./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/pthread-memsafety/list1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 26d01a9c 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/pthread-memsafety/list1.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 1da30149a66945688e686f90b0d1749d09e30bdcfdeae7b4325d99ddbe3a8206 --- Real Ultimate output --- This is Ultimate 0.2.2-?-26d01a9 [2023-02-17 03:34:19,190 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-17 03:34:19,192 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-17 03:34:19,223 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-17 03:34:19,223 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-17 03:34:19,225 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-17 03:34:19,227 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-17 03:34:19,229 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-17 03:34:19,230 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-17 03:34:19,234 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-17 03:34:19,235 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-17 03:34:19,236 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-17 03:34:19,236 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-17 03:34:19,238 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-17 03:34:19,239 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-17 03:34:19,240 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-17 03:34:19,241 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-17 03:34:19,242 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-17 03:34:19,243 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-17 03:34:19,247 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-17 03:34:19,247 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-17 03:34:19,248 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-17 03:34:19,249 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-17 03:34:19,250 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-17 03:34:19,256 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-17 03:34:19,256 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-17 03:34:19,257 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-17 03:34:19,258 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-17 03:34:19,258 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-17 03:34:19,259 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-17 03:34:19,259 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-17 03:34:19,259 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-17 03:34:19,260 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-17 03:34:19,261 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-17 03:34:19,262 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-17 03:34:19,262 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-17 03:34:19,262 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-17 03:34:19,263 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-17 03:34:19,263 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-17 03:34:19,264 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-17 03:34:19,264 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-17 03:34:19,265 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-02-17 03:34:19,287 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-17 03:34:19,287 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-17 03:34:19,288 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-17 03:34:19,288 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-17 03:34:19,289 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-17 03:34:19,289 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-17 03:34:19,289 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-17 03:34:19,289 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-17 03:34:19,290 INFO L138 SettingsManager]: * Use SBE=true [2023-02-17 03:34:19,290 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-17 03:34:19,290 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-17 03:34:19,291 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-17 03:34:19,291 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-17 03:34:19,291 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-17 03:34:19,291 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-17 03:34:19,291 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-17 03:34:19,291 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-17 03:34:19,292 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-17 03:34:19,292 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-17 03:34:19,292 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-17 03:34:19,292 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-17 03:34:19,292 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-17 03:34:19,292 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-17 03:34:19,293 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-17 03:34:19,293 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-17 03:34:19,293 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 03:34:19,293 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-17 03:34:19,293 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-17 03:34:19,293 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-17 03:34:19,294 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-17 03:34:19,294 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-17 03:34:19,294 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-17 03:34:19,294 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-17 03:34:19,294 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-17 03:34:19,295 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1da30149a66945688e686f90b0d1749d09e30bdcfdeae7b4325d99ddbe3a8206 [2023-02-17 03:34:19,498 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-17 03:34:19,527 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-17 03:34:19,530 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-17 03:34:19,531 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-17 03:34:19,531 INFO L275 PluginConnector]: CDTParser initialized [2023-02-17 03:34:19,532 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-memsafety/list1.i [2023-02-17 03:34:20,567 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-17 03:34:20,850 INFO L351 CDTParser]: Found 1 translation units. [2023-02-17 03:34:20,856 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-memsafety/list1.i [2023-02-17 03:34:20,875 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b2b30bc0/d414d5f2a0104099979b55f2853997f3/FLAG6aab70a53 [2023-02-17 03:34:20,890 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b2b30bc0/d414d5f2a0104099979b55f2853997f3 [2023-02-17 03:34:20,892 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-17 03:34:20,893 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-17 03:34:20,894 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-17 03:34:20,894 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-17 03:34:20,897 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-17 03:34:20,897 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 03:34:20" (1/1) ... [2023-02-17 03:34:20,898 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ea430cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:34:20, skipping insertion in model container [2023-02-17 03:34:20,898 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 03:34:20" (1/1) ... [2023-02-17 03:34:20,904 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-17 03:34:20,951 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 03:34:21,285 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 03:34:21,293 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-02-17 03:34:21,294 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6cf21d84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:34:21, skipping insertion in model container [2023-02-17 03:34:21,294 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-17 03:34:21,295 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-02-17 03:34:21,297 INFO L158 Benchmark]: Toolchain (without parser) took 403.30ms. Allocated memory is still 132.1MB. Free memory was 98.2MB in the beginning and 84.5MB in the end (delta: 13.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-02-17 03:34:21,298 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 132.1MB. Free memory was 77.2MB in the beginning and 77.0MB in the end (delta: 159.5kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 03:34:21,299 INFO L158 Benchmark]: CACSL2BoogieTranslator took 401.40ms. Allocated memory is still 132.1MB. Free memory was 97.7MB in the beginning and 84.5MB in the end (delta: 13.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-02-17 03:34:21,300 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 132.1MB. Free memory was 77.2MB in the beginning and 77.0MB in the end (delta: 159.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 401.40ms. Allocated memory is still 132.1MB. Free memory was 97.7MB in the beginning and 84.5MB in the end (delta: 13.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1048]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/pthread-memsafety/list1.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 1da30149a66945688e686f90b0d1749d09e30bdcfdeae7b4325d99ddbe3a8206 --- Real Ultimate output --- This is Ultimate 0.2.2-?