./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_pthread_mutex_unlock.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version ae007674 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_pthread_mutex_unlock.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4aba0d481dbad425b1cb3ce4949768f5bfa91a070fed6a0c2b192c70ad920fc2 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 06:00:21,888 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 06:00:21,890 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 06:00:21,928 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 06:00:21,928 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 06:00:21,931 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 06:00:21,932 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 06:00:21,935 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 06:00:21,937 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 06:00:21,940 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 06:00:21,941 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 06:00:21,944 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 06:00:21,944 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 06:00:21,946 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 06:00:21,947 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 06:00:21,949 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 06:00:21,950 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 06:00:21,950 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 06:00:21,952 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 06:00:21,956 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 06:00:21,957 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 06:00:21,958 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 06:00:21,958 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 06:00:21,960 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 06:00:21,964 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 06:00:21,964 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 06:00:21,965 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 06:00:21,966 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 06:00:21,966 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 06:00:21,967 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 06:00:21,967 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 06:00:21,968 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 06:00:21,969 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 06:00:21,969 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 06:00:21,970 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 06:00:21,971 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 06:00:21,971 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 06:00:21,972 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 06:00:21,972 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 06:00:21,973 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 06:00:21,973 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 06:00:21,976 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-28 06:00:22,001 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 06:00:22,001 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 06:00:22,002 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 06:00:22,002 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 06:00:22,003 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 06:00:22,003 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 06:00:22,004 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 06:00:22,004 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 06:00:22,004 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 06:00:22,005 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 06:00:22,005 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-28 06:00:22,006 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-28 06:00:22,006 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 06:00:22,006 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-28 06:00:22,006 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 06:00:22,006 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-28 06:00:22,006 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-28 06:00:22,006 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-28 06:00:22,007 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 06:00:22,007 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-28 06:00:22,007 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-28 06:00:22,007 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 06:00:22,007 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 06:00:22,007 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 06:00:22,008 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 06:00:22,008 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 06:00:22,008 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 06:00:22,008 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 06:00:22,008 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 06:00:22,008 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 06:00:22,008 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4aba0d481dbad425b1cb3ce4949768f5bfa91a070fed6a0c2b192c70ad920fc2 [2021-12-28 06:00:22,299 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 06:00:22,314 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 06:00:22,316 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 06:00:22,317 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 06:00:22,318 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 06:00:22,319 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_pthread_mutex_unlock.i [2021-12-28 06:00:22,366 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ba59032d/53dbf0390bbc47949fa1461e69330c9d/FLAG3a14244a6 [2021-12-28 06:00:22,824 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 06:00:22,824 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_pthread_mutex_unlock.i [2021-12-28 06:00:22,850 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ba59032d/53dbf0390bbc47949fa1461e69330c9d/FLAG3a14244a6 [2021-12-28 06:00:23,129 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ba59032d/53dbf0390bbc47949fa1461e69330c9d [2021-12-28 06:00:23,138 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 06:00:23,140 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 06:00:23,149 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 06:00:23,149 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 06:00:23,163 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 06:00:23,164 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 06:00:23" (1/1) ... [2021-12-28 06:00:23,165 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63a11513 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 06:00:23, skipping insertion in model container [2021-12-28 06:00:23,165 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 06:00:23" (1/1) ... [2021-12-28 06:00:23,170 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 06:00:23,293 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 06:00:23,490 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_pthread_mutex_unlock.i[472,485] [2021-12-28 06:00:24,351 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 06:00:24,379 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) [2021-12-28 06:00:24,380 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@77bf6ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 06:00:24, skipping insertion in model container [2021-12-28 06:00:24,380 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 06:00:24,381 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-12-28 06:00:24,383 INFO L158 Benchmark]: Toolchain (without parser) took 1241.73ms. Allocated memory was 62.9MB in the beginning and 83.9MB in the end (delta: 21.0MB). Free memory was 39.2MB in the beginning and 56.2MB in the end (delta: -17.0MB). Peak memory consumption was 21.8MB. Max. memory is 16.1GB. [2021-12-28 06:00:24,384 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 62.9MB. Free memory was 45.2MB in the beginning and 45.1MB in the end (delta: 48.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 06:00:24,384 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1231.68ms. Allocated memory was 62.9MB in the beginning and 83.9MB in the end (delta: 21.0MB). Free memory was 38.9MB in the beginning and 56.2MB in the end (delta: -17.3MB). Peak memory consumption was 21.8MB. Max. memory is 16.1GB. [2021-12-28 06:00:24,386 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 62.9MB. Free memory was 45.2MB in the beginning and 45.1MB in the end (delta: 48.