [2023-02-14 02:18:02,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 1974 Invalid, 574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 571 Invalid, 1 Unknown, 0 Unchecked, 3.3s Time] [2023-02-14 02:18:02,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1275 states. [2023-02-14 02:18:02,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1275 to 1217. [2023-02-14 02:18:02,778 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 02:18:02,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 1655 transitions. [2023-02-14 02:18:02,790 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 1655 transitions. Word has length 43 [2023-02-14 02:18:02,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 02:18:02,791 INFO L495 AbstractCegarLoop]: Abstraction has 1217 states and 1655 transitions. [2023-02-14 02:18:02,791 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 02:18:02,791 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 1655 transitions. [2023-02-14 02:18:02,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-02-14 02:18:02,792 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:18:02,792 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 02:18:02,806 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 02:18:03,003 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 02:18:03,004 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 02:18:03,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:18:03,004 INFO L85 PathProgramCache]: Analyzing trace with hash 2020825701, now seen corresponding path program 1 times [2023-02-14 02:18:03,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 02:18:03,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1450894919] [2023-02-14 02:18:03,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:18:03,005 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 02:18:03,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 02:18:03,006 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 02:18:03,007 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 02:18:03,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:18:03,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 755 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-14 02:18:03,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:18:03,513 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 02:18:03,513 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 02:18:03,514 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 02:18:03,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1450894919] [2023-02-14 02:18:03,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1450894919] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 02:18:03,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 02:18:03,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-14 02:18:03,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157713242] [2023-02-14 02:18:03,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 02:18:03,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 02:18:03,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 02:18:03,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 02:18:03,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 02:18:03,515 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 02:18:03,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 02:18:03,527 INFO L93 Difference]: Finished difference Result 1217 states and 1654 transitions. [2023-02-14 02:18:03,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 02:18:03,528 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 02:18:03,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 02:18:03,531 INFO L225 Difference]: With dead ends: 1217 [2023-02-14 02:18:03,531 INFO L226 Difference]: Without dead ends: 1217 [2023-02-14 02:18:03,532 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 02:18:03,533 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 02:18:03,533 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 02:18:03,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1217 states. [2023-02-14 02:18:03,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1217 to 1217. [2023-02-14 02:18:03,548 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 02:18:03,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 1654 transitions. [2023-02-14 02:18:03,551 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 1654 transitions. Word has length 67 [2023-02-14 02:18:03,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 02:18:03,552 INFO L495 AbstractCegarLoop]: Abstraction has 1217 states and 1654 transitions. [2023-02-14 02:18:03,552 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 02:18:03,552 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 1654 transitions. [2023-02-14 02:18:03,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-02-14 02:18:03,553 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:18:03,553 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 02:18:03,565 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-02-14 02:18:03,765 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 02:18:03,766 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 02:18:03,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:18:03,766 INFO L85 PathProgramCache]: Analyzing trace with hash 2020823779, now seen corresponding path program 1 times [2023-02-14 02:18:03,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 02:18:03,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1238016618] [2023-02-14 02:18:03,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:18:03,767 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 02:18:03,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 02:18:03,768 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 02:18:03,768 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 02:18:04,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:18:04,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 756 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-14 02:18:04,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:18:04,283 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 02:18:04,290 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 02:18:04,290 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 02:18:04,290 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 02:18:04,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1238016618] [2023-02-14 02:18:04,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1238016618] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 02:18:04,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 02:18:04,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-14 02:18:04,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385973608] [2023-02-14 02:18:04,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 02:18:04,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 02:18:04,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 02:18:04,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 02:18:04,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 02:18:04,292 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 02:18:06,319 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 02:18:06,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 02:18:06,792 INFO L93 Difference]: Finished difference Result 1216 states and 1653 transitions. [2023-02-14 02:18:06,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 02:18:06,792 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 02:18:06,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 02:18:06,796 INFO L225 Difference]: With dead ends: 1216 [2023-02-14 02:18:06,796 INFO L226 Difference]: Without dead ends: 1216 [2023-02-14 02:18:06,796 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 02:18:06,797 INFO L413 NwaCegarLoop]: 783 mSDtfsCounter, 2 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1355 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-02-14 02:18:06,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1355 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 212 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2023-02-14 02:18:06,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1216 states. [2023-02-14 02:18:06,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1216 to 1216. [2023-02-14 02:18:06,810 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 02:18:06,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1216 states to 1216 states and 1653 transitions. [2023-02-14 02:18:06,812 INFO L78 Accepts]: Start accepts. Automaton has 1216 states and 1653 transitions. Word has length 67 [2023-02-14 02:18:06,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 02:18:06,813 INFO L495 AbstractCegarLoop]: Abstraction has 1216 states and 1653 transitions. [2023-02-14 02:18:06,813 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 02:18:06,813 INFO L276 IsEmpty]: Start isEmpty. Operand 1216 states and 1653 transitions. [2023-02-14 02:18:06,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-02-14 02:18:06,813 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:18:06,813 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 02:18:06,830 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-02-14 02:18:07,024 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 02:18:07,025 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 02:18:07,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:18:07,025 INFO L85 PathProgramCache]: Analyzing trace with hash 2020823780, now seen corresponding path program 1 times [2023-02-14 02:18:07,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 02:18:07,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1033750320] [2023-02-14 