./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inw_p.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e19ca921 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_inw_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 cd6b300b335accb35f3a48bfd0f387908f589dfb4e32ea4d19ee0b855e6625b4 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 00:13:54,223 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 00:13:54,225 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 00:13:54,271 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 00:13:54,287 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 00:13:54,289 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 00:13:54,290 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 00:13:54,291 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 00:13:54,293 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 00:13:54,293 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 00:13:54,294 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 00:13:54,295 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 00:13:54,295 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 00:13:54,296 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 00:13:54,297 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 00:13:54,298 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 00:13:54,298 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 00:13:54,299 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 00:13:54,301 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 00:13:54,302 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 00:13:54,303 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 00:13:54,304 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 00:13:54,305 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 00:13:54,305 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 00:13:54,307 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 00:13:54,308 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 00:13:54,308 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 00:13:54,309 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 00:13:54,309 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 00:13:54,310 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 00:13:54,310 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 00:13:54,311 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 00:13:54,311 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 00:13:54,312 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 00:13:54,313 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 00:13:54,313 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 00:13:54,314 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 00:13:54,314 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 00:13:54,314 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 00:13:54,315 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 00:13:54,316 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 00:13:54,317 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-22 00:13:54,338 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 00:13:54,339 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 00:13:54,340 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 00:13:54,340 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 00:13:54,341 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 00:13:54,341 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 00:13:54,341 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 00:13:54,342 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 00:13:54,342 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 00:13:54,342 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 00:13:54,343 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 00:13:54,343 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-22 00:13:54,343 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 00:13:54,343 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 00:13:54,344 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 00:13:54,344 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-22 00:13:54,344 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-22 00:13:54,344 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-22 00:13:54,344 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 00:13:54,345 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-22 00:13:54,345 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 00:13:54,345 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 00:13:54,345 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 00:13:54,345 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 00:13:54,346 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 00:13:54,346 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 00:13:54,346 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 00:13:54,346 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 00:13:54,346 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 00:13:54,347 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 00:13:54,347 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 00:13:54,347 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cd6b300b335accb35f3a48bfd0f387908f589dfb4e32ea4d19ee0b855e6625b4 [2021-12-22 00:13:54,591 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 00:13:54,610 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 00:13:54,613 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 00:13:54,614 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 00:13:54,614 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 00:13:54,615 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inw_p.i [2021-12-22 00:13:54,672 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aeb32ec05/408729e45ee841f296b3377876f59fe9/FLAG1fbee79db [2021-12-22 00:13:55,219 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 00:13:55,220 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inw_p.i [2021-12-22 00:13:55,255 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aeb32ec05/408729e45ee841f296b3377876f59fe9/FLAG1fbee79db [2021-12-22 00:13:55,694 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aeb32ec05/408729e45ee841f296b3377876f59fe9 [2021-12-22 00:13:55,696 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 00:13:55,697 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 00:13:55,699 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 00:13:55,700 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 00:13:55,702 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 00:13:55,703 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:13:55" (1/1) ... [2021-12-22 00:13:55,704 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@742299f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:13:55, skipping insertion in model container [2021-12-22 00:13:55,704 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:13:55" (1/1) ... [2021-12-22 00:13:55,709 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 00:13:55,786 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 00:13:55,944 WARN L230 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_inw_p.i[457,470] [2021-12-22 00:13:56,679 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 00:13:56,704 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-12-22 00:13:56,705 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6ef8fc33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:13:56, skipping insertion in model container [2021-12-22 00:13:56,705 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 00:13:56,706 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-12-22 00:13:56,707 INFO L158 Benchmark]: Toolchain (without parser) took 1008.93ms. Allocated memory was 90.2MB in the beginning and 125.8MB in the end (delta: 35.7MB). Free memory was 55.6MB in the beginning and 73.6MB in the end (delta: -18.0MB). Peak memory consumption was 17.3MB. Max. memory is 16.1GB. [2021-12-22 00:13:56,708 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 90.2MB. Free memory is still 49.