./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inw.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inw.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 6e6f79eda5be95b806b33aaa2a353a360ae33a1e35cc1bf6f128d14768d932de --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 06:02:07,079 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 06:02:07,092 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 06:02:07,152 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 06:02:07,152 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 06:02:07,155 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 06:02:07,156 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 06:02:07,158 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 06:02:07,160 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 06:02:07,163 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 06:02:07,164 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 06:02:07,165 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 06:02:07,165 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 06:02:07,167 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 06:02:07,168 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 06:02:07,171 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 06:02:07,171 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 06:02:07,172 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 06:02:07,187 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 06:02:07,192 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 06:02:07,193 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 06:02:07,194 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 06:02:07,195 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 06:02:07,195 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 06:02:07,200 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 06:02:07,200 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 06:02:07,200 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 06:02:07,201 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 06:02:07,202 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 06:02:07,202 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 06:02:07,203 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 06:02:07,203 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 06:02:07,204 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 06:02:07,205 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 06:02:07,206 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 06:02:07,206 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 06:02:07,207 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 06:02:07,207 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 06:02:07,207 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 06:02:07,208 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 06:02:07,209 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 06:02:07,210 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-16 06:02:07,248 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 06:02:07,249 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 06:02:07,249 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 06:02:07,249 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 06:02:07,250 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 06:02:07,250 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 06:02:07,251 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 06:02:07,251 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 06:02:07,251 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 06:02:07,251 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 06:02:07,252 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 06:02:07,252 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-16 06:02:07,252 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 06:02:07,252 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 06:02:07,253 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 06:02:07,267 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-16 06:02:07,267 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-16 06:02:07,267 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-16 06:02:07,268 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 06:02:07,268 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-16 06:02:07,268 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 06:02:07,268 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 06:02:07,268 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 06:02:07,268 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 06:02:07,268 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 06:02:07,269 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 06:02:07,270 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 06:02:07,270 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 06:02:07,270 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 06:02:07,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 06:02:07,270 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 06:02:07,270 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6e6f79eda5be95b806b33aaa2a353a360ae33a1e35cc1bf6f128d14768d932de [2021-12-16 06:02:07,603 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 06:02:07,624 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 06:02:07,626 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 06:02:07,627 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 06:02:07,628 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 06:02:07,629 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inw.i [2021-12-16 06:02:07,684 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/056975bfb/57ae20a6fe0144d2a02a50e6b212723c/FLAGa3fd85e2d [2021-12-16 06:02:08,175 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 06:02:08,175 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inw.i [2021-12-16 06:02:08,214 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/056975bfb/57ae20a6fe0144d2a02a50e6b212723c/FLAGa3fd85e2d [2021-12-16 06:02:08,475 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/056975bfb/57ae20a6fe0144d2a02a50e6b212723c [2021-12-16 06:02:08,477 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 06:02:08,480 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 06:02:08,484 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 06:02:08,484 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 06:02:08,487 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 06:02:08,488 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 06:02:08" (1/1) ... [2021-12-16 06:02:08,489 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@220cbe46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:02:08, skipping insertion in model container [2021-12-16 06:02:08,489 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 06:02:08" (1/1) ... [2021-12-16 06:02:08,494 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 06:02:08,555 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 06:02:08,701 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inw.i[452,465] [2021-12-16 06:02:09,413 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 06:02:09,449 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-12-16 06:02:09,450 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3c11efb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:02:09, skipping insertion in model container [2021-12-16 06:02:09,450 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 06:02:09,451 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-12-16 06:02:09,453 INFO L158 Benchmark]: Toolchain (without parser) took 971.22ms. Allocated memory is still 113.2MB. Free memory was 80.6MB in the beginning and 57.9MB in the end (delta: 22.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2021-12-16 06:02:09,454 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 113.2MB. Free memory was 69.6MB in the beginning and 69.5MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 06:02:09,455 INFO L158 Benchmark]: CACSL2BoogieTranslator took 966.61ms. Allocated memory is still 113.2MB. Free memory was 80.4MB in the beginning and 57.9MB in the end (delta: 22.4MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2021-12-16 06:02:09,456 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 113.2MB. Free memory was 69.6MB in the beginning and 69.5MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 966.61ms. Allocated memory is still 113.2MB. Free memory was 80.4MB in the beginning and 57.9MB in the end (delta: 22.4MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2976]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inw.