02:18:07,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:18:07,026 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 02:18:07,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 02:18:07,027 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 02:18:07,030 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 02:18:07,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:18:07,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 756 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-14 02:18:07,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:18:07,662 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 02:18:07,673 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 02:18:07,673 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 02:18:07,673 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 02:18:07,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1033750320] [2023-02-14 02:18:07,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1033750320] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 02:18:07,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 02:18:07,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-14 02:18:07,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30561518] [2023-02-14 02:18:07,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 02:18:07,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-14 02:18:07,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 02:18:07,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-14 02:18:07,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-14 02:18:07,674 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 02:18:09,693 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 02:18:10,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 02:18:10,472 INFO L93 Difference]: Finished difference Result 1215 states and 1652 transitions. [2023-02-14 02:18:10,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-14 02:18:10,473 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 02:18:10,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 02:18:10,476 INFO L225 Difference]: With dead ends: 1215 [2023-02-14 02:18:10,476 INFO L226 Difference]: Without dead ends: 1215 [2023-02-14 02:18:10,476 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 02:18:10,477 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 02:18:10,477 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 02:18:10,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1215 states. [2023-02-14 02:18:10,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1215 to 1215. [2023-02-14 02:18:10,495 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 02:18:10,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1215 states to 1215 states and 1652 transitions. [2023-02-14 02:18:10,497 INFO L78 Accepts]: Start accepts. Automaton has 1215 states and 1652 transitions. Word has length 67 [2023-02-14 02:18:10,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 02:18:10,498 INFO L495 AbstractCegarLoop]: Abstraction has 1215 states and 1652 transitions. [2023-02-14 02:18:10,498 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 02:18:10,498 INFO L276 IsEmpty]: Start isEmpty. Operand 1215 states and 1652 transitions. [2023-02-14 02:18:10,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-02-14 02:18:10,498 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:18:10,498 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 02:18:10,514 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 02:18:10,711 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 02:18:10,712 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 02:18:10,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:18:10,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1355687384, now seen corresponding path program 1 times [2023-02-14 02:18:10,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 02:18:10,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [363661741] [2023-02-14 02:18:10,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:18:10,713 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 02:18:10,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 02:18:10,714 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 02:18:10,715 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 02:18:11,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:18:11,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 749 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-14 02:18:11,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:18:11,267 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 02:18:11,267 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 02:18:11,267 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 02:18:11,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [363661741] [2023-02-14 02:18:11,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [363661741] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 02:18:11,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 02:18:11,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-14 02:18:11,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187698202] [2023-02-14 02:18:11,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 02:18:11,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 02:18:11,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 02:18:11,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 02:18:11,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 02:18:11,268 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 02:18:13,287 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 02:18:13,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 02:18:13,923 INFO L93 Difference]: Finished difference Result 1256 states and 1661 transitions. [2023-02-14 02:18:13,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 02:18:13,924 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 02:18:13,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 02:18:13,928 INFO L225 Difference]: With dead ends: 1256 [2023-02-14 02:18:13,928 INFO L226 Difference]: Without dead ends: 1244 [2023-02-14 02:18:13,928 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 02:18:13,929 INFO L413 NwaCegarLoop]: 772 mSDtfsCounter, 93 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 1317 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-02-14 02:18:13,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 1317 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 258 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2023-02-14 02:18:13,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1244 states. [2023-02-14 02:18:13,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1244 to 1211. [2023-02-14 02:18:13,945 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 02:18:13,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1211 states to 1211 states and 1645 transitions. [2023-02-14 02:18:13,947 INFO L78 Accepts]: Start accepts. Automaton has 1211 states and 1645 transitions. Word has length 74 [2023-02-14 02:18:13,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 02:18:13,948 INFO L495 AbstractCegarLoop]: Abstraction has 1211 states and 1645 transitions. [2023-02-14 02:18:13,948 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 02:18:13,948 INFO L276 IsEmpty]: Start isEmpty. Operand 1211 states and 1645 transitions. [2023-02-14 02:18:13,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-02-14 02:18:13,948 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:18:13,949 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 02:18:13,968 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 02:18:14,163 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 02:18:14,163 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 02:18:14,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:18:14,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1244150361, now seen corresponding path program 1 times [2023-02-14 02:18:14,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 02:18:14,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [916400529] [2023-02-14 02:18:14,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:18:14,165 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 02:18:14,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 02:18:14,166 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 02:18:14,166 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 02:18:15,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:18:15,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 784 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-14 02:18:15,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:18:15,610 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-02-14 02:18:15,611 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 02:18:15,715 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 02:18:15,739 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 02:18:15,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 02:18:15,895 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 02:18:15,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [916400529] [2023-02-14 02:18:15,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [916400529] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 02:18:15,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1064960835] [2023-02-14 02:18:15,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:18:15,895 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-02-14 02:18:15,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-02-14 02:18:15,897 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 02:18:15,897 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 