./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inl_p.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c3fed411 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_inl_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 822210afb67ed99ceea45b432aca8ec250ff4c38d2893c644887ddfbc667fadf --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 06:02:04,353 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 06:02:04,355 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 06:02:04,394 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 06:02:04,395 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 06:02:04,397 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 06:02:04,400 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 06:02:04,403 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 06:02:04,405 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 06:02:04,406 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 06:02:04,406 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 06:02:04,408 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 06:02:04,409 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 06:02:04,415 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 06:02:04,417 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 06:02:04,418 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 06:02:04,420 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 06:02:04,422 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 06:02:04,423 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 06:02:04,427 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 06:02:04,430 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 06:02:04,431 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 06:02:04,432 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 06:02:04,433 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 06:02:04,435 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 06:02:04,437 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 06:02:04,437 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 06:02:04,438 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 06:02:04,439 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 06:02:04,440 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 06:02:04,441 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 06:02:04,441 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 06:02:04,442 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 06:02:04,443 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 06:02:04,444 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 06:02:04,445 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 06:02:04,445 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 06:02:04,446 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 06:02:04,446 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 06:02:04,447 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 06:02:04,447 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 06:02:04,448 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-16 06:02:04,478 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 06:02:04,481 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 06:02:04,481 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 06:02:04,481 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 06:02:04,482 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 06:02:04,483 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 06:02:04,483 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 06:02:04,483 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 06:02:04,484 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 06:02:04,484 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 06:02:04,485 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 06:02:04,485 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-16 06:02:04,485 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 06:02:04,485 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 06:02:04,486 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 06:02:04,486 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-16 06:02:04,486 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-16 06:02:04,486 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-16 06:02:04,486 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 06:02:04,487 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-16 06:02:04,487 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 06:02:04,487 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 06:02:04,487 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 06:02:04,487 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 06:02:04,488 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 06:02:04,488 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 06:02:04,488 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 06:02:04,489 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 06:02:04,489 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 06:02:04,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 06:02:04,490 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 06:02:04,490 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 822210afb67ed99ceea45b432aca8ec250ff4c38d2893c644887ddfbc667fadf [2021-12-16 06:02:04,712 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 06:02:04,740 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 06:02:04,744 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 06:02:04,745 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 06:02:04,762 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 06:02:04,764 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inl_p.i [2021-12-16 06:02:04,819 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0b933d49/38a1d43d4fcf4957a58831eae4719d72/FLAG5434b3dc0 [2021-12-16 06:02:05,336 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 06:02:05,339 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inl_p.i [2021-12-16 06:02:05,378 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0b933d49/38a1d43d4fcf4957a58831eae4719d72/FLAG5434b3dc0 [2021-12-16 06:02:05,793 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0b933d49/38a1d43d4fcf4957a58831eae4719d72 [2021-12-16 06:02:05,795 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 06:02:05,796 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 06:02:05,798 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 06:02:05,798 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 06:02:05,802 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 06:02:05,803 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 06:02:05" (1/1) ... [2021-12-16 06:02:05,805 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@393011b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:02:05, skipping insertion in model container [2021-12-16 06:02:05,805 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 06:02:05" (1/1) ... [2021-12-16 06:02:05,811 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 06:02:05,907 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 06:02:06,050 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_inl_p.i[457,470] [2021-12-16 06:02:06,806 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 06:02:06,842 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) [2021-12-16 06:02:06,843 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6f20a3b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:02:06, skipping insertion in model container [2021-12-16 06:02:06,843 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 06:02:06,843 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-12-16 06:02:06,846 INFO L158 Benchmark]: Toolchain (without parser) took 1048.26ms. Allocated memory is still 90.2MB. Free memory was 49.7MB in the beginning and 58.9MB in the end (delta: -9.