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 6e6f79eda5be95b806b33aaa2a353a360ae33a1e35cc1bf6f128d14768d932de --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 06:02:11,059 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 06:02:11,060 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 06:02:11,087 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 06:02:11,087 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 06:02:11,090 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 06:02:11,091 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 06:02:11,095 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 06:02:11,097 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 06:02:11,100 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 06:02:11,101 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 06:02:11,104 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 06:02:11,105 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 06:02:11,107 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 06:02:11,108 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 06:02:11,111 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 06:02:11,112 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 06:02:11,113 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 06:02:11,114 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 06:02:11,119 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 06:02:11,120 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 06:02:11,121 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 06:02:11,122 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 06:02:11,123 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 06:02:11,127 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 06:02:11,127 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 06:02:11,127 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 06:02:11,128 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 06:02:11,129 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 06:02:11,129 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 06:02:11,130 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 06:02:11,130 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 06:02:11,132 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 06:02:11,132 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 06:02:11,134 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 06:02:11,134 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 06:02:11,135 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 06:02:11,135 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 06:02:11,135 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 06:02:11,137 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 06:02:11,137 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 06:02:11,141 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-12-16 06:02:11,176 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 06:02:11,176 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 06:02:11,177 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 06:02:11,177 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 06:02:11,178 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 06:02:11,178 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 06:02:11,179 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 06:02:11,179 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 06:02:11,180 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 06:02:11,180 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 06:02:11,180 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 06:02:11,180 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-16 06:02:11,181 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 06:02:11,181 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 06:02:11,181 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 06:02:11,181 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-16 06:02:11,181 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-16 06:02:11,181 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-16 06:02:11,182 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 06:02:11,182 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-16 06:02:11,182 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-16 06:02:11,182 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-16 06:02:11,182 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 06:02:11,190 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 06:02:11,191 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 06:02:11,191 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 06:02:11,191 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 06:02:11,191 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 06:02:11,191 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 06:02:11,191 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 06:02:11,192 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-16 06:02:11,192 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-16 06:02:11,192 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 06:02:11,192 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-16 06:02:11,192 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6e6f79eda5be95b806b33aaa2a353a360ae33a1e35cc1bf6f128d14768d932de [2021-12-16 06:02:11,476 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 06:02:11,491 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 06:02:11,493 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 06:02:11,495 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 06:02:11,496 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 06:02:11,497 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inw.i [2021-12-16 06:02:11,551 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be1203db1/b19b25a3a3c343e59f274dc522248d61/FLAGd2ab1647c [2021-12-16 06:02:12,044 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 06:02:12,045 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inw.i [2021-12-16 06:02:12,066 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be1203db1/b19b25a3a3c343e59f274dc522248d61/FLAGd2ab1647c [2021-12-16 06:02:12,301 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be1203db1/b19b25a3a3c343e59f274dc522248d61 [2021-12-16 06:02:12,303 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 06:02:12,305 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 06:02:12,307 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 06:02:12,307 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 06:02:12,310 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 06:02:12,310 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 06:02:12" (1/1) ... [2021-12-16 06:02:12,312 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65dedddc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:02:12, skipping insertion in model container [2021-12-16 06:02:12,312 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 06:02:12" (1/1) ... [2021-12-16 06:02:12,317 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 06:02:12,382 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 06:02:12,561 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inw.i[452,465] [2021-12-16 06:02:13,267 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 06:02:13,316 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-16 06:02:13,336 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 06:02:13,339 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inw.i[452,465] [2021-12-16 06:02:13,511 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 06:02:13,530 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 06:02:13,538 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inw.i[452,465] [2021-12-16 06:02:13,677 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 06:02:13,799 INFO L208 MainTranslator]: Completed translation [2021-12-16 06:02:13,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:02:13 WrapperNode [2021-12-16 06:02:13,799 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 06:02:13,800 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 06:02:13,800 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 06:02:13,801 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 06:02:13,805 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:02:13" (1/1) ... [2021-12-16 06:02:13,860 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:02:13" (1/1) ... [2021-12-16 06:02:13,899 INFO L137 Inliner]: procedures = 482, calls = 839, calls flagged for inlining = 54, calls inlined = 38, statements flattened = 979 [2021-12-16 06:02:13,900 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 06:02:13,901 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 06:02:13,901 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 06:02:13,901 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 06:02:13,907 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:02:13" (1/1) ... [2021-12-16 06:02:13,907 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:02:13" (1/1) ... [2021-12-16 06:02:13,912 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:02:13" (1/1) ... [2021-12-16 06:02:13,913 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:02:13" (1/1) ... [2021-12-16 