02:18:17,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:18:17,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 784 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-14 02:18:17,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:18:17,911 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-02-14 02:18:17,911 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 02:18:18,000 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 02:18:18,049 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 02:18:18,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 02:18:18,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1064960835] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 02:18:18,096 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-14 02:18:18,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2023-02-14 02:18:18,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988288084] [2023-02-14 02:18:18,096 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-14 02:18:18,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-14 02:18:18,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 02:18:18,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-14 02:18:18,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-02-14 02:18:18,097 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 02:18:20,120 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 02:18:22,125 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-14 02:18:24,130 WARN L539 Checker$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 02:18:26,134 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 02:18:29,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 02:18:29,097 INFO L93 Difference]: Finished difference Result 1742 states and 2280 transitions. [2023-02-14 02:18:29,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-14 02:18:29,097 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 02:18:29,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 02:18:29,102 INFO L225 Difference]: With dead ends: 1742 [2023-02-14 02:18:29,102 INFO L226 Difference]: Without dead ends: 1742 [2023-02-14 02:18:29,103 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 02:18:29,103 INFO L413 NwaCegarLoop]: 704 mSDtfsCounter, 750 mSDsluCounter, 3579 mSDsCounter, 0 mSdLazyCounter, 2480 mSolverCounterSat, 4 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 751 SdHoareTripleChecker+Valid, 4283 SdHoareTripleChecker+Invalid, 2488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2480 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2023-02-14 02:18:29,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [751 Valid, 4283 Invalid, 2488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2480 Invalid, 4 Unknown, 0 Unchecked, 10.9s Time] [2023-02-14 02:18:29,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1742 states. [2023-02-14 02:18:29,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1742 to 1519. [2023-02-14 02:18:29,119 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 02:18:29,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1519 states to 1519 states and 2178 transitions. [2023-02-14 02:18:29,122 INFO L78 Accepts]: Start accepts. Automaton has 1519 states and 2178 transitions. Word has length 76 [2023-02-14 02:18:29,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 02:18:29,122 INFO L495 AbstractCegarLoop]: Abstraction has 1519 states and 2178 transitions. [2023-02-14 02:18:29,122 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 02:18:29,123 INFO L276 IsEmpty]: Start isEmpty. Operand 1519 states and 2178 transitions. [2023-02-14 02:18:29,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-02-14 02:18:29,123 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:18:29,123 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 02:18:29,144 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 02:18:29,355 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (18)] Ended with exit code 0 [2023-02-14 02:18:29,544 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 02:18:29,544 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 02:18:29,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:18:29,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1244150360, now seen corresponding path program 1 times [2023-02-14 02:18:29,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 02:18:29,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [550036961] [2023-02-14 02:18:29,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:18:29,546 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 02:18:29,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 02:18:29,547 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 02:18:29,548 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 02:18:30,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:18:30,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 784 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-14 02:18:30,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:18:31,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 02:18:31,050 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 02:18:31,129 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 02:18:31,130 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 02:18:33,505 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 02:18:33,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [550036961] [2023-02-14 02:18:33,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [550036961] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 02:18:33,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1106431746] [2023-02-14 02:18:33,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:18:33,506 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-02-14 02:18:33,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-02-14 02:18:33,507 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 02:18:33,513 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 02:18:35,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:18:35,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 784 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-14 02:18:35,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:18:35,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 02:18:35,555 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 02:18:35,599 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 02:18:35,599 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 02:18:35,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1106431746] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 02:18:35,797 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-14 02:18:35,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2023-02-14 02:18:35,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768480665] [2023-02-14 02:18:35,798 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-14 02:18:35,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-14 02:18:35,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 02:18:35,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-14 02:18:35,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=66, Unknown=1, NotChecked=0, Total=90 [2023-02-14 02:18:35,798 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 02:18:37,818 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 02:18:39,823 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 02:18:42,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 02:18:42,948 INFO L93 Difference]: Finished difference Result 1942 states and 2503 transitions. [2023-02-14 02:18:42,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-14 02:18:42,948 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 02:18:42,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 02:18:42,954 INFO L225 Difference]: With dead ends: 1942 [2023-02-14 02:18:42,954 INFO L226 Difference]: Without dead ends: 1942 [2023-02-14 02:18:42,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 171 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 02:18:42,955 INFO L413 NwaCegarLoop]: 620 mSDtfsCounter, 967 mSDsluCounter, 1676 mSDsCounter, 0 mSdLazyCounter, 1905 mSolverCounterSat, 7 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s 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, 7.1s IncrementalHoareTripleChecker+Time [2023-02-14 02:18:42,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [967 Valid, 2296 Invalid, 1914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1905 Invalid, 2 Unknown, 0 Unchecked, 7.1s Time] [2023-02-14 02:18:42,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1942 states. [2023-02-14 02:18:42,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1942 to 1696. [2023-02-14 02:18:42,986 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 02:18:42,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1696 states to 1696 states and 2475 transitions. [2023-02-14 02:18:42,990 INFO L78 Accepts]: Start accepts. Automaton has 1696 states and 2475 transitions. Word has length 76 [2023-02-14 02:18:42,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 02:18:42,990 INFO L495 AbstractCegarLoop]: Abstraction has 1696 states and 2475 transitions. [2023-02-14 02:18:42,991 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 02:18:42,991 INFO L276 IsEmpty]: Start isEmpty. Operand 1696 states and 2475 transitions. [2023-02-14 02:18:42,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-02-14 02:18:42,992 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:18:42,992 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 02:18:43,011 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 02:18:43,218 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 