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 00:13:56,708 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1005.97ms. Allocated memory was 90.2MB in the beginning and 125.8MB in the end (delta: 35.7MB). Free memory was 55.3MB in the beginning and 73.6MB in the end (delta: -18.2MB). Peak memory consumption was 15.2MB. Max. memory is 16.1GB. [2021-12-22 00:13:56,709 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 90.2MB. Free memory is still 49.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1005.97ms. Allocated memory was 90.2MB in the beginning and 125.8MB in the end (delta: 35.7MB). Free memory was 55.3MB in the beginning and 73.6MB in the end (delta: -18.2MB). Peak memory consumption was 15.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2977]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/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_inw_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 cd6b300b335accb35f3a48bfd0f387908f589dfb4e32ea4d19ee0b855e6625b4 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 00:13:58,372 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 00:13:58,374 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 00:13:58,410 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 00:13:58,411 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 00:13:58,414 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 00:13:58,415 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 00:13:58,420 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 00:13:58,422 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 00:13:58,426 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 00:13:58,427 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 00:13:58,430 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 00:13:58,430 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 00:13:58,433 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 00:13:58,434 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 00:13:58,437 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 00:13:58,438 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 00:13:58,439 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 00:13:58,441 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 00:13:58,444 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 00:13:58,447 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 00:13:58,448 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 00:13:58,449 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 00:13:58,451 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 00:13:58,455 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 00:13:58,458 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 00:13:58,458 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 00:13:58,459 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 00:13:58,460 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 00:13:58,461 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 00:13:58,461 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 00:13:58,462 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 00:13:58,463 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 00:13:58,464 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 00:13:58,465 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 00:13:58,465 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 00:13:58,466 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 00:13:58,466 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 00:13:58,466 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 00:13:58,468 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 00:13:58,468 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 00:13:58,472 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-12-22 00:13:58,503 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 00:13:58,504 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 00:13:58,504 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 00:13:58,505 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 00:13:58,505 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 00:13:58,506 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 00:13:58,507 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 00:13:58,507 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 00:13:58,507 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 00:13:58,507 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 00:13:58,508 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 00:13:58,508 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-22 00:13:58,508 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 00:13:58,508 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 00:13:58,509 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 00:13:58,509 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-22 00:13:58,509 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-22 00:13:58,509 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-22 00:13:58,509 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 00:13:58,510 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-22 00:13:58,510 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-22 00:13:58,510 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-22 00:13:58,510 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 00:13:58,510 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 00:13:58,510 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 00:13:58,511 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 00:13:58,511 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 00:13:58,511 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 00:13:58,511 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 00:13:58,512 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 00:13:58,512 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-22 00:13:58,512 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-22 00:13:58,512 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 00:13:58,512 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-22 00:13:58,512 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cd6b300b335accb35f3a48bfd0f387908f589dfb4e32ea4d19ee0b855e6625b4 [2021-12-22 00:13:58,817 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 00:13:58,836 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 00:13:58,839 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 00:13:58,840 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 00:13:58,840 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 00:13:58,841 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inw_p.i [2021-12-22 00:13:58,895 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0deeb7d48/9b268fc52a68496aabe0c2f89592d2ad/FLAGf449e9329 [2021-12-22 00:13:59,468 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 00:13:59,472 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inw_p.i [2021-12-22 00:13:59,505 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0deeb7d48/9b268fc52a68496aabe0c2f89592d2ad/FLAGf449e9329 [2021-12-22 00:13:59,703 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0deeb7d48/9b268fc52a68496aabe0c2f89592d2ad [2021-12-22 00:13:59,707 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 00:13:59,708 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 00:13:59,711 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 00:13:59,712 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 00:13:59,714 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 00:13:59,716 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:13:59" (1/1) ... [2021-12-22 00:13:59,716 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@435688e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:13:59, skipping insertion in model container [2021-12-22 00:13:59,717 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:13:59" (1/1) ... [2021-12-22 00:13:59,723 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 00:13:59,790 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 