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1231.68ms. Allocated memory was 62.9MB in the beginning and 83.9MB in the end (delta: 21.0MB). Free memory was 38.9MB in the beginning and 56.2MB in the end (delta: -17.3MB). Peak memory consumption was 21.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2977]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_pthread_mutex_unlock.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4aba0d481dbad425b1cb3ce4949768f5bfa91a070fed6a0c2b192c70ad920fc2 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 06:00:26,158 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 06:00:26,160 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 06:00:26,181 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 06:00:26,181 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 06:00:26,182 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 06:00:26,183 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 06:00:26,196 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 06:00:26,197 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 06:00:26,197 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 06:00:26,198 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 06:00:26,199 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 06:00:26,199 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 06:00:26,200 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 06:00:26,201 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 06:00:26,202 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 06:00:26,202 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 06:00:26,203 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 06:00:26,204 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 06:00:26,205 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 06:00:26,206 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 06:00:26,207 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 06:00:26,208 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 06:00:26,208 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 06:00:26,210 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 06:00:26,210 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 06:00:26,210 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 06:00:26,211 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 06:00:26,211 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 06:00:26,212 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 06:00:26,212 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 06:00:26,213 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 06:00:26,213 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 06:00:26,214 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 06:00:26,215 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 06:00:26,215 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 06:00:26,215 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 06:00:26,216 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 06:00:26,216 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 06:00:26,217 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 06:00:26,217 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 06:00:26,224 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-12-28 06:00:26,242 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 06:00:26,242 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 06:00:26,242 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 06:00:26,242 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 06:00:26,243 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 06:00:26,243 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 06:00:26,243 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 06:00:26,244 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 06:00:26,244 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 06:00:26,244 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 06:00:26,244 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-28 06:00:26,244 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-28 06:00:26,244 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 06:00:26,244 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-28 06:00:26,244 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 06:00:26,245 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-28 06:00:26,245 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-28 06:00:26,245 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-28 06:00:26,245 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 06:00:26,256 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-28 06:00:26,257 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-28 06:00:26,257 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-28 06:00:26,258 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-28 06:00:26,259 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 06:00:26,259 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 06:00:26,260 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 06:00:26,260 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 06:00:26,260 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 06:00:26,260 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 06:00:26,260 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 06:00:26,261 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-28 06:00:26,261 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-28 06:00:26,261 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-28 06:00:26,261 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4aba0d481dbad425b1cb3ce4949768f5bfa91a070fed6a0c2b192c70ad920fc2 [2021-12-28 06:00:26,528 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 06:00:26,544 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 06:00:26,545 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 06:00:26,546 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 06:00:26,547 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 06:00:26,547 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_pthread_mutex_unlock.i [2021-12-28 06:00:26,594 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ef444d9d/74d30df0f7114654b12b8d2094b5f9e7/FLAGeac86e716 [2021-12-28 06:00:27,072 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 06:00:27,073 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_pthread_mutex_unlock.i [2021-12-28 06:00:27,097 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ef444d9d/74d30df0f7114654b12b8d2094b5f9e7/FLAGeac86e716 [2021-12-28 06:00:27,331 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ef444d9d/74d30df0f7114654b12b8d2094b5f9e7 [2021-12-28 06:00:27,333 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 06:00:27,334 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 06:00:27,337 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 06:00:27,337 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 06:00:27,340 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 06:00:27,341 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 06:00:27" (1/1) ... [2021-12-28 06:00:27,341 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b20ba37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 06:00:27, skipping insertion in model container [2021-12-28 06:00:27,342 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 06:00:27" (1/1) ... [2021-12-28 06:00:27,346 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 06:00:27,424 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 06:00:27,558 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_pthread_mutex_unlock.i[472,485] [2021-12-28 06:00:28,289 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 06:00:28,328 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-28 06:00:28,347 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 06:00:28,350 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_pthread_mutex_unlock.i[472,485] [2021-12-28 06:00:28,486 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 06:00:28,516 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 06:00:28,524 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_pthread_mutex_unlock.i[472,485] [2021-12-28 06:00:28,648 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 06:00:28,772 INFO L208 MainTranslator]: Completed translation [2021-12-28 06:00:28,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 06:00:28 WrapperNode [2021-12-28 06:00:28,772 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 06:00:28,773 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 06:00:28,773 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 06:00:28,773 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 06:00:28,778 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 06:00:28" (1/1) ... [2021-12-28 06:00:28,841 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 