02:18:43,404 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 02:18:43,405 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 02:18:43,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:18:43,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1356949500, now seen corresponding path program 1 times [2023-02-14 02:18:43,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 02:18:43,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1417143897] [2023-02-14 02:18:43,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:18:43,406 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 02:18:43,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 02:18:43,407 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 02:18:43,409 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 02:18:43,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:18:43,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 760 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-14 02:18:43,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:18:43,922 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 02:18:43,922 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 02:18:43,922 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 02:18:43,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1417143897] [2023-02-14 02:18:43,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1417143897] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 02:18:43,923 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 02:18:43,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-14 02:18:43,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884604282] [2023-02-14 02:18:43,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 02:18:43,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-14 02:18:43,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 02:18:43,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-14 02:18:43,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-14 02:18:43,924 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 02:18:43,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 02:18:43,956 INFO L93 Difference]: Finished difference Result 1336 states and 1884 transitions. [2023-02-14 02:18:43,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-14 02:18:43,956 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 02:18:43,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 02:18:43,960 INFO L225 Difference]: With dead ends: 1336 [2023-02-14 02:18:43,960 INFO L226 Difference]: Without dead ends: 1331 [2023-02-14 02:18:43,960 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 02:18:43,960 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 02:18:43,961 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 02:18:43,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1331 states. [2023-02-14 02:18:43,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1331 to 1331. [2023-02-14 02:18:43,974 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 02:18:43,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1331 states to 1331 states and 1878 transitions. [2023-02-14 02:18:43,976 INFO L78 Accepts]: Start accepts. Automaton has 1331 states and 1878 transitions. Word has length 81 [2023-02-14 02:18:43,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 02:18:43,976 INFO L495 AbstractCegarLoop]: Abstraction has 1331 states and 1878 transitions. [2023-02-14 02:18:43,976 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 02:18:43,976 INFO L276 IsEmpty]: Start isEmpty. Operand 1331 states and 1878 transitions. [2023-02-14 02:18:43,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-02-14 02:18:43,977 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:18:43,977 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 02:18:43,993 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 02:18:44,189 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 02:18:44,189 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 02:18:44,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:18:44,190 INFO L85 PathProgramCache]: Analyzing trace with hash 986823980, now seen corresponding path program 1 times [2023-02-14 02:18:44,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 02:18:44,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1879520004] [2023-02-14 02:18:44,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:18:44,191 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 02:18:44,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 02:18:44,191 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 02:18:44,192 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 02:18:45,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:18:45,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 840 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-14 02:18:45,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:18:45,602 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-02-14 02:18:45,602 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 02:18:45,636 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 20 [2023-02-14 02:18:45,679 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 02:18:45,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 02:18:45,741 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 02:18:45,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1879520004] [2023-02-14 02:18:45,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1879520004] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 02:18:45,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1223921023] [2023-02-14 02:18:45,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:18:45,742 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-02-14 02:18:45,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-02-14 02:18:45,743 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 02:18:45,744 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 02:18:47,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:18:47,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 840 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-14 02:18:47,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:18:47,678 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-02-14 02:18:47,678 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 02:18:47,771 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 02:18:47,873 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 02:18:47,874 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 02:18:47,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1223921023] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 02:18:47,922 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-14 02:18:47,922 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2023-02-14 02:18:47,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059978978] [2023-02-14 02:18:47,922 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-14 02:18:47,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-14 02:18:47,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 02:18:47,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-14 02:18:47,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-02-14 02:18:47,923 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 02:18:49,943 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 02:18:51,948 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-14 02:18:53,955 WARN L539 Checker$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 02:18:55,959 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-14 02:18:57,963 WARN L539 Checker$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 02:18:59,968 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 02:19:03,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 02:19:03,214 INFO L93 Difference]: Finished difference Result 1506 states and 1890 transitions. [2023-02-14 02:19:03,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-14 02:19:03,215 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 02:19:03,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 02:19:03,219 INFO L225 Difference]: With dead ends: 1506 [2023-02-14 02:19:03,219 INFO L226 Difference]: Without dead ends: 1506 [2023-02-14 02:19:03,219 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 02:19:03,220 INFO L413 NwaCegarLoop]: 700 mSDtfsCounter, 735 mSDsluCounter, 3860 mSDsCounter, 0 mSdLazyCounter, 2795 mSolverCounterSat, 4 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.7s 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 02:19:03,220 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 02:19:03,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1506 states. [2023-02-14 02:19:03,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1506 to 1329. [2023-02-14 02:19:03,240 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 02:19:03,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1329 states to 1329 states and 1876 transitions. [2023-02-14 02:19:03,242 INFO L78 Accepts]: Start accepts. Automaton has 1329 states and 1876 transitions. Word has length 82 [2023-02-14 02:19:03,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 02:19:03,243 INFO L495 AbstractCegarLoop]: Abstraction has 1329 states and 1876 transitions. [2023-02-14 02:19:03,243 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 02:19:03,243 INFO L276 IsEmpty]: Start isEmpty. Operand 1329 states and 1876 transitions. [2023-02-14 02:19:03,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-02-14 02:19:03,243 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:19:03,244 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 02:19:03,261 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2023-02-14 