00:13:59,981 WARN L230 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_inw_p.i[457,470] [2021-12-22 00:14:00,722 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 00:14:00,765 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-22 00:14:00,791 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 00:14:00,794 WARN L230 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_inw_p.i[457,470] [2021-12-22 00:14:00,972 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 00:14:00,995 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 00:14:01,004 WARN L230 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_inw_p.i[457,470] [2021-12-22 00:14:01,159 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 00:14:01,297 INFO L208 MainTranslator]: Completed translation [2021-12-22 00:14:01,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:14:01 WrapperNode [2021-12-22 00:14:01,298 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 00:14:01,299 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 00:14:01,299 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 00:14:01,299 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 00:14:01,305 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:14:01" (1/1) ... [2021-12-22 00:14:01,395 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:14:01" (1/1) ... [2021-12-22 00:14:01,473 INFO L137 Inliner]: procedures = 482, calls = 839, calls flagged for inlining = 54, calls inlined = 37, statements flattened = 970 [2021-12-22 00:14:01,474 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 00:14:01,475 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 00:14:01,475 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 00:14:01,475 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 00:14:01,482 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:14:01" (1/1) ... [2021-12-22 00:14:01,482 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:14:01" (1/1) ... [2021-12-22 00:14:01,497 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:14:01" (1/1) ... [2021-12-22 00:14:01,497 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:14:01" (1/1) ... [2021-12-22 00:14:01,543 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:14:01" (1/1) ... [2021-12-22 00:14:01,563 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:14:01" (1/1) ... [2021-12-22 00:14:01,573 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:14:01" (1/1) ... [2021-12-22 00:14:01,582 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 00:14:01,589 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 00:14:01,590 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 00:14:01,590 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 00:14:01,590 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:14:01" (1/1) ... [2021-12-22 00:14:01,596 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 00:14:01,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 00:14:01,616 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) [2021-12-22 00:14:01,641 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 [2021-12-22 00:14:01,656 INFO L130 BoogieDeclarations]: Found specification of procedure zf_timer_off [2021-12-22 00:14:01,656 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_timer_off [2021-12-22 00:14:01,656 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~C_UINT~X~C_ULONG~TO~C_INT [2021-12-22 00:14:01,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~C_UINT~X~C_ULONG~TO~C_INT [2021-12-22 00:14:01,657 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-12-22 00:14:01,657 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_atomic_begin [2021-12-22 00:14:01,657 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-22 00:14:01,657 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-22 00:14:01,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 00:14:01,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-12-22 00:14:01,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-22 00:14:01,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-12-22 00:14:01,658 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-12-22 00:14:01,658 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-12-22 00:14:01,658 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-12-22 00:14:01,658 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_atomic_end [2021-12-22 00:14:01,658 INFO L130 BoogieDeclarations]: Found specification of procedure zf_get_control [2021-12-22 00:14:01,659 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_get_control [2021-12-22 00:14:01,659 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2021-12-22 00:14:01,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2021-12-22 00:14:01,659 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-22 00:14:01,659 INFO L130 BoogieDeclarations]: Found specification of procedure request_region [2021-12-22 00:14:01,659 INFO L138 BoogieDeclarations]: Found implementation of procedure request_region [2021-12-22 00:14:01,659 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 00:14:01,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-22 00:14:01,660 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-22 00:14:01,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-22 00:14:01,660 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irqsave [2021-12-22 00:14:01,660 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irqsave [2021-12-22 00:14:01,660 INFO L130 BoogieDeclarations]: Found specification of procedure release_region [2021-12-22 00:14:01,660 INFO L138 BoogieDeclarations]: Found implementation of procedure release_region [2021-12-22 00:14:01,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 00:14:01,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 00:14:01,661 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_init [2021-12-22 00:14:01,661 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_init [2021-12-22 00:14:01,661 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-12-22 00:14:01,661 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-22 00:14:01,662 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-12-22 00:14:01,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-22 00:14:01,662 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-22 00:14:01,662 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-22 00:14:01,662 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2021-12-22 00:14:01,662 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2021-12-22 00:14:01,663 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 00:14:01,663 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-22 00:14:01,663 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2021-12-22 00:14:01,663 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2021-12-22 00:14:01,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-12-22 00:14:01,664 INFO L130 BoogieDeclarations]: Found specification of procedure cdev_add [2021-12-22 00:14:01,664 INFO L138 BoogieDeclarations]: Found implementation of procedure cdev_add [2021-12-22 00:14:01,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-12-22 00:14:01,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-12-22 00:14:01,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-22 00:14:01,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-22 00:14:01,668 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2021-12-22 00:14:01,668 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2021-12-22 00:14:01,669 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2021-12-22 00:14:01,669 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2021-12-22 00:14:01,669 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2021-12-22 00:14:01,669 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2021-12-22 00:14:01,669 INFO L130 BoogieDeclarations]: Found specification of procedure misc_deregister [2021-12-22 00:14:01,669 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_deregister [2021-12-22 00:14:01,669 INFO L130 BoogieDeclarations]: Found specification of