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2021-12-16 06:02:06,848 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 90.2MB. Free memory was 70.9MB in the beginning and 70.8MB in the end (delta: 86.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 06:02:06,849 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1045.76ms. Allocated memory is still 90.2MB. Free memory was 49.4MB in the beginning and 58.9MB in the end (delta: -9.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2021-12-16 06:02:06,851 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 90.2MB. Free memory was 70.9MB in the beginning and 70.8MB in the end (delta: 86.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1045.76ms. Allocated memory is still 90.2MB. Free memory was 49.4MB in the beginning and 58.9MB in the end (delta: -9.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2978]: 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_inl_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 822210afb67ed99ceea45b432aca8ec250ff4c38d2893c644887ddfbc667fadf --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 06:02:08,552 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 06:02:08,554 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 06:02:08,605 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 06:02:08,605 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 06:02:08,608 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 06:02:08,610 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 06:02:08,614 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 06:02:08,616 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 06:02:08,620 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 06:02:08,621 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 06:02:08,624 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 06:02:08,625 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 06:02:08,627 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 06:02:08,628 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 06:02:08,631 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 06:02:08,632 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 06:02:08,633 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 06:02:08,635 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 06:02:08,640 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 06:02:08,642 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 06:02:08,643 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 06:02:08,644 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 06:02:08,645 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 06:02:08,651 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 06:02:08,652 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 06:02:08,652 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 06:02:08,653 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 06:02:08,654 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 06:02:08,654 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 06:02:08,655 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 06:02:08,655 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 06:02:08,657 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 06:02:08,658 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 06:02:08,659 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 06:02:08,659 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 06:02:08,660 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 06:02:08,660 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 06:02:08,660 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 06:02:08,662 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 06:02:08,662 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 06:02:08,663 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-12-16 06:02:08,699 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 06:02:08,700 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 06:02:08,701 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 06:02:08,701 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 06:02:08,702 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 06:02:08,702 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 06:02:08,703 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 06:02:08,704 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 06:02:08,704 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 06:02:08,704 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 06:02:08,705 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 06:02:08,705 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-16 06:02:08,705 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 06:02:08,705 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 06:02:08,705 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 06:02:08,706 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-16 06:02:08,706 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-16 06:02:08,706 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-16 06:02:08,706 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 06:02:08,706 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-16 06:02:08,706 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-16 06:02:08,707 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-16 06:02:08,707 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 06:02:08,707 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 06:02:08,707 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 06:02:08,707 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 06:02:08,708 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 06:02:08,708 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 06:02:08,708 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 06:02:08,708 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 06:02:08,708 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-16 06:02:08,709 