06:02:13,935 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:02:13" (1/1) ... [2021-12-16 06:02:13,940 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:02:13" (1/1) ... [2021-12-16 06:02:13,947 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:02:13" (1/1) ... [2021-12-16 06:02:13,955 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 06:02:13,956 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 06:02:13,956 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 06:02:13,956 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 06:02:13,957 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:02:13" (1/1) ... [2021-12-16 06:02:13,961 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 06:02:13,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 06:02:14,004 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-16 06:02:14,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-16 06:02:14,085 INFO L130 BoogieDeclarations]: Found specification of procedure zf_timer_off [2021-12-16 06:02:14,086 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_timer_off [2021-12-16 06:02:14,086 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~C_UINT~X~C_ULONG~TO~C_INT [2021-12-16 06:02:14,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~C_UINT~X~C_ULONG~TO~C_INT [2021-12-16 06:02:14,086 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-12-16 06:02:14,086 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_atomic_begin [2021-12-16 06:02:14,086 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-16 06:02:14,086 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-16 06:02:14,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-16 06:02:14,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2 [2021-12-16 06:02:14,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-16 06:02:14,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-12-16 06:02:14,086 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-12-16 06:02:14,086 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-12-16 06:02:14,086 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-12-16 06:02:14,086 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_atomic_end [2021-12-16 06:02:14,086 INFO L130 BoogieDeclarations]: Found specification of procedure zf_get_control [2021-12-16 06:02:14,086 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_get_control [2021-12-16 06:02:14,086 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2021-12-16 06:02:14,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2021-12-16 06:02:14,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-16 06:02:14,087 INFO L130 BoogieDeclarations]: Found specification of procedure request_region [2021-12-16 06:02:14,087 INFO L138 BoogieDeclarations]: Found implementation of procedure request_region [2021-12-16 06:02:14,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 06:02:14,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-16 06:02:14,087 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-16 06:02:14,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-16 06:02:14,087 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irqsave [2021-12-16 06:02:14,087 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irqsave [2021-12-16 06:02:14,087 INFO L130 BoogieDeclarations]: Found specification of procedure release_region [2021-12-16 06:02:14,087 INFO L138 BoogieDeclarations]: Found implementation of procedure release_region [2021-12-16 06:02:14,088 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 06:02:14,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 06:02:14,088 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_init [2021-12-16 06:02:14,088 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_init [2021-12-16 06:02:14,088 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-12-16 06:02:14,088 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-16 06:02:14,088 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-12-16 06:02:14,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-16 06:02:14,088 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-16 06:02:14,088 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-16 06:02:14,088 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2021-12-16 06:02:14,088 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2021-12-16 06:02:14,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-16 06:02:14,088 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-16 06:02:14,088 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2021-12-16 06:02:14,089 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2021-12-16 06:02:14,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-12-16 06:02:14,089 INFO L130 BoogieDeclarations]: Found specification of procedure cdev_add [2021-12-16 06:02:14,089 INFO L138 BoogieDeclarations]: Found implementation of procedure cdev_add [2021-12-16 06:02:14,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-12-16 06:02:14,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-12-16 06:02:14,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-16 06:02:14,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-16 06:02:14,091 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2021-12-16 06:02:14,091 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2021-12-16 06:02:14,091 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2021-12-16 06:02:14,091 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2021-12-16 06:02:14,091 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2021-12-16 06:02:14,091 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2021-12-16 06:02:14,091 INFO L130 BoogieDeclarations]: Found specification of procedure misc_deregister [2021-12-16 06:02:14,091 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_deregister [2021-12-16 06:02:14,091 INFO L130 BoogieDeclarations]: Found specification of procedure assert_context_process [2021-12-16 06:02:14,091 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_context_process [2021-12-16 06:02:14,091 INFO L130 BoogieDeclarations]: Found specification of procedure zf_set_control [2021-12-16 06:02:14,091 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_set_control [2021-12-16 06:02:14,092 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~C_ULONG~X~$Pointer$~TO~C_LONG [2021-12-16 06:02:14,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~C_ULONG~X~$Pointer$~TO~C_LONG [2021-12-16 06:02:14,092 INFO L130 BoogieDeclarations]: Found specification of procedure zf_readw [2021-12-16 06:02:14,092 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_readw [2021-12-16 06:02:14,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-12-16 06:02:14,092 INFO L130 BoogieDeclarations]: Found specification of procedure zf_ping [2021-12-16 06:02:14,092 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_ping [2021-12-16 06:02:14,092 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-12-16 06:02:14,092 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-12-16 06:02:14,092 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~C_ULONG~TO~VOID [2021-12-16 06:02:14,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~C_ULONG~TO~VOID [2021-12-16 06:02:14,572 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 06:02:14,573 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 06:02:19,015 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 06:02:19,030 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 06:02:19,032 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-12-16 06:02:19,035 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 06:02:19 BoogieIcfgContainer [2021-12-16 06:02:19,044 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 06:02:19,046 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 06:02:19,046 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 06:02:19,048 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 06:02:19,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 06:02:12" (1/3) ... [2021-12-16 06:02:19,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e02f3b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 06:02:19, skipping insertion in model container [2021-12-16 06:02:19,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:02:13" (2/3) ... [2021-12-16 06:02:19,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e02f3b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 06:02:19, skipping insertion in model container [2021-12-16 06:02:19,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 06:02:19" (3/3) ... [2021-12-16 06:02:19,051 INFO L111 eAbstractionObserver]: Analyzing ICFG ddv_machzwd_inw.i [2021-12-16 06:02:19,055 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 06:02:19,056 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 206 error locations. [2021-12-16 06:02:19,083 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 06:02:19,090 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-16 06:02:19,090 INFO L340 AbstractCegarLoop]: Starting to