02:19:03,488 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-02-14 02:19:03,648 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 02:19:03,648 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 02:19:03,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:19:03,649 INFO L85 PathProgramCache]: Analyzing trace with hash 986823981, now seen corresponding path program 1 times [2023-02-14 02:19:03,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 02:19:03,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1436282484] [2023-02-14 02:19:03,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:19:03,650 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 02:19:03,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 02:19:03,650 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 02:19:03,651 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 02:19:04,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:19:04,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 840 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-14 02:19:04,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:19:05,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 02:19:05,323 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 02:19:05,435 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 02:19:05,435 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 02:19:05,840 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 02:19:05,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1436282484] [2023-02-14 02:19:05,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1436282484] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 02:19:05,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [828273346] [2023-02-14 02:19:05,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:19:05,840 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-02-14 02:19:05,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-02-14 02:19:05,841 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 02:19:05,842 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 02:19:07,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:19:07,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 840 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-14 02:19:07,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:19:08,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 02:19:08,172 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 02:19:08,242 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 02:19:08,242 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 02:19:08,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [828273346] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 02:19:08,478 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-14 02:19:08,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2023-02-14 02:19:08,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388277298] [2023-02-14 02:19:08,479 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-14 02:19:08,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-14 02:19:08,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 02:19:08,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-14 02:19:08,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-02-14 02:19:08,480 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 02:19:10,499 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 02:19:12,503 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 02:19:15,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 02:19:15,420 INFO L93 Difference]: Finished difference Result 1573 states and 1902 transitions. [2023-02-14 02:19:15,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-14 02:19:15,420 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 02:19:15,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 02:19:15,425 INFO L225 Difference]: With dead ends: 1573 [2023-02-14 02:19:15,425 INFO L226 Difference]: Without dead ends: 1573 [2023-02-14 02:19:15,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 195 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2023-02-14 02:19:15,425 INFO L413 NwaCegarLoop]: 616 mSDtfsCounter, 1480 mSDsluCounter, 1385 mSDsCounter, 0 mSdLazyCounter, 1681 mSolverCounterSat, 135 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s 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, 6.8s IncrementalHoareTripleChecker+Time [2023-02-14 02:19:15,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1481 Valid, 2001 Invalid, 1818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 1681 Invalid, 2 Unknown, 0 Unchecked, 6.8s Time] [2023-02-14 02:19:15,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1573 states. [2023-02-14 02:19:15,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1573 to 1327. [2023-02-14 02:19:15,438 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 02:19:15,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1327 states to 1327 states and 1874 transitions. [2023-02-14 02:19:15,449 INFO L78 Accepts]: Start accepts. Automaton has 1327 states and 1874 transitions. Word has length 82 [2023-02-14 02:19:15,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 02:19:15,450 INFO L495 AbstractCegarLoop]: Abstraction has 1327 states and 1874 transitions. [2023-02-14 02:19:15,450 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 02:19:15,450 INFO L276 IsEmpty]: Start isEmpty. Operand 1327 states and 1874 transitions. [2023-02-14 02:19:15,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-02-14 02:19:15,450 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:19:15,450 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 02:19:15,474 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 02:19:15,728 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (25)] Forceful destruction successful, exit code 0 [2023-02-14 02:19:15,907 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 02:19:15,907 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 02:19:15,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:19:15,908 INFO L85 PathProgramCache]: Analyzing trace with hash -3613151, now seen corresponding path program 1 times [2023-02-14 02:19:15,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 02:19:15,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1992823913] [2023-02-14 02:19:15,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:19:15,909 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 02:19:15,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 02:19:15,910 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 02:19:15,910 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 02:19:17,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:19:17,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 893 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-14 02:19:17,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:19:17,454 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-02-14 02:19:17,454 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 02:19:17,499 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 02:19:17,544 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 02:19:17,545 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 02:19:17,545 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 02:19:17,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1992823913] [2023-02-14 02:19:17,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1992823913] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 02:19:17,545 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 02:19:17,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-14 02:19:17,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393486900] [2023-02-14 02:19:17,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 02:19:17,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-14 02:19:17,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 02:19:17,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-14 02:19:17,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-14 02:19:17,547 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 02:19:19,568 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 02:19:20,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 02:19:20,872 INFO L93 Difference]: Finished difference Result 1502 states and 1886 transitions. [2023-02-14 02:19:20,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-14 02:19:20,873 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 02:19:20,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 02:19:20,876 INFO L225 Difference]: With dead ends: 1502 [2023-02-14 02:19:20,877 INFO L226 Difference]: Without dead ends: 1502 [2023-02-14 02:19:20,877 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 02:19:20,877 INFO L413 NwaCegarLoop]: 698 mSDtfsCounter, 717 mSDsluCounter, 989 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s 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, 3.3s IncrementalHoareTripleChecker+Time [2023-02-14 02:19:20,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [717 Valid, 1687 Invalid, 759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 754 Invalid, 1 Unknown, 0 Unchecked, 3.3s Time] [2023-02-14 02:19:20,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1502 states. [2023-02-14 02:19:20,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1502 to 1325. [2023-02-14 02:19:20,890 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 02:19:20,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1325 states to 1325 states and 1872 transitions. [2023-02-14 02:19:20,893 INFO L78 Accepts]: Start accepts. Automaton has 1325 states and 1872 transitions. Word has length 88 [2023-02-14 02:19:20,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 