-26d01a9 [2023-02-17 03:34:23,173 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-17 03:34:23,175 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-17 03:34:23,212 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-17 03:34:23,213 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-17 03:34:23,215 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-17 03:34:23,217 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-17 03:34:23,219 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-17 03:34:23,222 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-17 03:34:23,226 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-17 03:34:23,227 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-17 03:34:23,229 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-17 03:34:23,229 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-17 03:34:23,231 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-17 03:34:23,231 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-17 03:34:23,234 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-17 03:34:23,236 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-17 03:34:23,237 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-17 03:34:23,238 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-17 03:34:23,242 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-17 03:34:23,243 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-17 03:34:23,244 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-17 03:34:23,245 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-17 03:34:23,245 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-17 03:34:23,254 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-17 03:34:23,255 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-17 03:34:23,255 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-17 03:34:23,256 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-17 03:34:23,257 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-17 03:34:23,258 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-17 03:34:23,258 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-17 03:34:23,259 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-17 03:34:23,261 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-17 03:34:23,261 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-17 03:34:23,262 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-17 03:34:23,262 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-17 03:34:23,263 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-17 03:34:23,263 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-17 03:34:23,263 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-17 03:34:23,264 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-17 03:34:23,264 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-17 03:34:23,265 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-02-17 03:34:23,293 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-17 03:34:23,293 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-17 03:34:23,294 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-17 03:34:23,294 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-17 03:34:23,295 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-17 03:34:23,295 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-17 03:34:23,296 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-17 03:34:23,296 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-17 03:34:23,296 INFO L138 SettingsManager]: * Use SBE=true [2023-02-17 03:34:23,296 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-17 03:34:23,297 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-17 03:34:23,297 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-17 03:34:23,297 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-17 03:34:23,298 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-17 03:34:23,298 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-17 03:34:23,298 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-17 03:34:23,298 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-17 03:34:23,298 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-17 03:34:23,298 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-17 03:34:23,298 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-17 03:34:23,298 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-02-17 03:34:23,299 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-02-17 03:34:23,299 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-17 03:34:23,299 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-17 03:34:23,299 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-17 03:34:23,299 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-17 03:34:23,299 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-17 03:34:23,300 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 03:34:23,300 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-17 03:34:23,300 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-17 03:34:23,300 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-02-17 03:34:23,300 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-02-17 03:34:23,300 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-17 03:34:23,301 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-17 03:34:23,301 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-17 03:34:23,301 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-02-17 03:34:23,301 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-17 03:34:23,301 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1da30149a66945688e686f90b0d1749d09e30bdcfdeae7b4325d99ddbe3a8206 [2023-02-17 03:34:23,558 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-17 03:34:23,587 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-17 03:34:23,589 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-17 03:34:23,590 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-17 03:34:23,590 INFO L275 PluginConnector]: CDTParser initialized [2023-02-17 03:34:23,591 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-memsafety/list1.i [2023-02-17 03:34:24,732 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-17 03:34:25,018 INFO L351 CDTParser]: Found 1 translation units. [2023-02-17 03:34:25,021 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-memsafety/list1.i [2023-02-17 03:34:25,031 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4fa9c904/c3c43752d7a34a6a870e4a656eb4eb0a/FLAG703058b90 [2023-02-17 03:34:25,042 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4fa9c904/c3c43752d7a34a6a870e4a656eb4eb0a [2023-02-17 03:34:25,044 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-17 03:34:25,045 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-17 03:34:25,046 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-17 03:34:25,046 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-17 03:34:25,048 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-17 03:34:25,049 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 03:34:25" (1/1) ... [2023-02-17 03:34:25,049 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29875bef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:34:25, skipping insertion in model container [2023-02-17 03:34:25,049 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 03:34:25" (1/1) ... [2023-02-17 03:34:25,053 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-17 03:34:25,083 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 03:34:25,396 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 03:34:25,408 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-02-17 03:34:25,418 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 03:34:25,445 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 03:34:25,451 INFO L203 MainTranslator]: Completed pre-run [2023-02-17 03:34:25,489 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 03:34:25,557 INFO L208 MainTranslator]: Completed translation [2023-02-17 03:34:25,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:34:25 WrapperNode [2023-02-17 03:34:25,558 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-17 03:34:25,559 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-17 03:34:25,559 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-17 03:34:25,559 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-17 03:34:25,564 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:34:25" (1/1) ... [2023-02-17 03:34:25,596 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:34:25" (1/1) ... [2023-02-17 03:34:25,615 INFO L138 Inliner]: procedures = 267, calls = 33, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 74 [2023-02-17 03:34:25,615 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-17 03:34:25,616 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-17 03:34:25,616 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-17 03:34:25,616 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-17 03:34:25,622 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:34:25" (1/1) ... [2023-02-17 03:34:25,623 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:34:25" (1/1) ... [2023-02-17 03:34:25,632 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:34:25" (1/1) ... [2023-02-17 03:34:25,632 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:34:25" (1/1) ... [2023-02-17 03:34:25,645 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:34:25" (1/1) ... [2023-02-17 03:34:25,650 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:34:25" (1/1) ... [2023-02-17 03:34:25,655 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:34:25" (1/1) ... [2023-02-17 03:34:25,660 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:34:25" (1/1) ... [2023-02-17 03:34:25,662 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-17 03:34:25,664 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-17 03:34:25,664 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-17 03:34:25,664 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-17 03:34:25,665 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:34:25" (1/1) ... [2023-02-17 03:34:25,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 03:34:25,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 03:34:25,688 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-17 03:34:25,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-17 03:34:25,741 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-02-17 03:34:25,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-17 03:34:25,742 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-17 03:34:25,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-02-17 03:34:25,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-17 03:34:25,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-02-17 03:34:25,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-17 03:34:25,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-17 03:34:25,744 INFO L130 BoogieDeclarations]: Found specification of procedure delete [2023-02-17 03:34:25,744 INFO L138 BoogieDeclarations]: Found implementation of procedure delete [2023-02-17 03:34:25,744 INFO L130 BoogieDeclarations]: Found specification of procedure build [2023-02-17 03:34:25,744 INFO L138 BoogieDeclarations]: Found implementation of procedure build [2023-02-17 03:34:25,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-17 03:34:25,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-17 03:34:25,745 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2023-02-17 03:34:25,912 INFO L235 CfgBuilder]: Building ICFG [2023-02-17 03:34:25,917 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-17 03:34:26,198 INFO L276 CfgBuilder]: Performing block encoding [2023-02-17 03:34:26,211 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-17 03:34:26,211 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2023-02-17 03:34:26,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 03:34:26 BoogieIcfgContainer [2023-02-17 03:34:26,213 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-17 03:34:26,216 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-17 03:34:26,216 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-17 03:34:26,218 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-17 03:34:26,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.02 03:34:25" (1/3) ... [2023-02-17 03:34:26,220 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@544c203f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 03:34:26, skipping insertion in model container [2023-02-17 03:34:26,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:34:25" (2/3) ... [2023-02-17 03:34:26,220 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@544c203f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 03:34:26, skipping insertion in model container [2023-02-17 03:34:26,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 03:34:26" (3/3) ... [2023-02-17 03:34:26,222 INFO L112 eAbstractionObserver]: Analyzing ICFG list1.i [2023-02-17 03:34:26,234 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-17 03:34:26,234 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 38 error locations. [2023-02-17 03:34:26,234 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-02-17 03:34:26,352 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-02-17 03:34:26,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 152 places, 151 transitions, 318 flow [2023-02-17 03:34:26,430 INFO L130 PetriNetUnfolder]: 6/149 cut-off events. [2023-02-17 03:34:26,432 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-02-17 03:34:26,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158 conditions, 149 events. 6/149 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 373 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 87. Up to 3 conditions per place. [2023-02-17 03:34:26,437 INFO L82 GeneralOperation]: Start removeDead. Operand has 152 places, 151 transitions, 318 flow [2023-02-17 03:34:26,441 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 145 places, 144 transitions, 300 flow [2023-02-17 03:34:26,444 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-02-17 03:34:26,458 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 145 places, 144 transitions, 300 flow [2023-02-17 03:34:26,461 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 145 places, 144 transitions, 300 flow [2023-02-17 03:34:26,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 145 places, 144 transitions, 300 flow [2023-02-17 03:34:26,488 INFO L130 PetriNetUnfolder]: 6/144 cut-off events. [2023-02-17 03:34:26,489 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-02-17 03:34:26,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153 conditions, 144 events. 6/144 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 374 event pairs, 0 based on Foata normal form. 0/101 useless extension candidates. Maximal degree in co-relation 87. Up to 3 conditions per place. [2023-02-17 03:34:26,491 INFO L119 LiptonReduction]: Number of co-enabled transitions 960 [2023-02-17 03:34:26,685 INFO L134 LiptonReduction]: Checked pairs total: 1645 [2023-02-17 03:34:26,686 INFO L136 LiptonReduction]: Total number of compositions: 182 [2023-02-17 03:34:26,699 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-17 03:34:26,705 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@16f73eaa, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-17 03:34:26,705 INFO L358 AbstractCegarLoop]: Starting to check reachability of 69 error locations. [2023-02-17 03:34:26,706 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-02-17 03:34:26,706 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-02-17 03:34:26,707 INFO L201 CegarLoopForPetriNet]: Found error trace [2023-02-17 03:34:26,707 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2023-02-17 03:34:26,707 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2023-02-17 03:34:26,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:34:26,712 INFO L85 PathProgramCache]: Analyzing trace with hash 637, now seen corresponding path program 1 times [2023-02-17 03:34:26,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 03:34:26,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2115689279] [2023-02-17 03:34:26,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:34:26,721 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 03:34:26,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 03:34:26,724 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 03:34:26,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-02-17 03:34:26,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:34:26,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-17 03:34:26,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 03:34:26,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:34:26,801 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 03:34:26,801 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 03:34:26,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2115689279] [2023-02-17 03:34:26,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2115689279] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:34:26,802 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 03:34:26,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-02-17 03:34:26,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289225958] [2023-02-17 03:34:26,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:34:26,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-17 03:34:26,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 03:34:26,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-17 03:34:26,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-17 03:34:26,824 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 333 [2023-02-17 03:34:26,825 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 60 transitions, 132 flow. Second operand has 2 states, 2 states have (on average 145.5) internal successors, (291), 2 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:34:26,826 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-02-17 03:34:26,826 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 333 [2023-02-17 03:34:26,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-02-17 03:34:27,025 INFO L130 PetriNetUnfolder]: 100/235 cut-off events. [2023-02-17 03:34:27,025 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-02-17 03:34:27,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 472 conditions, 235 events. 100/235 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 968 event pairs, 84 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 261. Up to 228 conditions per place. [2023-02-17 03:34:27,028 INFO L137 encePairwiseOnDemand]: 322/333 looper letters, 47 selfloop transitions, 0 changer transitions 0/49 dead transitions. [2023-02-17 03:34:27,029 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 49 transitions, 204 flow [2023-02-17 03:34:27,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-17 03:34:27,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-02-17 03:34:27,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 348 transitions. [2023-02-17 03:34:27,043 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5225225225225225 [2023-02-17 03:34:27,044 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 348 transitions. [2023-02-17 03:34:27,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 348 transitions. [2023-02-17 03:34:27,046 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-17 03:34:27,048 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 348 transitions. [2023-02-17 03:34:27,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 174.0) internal successors, (348), 2 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:34:27,056 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 333.0) internal successors, (999), 3 states have internal predecessors, (999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:34:27,057 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 333.0) internal successors, (999), 3 states have internal predecessors, (999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:34:27,058 INFO L175 Difference]: Start difference. First operand has 62 places, 60 transitions, 132 flow. Second operand 2 states and 348 transitions. [2023-02-17 03:34:27,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 49 transitions, 204 flow [2023-02-17 03:34:27,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 49 transitions, 196 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-02-17 03:34:27,062 INFO L231 Difference]: Finished difference. Result has 49 places, 49 transitions, 102 flow [2023-02-17 03:34:27,064 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=102, PETRI_PLACES=49, PETRI_TRANSITIONS=49} [2023-02-17 03:34:27,067 INFO L288 CegarLoopForPetriNet]: 62 programPoint places, -13 predicate places. [2023-02-17 03:34:27,069 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 49 transitions, 102 flow [2023-02-17 03:34:27,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 145.5) internal successors, (291), 2 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:34:27,069 INFO L201 CegarLoopForPetriNet]: Found error trace [2023-02-17 03:34:27,069 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-02-17 03:34:27,090 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-02-17 03:34:27,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 03:34:27,277 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2023-02-17 03:34:27,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:34:27,278 INFO L85 PathProgramCache]: Analyzing trace with hash 627788, now seen corresponding path program 1 times [2023-02-17 03:34:27,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 03:34:27,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1533329841] [2023-02-17 03:34:27,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:34:27,281 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 03:34:27,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 