06:00:28" (1/1) ... [2021-12-28 06:00:28,904 INFO L137 Inliner]: procedures = 482, calls = 840, calls flagged for inlining = 54, calls inlined = 37, statements flattened = 970 [2021-12-28 06:00:28,905 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 06:00:28,906 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 06:00:28,912 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 06:00:28,913 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 06:00:28,919 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 06:00:28" (1/1) ... [2021-12-28 06:00:28,919 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 06:00:28" (1/1) ... [2021-12-28 06:00:28,935 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 06:00:28" (1/1) ... [2021-12-28 06:00:28,935 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 06:00:28" (1/1) ... [2021-12-28 06:00:28,970 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 06:00:28" (1/1) ... [2021-12-28 06:00:28,987 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 06:00:28" (1/1) ... [2021-12-28 06:00:28,994 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 06:00:28" (1/1) ... [2021-12-28 06:00:29,007 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 06:00:29,012 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 06:00:29,013 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 06:00:29,013 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 06:00:29,014 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 06:00:28" (1/1) ... [2021-12-28 06:00:29,018 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 06:00:29,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 06:00:29,034 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) [2021-12-28 06:00:29,097 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 [2021-12-28 06:00:29,117 INFO L130 BoogieDeclarations]: Found specification of procedure zf_timer_off [2021-12-28 06:00:29,118 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_timer_off [2021-12-28 06:00:29,118 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~C_UINT~X~C_ULONG~TO~C_INT [2021-12-28 06:00:29,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~C_UINT~X~C_ULONG~TO~C_INT [2021-12-28 06:00:29,118 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-12-28 06:00:29,118 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_atomic_begin [2021-12-28 06:00:29,118 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-28 06:00:29,118 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-28 06:00:29,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-28 06:00:29,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-12-28 06:00:29,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-28 06:00:29,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-12-28 06:00:29,119 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-12-28 06:00:29,119 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-12-28 06:00:29,119 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-12-28 06:00:29,119 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_atomic_end [2021-12-28 06:00:29,119 INFO L130 BoogieDeclarations]: Found specification of procedure zf_get_control [2021-12-28 06:00:29,120 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_get_control [2021-12-28 06:00:29,120 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2021-12-28 06:00:29,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2021-12-28 06:00:29,120 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-28 06:00:29,120 INFO L130 BoogieDeclarations]: Found specification of procedure request_region [2021-12-28 06:00:29,121 INFO L138 BoogieDeclarations]: Found implementation of procedure request_region [2021-12-28 06:00:29,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 06:00:29,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-28 06:00:29,121 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-28 06:00:29,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-28 06:00:29,121 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irqsave [2021-12-28 06:00:29,121 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irqsave [2021-12-28 06:00:29,121 INFO L130 BoogieDeclarations]: Found specification of procedure release_region [2021-12-28 06:00:29,122 INFO L138 BoogieDeclarations]: Found implementation of procedure release_region [2021-12-28 06:00:29,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 06:00:29,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 06:00:29,122 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_init [2021-12-28 06:00:29,122 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_init [2021-12-28 06:00:29,122 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-12-28 06:00:29,122 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-28 06:00:29,123 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-12-28 06:00:29,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-28 06:00:29,123 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-28 06:00:29,123 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-28 06:00:29,123 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2021-12-28 06:00:29,123 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2021-12-28 06:00:29,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-28 06:00:29,124 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-28 06:00:29,124 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2021-12-28 06:00:29,124 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2021-12-28 06:00:29,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-12-28 06:00:29,124 INFO L130 BoogieDeclarations]: Found specification of procedure cdev_add [2021-12-28 06:00:29,124 INFO L138 BoogieDeclarations]: Found implementation of procedure cdev_add [2021-12-28 06:00:29,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-12-28 06:00:29,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-12-28 06:00:29,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-28 06:00:29,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-28 06:00:29,126 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2021-12-28 06:00:29,126 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2021-12-28 06:00:29,127 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2021-12-28 06:00:29,127 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2021-12-28 06:00:29,127 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2021-12-28 06:00:29,127 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2021-12-28 06:00:29,127 INFO L130 BoogieDeclarations]: Found specification of procedure misc_deregister [2021-12-28 06:00:29,127 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_deregister [2021-12-28 06:00:29,128 INFO L130 BoogieDeclarations]: Found specification of procedure assert_context_process [2021-12-28 06:00:29,128 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_context_process [2021-12-28 06:00:29,128 INFO L130 BoogieDeclarations]: Found specification of procedure zf_set_control [2021-12-28 06:00:29,128 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_set_control [2021-12-28 06:00:29,128 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~C_ULONG~X~$Pointer$~TO~C_LONG [2021-12-28 06:00:29,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~C_ULONG~X~$Pointer$~TO~C_LONG [2021-12-28 06:00:29,128 INFO L130 BoogieDeclarations]: Found specification of procedure zf_readw [2021-12-28 06:00:29,128 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_readw [2021-12-28 06:00:29,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-12-28 06:00:29,129 INFO L130 BoogieDeclarations]: Found specification of procedure zf_ping [2021-12-28 06:00:29,129 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_ping [2021-12-28 06:00:29,129 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-12-28 06:00:29,129 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-12-28 06:00:29,129 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~C_ULONG~TO~VOID [2021-12-28 06:00:29,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~C_ULONG~TO~VOID [2021-12-28 06:00:29,442 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 06:00:29,444 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 06:00:33,556 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 06:00:33,574 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 06:00:33,575 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-12-28 06:00:33,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 06:00:33 BoogieIcfgContainer [2021-12-28 06:00:33,580 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 06:00:33,581 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 06:00:33,582 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 06:00:33,583 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 