procedure assert_context_process [2021-12-22 00:14:01,669 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_context_process [2021-12-22 00:14:01,669 INFO L130 BoogieDeclarations]: Found specification of procedure zf_set_control [2021-12-22 00:14:01,669 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_set_control [2021-12-22 00:14:01,669 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~C_ULONG~X~$Pointer$~TO~C_LONG [2021-12-22 00:14:01,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~C_ULONG~X~$Pointer$~TO~C_LONG [2021-12-22 00:14:01,670 INFO L130 BoogieDeclarations]: Found specification of procedure zf_readw [2021-12-22 00:14:01,670 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_readw [2021-12-22 00:14:01,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-12-22 00:14:01,682 INFO L130 BoogieDeclarations]: Found specification of procedure zf_ping [2021-12-22 00:14:01,682 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_ping [2021-12-22 00:14:01,682 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-12-22 00:14:01,682 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-12-22 00:14:01,682 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~C_ULONG~TO~VOID [2021-12-22 00:14:01,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~C_ULONG~TO~VOID [2021-12-22 00:14:02,025 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 00:14:02,027 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 00:14:06,705 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 00:14:06,724 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 00:14:06,724 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-12-22 00:14:06,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:14:06 BoogieIcfgContainer [2021-12-22 00:14:06,729 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 00:14:06,730 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 00:14:06,730 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 00:14:06,733 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 00:14:06,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 12:13:59" (1/3) ... [2021-12-22 00:14:06,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58f0b828 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:14:06, skipping insertion in model container [2021-12-22 00:14:06,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:14:01" (2/3) ... [2021-12-22 00:14:06,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58f0b828 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:14:06, skipping insertion in model container [2021-12-22 00:14:06,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:14:06" (3/3) ... [2021-12-22 00:14:06,746 INFO L111 eAbstractionObserver]: Analyzing ICFG ddv_machzwd_inw_p.i [2021-12-22 00:14:06,752 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 00:14:06,752 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 205 error locations. [2021-12-22 00:14:06,790 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 00:14:06,797 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-22 00:14:06,797 INFO L340 AbstractCegarLoop]: Starting to check reachability of 205 error locations. [2021-12-22 00:14:06,825 INFO L276 IsEmpty]: Start isEmpty. Operand has 666 states, 356 states have (on average 1.8202247191011236) internal successors, (648), 566 states have internal predecessors, (648), 78 states have call successors, (78), 26 states have call predecessors, (78), 26 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2021-12-22 00:14:06,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-22 00:14:06,830 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:14:06,842 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-22 00:14:06,842 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting spin_lock_initErr0REQUIRES_VIOLATION === [spin_lock_initErr0REQUIRES_VIOLATION, spin_lock_initErr1REQUIRES_VIOLATION, spin_lock_initErr2REQUIRES_VIOLATION, spin_lock_initErr3REQUIRES_VIOLATION (and 201 more)] === [2021-12-22 00:14:06,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:14:06,847 INFO L85 PathProgramCache]: Analyzing trace with hash 333908101, now seen corresponding path program 1 times [2021-12-22 00:14:06,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 00:14:06,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [342295860] [2021-12-22 00:14:06,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:14:06,861 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 00:14:06,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 00:14:06,864 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 00:14:06,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-22 00:14:07,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:14:07,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-22 00:14:07,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:14:07,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:14:07,393 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 00:14:07,394 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 00:14:07,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [342295860] [2021-12-22 00:14:07,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [342295860] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:14:07,395 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:14:07,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 00:14:07,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137995712] [2021-12-22 00:14:07,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:14:07,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 00:14:07,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 00:14:07,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 00:14:07,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 00:14:07,437 INFO L87 Difference]: Start difference. First operand has 666 states, 356 states have (on average 1.8202247191011236) internal successors, (648), 566 states have internal predecessors, (648), 78 states have call successors, (78), 26 states have call predecessors, (78), 26 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) Second operand has 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) [2021-12-22 00:14:09,470 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 00:14:11,479 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 00:14:13,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:14:13,770 INFO L93 Difference]: Finished difference Result 1204 states and 1443 transitions. [2021-12-22 00:14:13,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 00:14:13,773 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 [2021-12-22 00:14:13,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:14:13,787 INFO L225 Difference]: With dead ends: 1204 [2021-12-22 00:14:13,788 INFO L226 Difference]: Without dead ends: 1200 [2021-12-22 00:14:13,789 INFO L932 BasicCegarLoop]: 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 [2021-12-22 00:14:13,791 INFO L933 BasicCegarLoop]: 759 mSDtfsCounter, 687 mSDsluCounter, 1725 mSDsCounter, 0 mSdLazyCounter, 1106 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 688 SdHoareTripleChecker+Valid, 2484 SdHoareTripleChecker+Invalid, 1112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1106 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2021-12-22 00:14:13,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [688 Valid, 2484 Invalid, 1112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1106 Invalid, 2 Unknown, 0 Unchecked, 6.2s Time] [2021-12-22 00:14:13,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1200 states. [2021-12-22 00:14:13,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1200 to 987. [2021-12-22 00:14:13,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 987 states, 594 states have (on average 1.803030303030303) internal successors, (1071), 814 states have internal predecessors, (1071), 138 states have call successors, (138), 50 states have call predecessors, (138), 50 states have return successors, (138), 131 states have call predecessors, (138), 138 states have call