03:34:27,282 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 03:34:27,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-02-17 03:34:27,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:34:27,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-17 03:34:27,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 03:34:27,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:34:27,404 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 03:34:27,404 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 03:34:27,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1533329841] [2023-02-17 03:34:27,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1533329841] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:34:27,404 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 03:34:27,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-02-17 03:34:27,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987860826] [2023-02-17 03:34:27,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:34:27,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 03:34:27,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 03:34:27,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 03:34:27,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 03:34:27,593 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 333 [2023-02-17 03:34:27,594 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 49 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:34:27,594 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-02-17 03:34:27,594 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 333 [2023-02-17 03:34:27,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-02-17 03:34:27,802 INFO L130 PetriNetUnfolder]: 86/206 cut-off events. [2023-02-17 03:34:27,802 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-02-17 03:34:27,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 411 conditions, 206 events. 86/206 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 846 event pairs, 72 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 408. Up to 199 conditions per place. [2023-02-17 03:34:27,805 INFO L137 encePairwiseOnDemand]: 330/333 looper letters, 44 selfloop transitions, 2 changer transitions 0/48 dead transitions. [2023-02-17 03:34:27,805 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 48 transitions, 192 flow [2023-02-17 03:34:27,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 03:34:27,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-02-17 03:34:27,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 467 transitions. [2023-02-17 03:34:27,807 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4674674674674675 [2023-02-17 03:34:27,807 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 467 transitions. [2023-02-17 03:34:27,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 467 transitions. [2023-02-17 03:34:27,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-17 03:34:27,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 467 transitions. [2023-02-17 03:34:27,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:34:27,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:34:27,812 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:34:27,813 INFO L175 Difference]: Start difference. First operand has 49 places, 49 transitions, 102 flow. Second operand 3 states and 467 transitions. [2023-02-17 03:34:27,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 48 transitions, 192 flow [2023-02-17 03:34:27,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 48 transitions, 192 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-02-17 03:34:27,814 INFO L231 Difference]: Finished difference. Result has 50 places, 48 transitions, 104 flow [2023-02-17 03:34:27,814 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=50, PETRI_TRANSITIONS=48} [2023-02-17 03:34:27,815 INFO L288 CegarLoopForPetriNet]: 62 programPoint places, -12 predicate places. [2023-02-17 03:34:27,815 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 48 transitions, 104 flow [2023-02-17 03:34:27,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:34:27,815 INFO L201 CegarLoopForPetriNet]: Found error trace [2023-02-17 03:34:27,816 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-02-17 03:34:27,838 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-02-17 03:34:28,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 03:34:28,024 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2023-02-17 03:34:28,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:34:28,024 INFO L85 PathProgramCache]: Analyzing trace with hash 627787, now seen corresponding path program 1 times [2023-02-17 03:34:28,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 03:34:28,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1621132000] [2023-02-17 03:34:28,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:34:28,026 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 03:34:28,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 03:34:28,028 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 03:34:28,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-02-17 03:34:28,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:34:28,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-17 03:34:28,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 03:34:28,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:34:28,123 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 03:34:28,124 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 03:34:28,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1621132000] [2023-02-17 03:34:28,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1621132000] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:34:28,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 03:34:28,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-02-17 03:34:28,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800653452] [2023-02-17 03:34:28,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:34:28,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 03:34:28,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 03:34:28,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 03:34:28,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 03:34:28,242 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 333 [2023-02-17 03:34:28,242 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 48 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:34:28,242 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-02-17 03:34:28,242 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 333 [2023-02-17 03:34:28,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-02-17 03:34:28,408 INFO L130 PetriNetUnfolder]: 91/221 cut-off events. [2023-02-17 03:34:28,408 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-02-17 03:34:28,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 447 conditions, 221 events. 91/221 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 947 event pairs, 48 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 443. Up to 136 conditions per place. [2023-02-17 03:34:28,409 INFO L137 encePairwiseOnDemand]: 325/333 looper letters, 49 selfloop transitions, 7 changer transitions 0/58 dead transitions. [2023-02-17 03:34:28,409 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 58 transitions, 239 flow [2023-02-17 03:34:28,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 03:34:28,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-02-17 03:34:28,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 456 transitions. [2023-02-17 03:34:28,412 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45645645645645644 [2023-02-17 03:34:28,413 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 456 transitions. [2023-02-17 03:34:28,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 456 transitions. [2023-02-17 03:34:28,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-17 03:34:28,413 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 456 transitions. [2023-02-17 03:34:28,414 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:34:28,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:34:28,416 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:34:28,416 INFO L175 Difference]: Start difference. First operand has 50 places, 48 transitions, 104 flow. Second operand 3 states and 456 transitions. [2023-02-17 03:34:28,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 58 transitions, 239 flow [2023-02-17 03:34:28,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 58 transitions, 233 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-02-17 03:34:28,434 INFO L231 Difference]: Finished difference. Result has 50 places, 49 transitions, 127 flow [2023-02-17 03:34:28,434 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=127, PETRI_PLACES=50, PETRI_TRANSITIONS=49} [2023-02-17 03:34:28,436 INFO L288 CegarLoopForPetriNet]: 62 programPoint places, -12 predicate places. [2023-02-17 03:34:28,436 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 49 transitions, 127 flow [2023-02-17 03:34:28,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:34:28,436 INFO L201 CegarLoopForPetriNet]: Found error trace [2023-02-17 03:34:28,436 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-02-17 03:34:28,448 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-02-17 03:34:28,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 03:34:28,646 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2023-02-17 03:34:28,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:34:28,648 INFO L85 PathProgramCache]: Analyzing trace with hash 19460969, now seen corresponding path program 1 times [2023-02-17 03:34:28,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 03:34:28,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1310872268] [2023-02-17 03:34:28,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:34:28,651 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 03:34:28,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 03:34:28,653 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 03:34:28,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-02-17 03:34:28,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:34:28,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-17 03:34:28,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 03:34:28,783 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-17 