check reachability of 206 error locations. [2021-12-16 06:02:19,114 INFO L276 IsEmpty]: Start isEmpty. Operand has 671 states, 360 states have (on average 1.8166666666666667) internal successors, (654), 571 states have internal predecessors, (654), 78 states have call successors, (78), 26 states have call predecessors, (78), 26 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2021-12-16 06:02:19,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-16 06:02:19,118 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:02:19,119 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-16 06:02:19,119 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 202 more)] === [2021-12-16 06:02:19,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:02:19,125 INFO L85 PathProgramCache]: Analyzing trace with hash 346313650, now seen corresponding path program 1 times [2021-12-16 06:02:19,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 06:02:19,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2063823892] [2021-12-16 06:02:19,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:02:19,136 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 06:02:19,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 06:02:19,190 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 06:02:19,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-16 06:02:19,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:02:19,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-16 06:02:19,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 06:02:19,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:02:19,619 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 06:02:19,620 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 06:02:19,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2063823892] [2021-12-16 06:02:19,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2063823892] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:02:19,621 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:02:19,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 06:02:19,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76185085] [2021-12-16 06:02:19,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:02:19,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 06:02:19,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 06:02:19,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 06:02:19,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 06:02:19,657 INFO L87 Difference]: Start difference. First operand has 671 states, 360 states have (on average 1.8166666666666667) internal successors, (654), 571 states have internal predecessors, (654), 78 states have call successors, (78), 26 states have call predecessors, (78), 26 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) Second operand has 5 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 06:02:21,682 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 06:02:23,694 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 06:02:25,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:02:25,770 INFO L93 Difference]: Finished difference Result 1214 states and 1453 transitions. [2021-12-16 06:02:25,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 06:02:25,772 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-12-16 06:02:25,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:02:25,788 INFO L225 Difference]: With dead ends: 1214 [2021-12-16 06:02:25,788 INFO L226 Difference]: Without dead ends: 1210 [2021-12-16 06:02:25,789 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-16 06:02:25,792 INFO L933 BasicCegarLoop]: 764 mSDtfsCounter, 692 mSDsluCounter, 1740 mSDsCounter, 0 mSdLazyCounter, 1106 mSolverCounterSat, 4 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 693 SdHoareTripleChecker+Valid, 2504 SdHoareTripleChecker+Invalid, 1112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1106 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2021-12-16 06:02:25,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [693 Valid, 2504 Invalid, 1112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1106 Invalid, 2 Unknown, 0 Unchecked, 6.0s Time] [2021-12-16 06:02:25,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2021-12-16 06:02:25,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 995. [2021-12-16 06:02:25,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 995 states, 601 states have (on average 1.7970049916805324) internal successors, (1080), 822 states have internal predecessors, (1080), 138 states have call successors, (138), 50 states have call predecessors, (138), 50 states have return successors, (138), 131 states have call predecessors, (138), 138 states have call successors, (138) [2021-12-16 06:02:25,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1356 transitions. [2021-12-16 06:02:25,905 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1356 transitions. Word has length 5 [2021-12-16 06:02:25,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:02:25,906 INFO L470 AbstractCegarLoop]: Abstraction has 995 states and 1356 transitions. [2021-12-16 06:02:25,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 06:02:25,907 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1356 transitions. [2021-12-16 06:02:25,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-16 06:02:25,908 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:02:25,908 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-16 06:02:25,920 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-12-16 06:02:26,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 06:02:26,119 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 202 more)] === [2021-12-16 06:02:26,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:02:26,120 INFO L85 PathProgramCache]: Analyzing trace with hash 346313651, now seen corresponding path program 1 times [2021-12-16 06:02:26,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 06:02:26,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1540363172] [2021-12-16 06:02:26,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:02:26,121 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 06:02:26,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 06:02:26,122 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 06:02:26,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-16 06:02:26,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:02:26,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-16 06:02:26,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 06:02:26,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:02:26,522 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 06:02:26,522 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 06:02:26,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1540363172] [2021-12-16 06:02:26,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1540363172] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:02:26,523 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:02:26,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 06:02:26,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58248366] [2021-12-16 06:02:26,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:02:26,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 06:02:26,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 06:02:26,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 06:02:26,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 06:02:26,525 INFO L87 Difference]: Start difference. First operand 995 states and 1356 transitions. Second operand has 5 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 06:02:28,542 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 06:02:30,553 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 06:02:32,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:02:32,309 INFO L93 Difference]: Finished difference Result 1132 states and 1453 transitions. [2021-12-16 06:02:32,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 06:02:32,309 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-12-16 06:02:32,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:02:32,314 INFO L225 Difference]: With dead ends: 1132 [2021-12-16 06:02:32,314 INFO L226 Difference]: Without dead ends: 1132 [2021-12-16 06:02:32,315 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-16 06:02:32,315 INFO L933 BasicCegarLoop]: 845 mSDtfsCounter, 273 mSDsluCounter, 1805 mSDsCounter, 0 mSdLazyCounter, 850 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 2650 SdHoareTripleChecker+Invalid, 853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 850 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2021-12-16 06:02:32,315 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [274 Valid, 2650 Invalid, 853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 850 Invalid, 2 Unknown, 0 Unchecked, 5.7s Time] [2021-12-16 06:02:32,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1132 states. [2021-12-16 