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-16 06:02:08,709 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 06:02:08,709 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-16 06:02:08,709 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 822210afb67ed99ceea45b432aca8ec250ff4c38d2893c644887ddfbc667fadf [2021-12-16 06:02:09,019 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 06:02:09,039 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 06:02:09,042 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 06:02:09,043 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 06:02:09,043 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 06:02:09,045 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inl_p.i [2021-12-16 06:02:09,101 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2db37af95/47fc353dc4ea43eab0e9a00bf1d6b821/FLAG3c6429adf [2021-12-16 06:02:09,778 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 06:02:09,778 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inl_p.i [2021-12-16 06:02:09,810 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2db37af95/47fc353dc4ea43eab0e9a00bf1d6b821/FLAG3c6429adf [2021-12-16 06:02:10,110 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2db37af95/47fc353dc4ea43eab0e9a00bf1d6b821 [2021-12-16 06:02:10,111 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 06:02:10,112 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 06:02:10,114 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 06:02:10,114 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 06:02:10,118 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 06:02:10,118 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 06:02:10" (1/1) ... [2021-12-16 06:02:10,119 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@735fc56b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:02:10, skipping insertion in model container [2021-12-16 06:02:10,119 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 06:02:10" (1/1) ... [2021-12-16 06:02:10,125 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 06:02:10,188 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 06:02:10,407 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_inl_p.i[457,470] [2021-12-16 06:02:11,485 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 06:02:11,518 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-16 06:02:11,532 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 06:02:11,535 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_inl_p.i[457,470] [2021-12-16 06:02:11,682 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 06:02:11,718 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 06:02:11,729 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_inl_p.i[457,470] [2021-12-16 06:02:11,889 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 06:02:12,037 INFO L208 MainTranslator]: Completed translation [2021-12-16 06:02:12,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:02:12 WrapperNode [2021-12-16 06:02:12,038 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 06:02:12,039 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 06:02:12,039 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 06:02:12,039 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 06:02:12,045 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:02:12" (1/1) ... [2021-12-16 06:02:12,107 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:02:12" (1/1) ... [2021-12-16 06:02:12,177 INFO L137 Inliner]: procedures = 482, calls = 839, calls flagged for inlining = 54, calls inlined = 37, statements flattened = 970 [2021-12-16 06:02:12,185 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 06:02:12,186 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 06:02:12,187 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 06:02:12,187 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 06:02:12,213 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:02:12" (1/1) ... [2021-12-16 06:02:12,213 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:02:12" (1/1) ... [2021-12-16 06:02:12,230 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:02:12" (1/1) ... [2021-12-16 06:02:12,231 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:02:12" (1/1) ... [2021-12-16 06:02:12,269 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:02:12" (1/1) ... [2021-12-16 06:02:12,275 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:02:12" (1/1) ... [2021-12-16 06:02:12,283 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:02:12" (1/1) ... [2021-12-16 06:02:12,293 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 06:02:12,294 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 06:02:12,295 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 06:02:12,295 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 06:02:12,295 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:02:12" (1/1) ... [2021-12-16 06:02:12,301 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 06:02:12,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 06:02:12,325 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) [2021-12-16 06:02:12,348 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 [2021-12-16 06:02:12,365 INFO L130 BoogieDeclarations]: Found specification of procedure zf_timer_off [2021-12-16 06:02:12,365 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_timer_off [2021-12-16 06:02:12,365 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~C_UINT~X~C_ULONG~TO~C_INT [2021-12-16 06:02:12,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~C_UINT~X~C_ULONG~TO~C_INT [2021-12-16 06:02:12,366 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-12-16 06:02:12,366 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_atomic_begin [2021-12-16 06:02:12,366 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-16 06:02:12,366 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-16 06:02:12,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-16 06:02:12,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-12-16 06:02:12,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-16 06:02:12,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-12-16 06:02:12,367 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-12-16 06:02:12,367 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-12-16 06:02:12,367 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-12-16 06:02:12,368 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_atomic_end [2021-12-16 06:02:12,368 INFO L130 BoogieDeclarations]: Found specification of procedure zf_get_control [2021-12-16 06:02:12,368 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_get_control [2021-12-16 06:02:12,368 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2021-12-16 06:02:12,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2021-12-16 06:02:12,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-16 06:02:12,369 INFO L130 BoogieDeclarations]: Found specification