06:00:33,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 06:00:27" (1/3) ... [2021-12-28 06:00:33,584 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aebd6db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 06:00:33, skipping insertion in model container [2021-12-28 06:00:33,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 06:00:28" (2/3) ... [2021-12-28 06:00:33,585 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aebd6db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 06:00:33, skipping insertion in model container [2021-12-28 06:00:33,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 06:00:33" (3/3) ... [2021-12-28 06:00:33,587 INFO L111 eAbstractionObserver]: Analyzing ICFG ddv_machzwd_pthread_mutex_unlock.i [2021-12-28 06:00:33,596 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 06:00:33,596 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 205 error locations. [2021-12-28 06:00:33,631 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 06:00:33,637 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 [2021-12-28 06:00:33,637 INFO L340 AbstractCegarLoop]: Starting to check reachability of 205 error locations. [2021-12-28 06:00:33,663 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) [2021-12-28 06:00:33,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-28 06:00:33,667 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 06:00:33,668 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-28 06:00:33,668 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)] === [2021-12-28 06:00:33,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 06:00:33,672 INFO L85 PathProgramCache]: Analyzing trace with hash 333908101, now seen corresponding path program 1 times [2021-12-28 06:00:33,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-28 06:00:33,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1458774987] [2021-12-28 06:00:33,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 06:00:33,683 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-28 06:00:33,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-28 06:00:33,685 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) [2021-12-28 06:00:33,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-28 06:00:34,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 06:00:34,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-28 06:00:34,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 06:00:34,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 06:00:34,180 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 06:00:34,180 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-28 06:00:34,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1458774987] [2021-12-28 06:00:34,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1458774987] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 06:00:34,181 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 06:00:34,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 06:00:34,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795670419] [2021-12-28 06:00:34,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 06:00:34,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 06:00:34,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-28 06:00:34,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 06:00:34,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 06:00:34,211 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) [2021-12-28 06:00:36,244 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 06:00:38,255 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 06:00:41,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 06:00:41,294 INFO L93 Difference]: Finished difference Result 1204 states and 1443 transitions. [2021-12-28 06:00:41,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 06:00:41,296 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 [2021-12-28 06:00:41,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 06:00:41,314 INFO L225 Difference]: With dead ends: 1204 [2021-12-28 06:00:41,314 INFO L226 Difference]: Without dead ends: 1200 [2021-12-28 06:00:41,318 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 [2021-12-28 06:00:41,322 INFO L933 BasicCegarLoop]: 759 mSDtfsCounter, 687 mSDsluCounter, 1725 mSDsCounter, 0 mSdLazyCounter, 1106 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s 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, 6.9s IncrementalHoareTripleChecker+Time [2021-12-28 06:00:41,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [688 Valid, 2484 Invalid, 1112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1106 Invalid, 2 Unknown, 0 Unchecked, 6.9s Time] [2021-12-28 06:00:41,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1200 states. [2021-12-28 06:00:41,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1200 to 987. [2021-12-28 06:00:41,419 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) [2021-12-28 06:00:41,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 987 states to 987 states and 1347 transitions. [2021-12-28 06:00:41,427 INFO L78 Accepts]: Start accepts. Automaton has 987 states and 1347 transitions. Word has length 5 [2021-12-28 06:00:41,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 06:00:41,428 INFO L470 AbstractCegarLoop]: Abstraction has 987 states and 1347 transitions. [2021-12-28 06:00:41,428 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) [2021-12-28 06:00:41,428 INFO L276 IsEmpty]: Start isEmpty. Operand 987 states and 1347 transitions. [2021-12-28 06:00:41,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-28 06:00:41,429 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 06:00:41,429 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-28 06:00:41,456 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-12-28 06:00:41,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-28 06:00:41,642 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)] === [2021-12-28 06:00:41,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 06:00:41,643 INFO L85 PathProgramCache]: Analyzing trace with hash 333908102, now seen corresponding path program 1 times [2021-12-28 06:00:41,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-28 06:00:41,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1049508543] [2021-12-28 06:00:41,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 06:00:41,645 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-28 06:00:41,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-28 06:00:41,646 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) [2021-12-28 06:00:41,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-28 06:00:41,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 06:00:41,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-28 06:00:41,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 06:00:42,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 06:00:42,022 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 06:00:42,022 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-28 06:00:42,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1049508543] [2021-12-28 06:00:42,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1049508543] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 06:00:42,023 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 06:00:42,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 06:00:42,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582457877] [2021-12-28 06:00:42,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 06:00:42,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 06:00:42,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-28 06:00:42,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 06:00:42,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 06:00:42,026 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) [2021-12-28 06:00:44,044 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 06:00:46,053 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 06:00:47,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 06:00:47,948 INFO L93 Difference]: Finished difference Result 1119 states and 1439 transitions. [2021-12-28 06:00:47,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 06:00:47,950 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 [2021-12-28 06:00:47,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 06:00:47,954 INFO L225 Difference]: With dead ends: 1119 [2021-12-28 06:00:47,954 INFO L226 Difference]: Without dead ends: 1119 [2021-12-28 06:00:47,955 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 [2021-12-28 06:00:47,955 INFO L933 BasicCegarLoop]: 840 mSDtfsCounter, 268 mSDsluCounter, 1790 mSDsCounter, 0 mSdLazyCounter, 850 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s 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, 5.8s