06:02:32,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1132 to 1071. [2021-12-16 06:02:32,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1071 states, 645 states have (on average 1.758139534883721) internal successors, (1134), 867 states have internal predecessors, (1134), 157 states have call successors, (157), 63 states have call predecessors, (157), 63 states have return successors, (157), 150 states have call predecessors, (157), 157 states have call successors, (157) [2021-12-16 06:02:32,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 1448 transitions. [2021-12-16 06:02:32,345 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 1448 transitions. Word has length 5 [2021-12-16 06:02:32,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:02:32,345 INFO L470 AbstractCegarLoop]: Abstraction has 1071 states and 1448 transitions. [2021-12-16 06:02:32,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 06:02:32,346 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 1448 transitions. [2021-12-16 06:02:32,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-16 06:02:32,346 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:02:32,346 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:02:32,356 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-12-16 06:02:32,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 06:02:32,559 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 202 more)] === [2021-12-16 06:02:32,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:02:32,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1264119090, now seen corresponding path program 1 times [2021-12-16 06:02:32,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 06:02:32,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [993996237] [2021-12-16 06:02:32,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:02:32,561 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 06:02:32,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 06:02:32,562 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 06:02:32,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-16 06:02:32,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:02:32,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 06:02:32,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 06:02:32,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:02:32,927 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 06:02:32,927 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 06:02:32,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [993996237] [2021-12-16 06:02:32,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [993996237] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:02:32,927 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:02:32,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-12-16 06:02:32,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245766357] [2021-12-16 06:02:32,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:02:32,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 06:02:32,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 06:02:32,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 06:02:32,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 06:02:32,929 INFO L87 Difference]: Start difference. First operand 1071 states and 1448 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:02:34,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:02:34,007 INFO L93 Difference]: Finished difference Result 1279 states and 1536 transitions. [2021-12-16 06:02:34,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 06:02:34,008 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-12-16 06:02:34,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:02:34,011 INFO L225 Difference]: With dead ends: 1279 [2021-12-16 06:02:34,012 INFO L226 Difference]: Without dead ends: 1279 [2021-12-16 06:02:34,012 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 06:02:34,012 INFO L933 BasicCegarLoop]: 747 mSDtfsCounter, 665 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 665 SdHoareTripleChecker+Valid, 1300 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-16 06:02:34,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [665 Valid, 1300 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-16 06:02:34,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1279 states. [2021-12-16 06:02:34,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1279 to 1070. [2021-12-16 06:02:34,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1070 states, 645 states have (on average 1.7503875968992249) internal successors, (1129), 866 states have internal predecessors, (1129), 157 states have call successors, (157), 63 states have call predecessors, (157), 63 states have return successors, (157), 150 states have call predecessors, (157), 157 states have call successors, (157) [2021-12-16 06:02:34,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1070 states to 1070 states and 1443 transitions. [2021-12-16 06:02:34,037 INFO L78 Accepts]: Start accepts. Automaton has 1070 states and 1443 transitions. Word has length 11 [2021-12-16 06:02:34,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:02:34,037 INFO L470 AbstractCegarLoop]: Abstraction has 1070 states and 1443 transitions. [2021-12-16 06:02:34,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:02:34,037 INFO L276 IsEmpty]: Start isEmpty. Operand 1070 states and 1443 transitions. [2021-12-16 06:02:34,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-16 06:02:34,038 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:02:34,038 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:02:34,066 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-12-16 06:02:34,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 06:02:34,267 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 202 more)] === [2021-12-16 06:02:34,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:02:34,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1264119091, now seen corresponding path program 1 times [2021-12-16 06:02:34,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 06:02:34,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [151199013] [2021-12-16 06:02:34,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:02:34,269 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 06:02:34,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 06:02:34,270 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 06:02:34,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-16 06:02:34,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:02:34,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-16 06:02:34,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 06:02:34,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:02:34,690 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 06:02:34,690 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 06:02:34,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [151199013] [2021-12-16 06:02:34,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [151199013] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:02:34,690 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:02:34,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 06:02:34,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145261950] [2021-12-16 06:02:34,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:02:34,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 06:02:34,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 06:02:34,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 06:02:34,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-16 06:02:34,691 INFO L87 Difference]: Start difference. First operand 1070 states and 1443 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:02:36,709 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 06:02:37,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:02:37,906 INFO L93 Difference]: Finished difference Result 1138 states and 1459 transitions. [2021-12-16 06:02:37,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 06:02:37,907 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-12-16 06:02:37,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:02:37,911 INFO L225 Difference]: With dead ends: 1138 [2021-12-16 06:02:37,911 INFO L226 Difference]: Without dead ends: 1138 [2021-12-16 06:02:37,911 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-16 06:02:37,913 INFO L933 BasicCegarLoop]: 842 mSDtfsCounter, 273 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 1529 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-12-16 06:02:37,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [273 Valid, 1529 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 410 Invalid, 1 Unknown, 0 Unchecked, 3.2s Time] [2021-12-16 06:02:37,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1138 states. [2021-12-16 06:02:37,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1138 to 1073. [2021-12-16 06:02:37,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1073 