of procedure request_region [2021-12-16 06:02:12,369 INFO L138 BoogieDeclarations]: Found implementation of procedure request_region [2021-12-16 06:02:12,369 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 06:02:12,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-16 06:02:12,369 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-16 06:02:12,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-16 06:02:12,370 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irqsave [2021-12-16 06:02:12,370 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irqsave [2021-12-16 06:02:12,370 INFO L130 BoogieDeclarations]: Found specification of procedure release_region [2021-12-16 06:02:12,371 INFO L138 BoogieDeclarations]: Found implementation of procedure release_region [2021-12-16 06:02:12,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 06:02:12,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 06:02:12,371 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_init [2021-12-16 06:02:12,371 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_init [2021-12-16 06:02:12,371 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-12-16 06:02:12,371 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-16 06:02:12,372 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-12-16 06:02:12,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-16 06:02:12,372 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-16 06:02:12,372 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-16 06:02:12,372 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2021-12-16 06:02:12,373 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2021-12-16 06:02:12,373 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-16 06:02:12,373 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-16 06:02:12,373 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2021-12-16 06:02:12,373 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2021-12-16 06:02:12,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-12-16 06:02:12,374 INFO L130 BoogieDeclarations]: Found specification of procedure cdev_add [2021-12-16 06:02:12,374 INFO L138 BoogieDeclarations]: Found implementation of procedure cdev_add [2021-12-16 06:02:12,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-12-16 06:02:12,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-12-16 06:02:12,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-16 06:02:12,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-16 06:02:12,377 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2021-12-16 06:02:12,377 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2021-12-16 06:02:12,377 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2021-12-16 06:02:12,377 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2021-12-16 06:02:12,377 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2021-12-16 06:02:12,378 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2021-12-16 06:02:12,378 INFO L130 BoogieDeclarations]: Found specification of procedure misc_deregister [2021-12-16 06:02:12,378 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_deregister [2021-12-16 06:02:12,378 INFO L130 BoogieDeclarations]: Found specification of procedure assert_context_process [2021-12-16 06:02:12,378 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_context_process [2021-12-16 06:02:12,378 INFO L130 BoogieDeclarations]: Found specification of procedure zf_set_control [2021-12-16 06:02:12,378 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_set_control [2021-12-16 06:02:12,379 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~C_ULONG~X~$Pointer$~TO~C_LONG [2021-12-16 06:02:12,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~C_ULONG~X~$Pointer$~TO~C_LONG [2021-12-16 06:02:12,379 INFO L130 BoogieDeclarations]: Found specification of procedure zf_readw [2021-12-16 06:02:12,380 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_readw [2021-12-16 06:02:12,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-12-16 06:02:12,380 INFO L130 BoogieDeclarations]: Found specification of procedure zf_ping [2021-12-16 06:02:12,380 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_ping [2021-12-16 06:02:12,380 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-12-16 06:02:12,380 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-12-16 06:02:12,381 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~C_ULONG~TO~VOID [2021-12-16 06:02:12,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~C_ULONG~TO~VOID [2021-12-16 06:02:12,724 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 06:02:12,726 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 06:02:17,523 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 06:02:17,540 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 06:02:17,540 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-12-16 06:02:17,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 06:02:17 BoogieIcfgContainer [2021-12-16 06:02:17,546 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 06:02:17,548 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 06:02:17,548 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 06:02:17,551 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 06:02:17,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 06:02:10" (1/3) ... [2021-12-16 06:02:17,552 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dd3f3dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 06:02:17, skipping insertion in model container [2021-12-16 06:02:17,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:02:12" (2/3) ... [2021-12-16 06:02:17,553 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dd3f3dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 06:02:17, skipping insertion in model container [2021-12-16 06:02:17,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 06:02:17" (3/3) ... [2021-12-16 06:02:17,566 INFO L111 eAbstractionObserver]: Analyzing ICFG ddv_machzwd_inl_p.i [2021-12-16 06:02:17,572 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 06:02:17,572 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 205 error locations. [2021-12-16 06:02:17,620 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 06:02:17,627 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 [2021-12-16 06:02:17,627 INFO L340 AbstractCegarLoop]: Starting to check reachability of 205 error locations. [2021-12-16 06:02:17,659 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) [2021-12-16 06:02:17,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-16 06:02:17,666 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:02:17,666 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-16 06:02:17,667 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)] === [2021-12-16 06:02:17,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:02:17,672 INFO L85 PathProgramCache]: Analyzing trace with hash 333908101, now seen corresponding path program 