03:34:28,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:34:28,785 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 03:34:28,785 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 03:34:28,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1310872268] [2023-02-17 03:34:28,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1310872268] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:34:28,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 03:34:28,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 03:34:28,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897137166] [2023-02-17 03:34:28,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:34:28,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 03:34:28,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 03:34:28,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 03:34:28,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 03:34:28,905 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 333 [2023-02-17 03:34:28,905 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 49 transitions, 127 flow. Second operand has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:34:28,905 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-02-17 03:34:28,905 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 333 [2023-02-17 03:34:28,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-02-17 03:34:29,079 INFO L130 PetriNetUnfolder]: 90/218 cut-off events. [2023-02-17 03:34:29,080 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-02-17 03:34:29,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 487 conditions, 218 events. 90/218 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 954 event pairs, 36 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 482. Up to 130 conditions per place. [2023-02-17 03:34:29,081 INFO L137 encePairwiseOnDemand]: 325/333 looper letters, 49 selfloop transitions, 7 changer transitions 0/58 dead transitions. [2023-02-17 03:34:29,081 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 58 transitions, 258 flow [2023-02-17 03:34:29,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 03:34:29,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-02-17 03:34:29,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 474 transitions. [2023-02-17 03:34:29,083 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4744744744744745 [2023-02-17 03:34:29,083 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 474 transitions. [2023-02-17 03:34:29,083 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 474 transitions. [2023-02-17 03:34:29,083 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-17 03:34:29,083 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 474 transitions. [2023-02-17 03:34:29,084 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:34:29,086 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:34:29,086 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:34:29,086 INFO L175 Difference]: Start difference. First operand has 50 places, 49 transitions, 127 flow. Second operand 3 states and 474 transitions. [2023-02-17 03:34:29,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 58 transitions, 258 flow [2023-02-17 03:34:29,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 58 transitions, 251 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-02-17 03:34:29,088 INFO L231 Difference]: Finished difference. Result has 50 places, 48 transitions, 132 flow [2023-02-17 03:34:29,088 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=50, PETRI_TRANSITIONS=48} [2023-02-17 03:34:29,088 INFO L288 CegarLoopForPetriNet]: 62 programPoint places, -12 predicate places. [2023-02-17 03:34:29,088 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 48 transitions, 132 flow [2023-02-17 03:34:29,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:34:29,089 INFO L201 CegarLoopForPetriNet]: Found error trace [2023-02-17 03:34:29,089 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-02-17 03:34:29,113 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-02-17 03:34:29,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 03:34:29,297 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2023-02-17 03:34:29,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:34:29,298 INFO L85 PathProgramCache]: Analyzing trace with hash 19460968, now seen corresponding path program 1 times [2023-02-17 03:34:29,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 03:34:29,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [84090767] [2023-02-17 03:34:29,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:34:29,299 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 03:34:29,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 03:34:29,300 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 03:34:29,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-02-17 03:34:29,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:34:29,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-17 03:34:29,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 03:34:29,407 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-17 03:34:29,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:34:29,410 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 03:34:29,410 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 03:34:29,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [84090767] [2023-02-17 03:34:29,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [84090767] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:34:29,411 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 03:34:29,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 03:34:29,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948310864] [2023-02-17 03:34:29,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:34:29,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 03:34:29,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 03:34:29,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 03:34:29,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 03:34:29,564 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 333 [2023-02-17 03:34:29,565 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 48 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 143.33333333333334) internal successors, (430), 3 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:34:29,565 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-02-17 03:34:29,565 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 333 [2023-02-17 03:34:29,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-02-17 03:34:29,775 INFO L130 PetriNetUnfolder]: 91/221 cut-off events. [2023-02-17 03:34:29,775 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-02-17 03:34:29,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 495 conditions, 221 events. 91/221 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 951 event pairs, 77 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 490. Up to 215 conditions per place. [2023-02-17 03:34:29,776 INFO L137 encePairwiseOnDemand]: 330/333 looper letters, 46 selfloop transitions, 2 changer transitions 0/50 dead transitions. [2023-02-17 03:34:29,776 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 50 transitions, 232 flow [2023-02-17 03:34:29,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 03:34:29,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-02-17 03:34:29,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 473 transitions. [2023-02-17 03:34:29,778 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47347347347347346 [2023-02-17 03:34:29,778 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 473 transitions. [2023-02-17 03:34:29,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 473 transitions. [2023-02-17 03:34:29,779 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-17 03:34:29,779 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 473 transitions. [2023-02-17 03:34:29,780 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 157.66666666666666) internal successors, (473), 3 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:34:29,781 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:34:29,782 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:34:29,782 INFO L175 Difference]: Start difference. First operand has 50 places, 48 transitions, 132 flow. Second operand 3 states and 473 transitions. [2023-02-17 03:34:29,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 50 transitions, 232 flow [2023-02-17 03:34:29,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 50 transitions, 218 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-02-17 03:34:29,784 INFO L231 Difference]: Finished difference. Result has 51 places, 49 transitions, 130 flow [2023-02-17 03:34:29,784 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=51, PETRI_TRANSITIONS=49} [2023-02-17 03:34:29,785 INFO L288 CegarLoopForPetriNet]: 62 programPoint places, -11 predicate places. [2023-02-17 03:34:29,785 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 49 transitions, 130 flow [2023-02-17 03:34:29,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.33333333333334) internal successors, (430), 3 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:34:29,786 INFO L201 CegarLoopForPetriNet]: Found error trace [2023-02-17 03:34:29,786 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-02-17 03:34:29,795 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-02-17 03:34:29,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 03:34:29,996 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting buildErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2023-02-17 03:34:29,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:34:29,996 INFO L85 PathProgramCache]: Analyzing trace with hash 603291194, now seen corresponding path program 1 times [2023-02-17 03:34:29,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 03:34:29,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [83594799] [2023-02-17 03:34:29,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:34:29,997 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 03:34:29,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 03:34:29,998 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 03:34:30,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-02-17 03:34:30,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:34:30,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 