states, 648 states have (on average 1.7469135802469136) internal successors, (1132), 869 states have internal predecessors, (1132), 157 states have call successors, (157), 63 states have call predecessors, (157), 63 states have return successors, (157), 150 states have call predecessors, (157), 157 states have call successors, (157) [2021-12-16 06:02:37,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1073 states to 1073 states and 1446 transitions. [2021-12-16 06:02:37,942 INFO L78 Accepts]: Start accepts. Automaton has 1073 states and 1446 transitions. Word has length 11 [2021-12-16 06:02:37,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:02:37,942 INFO L470 AbstractCegarLoop]: Abstraction has 1073 states and 1446 transitions. [2021-12-16 06:02:37,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:02:37,943 INFO L276 IsEmpty]: Start isEmpty. Operand 1073 states and 1446 transitions. [2021-12-16 06:02:37,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-16 06:02:37,943 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:02:37,943 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:02:37,965 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-12-16 06:02:38,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 06:02:38,155 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 202 more)] === [2021-12-16 06:02:38,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:02:38,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1098875471, now seen corresponding path program 1 times [2021-12-16 06:02:38,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 06:02:38,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2077786521] [2021-12-16 06:02:38,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:02:38,157 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 06:02:38,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 06:02:38,158 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 06:02:38,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-16 06:02:38,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:02:38,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-16 06:02:38,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 06:02:38,615 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:02:38,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 06:02:38,972 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:02:38,973 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 06:02:38,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2077786521] [2021-12-16 06:02:38,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2077786521] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 06:02:38,973 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-16 06:02:38,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4] total 7 [2021-12-16 06:02:38,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589775117] [2021-12-16 06:02:38,973 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-16 06:02:38,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 06:02:38,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 06:02:38,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 06:02:38,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-16 06:02:38,974 INFO L87 Difference]: Start difference. First operand 1073 states and 1446 transitions. Second operand has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-16 06:02:40,991 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 06:02:43,004 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 06:02:49,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:02:49,308 INFO L93 Difference]: Finished difference Result 1353 states and 1698 transitions. [2021-12-16 06:02:49,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 06:02:49,309 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 14 [2021-12-16 06:02:49,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:02:49,314 INFO L225 Difference]: With dead ends: 1353 [2021-12-16 06:02:49,315 INFO L226 Difference]: Without dead ends: 1353 [2021-12-16 06:02:49,315 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2021-12-16 06:02:49,316 INFO L933 BasicCegarLoop]: 843 mSDtfsCounter, 1346 mSDsluCounter, 1897 mSDsCounter, 0 mSdLazyCounter, 1175 mSolverCounterSat, 168 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1358 SdHoareTripleChecker+Valid, 2740 SdHoareTripleChecker+Invalid, 1345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 1175 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2021-12-16 06:02:49,316 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1358 Valid, 2740 Invalid, 1345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 1175 Invalid, 2 Unknown, 0 Unchecked, 10.0s Time] [2021-12-16 06:02:49,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1353 states. [2021-12-16 06:02:49,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1353 to 1223. [2021-12-16 06:02:49,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1223 states, 755 states have (on average 1.732450331125828) internal successors, (1308), 978 states have internal predecessors, (1308), 184 states have call successors, (184), 79 states have call predecessors, (184), 79 states have return successors, (184), 176 states have call predecessors, (184), 184 states have call successors, (184) [2021-12-16 06:02:49,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1223 states to 1223 states and 1676 transitions. [2021-12-16 06:02:49,344 INFO L78 Accepts]: Start accepts. Automaton has 1223 states and 1676 transitions. Word has length 14 [2021-12-16 06:02:49,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:02:49,344 INFO L470 AbstractCegarLoop]: Abstraction has 1223 states and 1676 transitions. [2021-12-16 06:02:49,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-16 06:02:49,344 INFO L276 IsEmpty]: Start isEmpty. Operand 1223 states and 1676 transitions. [2021-12-16 06:02:49,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-16 06:02:49,345 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:02:49,345 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:02:49,367 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-12-16 06:02:49,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 06:02:49,559 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 202 more)] === [2021-12-16 06:02:49,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:02:49,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1126023645, now seen corresponding path program 1 times [2021-12-16 06:02:49,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 06:02:49,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [830978771] [2021-12-16 06:02:49,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:02:49,561 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 06:02:49,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 06:02:49,563 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 06:02:49,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-12-16 06:02:49,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:02:49,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 560 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-16 06:02:49,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 06:02:50,019 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:02:50,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 06:02:50,085 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:02:50,085 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 06:02:50,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [830978771] [2021-12-16 06:02:50,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [830978771] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 06:02:50,086 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-16 06:02:50,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-12-16 06:02:50,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32743532] [2021-12-16 06:02:50,086 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-16 06:02:50,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 06:02:50,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 06:02:50,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 06:02:50,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-16 06:02:50,087 INFO L87 Difference]: Start difference. First operand 1223 states and 1676 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:02:50,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:02:50,379 INFO L93 Difference]: Finished difference Result 1229 states and 1680 transitions. [2021-12-16 06:02:50,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-16 06:02:50,380 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2021-12-16 06:02:50,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:02:50,384 INFO L225 Difference]: With dead ends: 1229 [2021-12-16 06:02:50,384 INFO L226 Difference]: Without dead ends: 1229 [2021-12-16 06:02:50,384 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-12-16 