1 times [2021-12-16 06:02:17,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 06:02:17,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [57170815] [2021-12-16 06:02:17,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:02:17,687 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 06:02:17,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 06:02:17,693 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) [2021-12-16 06:02:17,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-16 06:02:18,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:02:18,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-16 06:02:18,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 06:02:18,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:02:18,235 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 06:02:18,236 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 06:02:18,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [57170815] [2021-12-16 06:02:18,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [57170815] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:02:18,237 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:02:18,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 06:02:18,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927607774] [2021-12-16 06:02:18,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:02:18,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 06:02:18,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 06:02:18,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 06:02:18,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 06:02:18,294 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) [2021-12-16 06:02:20,344 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 06:02:22,355 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 06:02:24,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:02:24,974 INFO L93 Difference]: Finished difference Result 1204 states and 1443 transitions. [2021-12-16 06:02:24,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 06:02:24,981 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 [2021-12-16 06:02:24,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:02:25,008 INFO L225 Difference]: With dead ends: 1204 [2021-12-16 06:02:25,009 INFO L226 Difference]: Without dead ends: 1200 [2021-12-16 06:02:25,010 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 [2021-12-16 06:02:25,016 INFO L933 BasicCegarLoop]: 759 mSDtfsCounter, 687 mSDsluCounter, 1725 mSDsCounter, 0 mSdLazyCounter, 1106 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s 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, 6.5s IncrementalHoareTripleChecker+Time [2021-12-16 06:02:25,017 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [688 Valid, 2484 Invalid, 1112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1106 Invalid, 2 Unknown, 0 Unchecked, 6.5s Time] [2021-12-16 06:02:25,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1200 states. [2021-12-16 06:02:25,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1200 to 987. [2021-12-16 06:02:25,139 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) [2021-12-16 06:02:25,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 987 states to 987 states and 1347 transitions. [2021-12-16 06:02:25,150 INFO L78 Accepts]: Start accepts. Automaton has 987 states and 1347 transitions. Word has length 5 [2021-12-16 06:02:25,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:02:25,151 INFO L470 AbstractCegarLoop]: Abstraction has 987 states and 1347 transitions. [2021-12-16 06:02:25,152 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) [2021-12-16 06:02:25,152 INFO L276 IsEmpty]: Start isEmpty. Operand 987 states and 1347 transitions. [2021-12-16 06:02:25,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-16 06:02:25,152 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:02:25,152 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-16 06:02:25,176 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-16 06:02:25,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 06:02:25,376 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)] === [2021-12-16 06:02:25,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:02:25,377 INFO L85 PathProgramCache]: Analyzing trace with hash 333908102, now seen corresponding path program 1 times [2021-12-16 06:02:25,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 06:02:25,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1495000274] [2021-12-16 06:02:25,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:02:25,378 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 06:02:25,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 06:02:25,380 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) [2021-12-16 06:02:25,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-16 06:02:25,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:02:25,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-16 06:02:25,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 06:02:25,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:02:25,822 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 06:02:25,822 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 06:02:25,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1495000274] [2021-12-16 06:02:25,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1495000274] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:02:25,823 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:02:25,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 06:02:25,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527052302] [2021-12-16 06:02:25,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:02:25,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 06:02:25,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 06:02:25,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 06:02:25,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 06:02:25,825 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) [2021-12-16 06:02:27,849 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 06:02:29,861 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 06:02:32,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:02:32,415 INFO L93 Difference]: Finished difference Result 1119 states and 1439 transitions. [2021-12-16 06:02:32,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 06:02:32,416 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 [2021-12-16 06:02:32,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:02:32,422 INFO L225 Difference]: With dead ends: 1119 [2021-12-16 06:02:32,423 INFO L226 Difference]: Without dead ends: 1119 [2021-12-16 06:02:32,423 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 [2021-12-16 06:02:32,424 INFO L933 BasicCegarLoop]: 840 mSDtfsCounter, 268 mSDsluCounter, 1790 mSDsCounter, 0 mSdLazyCounter, 850 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s 