IncrementalHoareTripleChecker+Time [2021-12-28 06:00:47,956 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [269 Valid, 2630 Invalid, 853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 850 Invalid, 2 Unknown, 0 Unchecked, 5.8s Time] [2021-12-28 06:00:47,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1119 states. [2021-12-28 06:00:47,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1119 to 1060. [2021-12-28 06:00:47,985 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) [2021-12-28 06:00:47,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1060 states to 1060 states and 1435 transitions. [2021-12-28 06:00:47,989 INFO L78 Accepts]: Start accepts. Automaton has 1060 states and 1435 transitions. Word has length 5 [2021-12-28 06:00:47,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 06:00:47,990 INFO L470 AbstractCegarLoop]: Abstraction has 1060 states and 1435 transitions. [2021-12-28 06:00:47,990 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) [2021-12-28 06:00:47,991 INFO L276 IsEmpty]: Start isEmpty. Operand 1060 states and 1435 transitions. [2021-12-28 06:00:47,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-28 06:00:47,991 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 06:00:47,991 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 06:00:48,017 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-12-28 06:00:48,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-28 06:00:48,202 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)] === [2021-12-28 06:00:48,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 06:00:48,203 INFO L85 PathProgramCache]: Analyzing trace with hash -863937403, now seen corresponding path program 1 times [2021-12-28 06:00:48,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-28 06:00:48,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [993124629] [2021-12-28 06:00:48,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 06:00:48,204 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-28 06:00:48,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-28 06:00:48,206 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) [2021-12-28 06:00:48,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-28 06:00:48,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 06:00:48,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-28 06:00:48,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 06:00:48,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 06:00:48,597 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 06:00:48,597 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-28 06:00:48,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [993124629] [2021-12-28 06:00:48,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [993124629] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 06:00:48,598 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 06:00:48,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-12-28 06:00:48,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178190939] [2021-12-28 06:00:48,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 06:00:48,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 06:00:48,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-28 06:00:48,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 06:00:48,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 06:00:48,603 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) [2021-12-28 06:00:49,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 06:00:49,569 INFO L93 Difference]: Finished difference Result 1266 states and 1522 transitions. [2021-12-28 06:00:49,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 06:00:49,570 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 [2021-12-28 06:00:49,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 06:00:49,573 INFO L225 Difference]: With dead ends: 1266 [2021-12-28 06:00:49,574 INFO L226 Difference]: Without dead ends: 1266 [2021-12-28 06:00:49,574 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 [2021-12-28 06:00:49,574 INFO L933 BasicCegarLoop]: 742 mSDtfsCounter, 660 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s 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, 0.9s IncrementalHoareTripleChecker+Time [2021-12-28 06:00:49,575 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [660 Valid, 1290 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-28 06:00:49,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1266 states. [2021-12-28 06:00:49,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1266 to 1059. [2021-12-28 06:00:49,622 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) [2021-12-28 06:00:49,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1059 states to 1059 states and 1430 transitions. [2021-12-28 06:00:49,628 INFO L78 Accepts]: Start accepts. Automaton has 1059 states and 1430 transitions. Word has length 11 [2021-12-28 06:00:49,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 06:00:49,632 INFO L470 AbstractCegarLoop]: Abstraction has 1059 states and 1430 transitions. [2021-12-28 06:00:49,632 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) [2021-12-28 06:00:49,632 INFO L276 IsEmpty]: Start isEmpty. Operand 1059 states and 1430 transitions. [2021-12-28 06:00:49,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-28 06:00:49,633 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 06:00:49,633 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 06:00:49,658 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-12-28 06:00:49,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-28 06:00:49,844 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)] === [2021-12-28 06:00:49,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 06:00:49,845 INFO L85 PathProgramCache]: Analyzing trace with hash -863937402, now seen corresponding path program 1 times [2021-12-28 06:00:49,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-28 06:00:49,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1477896265] [2021-12-28 06:00:49,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 06:00:49,846 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-28 06:00:49,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-28 06:00:49,872 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) [2021-12-28 06:00:49,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-28 06:00:50,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 06:00:50,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-28 06:00:50,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 06:00:50,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 06:00:50,302 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 06:00:50,302 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-28 06:00:50,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1477896265] [2021-12-28 06:00:50,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1477896265] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 06:00:50,303 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 06:00:50,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-28 06:00:50,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542356733] [2021-12-28 06:00:50,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 06:00:50,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 06:00:50,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-28 06:00:50,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 06:00:50,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-28 06:00:50,305 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) [2021-12-28 06:00:52,327 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 [] [2021-12-28 06:00:53,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 06:00:53,725 INFO L93 Difference]: Finished difference Result 1125 states and 1445 transitions. [2021-12-28 06:00:53,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 06:00:53,726 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 [2021-12-28 06:00:53,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 06:00:53,729 INFO L225 Difference]: With dead ends: 1125 [2021-12-28 06:00:53,729 INFO L226 Difference]: Without dead ends: 1125 [2021-12-28 06:00:53,729 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 [2021-12-28 06:00:53,730 INFO L933 BasicCegarLoop]: 837 mSDtfsCounter, 268 mSDsluCounter, 677 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 1514 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-12-28 06:00:53,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [268 Valid, 1514 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 410 Invalid, 1 Unknown, 0 Unchecked, 3.4s Time] [2021-12-28 06:00:53,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1125 states. [2021-12-28 06:00:53,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1125 