21 conjunts are in the unsatisfiable core [2023-02-17 03:34:30,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 03:34:30,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:34:30,125 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 03:34:30,125 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 03:34:30,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [83594799] [2023-02-17 03:34:30,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [83594799] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:34:30,126 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 03:34:30,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-17 03:34:30,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169273574] [2023-02-17 03:34:30,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:34:30,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-17 03:34:30,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 03:34:30,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-17 03:34:30,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-17 03:34:30,426 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 333 [2023-02-17 03:34:30,427 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 49 transitions, 130 flow. Second operand has 6 states, 6 states have (on average 135.83333333333334) internal successors, (815), 6 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:34:30,427 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-02-17 03:34:30,427 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 333 [2023-02-17 03:34:30,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-02-17 03:34:30,770 INFO L130 PetriNetUnfolder]: 101/251 cut-off events. [2023-02-17 03:34:30,770 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-02-17 03:34:30,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 536 conditions, 251 events. 101/251 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 1094 event pairs, 76 based on Foata normal form. 0/107 useless extension candidates. Maximal degree in co-relation 530. Up to 210 conditions per place. [2023-02-17 03:34:30,772 INFO L137 encePairwiseOnDemand]: 322/333 looper letters, 49 selfloop transitions, 9 changer transitions 0/60 dead transitions. [2023-02-17 03:34:30,772 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 60 transitions, 268 flow [2023-02-17 03:34:30,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-17 03:34:30,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-02-17 03:34:30,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1004 transitions. [2023-02-17 03:34:30,774 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43071643071643073 [2023-02-17 03:34:30,774 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1004 transitions. [2023-02-17 03:34:30,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1004 transitions. [2023-02-17 03:34:30,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-17 03:34:30,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1004 transitions. [2023-02-17 03:34:30,776 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 143.42857142857142) internal successors, (1004), 7 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:34:30,779 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 333.0) internal successors, (2664), 8 states have internal predecessors, (2664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:34:30,780 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 333.0) internal successors, (2664), 8 states have internal predecessors, (2664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:34:30,780 INFO L175 Difference]: Start difference. First operand has 51 places, 49 transitions, 130 flow. Second operand 7 states and 1004 transitions. [2023-02-17 03:34:30,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 60 transitions, 268 flow [2023-02-17 03:34:30,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 60 transitions, 266 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-02-17 03:34:30,781 INFO L231 Difference]: Finished difference. Result has 58 places, 54 transitions, 179 flow [2023-02-17 03:34:30,782 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=179, PETRI_PLACES=58, PETRI_TRANSITIONS=54} [2023-02-17 03:34:30,782 INFO L288 CegarLoopForPetriNet]: 62 programPoint places, -4 predicate places. [2023-02-17 03:34:30,782 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 54 transitions, 179 flow [2023-02-17 03:34:30,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 135.83333333333334) internal successors, (815), 6 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:34:30,783 INFO L201 CegarLoopForPetriNet]: Found error trace [2023-02-17 03:34:30,783 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:34:30,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-02-17 03:34:30,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 03:34:30,990 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting buildErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2023-02-17 03:34:30,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:34:30,991 INFO L85 PathProgramCache]: Analyzing trace with hash -57764153, now seen corresponding path program 1 times [2023-02-17 03:34:30,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 03:34:30,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [544610229] [2023-02-17 03:34:30,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:34:30,991 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 03:34:30,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 03:34:30,994 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 03:34:31,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-02-17 03:34:31,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:34:31,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-17 03:34:31,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 03:34:31,130 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-17 03:34:31,142 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 03:34:31,143 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2023-02-17 03:34:31,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:34:31,151 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 03:34:31,151 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 03:34:31,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [544610229] [2023-02-17 03:34:31,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [544610229] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:34:31,151 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 03:34:31,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 03:34:31,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716104038] [2023-02-17 03:34:31,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:34:31,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 03:34:31,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 03:34:31,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 03:34:31,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 03:34:31,260 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 333 [2023-02-17 03:34:31,260 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 54 transitions, 179 flow. Second operand has 3 states, 3 states have (on average 132.33333333333334) internal successors, (397), 3 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:34:31,260 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-02-17 03:34:31,260 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 333 [2023-02-17 03:34:31,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-02-17 03:34:31,403 INFO L130 PetriNetUnfolder]: 101/245 cut-off events. [2023-02-17 03:34:31,403 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-02-17 03:34:31,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 574 conditions, 245 events. 101/245 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 1054 event pairs, 37 based on Foata normal form. 6/121 useless extension candidates. Maximal degree in co-relation 566. Up to 152 conditions per place. [2023-02-17 03:34:31,405 INFO L137 encePairwiseOnDemand]: 325/333 looper letters, 55 selfloop transitions, 7 changer transitions 0/63 dead transitions. [2023-02-17 03:34:31,405 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 63 transitions, 322 flow [2023-02-17 03:34:31,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 03:34:31,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-02-17 03:34:31,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 448 transitions. [2023-02-17 03:34:31,406 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44844844844844844 [2023-02-17 03:34:31,406 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 448 transitions. [2023-02-17 03:34:31,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 448 transitions. [2023-02-17 03:34:31,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-17 03:34:31,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 448 transitions. [2023-02-17 03:34:31,407 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:34:31,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:34:31,409 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 333.0) internal successors, (1332), 4 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:34:31,409 INFO L175 Difference]: Start difference. First operand has 58 places, 54 transitions, 179 flow. Second operand 3 states and 448 transitions. [2023-02-17 03:34:31,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 63 transitions, 322 flow [2023-02-17 03:34:31,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 63 transitions, 317 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-02-17 03:34:31,410 INFO L231 Difference]: Finished difference. Result has 56 places, 53 transitions, 186 flow [2023-02-17 03:34:31,411 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=186, PETRI_PLACES=56, PETRI_TRANSITIONS=53} [2023-02-17 03:34:31,411 INFO L288 CegarLoopForPetriNet]: 62 programPoint places, -6 predicate places. [2023-02-17 03:34:31,411 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 53 transitions, 186 flow [2023-02-17 03:34:31,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 132.33333333333334) internal successors, (397), 3 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:34:31,411 INFO L201 CegarLoopForPetriNet]: Found error trace [2023-02-17 03:34:31,411 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:34:31,424 