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, 6.5s IncrementalHoareTripleChecker+Time [2021-12-16 06:02:32,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [269 Valid, 2630 Invalid, 853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 850 Invalid, 2 Unknown, 0 Unchecked, 6.5s Time] [2021-12-16 06:02:32,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1119 states. [2021-12-16 06:02:32,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1119 to 1060. [2021-12-16 06:02:32,453 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) [2021-12-16 06:02:32,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1060 states to 1060 states and 1435 transitions. [2021-12-16 06:02:32,459 INFO L78 Accepts]: Start accepts. Automaton has 1060 states and 1435 transitions. Word has length 5 [2021-12-16 06:02:32,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:02:32,459 INFO L470 AbstractCegarLoop]: Abstraction has 1060 states and 1435 transitions. [2021-12-16 06:02:32,460 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) [2021-12-16 06:02:32,460 INFO L276 IsEmpty]: Start isEmpty. Operand 1060 states and 1435 transitions. [2021-12-16 06:02:32,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-16 06:02:32,460 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:02:32,461 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:02:32,478 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-12-16 06:02:32,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 06:02:32,674 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)] === [2021-12-16 06:02:32,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:02:32,675 INFO L85 PathProgramCache]: Analyzing trace with hash -863937403, now seen corresponding path program 1 times [2021-12-16 06:02:32,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 06:02:32,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [495403167] [2021-12-16 06:02:32,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:02:32,676 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 06:02:32,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 06:02:32,677 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) [2021-12-16 06:02:32,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-16 06:02:32,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:02:33,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 06:02:33,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 06:02:33,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:02:33,078 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 06:02:33,078 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 06:02:33,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [495403167] [2021-12-16 06:02:33,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [495403167] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:02:33,078 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:02:33,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-12-16 06:02:33,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240538476] [2021-12-16 06:02:33,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:02:33,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 06:02:33,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 06:02:33,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 06:02:33,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 06:02:33,080 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) [2021-12-16 06:02:34,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:02:34,270 INFO L93 Difference]: Finished difference Result 1266 states and 1522 transitions. [2021-12-16 06:02:34,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 06:02:34,271 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 [2021-12-16 06:02:34,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:02:34,277 INFO L225 Difference]: With dead ends: 1266 [2021-12-16 06:02:34,277 INFO L226 Difference]: Without dead ends: 1266 [2021-12-16 06:02:34,277 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 [2021-12-16 06:02:34,278 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, 1.2s IncrementalHoareTripleChecker+Time [2021-12-16 06:02:34,278 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [660 Valid, 1290 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-16 06:02:34,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1266 states. [2021-12-16 06:02:34,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1266 to 1059. [2021-12-16 06:02:34,311 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) [2021-12-16 06:02:34,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1059 states to 1059 states and 1430 transitions. [2021-12-16 06:02:34,323 INFO L78 Accepts]: Start accepts. Automaton has 1059 states and 1430 transitions. Word has length 11 [2021-12-16 06:02:34,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:02:34,324 INFO L470 AbstractCegarLoop]: Abstraction has 1059 states and 1430 transitions. [2021-12-16 06:02:34,324 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) [2021-12-16 06:02:34,324 INFO L276 IsEmpty]: Start isEmpty. Operand 1059 states and 1430 transitions. [2021-12-16 06:02:34,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-16 06:02:34,325 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:02:34,325 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:02:34,341 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-12-16 06:02:34,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 06:02:34,538 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)] === [2021-12-16 06:02:34,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:02:34,539 INFO L85 PathProgramCache]: Analyzing trace with hash -863937402, now seen corresponding path program 1 times [2021-12-16 06:02:34,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 06:02:34,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2021737335] [2021-12-16 06:02:34,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:02:34,540 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 06:02:34,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 06:02:34,542 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) [2021-12-16 06:02:34,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-16 06:02:34,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:02:34,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-16 06:02:34,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 06:02:35,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:02:35,024 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 06:02:35,025 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 06:02:35,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2021737335] [2021-12-16 06:02:35,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2021737335] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:02:35,025 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:02:35,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 