to 1062. [2021-12-28 06:00:53,750 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) [2021-12-28 06:00:53,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1062 states to 1062 states and 1433 transitions. [2021-12-28 06:00:53,753 INFO L78 Accepts]: Start accepts. Automaton has 1062 states and 1433 transitions. Word has length 11 [2021-12-28 06:00:53,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 06:00:53,753 INFO L470 AbstractCegarLoop]: Abstraction has 1062 states and 1433 transitions. [2021-12-28 06:00:53,754 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) [2021-12-28 06:00:53,754 INFO L276 IsEmpty]: Start isEmpty. Operand 1062 states and 1433 transitions. [2021-12-28 06:00:53,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-28 06:00:53,754 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 06:00:53,754 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 06:00:53,777 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-12-28 06:00:53,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-28 06:00:53,965 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)] === [2021-12-28 06:00:53,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 06:00:53,966 INFO L85 PathProgramCache]: Analyzing trace with hash -2114831441, now seen corresponding path program 1 times [2021-12-28 06:00:53,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-28 06:00:53,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1050498167] [2021-12-28 06:00:53,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 06:00:53,967 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-28 06:00:53,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-28 06:00:53,968 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) [2021-12-28 06:00:53,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-28 06:00:54,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 06:00:54,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-28 06:00:54,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 06:00:54,523 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 06:00:54,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 06:00:54,798 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 06:00:54,798 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-28 06:00:54,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1050498167] [2021-12-28 06:00:54,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1050498167] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 06:00:54,799 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-28 06:00:54,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4] total 7 [2021-12-28 06:00:54,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568931280] [2021-12-28 06:00:54,799 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-28 06:00:54,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-28 06:00:54,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-28 06:00:54,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-28 06:00:54,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-28 06:00:54,800 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) [2021-12-28 06:00:56,821 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 [] [2021-12-28 06:00:58,832 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 06:01:00,841 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 06:01:07,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 06:01:07,034 INFO L93 Difference]: Finished difference Result 1335 states and 1679 transitions. [2021-12-28 06:01:07,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 06:01:07,035 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 [2021-12-28 06:01:07,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 06:01:07,040 INFO L225 Difference]: With dead ends: 1335 [2021-12-28 06:01:07,040 INFO L226 Difference]: Without dead ends: 1335 [2021-12-28 06:01:07,041 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 [2021-12-28 06:01:07,043 INFO L933 BasicCegarLoop]: 838 mSDtfsCounter, 863 mSDsluCounter, 2512 mSDsCounter, 0 mSdLazyCounter, 1547 mSolverCounterSat, 125 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 875 SdHoareTripleChecker+Valid, 3350 SdHoareTripleChecker+Invalid, 1675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 1547 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time [2021-12-28 06:01:07,044 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [875 Valid, 3350 Invalid, 1675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 1547 Invalid, 3 Unknown, 0 Unchecked, 11.9s Time] [2021-12-28 06:01:07,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1335 states. [2021-12-28 06:01:07,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1335 to 1209. [2021-12-28 06:01:07,068 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) [2021-12-28 06:01:07,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1209 states to 1209 states and 1659 transitions. [2021-12-28 06:01:07,072 INFO L78 Accepts]: Start accepts. Automaton has 1209 states and 1659 transitions. Word has length 14 [2021-12-28 06:01:07,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 06:01:07,073 INFO L470 AbstractCegarLoop]: Abstraction has 1209 states and 1659 transitions. [2021-12-28 06:01:07,073 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) [2021-12-28 06:01:07,073 INFO L276 IsEmpty]: Start isEmpty. Operand 1209 states and 1659 transitions. [2021-12-28 06:01:07,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-28 06:01:07,074 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 06:01:07,074 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 06:01:07,091 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-12-28 06:01:07,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-28 06:01:07,289 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)] === [2021-12-28 06:01:07,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 06:01:07,289 INFO L85 PathProgramCache]: Analyzing trace with hash -846555216, now seen corresponding path program 1 times [2021-12-28 06:01:07,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-28 06:01:07,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1677365356] [2021-12-28 06:01:07,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 06:01:07,290 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-28 06:01:07,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-28 06:01:07,296 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) [2021-12-28 06:01:07,298 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-12-28 06:01:07,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 06:01:07,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 560 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-28 06:01:07,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 06:01:07,911 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 06:01:07,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 06:01:08,046 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 06:01:08,047 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-28 06:01:08,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1677365356] [2021-12-28 06:01:08,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1677365356] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 06:01:08,047 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-28 06:01:08,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-12-28 06:01:08,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339935396] [2021-12-28 06:01:08,047 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-28 06:01:08,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-28 06:01:08,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-28 06:01:08,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-28 06:01:08,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-28 06:01:08,048 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) [2021-12-28 06:01:08,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 06:01:08,535 INFO L93 Difference]: Finished difference Result 1215 states and 1663 transitions. [2021-12-28 06:01:08,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-28 06:01:08,536 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 [2021-12-28 06:01:08,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 06:01:08,541 INFO L225 Difference]: With dead ends: 1215 [2021-12-28 06:01:08,541 INFO L226 Difference]: Without dead ends: 1215 [2021-12-28 06:01:08,541 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 [2021-12-28 06:01:08,542 INFO L933 BasicCegarLoop]: 785 mSDtfsCounter, 442 mSDsluCounter, 2810 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.4s IncrementalHoareTripleChecker+Time [2021-12-28 06:01:08,542 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [474 Valid, 3595 