successors, (138) [2021-12-22 00:14:13,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 987 states to 987 states and 1347 transitions. [2021-12-22 00:14:13,887 INFO L78 Accepts]: Start accepts. Automaton has 987 states and 1347 transitions. Word has length 5 [2021-12-22 00:14:13,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:14:13,887 INFO L470 AbstractCegarLoop]: Abstraction has 987 states and 1347 transitions. [2021-12-22 00:14:13,887 INFO L471 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) [2021-12-22 00:14:13,887 INFO L276 IsEmpty]: Start isEmpty. Operand 987 states and 1347 transitions. [2021-12-22 00:14:13,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-22 00:14:13,888 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:14:13,888 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-22 00:14:13,919 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-22 00:14:14,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 00:14:14,112 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting spin_lock_initErr1REQUIRES_VIOLATION === [spin_lock_initErr0REQUIRES_VIOLATION, spin_lock_initErr1REQUIRES_VIOLATION, spin_lock_initErr2REQUIRES_VIOLATION, spin_lock_initErr3REQUIRES_VIOLATION (and 201 more)] === [2021-12-22 00:14:14,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:14:14,113 INFO L85 PathProgramCache]: Analyzing trace with hash 333908102, now seen corresponding path program 1 times [2021-12-22 00:14:14,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 00:14:14,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2016223197] [2021-12-22 00:14:14,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:14:14,114 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 00:14:14,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 00:14:14,115 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 00:14:14,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-22 00:14:14,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:14:14,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-22 00:14:14,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:14:14,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:14:14,513 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 00:14:14,513 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 00:14:14,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2016223197] [2021-12-22 00:14:14,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2016223197] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:14:14,513 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:14:14,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 00:14:14,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420756257] [2021-12-22 00:14:14,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:14:14,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 00:14:14,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 00:14:14,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 00:14:14,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 00:14:14,516 INFO L87 Difference]: Start difference. First operand 987 states and 1347 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) [2021-12-22 00:14:16,540 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 00:14:18,549 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 00:14:20,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:14:20,574 INFO L93 Difference]: Finished difference Result 1119 states and 1439 transitions. [2021-12-22 00:14:20,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 00:14:20,575 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 [2021-12-22 00:14:20,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:14:20,581 INFO L225 Difference]: With dead ends: 1119 [2021-12-22 00:14:20,582 INFO L226 Difference]: Without dead ends: 1119 [2021-12-22 00:14:20,582 INFO L932 BasicCegarLoop]: 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 [2021-12-22 00:14:20,583 INFO L933 BasicCegarLoop]: 840 mSDtfsCounter, 268 mSDsluCounter, 1790 mSDsCounter, 0 mSdLazyCounter, 850 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 2630 SdHoareTripleChecker+Invalid, 853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 850 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2021-12-22 00:14:20,583 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [269 Valid, 2630 Invalid, 853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 850 Invalid, 2 Unknown, 0 Unchecked, 6.0s Time] [2021-12-22 00:14:20,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1119 states. [2021-12-22 00:14:20,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1119 to 1060. [2021-12-22 00:14:20,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1060 states, 635 states have (on average 1.7653543307086614) internal successors, (1121), 856 states have internal predecessors, (1121), 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) [2021-12-22 00:14:20,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1060 states to 1060 states and 1435 transitions. [2021-12-22 00:14:20,617 INFO L78 Accepts]: Start accepts. Automaton has 1060 states and 1435 transitions. Word has length 5 [2021-12-22 00:14:20,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:14:20,617 INFO L470 AbstractCegarLoop]: Abstraction has 1060 states and 1435 transitions. [2021-12-22 00:14:20,617 INFO L471 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) [2021-12-22 00:14:20,618 INFO L276 IsEmpty]: Start isEmpty. Operand 1060 states and 1435 transitions. [2021-12-22 00:14:20,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-22 00:14:20,618 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:14:20,618 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:14:20,631 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-12-22 00:14:20,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 00:14:20,828 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [spin_lock_initErr0REQUIRES_VIOLATION, spin_lock_initErr1REQUIRES_VIOLATION, spin_lock_initErr2REQUIRES_VIOLATION, spin_lock_initErr3REQUIRES_VIOLATION (and 201 more)] === [2021-12-22 00:14:20,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:14:20,828 INFO L85 PathProgramCache]: Analyzing trace with hash -863937403, now seen corresponding path program 1 times [2021-12-22 00:14:20,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 00:14:20,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1125072428] [2021-12-22 00:14:20,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:14:20,830 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 00:14:20,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 00:14:20,831 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 00:14:20,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-22 00:14:21,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:14:21,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-22 00:14:21,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:14:21,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:14:21,248 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 00:14:21,249 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 00:14:21,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1125072428] [2021-12-22 00:14:21,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1125072428] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:14:21,249 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:14:21,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-12-22 00:14:21,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758464805] [2021-12-22 00:14:21,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:14:21,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 00:14:21,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 00:14:21,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 00:14:21,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:14:21,251 INFO L87 Difference]: Start difference. First operand 1060 states and 1435 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) [2021-12-22 00:14:22,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:14:22,419 