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-02-17 03:34:31,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 03:34:31,625 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting buildErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2023-02-17 03:34:31,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:34:31,625 INFO L85 PathProgramCache]: Analyzing trace with hash -57763943, now seen corresponding path program 1 times [2023-02-17 03:34:31,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 03:34:31,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [308846322] [2023-02-17 03:34:31,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:34:31,626 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 03:34:31,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 03:34:31,627 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 03:34:31,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-02-17 03:34:31,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:34:31,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-17 03:34:31,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 03:34:31,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 03:34:31,851 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-02-17 03:34:31,853 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 03:34:31,854 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2023-02-17 03:34:31,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:34:31,860 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 03:34:31,861 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 03:34:31,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [308846322] [2023-02-17 03:34:31,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [308846322] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:34:31,862 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 03:34:31,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-17 03:34:31,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030563189] [2023-02-17 03:34:31,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:34:31,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-17 03:34:31,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 03:34:31,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-17 03:34:31,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-02-17 03:34:32,177 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 333 [2023-02-17 03:34:32,178 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 53 transitions, 186 flow. Second operand has 6 states, 6 states have (on average 132.16666666666666) internal successors, (793), 6 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:34:32,178 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-02-17 03:34:32,178 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 333 [2023-02-17 03:34:32,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-02-17 03:34:32,362 INFO L130 PetriNetUnfolder]: 93/229 cut-off events. [2023-02-17 03:34:32,362 INFO L131 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2023-02-17 03:34:32,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 546 conditions, 229 events. 93/229 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 992 event pairs, 36 based on Foata normal form. 6/111 useless extension candidates. Maximal degree in co-relation 538. Up to 127 conditions per place. [2023-02-17 03:34:32,364 INFO L137 encePairwiseOnDemand]: 318/333 looper letters, 45 selfloop transitions, 15 changer transitions 0/61 dead transitions. [2023-02-17 03:34:32,364 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 61 transitions, 313 flow [2023-02-17 03:34:32,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-17 03:34:32,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-02-17 03:34:32,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 845 transitions. [2023-02-17 03:34:32,366 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42292292292292294 [2023-02-17 03:34:32,366 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 845 transitions. [2023-02-17 03:34:32,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 845 transitions. [2023-02-17 03:34:32,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-17 03:34:32,366 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 845 transitions. [2023-02-17 03:34:32,367 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 140.83333333333334) internal successors, (845), 6 states have internal predecessors, (845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:34:32,369 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 333.0) internal successors, (2331), 7 states have internal predecessors, (2331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:34:32,369 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 333.0) internal successors, (2331), 7 states have internal predecessors, (2331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:34:32,370 INFO L175 Difference]: Start difference. First operand has 56 places, 53 transitions, 186 flow. Second operand 6 states and 845 transitions. [2023-02-17 03:34:32,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 61 transitions, 313 flow [2023-02-17 03:34:32,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 61 transitions, 299 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-02-17 03:34:32,371 INFO L231 Difference]: Finished difference. Result has 57 places, 49 transitions, 184 flow [2023-02-17 03:34:32,371 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=184, PETRI_PLACES=57, PETRI_TRANSITIONS=49} [2023-02-17 03:34:32,372 INFO L288 CegarLoopForPetriNet]: 62 programPoint places, -5 predicate places. [2023-02-17 03:34:32,372 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 49 transitions, 184 flow [2023-02-17 03:34:32,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 132.16666666666666) internal successors, (793), 6 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:34:32,372 INFO L201 CegarLoopForPetriNet]: Found error trace [2023-02-17 03:34:32,372 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:34:32,387 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-02-17 03:34:32,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 03:34:32,581 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting buildErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2023-02-17 03:34:32,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:34:32,582 INFO L85 PathProgramCache]: Analyzing trace with hash -57764152, now seen corresponding path program 1 times [2023-02-17 03:34:32,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 03:34:32,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [294092671] [2023-02-17 03:34:32,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:34:32,582 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 03:34:32,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 03:34:32,584 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 03:34:32,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-02-17 03:34:32,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:34:32,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-17 03:34:32,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 03:34:32,711 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-17 03:34:32,714 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-17 03:34:32,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 03:34:32,725 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-02-17 03:34:32,728 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 03:34:32,728 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2023-02-17 03:34:32,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:34:32,733 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 03:34:32,733 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 03:34:32,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [294092671] [2023-02-17 03:34:32,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [294092671] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:34:32,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 03:34:32,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 03:34:32,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505506576] [2023-02-17 03:34:32,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:34:32,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-17 03:34:32,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 03:34:32,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-17 03:34:32,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-17 03:34:33,028 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 333 [2023-02-17 03:34:33,029 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 49 transitions, 184 flow. Second operand has 4 states, 4 states have (on average 124.75) internal successors, (499), 4 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:34:33,029 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-02-17 03:34:33,029 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 333 [2023-02-17 03:34:33,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-02-17 03:34:33,233 INFO L130 PetriNetUnfolder]: 93/223 cut-off events. [2023-02-17 03:34:33,233 INFO L131 PetriNetUnfolder]: For 34/34 co-relation queries the response was YES. [2023-02-17 03:34:33,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 556 conditions, 223 events. 