02:19:20,893 INFO L495 AbstractCegarLoop]: Abstraction has 1325 states and 1872 transitions. [2023-02-14 02:19:20,893 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 02:19:20,893 INFO L276 IsEmpty]: Start isEmpty. Operand 1325 states and 1872 transitions. [2023-02-14 02:19:20,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-02-14 02:19:20,895 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:19:20,896 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 02:19:20,916 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 02:19:21,108 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 02:19:21,109 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 02:19:21,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:19:21,109 INFO L85 PathProgramCache]: Analyzing trace with hash -3613150, now seen corresponding path program 1 times [2023-02-14 02:19:21,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 02:19:21,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [288342046] [2023-02-14 02:19:21,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:19:21,110 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 02:19:21,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 02:19:21,111 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 02:19:21,112 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 02:19:22,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:19:22,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 893 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-14 02:19:22,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:19:22,974 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-02-14 02:19:22,974 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 02:19:23,133 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 02:19:23,133 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 02:19:23,133 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 02:19:23,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [288342046] [2023-02-14 02:19:23,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [288342046] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 02:19:23,134 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 02:19:23,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-14 02:19:23,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272038795] [2023-02-14 02:19:23,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 02:19:23,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-14 02:19:23,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 02:19:23,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-14 02:19:23,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-14 02:19:23,134 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 02:19:25,152 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 02:19:26,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 02:19:26,291 INFO L93 Difference]: Finished difference Result 1376 states and 1879 transitions. [2023-02-14 02:19:26,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-14 02:19:26,291 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 02:19:26,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 02:19:26,294 INFO L225 Difference]: With dead ends: 1376 [2023-02-14 02:19:26,295 INFO L226 Difference]: Without dead ends: 1376 [2023-02-14 02:19:26,295 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 02:19:26,295 INFO L413 NwaCegarLoop]: 763 mSDtfsCounter, 123 mSDsluCounter, 1085 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 1848 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-02-14 02:19:26,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 1848 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 516 Invalid, 1 Unknown, 0 Unchecked, 3.1s Time] [2023-02-14 02:19:26,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1376 states. [2023-02-14 02:19:26,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1376 to 1323. [2023-02-14 02:19:26,308 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 02:19:26,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1323 states to 1323 states and 1869 transitions. [2023-02-14 02:19:26,310 INFO L78 Accepts]: Start accepts. Automaton has 1323 states and 1869 transitions. Word has length 88 [2023-02-14 02:19:26,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 02:19:26,311 INFO L495 AbstractCegarLoop]: Abstraction has 1323 states and 1869 transitions. [2023-02-14 02:19:26,311 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 02:19:26,311 INFO L276 IsEmpty]: Start isEmpty. Operand 1323 states and 1869 transitions. [2023-02-14 02:19:26,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-02-14 02:19:26,311 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:19:26,312 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 02:19:26,327 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 (27)] Ended with exit code 0 [2023-02-14 02:19:26,527 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 02:19:26,528 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 02:19:26,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:19:26,528 INFO L85 PathProgramCache]: Analyzing trace with hash -112007323, now seen corresponding path program 1 times [2023-02-14 02:19:26,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 02:19:26,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1847762723] [2023-02-14 02:19:26,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:19:26,529 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 02:19:26,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 02:19:26,530 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 02:19:26,531 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 02:19:27,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:19:27,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 906 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-14 02:19:27,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:19:28,158 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-02-14 02:19:28,158 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 02:19:28,197 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 02:19:28,255 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 02:19:28,256 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 02:19:28,256 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 02:19:28,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1847762723] [2023-02-14 02:19:28,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1847762723] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 02:19:28,256 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 02:19:28,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 02:19:28,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493071402] [2023-02-14 02:19:28,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 02:19:28,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-14 02:19:28,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 02:19:28,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-14 02:19:28,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-14 02:19:28,257 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 02:19:30,276 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 02:19:32,282 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 02:19:33,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 02:19:33,936 INFO L93 Difference]: Finished difference Result 1498 states and 1881 transitions. [2023-02-14 02:19:33,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-14 02:19:33,936 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 02:19:33,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 02:19:33,939 INFO L225 Difference]: With dead ends: 1498 [2023-02-14 02:19:33,939 INFO L226 Difference]: Without dead ends: 1498 [2023-02-14 02:19:33,940 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 02:19:33,940 INFO L413 NwaCegarLoop]: 668 mSDtfsCounter, 1076 mSDsluCounter, 1341 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 58 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s 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, 5.6s IncrementalHoareTripleChecker+Time [2023-02-14 02:19:33,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1076 Valid, 2009 Invalid, 1141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 1081 Invalid, 2 Unknown, 0 Unchecked, 5.6s Time] [2023-02-14 02:19:33,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1498 states. [2023-02-14 02:19:33,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1498 to 1321. [2023-02-14 02:19:33,952 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 02:19:33,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1321 states to 1321 states and 1867 transitions. [2023-02-14 02:19:33,953 INFO L78 Accepts]: Start accepts. Automaton has 1321 states and 1867 transitions. Word has length 89 [2023-02-14 02:19:33,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 02:19:33,954 INFO L495 AbstractCegarLoop]: Abstraction has 1321 states and 1867 transitions. [2023-02-14 02:19:33,954 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 02:19:33,954 INFO L276 IsEmpty]: Start isEmpty. Operand 1321 states and 1867 transitions. [2023-02-14 02:19:33,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-02-14 02:19:33,954 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:19:33,955 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 02:19:33,970 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2023-02-14 02:19:34,161 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 02:19:34,161 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 02:19:34,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:19:34,161 INFO L85 PathProgramCache]: Analyzing trace with hash -112007322, now seen corresponding path program 1 times [2023-02-14 02:19:34,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 02:19:34,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [440017997] [2023-02-14 02:19:34,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:19:34,162 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 02:19:34,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 02:19:34,163 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 02:19:34,163 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 02:19:35,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:19:35,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 906 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-14 02:19:35,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:19:36,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 02:19:36,105 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 02:19:36,222 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 02:19:36,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 02:19:36,488 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 02:19:36,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [440017997] [2023-02-14 02:19:36,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [440017997] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 02:19:36,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1701155040] [2023-02-14 02:19:36,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:19:36,489 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-02-14 02:19:36,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-02-14 02:19:36,489 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 02:19:36,490 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 02:19:38,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:19:38,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 906 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-14 02:19:38,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:19:39,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 02:19:39,093 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 02:19:39,195 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 02:19:39,195 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 02:19:39,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1701155040] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 02:19:39,401 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-14 02:19:39,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2023-02-14 02:19:39,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75972673] [2023-02-14 02:19:39,402 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-14 02:19:39,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-14 02:19:39,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 02:19:39,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-14 02:19:39,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-02-14 02:19:39,403 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 02:19:41,421 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 02:19:43,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 02:19:43,917 INFO L93 Difference]: Finished difference Result 1565 states and 1893 transitions. [2023-02-14 02:19:43,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-14 02:19:43,917 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 02:19:43,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 02:19:43,920 INFO L225 Difference]: With dead ends: 1565 [2023-02-14 02:19:43,920 INFO L226 Difference]: Without dead ends: 1565 [2023-02-14 02:19:43,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 225 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-02-14 02:19:43,920 INFO L413 NwaCegarLoop]: 579 mSDtfsCounter, 1368 mSDsluCounter, 1286 mSDsCounter, 0 mSdLazyCounter, 1251 mSolverCounterSat, 78 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s 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, 4.4s IncrementalHoareTripleChecker+Time [2023-02-14 02:19:43,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1368 Valid, 1865 Invalid, 1330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1251 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2023-02-14 02:19:43,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1565 states. [2023-02-14 02:19:43,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1565 to 1319. [2023-02-14 02:19:43,932 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 02:19:43,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 1865 transitions. [2023-02-14 02:19:43,934 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 1865 transitions. Word has length 89 [2023-02-14 02:19:43,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 02:19:43,934 INFO L495 AbstractCegarLoop]: Abstraction has 1319 states and 1865 transitions. [2023-02-14 02:19:43,934 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 02:19:43,935 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 1865 transitions. [2023-02-14 02:19:43,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-02-14 02:19:43,935 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:19:43,935 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 02:19:43,953 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 02:19:44,168 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 02:19:44,353 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 02:19:44,354 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 02:19:44,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:19:44,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1939903835, now seen corresponding path program 1 times [2023-02-14 02:19:44,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 02:19:44,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2075602332] [2023-02-14 02:19:44,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:19:44,355 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 02:19:44,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 02:19:44,356 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 02:19:44,357 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 02:19:45,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:19:45,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 948 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-14 02:19:45,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:19:45,156 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 02:19:45,156 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 02:19:45,156 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 02:19:45,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2075602332] [2023-02-14 02:19:45,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2075602332] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 02:19:45,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 02:19:45,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-14 02:19:45,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399205950] [2023-02-14 02:19:45,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 02:19:45,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-14 02:19:45,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 02:19:45,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-14 02:19:45,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-14 02:19:45,157 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 02:19:47,176 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-14 02:19:49,181 WARN L539 Checker$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 02:19:50,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 02:19:50,844 INFO L93 Difference]: Finished difference Result 1494 states and 1877 transitions. [2023-02-14 02:19:50,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-14 02:19:50,845 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 02:19:50,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 02:19:50,847 INFO L225 Difference]: With dead ends: 1494 [2023-02-14 02:19:50,847 INFO L226 Difference]: Without dead ends: 1494 [2023-02-14 02:19:50,848 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 02:19:50,848 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, 5.6s IncrementalHoareTripleChecker+Time [2023-02-14 02:19:50,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [791 Valid, 2188 Invalid, 1106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1094 Invalid, 2 Unknown, 0 Unchecked, 5.6s Time] [2023-02-14 02:19:50,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1494 states. [2023-02-14 02:19:50,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1494 to 1317. [2023-02-14 02:19:50,860 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 02:19:50,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1317 states to 1317 states and 1863 transitions. [2023-02-14 02:19:50,862 INFO L78 Accepts]: Start accepts. Automaton has 1317 states and 1863 transitions. Word has length 96 [2023-02-14 02:19:50,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 02:19:50,862 INFO L495 AbstractCegarLoop]: Abstraction has 1317 states and 1863 transitions. [2023-02-14 02:19:50,862 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 02:19:50,862 INFO L276 IsEmpty]: Start isEmpty. Operand 1317 states and 1863 transitions. [2023-02-14 02:19:50,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-02-14 02:19:50,863 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:19:50,863 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 02:19:50,892 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 02:19:51,077 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 02:19:51,077 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 