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-28 06:01:08,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1215 states. [2021-12-28 06:01:08,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1215 to 1214. [2021-12-28 06:01:08,583 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) [2021-12-28 06:01:08,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1214 states to 1214 states and 1663 transitions. [2021-12-28 06:01:08,596 INFO L78 Accepts]: Start accepts. Automaton has 1214 states and 1663 transitions. Word has length 19 [2021-12-28 06:01:08,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 06:01:08,597 INFO L470 AbstractCegarLoop]: Abstraction has 1214 states and 1663 transitions. [2021-12-28 06:01:08,597 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) [2021-12-28 06:01:08,597 INFO L276 IsEmpty]: Start isEmpty. Operand 1214 states and 1663 transitions. [2021-12-28 06:01:08,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-28 06:01:08,598 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 06:01:08,598 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 06:01:08,626 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-12-28 06:01:08,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-28 06:01:08,813 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)] === [2021-12-28 06:01:08,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 06:01:08,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1706941254, now seen corresponding path program 2 times [2021-12-28 06:01:08,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-28 06:01:08,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1519359984] [2021-12-28 06:01:08,814 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-28 06:01:08,814 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-28 06:01:08,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-28 06:01:08,816 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) [2021-12-28 06:01:08,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-12-28 06:01:09,461 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-28 06:01:09,462 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 06:01:09,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 588 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-28 06:01:09,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 06:01:09,988 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 06:01:09,989 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 06:01:11,359 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 06:01:11,359 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-28 06:01:11,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1519359984] [2021-12-28 06:01:11,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1519359984] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 06:01:11,359 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-28 06:01:11,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 14 [2021-12-28 06:01:11,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303377202] [2021-12-28 06:01:11,359 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-28 06:01:11,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-28 06:01:11,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-28 06:01:11,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-28 06:01:11,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2021-12-28 06:01:11,360 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) [2021-12-28 06:01:13,379 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 06:01:15,387 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 06:01:17,400 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 [] [2021-12-28 06:01:31,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 06:01:31,775 INFO L93 Difference]: Finished difference Result 1341 states and 1697 transitions. [2021-12-28 06:01:31,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-28 06:01:31,776 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.0) internal successors, (42), 15 states have internal predecessors, (42), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 23 [2021-12-28 06:01:31,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 06:01:31,780 INFO L225 Difference]: With dead ends: 1341 [2021-12-28 06:01:31,780 INFO L226 Difference]: Without dead ends: 1341 [2021-12-28 06:01:31,780 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=243, Invalid=407, Unknown=0, NotChecked=0, Total=650 [2021-12-28 06:01:31,781 INFO L933 BasicCegarLoop]: 826 mSDtfsCounter, 1112 mSDsluCounter, 4369 mSDsCounter, 0 mSdLazyCounter, 2557 mSolverCounterSat, 202 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1124 SdHoareTripleChecker+Valid, 5195 SdHoareTripleChecker+Invalid, 2762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 2557 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.7s IncrementalHoareTripleChecker+Time [2021-12-28 06:01:31,781 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1124 Valid, 5195 Invalid, 2762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 2557 Invalid, 3 Unknown, 0 Unchecked, 18.7s Time] [2021-12-28 06:01:31,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states. [2021-12-28 06:01:31,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 1227. [2021-12-28 06:01:31,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1227 states, 760 states have (on average 1.725) internal successors, (1311), 982 states have internal predecessors, (1311), 184 states have call successors, (184), 79 states have call predecessors, (184), 79 states have return successors, (184), 176 states have call predecessors, (184), 184 states have call successors, (184) [2021-12-28 06:01:31,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1227 states to 1227 states and 1679 transitions. [2021-12-28 06:01:31,844 INFO L78 Accepts]: Start accepts. Automaton has 1227 states and 1679 transitions. Word has length 23 [2021-12-28 06:01:31,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 06:01:31,844 INFO L470 AbstractCegarLoop]: Abstraction has 1227 states and 1679 transitions. [2021-12-28 06:01:31,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.0) internal successors, (42), 15 states have internal predecessors, (42), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-28 06:01:31,845 INFO L276 IsEmpty]: Start isEmpty. Operand 1227 states and 1679 transitions. [2021-12-28 06:01:31,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-28 06:01:31,846 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 06:01:31,846 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 06:01:31,877 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-12-28 06:01:32,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-28 06:01:32,062 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [spin_lock_initErr0REQUIRES_VIOLATION, spin_lock_initErr1REQUIRES_VIOLATION, spin_lock_initErr2REQUIRES_VIOLATION, spin_lock_initErr3REQUIRES_VIOLATION (and 201 more)] === [2021-12-28 06:01:32,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 06:01:32,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1287411312, now seen corresponding path program 2 times [2021-12-28 06:01:32,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-28 06:01:32,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1238572162] [2021-12-28 06:01:32,063 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-28 06:01:32,063 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-28 06:01:32,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-28 06:01:32,064 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-28 06:01:32,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-12-28 06:01:32,528 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-28 06:01:32,528 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 06:01:32,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-28 06:01:32,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 06:01:32,791 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-12-28 06:01:32,791 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 06:01:32,791 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-28 06:01:32,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1238572162] [2021-12-28 06:01:32,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1238572162] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 06:01:32,791 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 06:01:32,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-12-28 06:01:32,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312616869] [2021-12-28 06:01:32,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 06:01:32,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 06:01:32,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-28 06:01:32,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 