93/223 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 941 event pairs, 37 based on Foata normal form. 6/105 useless extension candidates. Maximal degree in co-relation 548. Up to 136 conditions per place. [2023-02-17 03:34:33,235 INFO L137 encePairwiseOnDemand]: 325/333 looper letters, 51 selfloop transitions, 7 changer transitions 0/58 dead transitions. [2023-02-17 03:34:33,235 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 58 transitions, 319 flow [2023-02-17 03:34:33,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-17 03:34:33,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-02-17 03:34:33,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 548 transitions. [2023-02-17 03:34:33,237 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4114114114114114 [2023-02-17 03:34:33,237 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 548 transitions. [2023-02-17 03:34:33,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 548 transitions. [2023-02-17 03:34:33,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-17 03:34:33,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 548 transitions. [2023-02-17 03:34:33,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:34:33,239 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 333.0) internal successors, (1665), 5 states have internal predecessors, (1665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:34:33,240 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 333.0) internal successors, (1665), 5 states have internal predecessors, (1665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:34:33,240 INFO L175 Difference]: Start difference. First operand has 57 places, 49 transitions, 184 flow. Second operand 4 states and 548 transitions. [2023-02-17 03:34:33,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 58 transitions, 319 flow [2023-02-17 03:34:33,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 58 transitions, 295 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-02-17 03:34:33,244 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 172 flow [2023-02-17 03:34:33,257 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=172, PETRI_PLACES=54, PETRI_TRANSITIONS=48} [2023-02-17 03:34:33,258 INFO L288 CegarLoopForPetriNet]: 62 programPoint places, -8 predicate places. [2023-02-17 03:34:33,258 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 172 flow [2023-02-17 03:34:33,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 124.75) internal successors, (499), 4 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:34:33,258 INFO L201 CegarLoopForPetriNet]: Found error trace [2023-02-17 03:34:33,258 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:34:33,271 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-02-17 03:34:33,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 03:34:33,459 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2023-02-17 03:34:33,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:34:33,459 INFO L85 PathProgramCache]: Analyzing trace with hash 323416888, now seen corresponding path program 1 times [2023-02-17 03:34:33,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 03:34:33,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [547316979] [2023-02-17 03:34:33,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:34:33,460 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 03:34:33,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 03:34:33,461 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 03:34:33,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-02-17 03:34:33,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:34:33,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 14 conjunts are in the unsatisfiable core [2023-02-17 03:34:33,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 03:34:33,648 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-17 03:34:33,657 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:34:33,657 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 03:34:33,657 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 03:34:33,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [547316979] [2023-02-17 03:34:33,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [547316979] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:34:33,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 03:34:33,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-17 03:34:33,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989522362] [2023-02-17 03:34:33,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:34:33,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-17 03:34:33,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 03:34:33,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-17 03:34:33,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-17 03:34:33,820 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 333 [2023-02-17 03:34:33,821 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 172 flow. Second operand has 5 states, 5 states have (on average 141.8) internal successors, (709), 5 states have internal predecessors, (709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:34:33,821 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-02-17 03:34:33,821 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 333 [2023-02-17 03:34:33,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-02-17 03:34:33,999 INFO L130 PetriNetUnfolder]: 92/220 cut-off events. [2023-02-17 03:34:33,999 INFO L131 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2023-02-17 03:34:33,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 556 conditions, 220 events. 92/220 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 934 event pairs, 66 based on Foata normal form. 0/98 useless extension candidates. Maximal degree in co-relation 549. Up to 214 conditions per place. [2023-02-17 03:34:34,001 INFO L137 encePairwiseOnDemand]: 330/333 looper letters, 47 selfloop transitions, 2 changer transitions 0/49 dead transitions. [2023-02-17 03:34:34,002 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 49 transitions, 271 flow [2023-02-17 03:34:34,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-17 03:34:34,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-02-17 03:34:34,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 605 transitions. [2023-02-17 03:34:34,004 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4542042042042042 [2023-02-17 03:34:34,004 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 605 transitions. [2023-02-17 03:34:34,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 605 transitions. [2023-02-17 03:34:34,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-02-17 03:34:34,004 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 605 transitions. [2023-02-17 03:34:34,005 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 151.25) internal successors, (605), 4 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:34:34,007 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 333.0) internal successors, (1665), 5 states have internal predecessors, (1665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:34:34,007 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 333.0) internal successors, (1665), 5 states have internal predecessors, (1665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:34:34,007 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 172 flow. Second operand 4 states and 605 transitions. [2023-02-17 03:34:34,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 49 transitions, 271 flow [2023-02-17 03:34:34,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 49 transitions, 263 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-02-17 03:34:34,020 INFO L231 Difference]: Finished difference. Result has 54 places, 47 transitions, 165 flow [2023-02-17 03:34:34,022 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=333, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=165, PETRI_PLACES=54, PETRI_TRANSITIONS=47} [2023-02-17 03:34:34,023 INFO L288 CegarLoopForPetriNet]: 62 programPoint places, -8 predicate places. [2023-02-17 03:34:34,023 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 47 transitions, 165 flow [2023-02-17 03:34:34,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 141.8) internal successors, (709), 5 states have internal predecessors, (709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-17 03:34:34,023 INFO L201 CegarLoopForPetriNet]: Found error trace [2023-02-17 03:34:34,023 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:34:34,035 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2023-02-17 03:34:34,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 03:34:34,233 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting buildErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [buildErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, buildErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 66 more)] === [2023-02-17 03:34:34,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:34:34,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1435990123, now seen corresponding path program 1 times [2023-02-17 03:34:34,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 03:34:34,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [47750826] [2023-02-17 03:34:34,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:34:34,234 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 03:34:34,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 03:34:34,235 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 03:34:34,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-02-17 03:34:34,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:34:34,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 36 conjunts are in the unsatisfiable core [2023-02-17 03:34:34,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 03:34:34,421 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-17 03:34:34,424 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-17 03:34:34,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 03:34:34,434 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-02-17 03:34:34,438 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 03:34:34,438 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2023-02-17 03:34:34,447 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-17 03:34:34,451 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-17 03:34:34,463 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 03:34:34,463 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 19 [2023-02-17 03:34:34,467 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-02-17 03:34:34,475 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:34:34,475 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 03:34:34,748 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 36 [2023-02-17 03:34:34,751 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2023-02-17 03:34:34,755 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 66 [2023-02-17 03:34:34,757 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 110 treesize of output 102 [2023-02-17 03:34:35,284 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 03:34:35,290 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 59 select indices, 59 select index equivalence classes, 0 disjoint index pairs (out of 1711 index pairs), introduced 59 new quantified variables, introduced 1711 case distinctions, treesize of input 1736 treesize of output 15306