02:19:51,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:19:51,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1939903834, now seen corresponding path program 1 times [2023-02-14 02:19:51,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 02:19:51,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1636034265] [2023-02-14 02:19:51,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:19:51,078 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 02:19:51,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 02:19:51,079 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 02:19:51,080 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 02:19:52,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:19:52,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 948 conjuncts, 13 conjunts are in the unsatisfiable core [2023-02-14 02:19:52,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:19:53,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 02:19:53,276 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 02:19:53,524 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 02:19:53,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 02:19:56,030 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 02:19:56,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1636034265] [2023-02-14 02:19:56,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1636034265] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 02:19:56,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1473819963] [2023-02-14 02:19:56,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:19:56,031 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-02-14 02:19:56,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-02-14 02:19:56,031 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 02:19:56,032 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 02:19:58,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:19:58,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 948 conjuncts, 14 conjunts are in the unsatisfiable core [2023-02-14 02:19:58,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:19:58,652 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-02-14 02:19:58,653 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 02:19:58,758 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 02:19:59,106 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-02-14 02:19:59,107 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 02:19:59,142 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 02:19:59,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 02:19:59,496 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 02:20:02,189 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 02:20:02,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1473819963] provided 1 perfect and 1 imperfect interpolant sequences [2023-02-14 02:20:02,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-02-14 02:20:02,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [5, 8] total 17 [2023-02-14 02:20:02,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134241261] [2023-02-14 02:20:02,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 02:20:02,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-14 02:20:02,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-14 02:20:02,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-14 02:20:02,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=281, Unknown=2, NotChecked=0, Total=342 [2023-02-14 02:20:02,190 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 02:20:04,209 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-02-14 02:20:06,213 WARN L539 Checker$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 02:20:08,216 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 02:20:14,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 02:20:14,338 INFO L93 Difference]: Finished difference Result 1369 states and 1872 transitions. [2023-02-14 02:20:14,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-14 02:20:14,339 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 5 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 96 [2023-02-14 02:20:14,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 02:20:14,342 INFO L225 Difference]: With dead ends: 1369 [2023-02-14 02:20:14,342 INFO L226 Difference]: Without dead ends: 1369 [2023-02-14 02:20:14,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 302 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=63, Invalid=315, Unknown=2, NotChecked=0, Total=380 [2023-02-14 02:20:14,342 INFO L413 NwaCegarLoop]: 744 mSDtfsCounter, 297 mSDsluCounter, 3063 mSDsCounter, 0 mSdLazyCounter, 1703 mSolverCounterSat, 14 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 3807 SdHoareTripleChecker+Invalid, 1720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1703 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.0s IncrementalHoareTripleChecker+Time [2023-02-14 02:20:14,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 3807 Invalid, 1720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1703 Invalid, 3 Unknown, 0 Unchecked, 12.0s Time] [2023-02-14 02:20:14,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1369 states. [2023-02-14 02:20:14,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1369 to 1316. [2023-02-14 02:20:14,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1316 states, 857 states have (on average 1.7246207701283547) internal successors, (1478), 1054 states have internal predecessors, (1478), 192 states have call successors, (192), 85 states have call predecessors, (192), 85 states have return successors, (192), 189 states have call predecessors, (192), 192 states have call successors, (192) [2023-02-14 02:20:14,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1316 states to 1316 states and 1862 transitions. [2023-02-14 02:20:14,356 INFO L78 Accepts]: Start accepts. Automaton has 1316 states and 1862 transitions. Word has length 96 [2023-02-14 02:20:14,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 02:20:14,356 INFO L495 AbstractCegarLoop]: Abstraction has 1316 states and 1862 transitions. [2023-02-14 02:20:14,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 5 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-02-14 02:20:14,357 INFO L276 IsEmpty]: Start isEmpty. Operand 1316 states and 1862 transitions. [2023-02-14 02:20:14,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-02-14 02:20:14,357 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 02:20:14,357 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 02:20:14,391 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (33)] Forceful destruction successful, exit code 0 [2023-02-14 02:20:14,590 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2023-02-14 02:20:14,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-14 02:20:14,774 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting cdev_addErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 202 more)] === [2023-02-14 02:20:14,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 02:20:14,774 INFO L85 PathProgramCache]: Analyzing trace with hash -7475738, now seen corresponding path program 1 times [2023-02-14 02:20:14,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-14 02:20:14,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [166364618] [2023-02-14 02:20:14,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:20:14,775 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 02:20:14,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-14 02:20:14,776 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-14 02:20:14,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2023-02-14 02:20:15,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:20:15,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 970 conjuncts, 13 conjunts are in the unsatisfiable core [2023-02-14 02:20:15,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:20:16,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-14 02:20:16,461 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 02:20:16,706 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 02:20:16,707 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 02:20:17,231 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-14 02:20:17,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [166364618] [2023-02-14 02:20:17,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [166364618] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 02:20:17,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [49528911] [2023-02-14 02:20:17,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 02:20:17,232 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-02-14 02:20:17,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2023-02-14 02:20:17,233 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-02-14 02:20:17,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (35)] Waiting until timeout for monitored process [2023-02-14 02:20:19,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 02:20:19,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 970 conjuncts, 14 conjunts are in the unsatisfiable core [2023-02-14 02:20:19,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 02:20:19,998 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-02-14 02:20:19,998 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 02:20:20,137 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 02:20:20,483 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-02-14 02:20:20,484 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 02:20:20,520 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 02:20:20,520 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 02:20:20,853 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