06:02:50,385 INFO L933 BasicCegarLoop]: 790 mSDtfsCounter, 1284 mSDsluCounter, 2174 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1316 SdHoareTripleChecker+Valid, 2964 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 06:02:50,385 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1316 Valid, 2964 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 06:02:50,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2021-12-16 06:02:50,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 1228. [2021-12-16 06:02:50,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1228 states, 760 states have (on average 1.7263157894736842) internal successors, (1312), 983 states have internal predecessors, (1312), 184 states have call successors, (184), 79 states have call predecessors, (184), 79 states have return successors, (184), 176 states have call predecessors, (184), 184 states have call successors, (184) [2021-12-16 06:02:50,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1228 states to 1228 states and 1680 transitions. [2021-12-16 06:02:50,414 INFO L78 Accepts]: Start accepts. Automaton has 1228 states and 1680 transitions. Word has length 19 [2021-12-16 06:02:50,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:02:50,415 INFO L470 AbstractCegarLoop]: Abstraction has 1228 states and 1680 transitions. [2021-12-16 06:02:50,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:02:50,415 INFO L276 IsEmpty]: Start isEmpty. Operand 1228 states and 1680 transitions. [2021-12-16 06:02:50,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-16 06:02:50,416 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:02:50,416 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:02:50,430 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-12-16 06:02:50,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 06:02:50,631 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 202 more)] === [2021-12-16 06:02:50,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:02:50,631 INFO L85 PathProgramCache]: Analyzing trace with hash 741098035, now seen corresponding path program 2 times [2021-12-16 06:02:50,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 06:02:50,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [62868051] [2021-12-16 06:02:50,632 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-16 06:02:50,632 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 06:02:50,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 06:02:50,633 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-16 06:02:50,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-12-16 06:02:51,139 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-16 06:02:51,139 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 06:02:51,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 588 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-16 06:02:51,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 06:02:51,452 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:02:51,452 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 06:02:52,433 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:02:52,433 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 06:02:52,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [62868051] [2021-12-16 06:02:52,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [62868051] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 06:02:52,433 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-16 06:02:52,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 14 [2021-12-16 06:02:52,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732678045] [2021-12-16 06:02:52,434 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-16 06:02:52,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-16 06:02:52,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 06:02:52,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-16 06:02:52,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2021-12-16 06:02:52,435 INFO L87 Difference]: Start difference. First operand 1228 states and 1680 transitions. Second operand has 15 states, 14 states have (on average 3.0) internal successors, (42), 15 states have internal predecessors, (42), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-16 06:02:54,457 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 06:02:56,468 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 06:02:58,479 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-16 06:03:13,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:03:13,807 INFO L93 Difference]: Finished difference Result 1357 states and 1715 transitions. [2021-12-16 06:03:13,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-16 06:03:13,808 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 [2021-12-16 06:03:13,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:03:13,813 INFO L225 Difference]: With dead ends: 1357 [2021-12-16 06:03:13,813 INFO L226 Difference]: Without dead ends: 1357 [2021-12-16 06:03:13,813 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=243, Invalid=407, Unknown=0, NotChecked=0, Total=650 [2021-12-16 06:03:13,813 INFO L933 BasicCegarLoop]: 831 mSDtfsCounter, 1007 mSDsluCounter, 4890 mSDsCounter, 0 mSdLazyCounter, 2757 mSolverCounterSat, 188 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1019 SdHoareTripleChecker+Valid, 5721 SdHoareTripleChecker+Invalid, 2948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 2757 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.6s IncrementalHoareTripleChecker+Time [2021-12-16 06:03:13,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1019 Valid, 5721 Invalid, 2948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 2757 Invalid, 3 Unknown, 0 Unchecked, 19.6s Time] [2021-12-16 06:03:13,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1357 states. [2021-12-16 06:03:13,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1357 to 1241. [2021-12-16 06:03:13,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1241 states, 773 states have (on average 1.7179818887451488) internal successors, (1328), 996 states have internal predecessors, (1328), 184 states have call successors, (184), 79 states have call predecessors, (184), 79 states have return successors, (184), 176 states have call predecessors, (184), 184 states have call successors, (184) [2021-12-16 06:03:13,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1241 states to 1241 states and 1696 transitions. [2021-12-16 06:03:13,839 INFO L78 Accepts]: Start accepts. Automaton has 1241 states and 1696 transitions. Word has length 23 [2021-12-16 06:03:13,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:03:13,840 INFO L470 AbstractCegarLoop]: Abstraction has 1241 states and 1696 transitions. [2021-12-16 06:03:13,840 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) [2021-12-16 06:03:13,840 INFO L276 IsEmpty]: Start isEmpty. Operand 1241 states and 1696 transitions. [2021-12-16 06:03:13,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-16 06:03:13,841 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:03:13,841 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:03:13,858 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-12-16 06:03:14,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 06:03:14,058 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 202 more)] === [2021-12-16 06:03:14,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:03:14,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1506547421, now seen corresponding path program 2 times [2021-12-16 06:03:14,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 06:03:14,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [218127655] [2021-12-16 06:03:14,059 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-16 06:03:14,059 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 06:03:14,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 06:03:14,076 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) [2021-12-16 06:03:14,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-12-16 06:03:14,494 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-16 06:03:14,495 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 06:03:14,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 06:03:14,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 06:03:14,670 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-12-16 06:03:14,670 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 06:03:14,670 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 06:03:14,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [218127655] [2021-12-16 06:03:14,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [218127655] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:03:14,671 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:03:14,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-12-16 06:03:14,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417824788] [2021-12-16 06:03:14,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:03:14,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 