06:01:32,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 06:01:32,792 INFO L87 Difference]: Start difference. First operand 1227 states and 1679 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 06:01:33,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 06:01:33,858 INFO L93 Difference]: Finished difference Result 1435 states and 1772 transitions. [2021-12-28 06:01:33,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 06:01:33,859 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2021-12-28 06:01:33,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 06:01:33,862 INFO L225 Difference]: With dead ends: 1435 [2021-12-28 06:01:33,863 INFO L226 Difference]: Without dead ends: 1435 [2021-12-28 06:01:33,863 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 06:01:33,863 INFO L933 BasicCegarLoop]: 743 mSDtfsCounter, 646 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 646 SdHoareTripleChecker+Valid, 1288 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-28 06:01:33,863 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [646 Valid, 1288 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-28 06:01:33,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1435 states. [2021-12-28 06:01:33,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1435 to 1225. [2021-12-28 06:01:33,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1225 states, 760 states have (on average 1.7131578947368422) internal successors, (1302), 980 states have internal predecessors, (1302), 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) [2021-12-28 06:01:33,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1225 states to 1225 states and 1670 transitions. [2021-12-28 06:01:33,914 INFO L78 Accepts]: Start accepts. Automaton has 1225 states and 1670 transitions. Word has length 31 [2021-12-28 06:01:33,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 06:01:33,915 INFO L470 AbstractCegarLoop]: Abstraction has 1225 states and 1670 transitions. [2021-12-28 06:01:33,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 06:01:33,915 INFO L276 IsEmpty]: Start isEmpty. Operand 1225 states and 1670 transitions. [2021-12-28 06:01:33,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-28 06:01:33,916 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 06:01:33,916 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 06:01:33,929 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-12-28 06:01:34,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-28 06:01:34,131 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [spin_lock_initErr0REQUIRES_VIOLATION, spin_lock_initErr1REQUIRES_VIOLATION, spin_lock_initErr2REQUIRES_VIOLATION, spin_lock_initErr3REQUIRES_VIOLATION (and 201 more)] === [2021-12-28 06:01:34,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 06:01:34,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1287411313, now seen corresponding path program 1 times [2021-12-28 06:01:34,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-28 06:01:34,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [511978893] [2021-12-28 06:01:34,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 06:01:34,132 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-28 06:01:34,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-28 06:01:34,148 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-28 06:01:34,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-12-28 06:01:34,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 06:01:34,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 620 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-28 06:01:34,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 06:01:34,854 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 06:01:34,854 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 06:01:35,148 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 06:01:35,148 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-28 06:01:35,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [511978893] [2021-12-28 06:01:35,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [511978893] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 06:01:35,148 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-28 06:01:35,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-12-28 06:01:35,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088586022] [2021-12-28 06:01:35,149 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-28 06:01:35,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-28 06:01:35,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-28 06:01:35,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-28 06:01:35,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2021-12-28 06:01:35,150 INFO L87 Difference]: Start difference. First operand 1225 states and 1670 transitions. Second operand has 16 states, 16 states have (on average 3.0625) internal successors, (49), 16 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 06:01:35,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 06:01:35,908 INFO L93 Difference]: Finished difference Result 1225 states and 1666 transitions. [2021-12-28 06:01:35,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-28 06:01:35,909 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.0625) internal successors, (49), 16 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2021-12-28 06:01:35,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 06:01:35,913 INFO L225 Difference]: With dead ends: 1225 [2021-12-28 06:01:35,913 INFO L226 Difference]: Without dead ends: 1225 [2021-12-28 06:01:35,913 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2021-12-28 06:01:35,914 INFO L933 BasicCegarLoop]: 783 mSDtfsCounter, 868 mSDsluCounter, 5466 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 900 SdHoareTripleChecker+Valid, 6249 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-28 06:01:35,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [900 Valid, 6249 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-28 06:01:35,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1225 states. [2021-12-28 06:01:35,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1225 to 1225. [2021-12-28 06:01:35,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1225 states, 760 states have (on average 1.7078947368421054) internal successors, (1298), 980 states have internal predecessors, (1298), 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) [2021-12-28 06:01:35,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1225 states to 1225 states and 1666 transitions. [2021-12-28 06:01:35,951 INFO L78 Accepts]: Start accepts. Automaton has 1225 states and 1666 transitions. Word has length 31 [2021-12-28 06:01:35,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 06:01:35,967 INFO L470 AbstractCegarLoop]: Abstraction has 1225 states and 1666 transitions. [2021-12-28 06:01:35,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.0625) internal successors, (49), 16 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-28 06:01:35,968 INFO L276 IsEmpty]: Start isEmpty. Operand 1225 states and 1666 transitions. [2021-12-28 06:01:35,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-12-28 06:01:35,970 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 06:01:35,970 INFO L514 BasicCegarLoop]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 06:01:36,002 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-12-28 06:01:36,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-28 06:01:36,186 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [spin_lock_initErr0REQUIRES_VIOLATION, spin_lock_initErr1REQUIRES_VIOLATION, spin_lock_initErr2REQUIRES_VIOLATION, spin_lock_initErr3REQUIRES_VIOLATION (and 201 more)] === [2021-12-28 06:01:36,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 06:01:36,186 INFO L85 PathProgramCache]: Analyzing trace with hash 338189670, now seen corresponding path program 3 times [2021-12-28 06:01:36,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-28 06:01:36,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2038485899] [2021-12-28 06:01:36,187 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-28 06:01:36,187 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-28 06:01:36,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-28 06:01:36,201 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-28 06:01:36,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-12-28 06:01:37,671 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-12-28 06:01:37,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 06:01:37,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 678 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-28 06:01:37,699 INFO L286 TraceCheckSpWp]: Computing forward predicates...