INFO L93 Difference]: Finished difference Result 1266 states and 1522 transitions. [2021-12-22 00:14:22,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 00:14:22,420 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 [2021-12-22 00:14:22,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:14:22,426 INFO L225 Difference]: With dead ends: 1266 [2021-12-22 00:14:22,426 INFO L226 Difference]: Without dead ends: 1266 [2021-12-22 00:14:22,427 INFO L932 BasicCegarLoop]: 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 [2021-12-22 00:14:22,428 INFO L933 BasicCegarLoop]: 742 mSDtfsCounter, 660 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 660 SdHoareTripleChecker+Valid, 1290 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-22 00:14:22,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [660 Valid, 1290 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-22 00:14:22,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1266 states. [2021-12-22 00:14:22,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1266 to 1059. [2021-12-22 00:14:22,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1059 states, 635 states have (on average 1.75748031496063) internal successors, (1116), 855 states have internal predecessors, (1116), 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) [2021-12-22 00:14:22,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1059 states to 1059 states and 1430 transitions. [2021-12-22 00:14:22,460 INFO L78 Accepts]: Start accepts. Automaton has 1059 states and 1430 transitions. Word has length 11 [2021-12-22 00:14:22,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:14:22,460 INFO L470 AbstractCegarLoop]: Abstraction has 1059 states and 1430 transitions. [2021-12-22 00:14:22,460 INFO L471 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) [2021-12-22 00:14:22,461 INFO L276 IsEmpty]: Start isEmpty. Operand 1059 states and 1430 transitions. [2021-12-22 00:14:22,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-22 00:14:22,477 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:14:22,477 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:14:22,494 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-12-22 00:14:22,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 00:14:22,694 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [spin_lock_initErr0REQUIRES_VIOLATION, spin_lock_initErr1REQUIRES_VIOLATION, spin_lock_initErr2REQUIRES_VIOLATION, spin_lock_initErr3REQUIRES_VIOLATION (and 201 more)] === [2021-12-22 00:14:22,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:14:22,695 INFO L85 PathProgramCache]: Analyzing trace with hash -863937402, now seen corresponding path program 1 times [2021-12-22 00:14:22,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 00:14:22,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2116574324] [2021-12-22 00:14:22,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:14:22,695 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 00:14:22,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 00:14:22,696 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 00:14:22,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-22 00:14:23,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:14:23,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-22 00:14:23,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:14:23,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:14:23,160 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 00:14:23,160 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 00:14:23,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2116574324] [2021-12-22 00:14:23,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2116574324] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:14:23,161 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:14:23,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 00:14:23,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685228787] [2021-12-22 00:14:23,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:14:23,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 00:14:23,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 00:14:23,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 00:14:23,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-22 00:14:23,163 INFO L87 Difference]: Start difference. First operand 1059 states and 1430 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) [2021-12-22 00:14:25,185 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 00:14:26,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:14:26,533 INFO L93 Difference]: Finished difference Result 1125 states and 1445 transitions. [2021-12-22 00:14:26,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 00:14:26,533 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 [2021-12-22 00:14:26,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:14:26,538 INFO L225 Difference]: With dead ends: 1125 [2021-12-22 00:14:26,538 INFO L226 Difference]: Without dead ends: 1125 [2021-12-22 00:14:26,538 INFO L932 BasicCegarLoop]: 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 [2021-12-22 00:14:26,539 INFO L933 BasicCegarLoop]: 837 mSDtfsCounter, 268 mSDsluCounter, 677 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 1514 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-12-22 00:14:26,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [268 Valid, 1514 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 410 Invalid, 1 Unknown, 0 Unchecked, 3.3s Time] [2021-12-22 00:14:26,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1125 states. [2021-12-22 00:14:26,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1125 to 1062. [2021-12-22 00:14:26,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1062 states, 638 states have (on average 1.7539184952978057) internal successors, (1119), 858 states have internal predecessors, (1119), 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) [2021-12-22 00:14:26,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1062 states to 1062 states and 1433 transitions. [2021-12-22 00:14:26,567 INFO L78 Accepts]: Start accepts. Automaton has 1062 states and 1433 transitions. Word has length 11 [2021-12-22 00:14:26,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:14:26,568 INFO L470 AbstractCegarLoop]: Abstraction has 1062 states and 1433 transitions. [2021-12-22 00:14:26,568 INFO L471 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) [2021-12-22 00:14:26,568 INFO L276 IsEmpty]: Start isEmpty. Operand 1062 states and 1433 transitions. [2021-12-22 00:14:26,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-22 00:14:26,569 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:14:26,569 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:14:26,589 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-12-22 00:14:26,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 00:14:26,784 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [spin_lock_initErr0REQUIRES_VIOLATION, spin_lock_initErr1REQUIRES_VIOLATION, spin_lock_initErr2REQUIRES_VIOLATION, spin_lock_initErr3REQUIRES_VIOLATION (and 201 more)] === [2021-12-22 00:14:26,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:14:26,784 INFO L85 PathProgramCache]: Analyzing trace with hash -2114831441, now seen corresponding path program 1 times [2021-12-22 00:14:26,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 00:14:26,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1628584219] [2021-12-22 00:14:26,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:14:26,785 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 00:14:26,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 00:14:26,786 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 00:14:26,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-22 00:14:27,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:14:27,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-22 00:14:27,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:14:27,353 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:14:27,353 