06:02:35,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160302807] [2021-12-16 06:02:35,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:02:35,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 06:02:35,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 06:02:35,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 06:02:35,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-16 06:02:35,027 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) [2021-12-16 06:02:37,049 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 [] [2021-12-16 06:02:38,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:02:38,751 INFO L93 Difference]: Finished difference Result 1125 states and 1445 transitions. [2021-12-16 06:02:38,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 06:02:38,752 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 [2021-12-16 06:02:38,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:02:38,756 INFO L225 Difference]: With dead ends: 1125 [2021-12-16 06:02:38,757 INFO L226 Difference]: Without dead ends: 1125 [2021-12-16 06:02:38,757 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 [2021-12-16 06:02:38,758 INFO L933 BasicCegarLoop]: 837 mSDtfsCounter, 268 mSDsluCounter, 677 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s 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, 3.7s IncrementalHoareTripleChecker+Time [2021-12-16 06:02:38,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [268 Valid, 1514 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 410 Invalid, 1 Unknown, 0 Unchecked, 3.7s Time] [2021-12-16 06:02:38,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1125 states. [2021-12-16 06:02:38,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1125 to 1062. [2021-12-16 06:02:38,785 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) [2021-12-16 06:02:38,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1062 states to 1062 states and 1433 transitions. [2021-12-16 06:02:38,790 INFO L78 Accepts]: Start accepts. Automaton has 1062 states and 1433 transitions. Word has length 11 [2021-12-16 06:02:38,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:02:38,791 INFO L470 AbstractCegarLoop]: Abstraction has 1062 states and 1433 transitions. [2021-12-16 06:02:38,791 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) [2021-12-16 06:02:38,791 INFO L276 IsEmpty]: Start isEmpty. Operand 1062 states and 1433 transitions. [2021-12-16 06:02:38,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-16 06:02:38,791 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:02:38,792 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:02:38,807 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-12-16 06:02:38,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 06:02:38,999 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)] === [2021-12-16 06:02:39,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:02:39,000 INFO L85 PathProgramCache]: Analyzing trace with hash -2114831441, now seen corresponding path program 1 times [2021-12-16 06:02:39,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 06:02:39,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1764620925] [2021-12-16 06:02:39,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:02:39,001 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 06:02:39,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 06:02:39,002 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) [2021-12-16 06:02:39,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-16 06:02:39,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:02:39,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-16 06:02:39,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 06:02:39,530 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:02:39,531 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 06:02:39,840 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:02:39,840 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 06:02:39,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1764620925] [2021-12-16 06:02:39,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1764620925] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 06:02:39,840 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-16 06:02:39,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4] total 7 [2021-12-16 06:02:39,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801777736] [2021-12-16 06:02:39,841 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-16 06:02:39,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 06:02:39,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 06:02:39,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 06:02:39,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-16 06:02:39,842 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) [2021-12-16 06:02:41,866 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 [] [2021-12-16 06:02:43,871 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 06:02:45,881 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 06:02:52,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:02:52,267 INFO L93 Difference]: Finished difference Result 1335 states and 1679 transitions. [2021-12-16 06:02:52,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 06:02:52,269 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 [2021-12-16 06:02:52,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:02:52,276 INFO L225 Difference]: With dead ends: 1335 [2021-12-16 06:02:52,276 INFO L226 Difference]: Without dead ends: 1335 [2021-12-16 06:02:52,276 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 [2021-12-16 06:02:52,277 INFO L933 BasicCegarLoop]: 838 mSDtfsCounter, 863 mSDsluCounter, 2512 mSDsCounter, 0 mSdLazyCounter, 1547 mSolverCounterSat, 125 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.4s 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, 12.1s IncrementalHoareTripleChecker+Time [2021-12-16 06:02:52,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [875 Valid, 3350 Invalid, 1675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 1547 Invalid, 3 Unknown, 0 Unchecked, 12.1s Time] [2021-12-16 06:02:52,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1335 states. [2021-12-16 06:02:52,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1335 to 1209. [2021-12-16 06:02:52,304 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) [2021-12-16 06:02:52,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1209 states to 1209 states and 1659 transitions. [2021-12-16 06:02:52,309 INFO L78 Accepts]: Start accepts. Automaton has 1209 states and 1659 transitions. Word has length 14 [2021-12-16 06:02:52,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:02:52,309 INFO L470 AbstractCegarLoop]: Abstraction has 1209 states and 1659 transitions. [2021-12-16 06:02:52,310 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) [2021-12-16 06:02:52,310 INFO L276 IsEmpty]: Start