06:03:14,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 06:03:14,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 06:03:14,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 06:03:14,672 INFO L87 Difference]: Start difference. First operand 1241 states and 1696 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) [2021-12-16 06:03:15,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:03:15,889 INFO L93 Difference]: Finished difference Result 1451 states and 1790 transitions. [2021-12-16 06:03:15,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 06:03:15,890 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 [2021-12-16 06:03:15,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:03:15,894 INFO L225 Difference]: With dead ends: 1451 [2021-12-16 06:03:15,894 INFO L226 Difference]: Without dead ends: 1451 [2021-12-16 06:03:15,895 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 [2021-12-16 06:03:15,896 INFO L933 BasicCegarLoop]: 748 mSDtfsCounter, 651 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 651 SdHoareTripleChecker+Valid, 1298 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-16 06:03:15,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [651 Valid, 1298 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-16 06:03:15,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1451 states. [2021-12-16 06:03:15,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1451 to 1239. [2021-12-16 06:03:15,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1239 states, 773 states have (on average 1.7063389391979302) internal successors, (1319), 994 states have internal predecessors, (1319), 184 states have call successors, (184), 79 states have call predecessors, (184), 79 states have return successors, (184), 176 states have call predecessors, (184), 184 states have call successors, (184) [2021-12-16 06:03:15,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1239 states to 1239 states and 1687 transitions. [2021-12-16 06:03:15,920 INFO L78 Accepts]: Start accepts. Automaton has 1239 states and 1687 transitions. Word has length 31 [2021-12-16 06:03:15,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:03:15,920 INFO L470 AbstractCegarLoop]: Abstraction has 1239 states and 1687 transitions. [2021-12-16 06:03:15,921 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) [2021-12-16 06:03:15,921 INFO L276 IsEmpty]: Start isEmpty. Operand 1239 states and 1687 transitions. [2021-12-16 06:03:15,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-16 06:03:15,921 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:03:15,922 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:03:15,940 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-12-16 06:03:16,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 06:03:16,137 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 202 more)] === [2021-12-16 06:03:16,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:03:16,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1506547422, now seen corresponding path program 1 times [2021-12-16 06:03:16,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 06:03:16,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1320028561] [2021-12-16 06:03:16,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:03:16,138 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 06:03:16,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 06:03:16,140 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) [2021-12-16 06:03:16,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-12-16 06:03:16,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:03:16,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 620 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-16 06:03:16,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 06:03:16,701 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:03:16,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 06:03:16,884 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:03:16,885 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 06:03:16,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1320028561] [2021-12-16 06:03:16,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1320028561] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 06:03:16,885 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-16 06:03:16,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-12-16 06:03:16,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244682344] [2021-12-16 06:03:16,885 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-16 06:03:16,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-16 06:03:16,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 06:03:16,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-16 06:03:16,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2021-12-16 06:03:16,886 INFO L87 Difference]: Start difference. First operand 1239 states and 1687 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) [2021-12-16 06:03:17,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:03:17,425 INFO L93 Difference]: Finished difference Result 1239 states and 1683 transitions. [2021-12-16 06:03:17,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-16 06:03:17,427 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 [2021-12-16 06:03:17,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:03:17,431 INFO L225 Difference]: With dead ends: 1239 [2021-12-16 06:03:17,431 INFO L226 Difference]: Without dead ends: 1239 [2021-12-16 06:03:17,431 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2021-12-16 06:03:17,432 INFO L933 BasicCegarLoop]: 788 mSDtfsCounter, 3391 mSDsluCounter, 5178 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3423 SdHoareTripleChecker+Valid, 5966 SdHoareTripleChecker+Invalid, 655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 244 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-16 06:03:17,432 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3423 Valid, 5966 Invalid, 655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [244 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-16 06:03:17,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1239 states. [2021-12-16 06:03:17,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1239 to 1239. [2021-12-16 06:03:17,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1239 states, 773 states have (on average 1.7011642949547219) internal successors, (1315), 994 states have internal predecessors, (1315), 184 states have call successors, (184), 79 states have call predecessors, (184), 79 states have return successors, (184), 176 states have call predecessors, (184), 184 states have call successors, (184) [2021-12-16 06:03:17,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1239 states to 1239 states and 1683 transitions. [2021-12-16 06:03:17,454 INFO L78 Accepts]: Start accepts. Automaton has 1239 states and 1683 transitions. Word has length 31 [2021-12-16 06:03:17,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:03:17,454 INFO L470 AbstractCegarLoop]: Abstraction has 1239 states and 1683 transitions. [2021-12-16 06:03:17,454 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) [2021-12-16 06:03:17,454 INFO L276 IsEmpty]: Start isEmpty. Operand 1239 states and 1683 transitions. [2021-12-16 06:03:17,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-12-16 06:03:17,455 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:03:17,455 INFO L514 BasicCegarLoop]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:03:17,474 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-12-16 06:03:17,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 06:03:17,672 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 202 more)] === [2021-12-16 06:03:17,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:03:17,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1109995955, now seen corresponding path program 3 times [2021-12-16 06:03:17,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 06:03:17,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [85447038] [2021-12-16 06:03:17,673 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-16 06:03:17,673 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 06:03:17,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 06:03:17,679 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) [2021-12-16 06:03:17,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-12-16 06:03:19,116 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-12-16 06:03:19,116 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 06:03:19,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 678 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-16 06:03:19,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 06:03:19,770 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 10 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:03:19,770 INFO L328 TraceCheckSpWp]: Computing backward predicates...