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 00:14:27,683 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:14:27,683 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 00:14:27,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1628584219] [2021-12-22 00:14:27,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1628584219] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 00:14:27,684 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-22 00:14:27,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4] total 7 [2021-12-22 00:14:27,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124209302] [2021-12-22 00:14:27,684 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-22 00:14:27,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 00:14:27,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 00:14:27,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 00:14:27,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-22 00:14:27,685 INFO L87 Difference]: Start difference. First operand 1062 states and 1433 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) [2021-12-22 00:14:29,701 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 00:14:31,707 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 00:14:33,714 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 00:14:39,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:14:39,413 INFO L93 Difference]: Finished difference Result 1335 states and 1679 transitions. [2021-12-22 00:14:39,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 00:14:39,414 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 [2021-12-22 00:14:39,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:14:39,418 INFO L225 Difference]: With dead ends: 1335 [2021-12-22 00:14:39,418 INFO L226 Difference]: Without dead ends: 1335 [2021-12-22 00:14:39,419 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2021-12-22 00:14:39,419 INFO L933 BasicCegarLoop]: 838 mSDtfsCounter, 863 mSDsluCounter, 2512 mSDsCounter, 0 mSdLazyCounter, 1547 mSolverCounterSat, 125 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 875 SdHoareTripleChecker+Valid, 3350 SdHoareTripleChecker+Invalid, 1675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 1547 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2021-12-22 00:14:39,420 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [875 Valid, 3350 Invalid, 1675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 1547 Invalid, 3 Unknown, 0 Unchecked, 11.4s Time] [2021-12-22 00:14:39,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1335 states. [2021-12-22 00:14:39,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1335 to 1209. [2021-12-22 00:14:39,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1209 states, 742 states have (on average 1.7398921832884098) internal successors, (1291), 964 states have internal predecessors, (1291), 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) [2021-12-22 00:14:39,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1209 states to 1209 states and 1659 transitions. [2021-12-22 00:14:39,446 INFO L78 Accepts]: Start accepts. Automaton has 1209 states and 1659 transitions. Word has length 14 [2021-12-22 00:14:39,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:14:39,446 INFO L470 AbstractCegarLoop]: Abstraction has 1209 states and 1659 transitions. [2021-12-22 00:14:39,446 INFO L471 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) [2021-12-22 00:14:39,447 INFO L276 IsEmpty]: Start isEmpty. Operand 1209 states and 1659 transitions. [2021-12-22 00:14:39,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-22 00:14:39,447 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:14:39,447 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:14:39,467 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-12-22 00:14:39,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 00:14:39,661 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [spin_lock_initErr0REQUIRES_VIOLATION, spin_lock_initErr1REQUIRES_VIOLATION, spin_lock_initErr2REQUIRES_VIOLATION, spin_lock_initErr3REQUIRES_VIOLATION (and 201 more)] === [2021-12-22 00:14:39,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:14:39,662 INFO L85 PathProgramCache]: Analyzing trace with hash -846555216, now seen corresponding path program 1 times [2021-12-22 00:14:39,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 00:14:39,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1083023262] [2021-12-22 00:14:39,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 00:14:39,663 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 00:14:39,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 00:14:39,666 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 00:14:39,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-12-22 00:14:39,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 00:14:40,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 560 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-22 00:14:40,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:14:40,053 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:14:40,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 00:14:40,115 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:14:40,115 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 00:14:40,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1083023262] [2021-12-22 00:14:40,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1083023262] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 00:14:40,116 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-22 00:14:40,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-12-22 00:14:40,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254845623] [2021-12-22 00:14:40,116 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-22 00:14:40,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 00:14:40,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 00:14:40,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 00:14:40,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-22 00:14:40,117 INFO L87 Difference]: Start difference. First operand 1209 states and 1659 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) [2021-12-22 00:14:40,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:14:40,387 INFO L93 Difference]: Finished difference Result 1215 states and 1663 transitions. [2021-12-22 00:14:40,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-22 00:14:40,388 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 [2021-12-22 00:14:40,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:14:40,393 INFO L225 Difference]: With dead ends: 1215 [2021-12-22 00:14:40,393 INFO L226 Difference]: Without dead ends: 1215 [2021-12-22 00:14:40,393 INFO L932 BasicCegarLoop]: 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 [2021-12-22 00:14:40,394 INFO L933 BasicCegarLoop]: 785 mSDtfsCounter, 442 mSDsluCounter, 2810 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 474 SdHoareTripleChecker+Valid, 3595 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 00:14:40,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [474 Valid, 3595 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 00:14:40,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1215 states. [2021-12-22 00:14:40,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1215 to 1214. [2021-12-22 00:14:40,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1214 states, 747 states have (on average 1.7336010709504686) internal successors, (1295), 969 states have internal predecessors, (1295), 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) [2021-12-22 00:14:40,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1214 states to 1214 states and 1663 transitions. [2021-12-22 00:14:40,419 INFO L78 Accepts]: Start accepts. Automaton has 1214 states and 1663 transitions. Word has length 19 [2021-12-22 00:14:40,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:14:40,419 INFO L470 AbstractCegarLoop]: Abstraction has 1214 states and 1663 transitions. [2021-12-22 00:14:40,419 