isEmpty. Operand 1209 states and 1659 transitions. [2021-12-16 06:02:52,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-16 06:02:52,311 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:02:52,311 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:02:52,330 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-12-16 06:02:52,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 06:02:52,531 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)] === [2021-12-16 06:02:52,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:02:52,532 INFO L85 PathProgramCache]: Analyzing trace with hash -846555216, now seen corresponding path program 1 times [2021-12-16 06:02:52,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 06:02:52,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1908122525] [2021-12-16 06:02:52,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:02:52,533 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 06:02:52,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 06:02:52,534 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) [2021-12-16 06:02:52,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-12-16 06:02:52,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:02:52,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 560 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-16 06:02:52,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 06:02:52,974 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:02:52,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 06:02:53,046 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:02:53,047 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 06:02:53,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1908122525] [2021-12-16 06:02:53,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1908122525] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 06:02:53,047 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-16 06:02:53,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-12-16 06:02:53,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198863991] [2021-12-16 06:02:53,048 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-16 06:02:53,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 06:02:53,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 06:02:53,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 06:02:53,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-16 06:02:53,049 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) [2021-12-16 06:02:53,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:02:53,392 INFO L93 Difference]: Finished difference Result 1215 states and 1663 transitions. [2021-12-16 06:02:53,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-16 06:02:53,394 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 [2021-12-16 06:02:53,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:02:53,398 INFO L225 Difference]: With dead ends: 1215 [2021-12-16 06:02:53,399 INFO L226 Difference]: Without dead ends: 1215 [2021-12-16 06:02:53,400 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 [2021-12-16 06:02:53,402 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, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 06:02:53,405 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [474 Valid, 3595 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 06:02:53,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1215 states. [2021-12-16 06:02:53,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1215 to 1214. [2021-12-16 06:02:53,434 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) [2021-12-16 06:02:53,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1214 states to 1214 states and 1663 transitions. [2021-12-16 06:02:53,439 INFO L78 Accepts]: Start accepts. Automaton has 1214 states and 1663 transitions. Word has length 19 [2021-12-16 06:02:53,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:02:53,443 INFO L470 AbstractCegarLoop]: Abstraction has 1214 states and 1663 transitions. [2021-12-16 06:02:53,443 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) [2021-12-16 06:02:53,443 INFO L276 IsEmpty]: Start isEmpty. Operand 1214 states and 1663 transitions. [2021-12-16 06:02:53,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-16 06:02:53,444 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:02:53,444 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:02:53,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-12-16 06:02:53,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 06:02:53,661 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)] === [2021-12-16 06:02:53,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:02:53,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1706941254, now seen corresponding path program 2 times [2021-12-16 06:02:53,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 06:02:53,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2032198869] [2021-12-16 06:02:53,662 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-16 06:02:53,662 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 06:02:53,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 06:02:53,663 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) [2021-12-16 06:02:53,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-12-16 06:02:54,193 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-16 06:02:54,194 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 06:02:54,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 588 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-16 06:02:54,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 06:02:54,607 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:02:54,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 06:02:55,627 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:02:55,627 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 06:02:55,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2032198869] [2021-12-16 06:02:55,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2032198869] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 06:02:55,627 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-16 06:02:55,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 14 [2021-12-16 06:02:55,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877368535] [2021-12-16 06:02:55,628 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-16 06:02:55,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-16 06:02:55,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 06:02:55,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-16 06:02:55,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2021-12-16 06:02:55,629 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) [2021-12-16 06:02:57,655 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 06:02:59,666 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 06:03:01,677 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 []