INFO L471 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) [2021-12-22 00:14:40,420 INFO L276 IsEmpty]: Start isEmpty. Operand 1214 states and 1663 transitions. [2021-12-22 00:14:40,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-22 00:14:40,420 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:14:40,420 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:14:40,434 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-12-22 00:14:40,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 00:14:40,635 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [spin_lock_initErr0REQUIRES_VIOLATION, spin_lock_initErr1REQUIRES_VIOLATION, spin_lock_initErr2REQUIRES_VIOLATION, spin_lock_initErr3REQUIRES_VIOLATION (and 201 more)] === [2021-12-22 00:14:40,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:14:40,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1706941254, now seen corresponding path program 2 times [2021-12-22 00:14:40,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 00:14:40,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [888914116] [2021-12-22 00:14:40,636 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-22 00:14:40,636 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 00:14:40,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 00:14:40,637 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 00:14:40,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-12-22 00:14:41,102 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-22 00:14:41,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 00:14:41,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 588 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-22 00:14:41,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:14:41,425 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:14:41,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 00:14:42,282 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 00:14:42,283 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 00:14:42,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [888914116] [2021-12-22 00:14:42,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [888914116] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 00:14:42,283 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-22 00:14:42,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 14 [2021-12-22 00:14:42,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094819528] [2021-12-22 00:14:42,283 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-22 00:14:42,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-22 00:14:42,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 00:14:42,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-22 00:14:42,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2021-12-22 00:14:42,284 INFO L87 Difference]: Start difference. First operand 1214 states and 1663 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) [2021-12-22 00:14:44,300 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 00:14:46,310 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 00:14:48,317 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 00:14:59,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 00:14:59,490 INFO L93 Difference]: Finished difference Result 1341 states and 1697 transitions. [2021-12-22 00:14:59,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-22 00:14:59,491 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 [2021-12-22 00:14:59,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 00:14:59,495 INFO L225 Difference]: With dead ends: 1341 [2021-12-22 00:14:59,495 INFO L226 Difference]: Without dead ends: 1341 [2021-12-22 00:14:59,495 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=243, Invalid=407, Unknown=0, NotChecked=0, Total=650 [2021-12-22 00:14:59,496 INFO L933 BasicCegarLoop]: 826 mSDtfsCounter, 1112 mSDsluCounter, 4369 mSDsCounter, 0 mSdLazyCounter, 2557 mSolverCounterSat, 202 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1124 SdHoareTripleChecker+Valid, 5195 SdHoareTripleChecker+Invalid, 2762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 2557 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.8s IncrementalHoareTripleChecker+Time [2021-12-22 00:14:59,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1124 Valid, 5195 Invalid, 2762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 2557 Invalid, 3 Unknown, 0 Unchecked, 15.8s Time] [2021-12-22 00:14:59,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states. [2021-12-22 00:14:59,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 1227. [2021-12-22 00:14:59,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1227 states, 760 states have (on average 1.725) internal successors, (1311), 982 states have internal predecessors, (1311), 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) [2021-12-22 00:14:59,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1227 states to 1227 states and 1679 transitions. [2021-12-22 00:14:59,521 INFO L78 Accepts]: Start accepts. Automaton has 1227 states and 1679 transitions. Word has length 23 [2021-12-22 00:14:59,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 00:14:59,521 INFO L470 AbstractCegarLoop]: Abstraction has 1227 states and 1679 transitions. [2021-12-22 00:14:59,521 INFO L471 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) [2021-12-22 00:14:59,522 INFO L276 IsEmpty]: Start isEmpty. Operand 1227 states and 1679 transitions. [2021-12-22 00:14:59,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-22 00:14:59,522 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 00:14:59,523 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 00:14:59,539 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-12-22 00:14:59,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 00:14:59,737 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [spin_lock_initErr0REQUIRES_VIOLATION, spin_lock_initErr1REQUIRES_VIOLATION, spin_lock_initErr2REQUIRES_VIOLATION, spin_lock_initErr3REQUIRES_VIOLATION (and 201 more)] === [2021-12-22 00:14:59,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 00:14:59,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1287411312, now seen corresponding path program 2 times [2021-12-22 00:14:59,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 00:14:59,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1675212121] [2021-12-22 00:14:59,738 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-22 00:14:59,739 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 00:14:59,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 00:14:59,739 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 00:14:59,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-12-22 00:15:00,075 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-22 00:15:00,075 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-22 00:15:00,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-22 00:15:00,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 00:15:00,247 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-12-22 00:15:00,247 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 00:15:00,247 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 00:15:00,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1675212121] [2021-12-22 00:15:00,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1675212121] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 00:15:00,248 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 00:15:00,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-12-22 00:15:00,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496012590] [2021-12-22 00:15:00,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 00:15:00,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 00:15:00,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 00:15:00,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 00:15:00,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 00:15:00,249 INFO L87 Difference]: Start difference. First operand 1227 states and 1679 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)