./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/ldv-races/race-2_1-container_of.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d 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 ../../../trunk/examples/svcomp/ldv-races/race-2_1-container_of.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 fddded73cca9ade55587111b2e2c843e75dd81397929514bda88fadfc663c7db --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-31 23:45:56,350 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 23:45:56,352 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 23:45:56,395 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 23:45:56,397 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 23:45:56,401 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 23:45:56,403 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 23:45:56,406 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 23:45:56,410 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 23:45:56,414 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 23:45:56,415 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 23:45:56,418 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 23:45:56,418 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 23:45:56,421 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 23:45:56,422 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 23:45:56,426 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 23:45:56,427 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 23:45:56,429 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 23:45:56,430 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 23:45:56,434 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 23:45:56,442 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 23:45:56,443 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 23:45:56,444 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 23:45:56,444 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 23:45:56,451 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 23:45:56,451 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 23:45:56,452 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 23:45:56,454 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 23:45:56,454 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 23:45:56,455 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 23:45:56,455 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 23:45:56,462 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 23:45:56,464 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 23:45:56,466 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 23:45:56,467 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 23:45:56,467 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 23:45:56,468 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 23:45:56,468 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 23:45:56,469 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 23:45:56,469 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 23:45:56,470 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 23:45:56,472 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-31 23:45:56,505 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 23:45:56,505 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 23:45:56,507 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 23:45:56,507 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 23:45:56,508 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 23:45:56,508 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 23:45:56,509 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 23:45:56,509 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 23:45:56,509 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 23:45:56,509 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 23:45:56,510 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 23:45:56,510 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-31 23:45:56,511 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 23:45:56,511 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 23:45:56,511 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 23:45:56,511 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-31 23:45:56,511 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-31 23:45:56,512 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-31 23:45:56,512 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 23:45:56,512 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-31 23:45:56,512 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 23:45:56,513 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 23:45:56,513 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 23:45:56,513 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 23:45:56,513 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 23:45:56,514 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 23:45:56,514 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 23:45:56,514 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 23:45:56,514 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 23:45:56,515 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 23:45:56,515 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 23:45:56,515 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 23:45:56,515 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 23:45:56,516 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 23:45:56,516 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fddded73cca9ade55587111b2e2c843e75dd81397929514bda88fadfc663c7db Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-08-31 23:45:56,854 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 23:45:56,875 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 23:45:56,877 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 23:45:56,879 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 23:45:56,880 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 23:45:56,882 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-2_1-container_of.i [2023-08-31 23:45:58,082 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 23:45:58,423 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 23:45:58,424 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_1-container_of.i [2023-08-31 23:45:58,447 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9330f66bc/dd53a130d0e84a74a7ae01f7f56abdb7/FLAG98a7fa739 [2023-08-31 23:45:58,466 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9330f66bc/dd53a130d0e84a74a7ae01f7f56abdb7 [2023-08-31 23:45:58,468 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 23:45:58,469 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 23:45:58,470 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 23:45:58,472 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 23:45:58,475 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 23:45:58,475 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 11:45:58" (1/1) ... [2023-08-31 23:45:58,476 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27acfbe0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:45:58, skipping insertion in model container [2023-08-31 23:45:58,477 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 11:45:58" (1/1) ... [2023-08-31 23:45:58,482 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 23:45:58,558 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 23:45:59,209 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_1-container_of.i[76077,76090] [2023-08-31 23:45:59,256 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 23:45:59,267 ERROR L324 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) [2023-08-31 23:45:59,269 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4001f96e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:45:59, skipping insertion in model container [2023-08-31 23:45:59,269 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 23:45:59,270 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-08-31 23:45:59,272 INFO L158 Benchmark]: Toolchain (without parser) took 801.55ms. Allocated memory is still 75.5MB. Free memory was 49.5MB in the beginning and 49.6MB in the end (delta: -69.0kB). Peak memory consumption was 19.4MB. Max. memory is 16.1GB. [2023-08-31 23:45:59,272 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 58.7MB. Free memory is still 36.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-31 23:45:59,273 INFO L158 Benchmark]: CACSL2BoogieTranslator took 799.44ms. Allocated memory is still 75.5MB. Free memory was 49.3MB in the beginning and 49.6MB in the end (delta: -290.8kB). Peak memory consumption was 15.2MB. Max. memory is 16.1GB. [2023-08-31 23:45:59,274 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 58.7MB. Free memory is still 36.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 799.44ms. Allocated memory is still 75.5MB. Free memory was 49.3MB in the beginning and 49.6MB in the end (delta: -290.8kB). Peak memory consumption was 15.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1709]: 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 ../../../trunk/examples/svcomp/ldv-races/race-2_1-container_of.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 fddded73cca9ade55587111b2e2c843e75dd81397929514bda88fadfc663c7db --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-31 23:46:00,962 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 23:46:00,965 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 23:46:01,006 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 23:46:01,009 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 23:46:01,012 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 23:46:01,015 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 23:46:01,017 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 23:46:01,019 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 23:46:01,024 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 23:46:01,025 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 23:46:01,027 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 23:46:01,027 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 23:46:01,029 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 23:46:01,031 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 23:46:01,035 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 23:46:01,036 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 23:46:01,039 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 23:46:01,041 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 23:46:01,059 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 23:46:01,060 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 23:46:01,061 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 23:46:01,062 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 23:46:01,063 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 23:46:01,071 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 23:46:01,071 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 23:46:01,072 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 23:46:01,074 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 23:46:01,074 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 23:46:01,075 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 23:46:01,075 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 23:46:01,081 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 23:46:01,083 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 23:46:01,083 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 23:46:01,084 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 23:46:01,084 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 23:46:01,085 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 23:46:01,085 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 23:46:01,085 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 23:46:01,086 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 23:46:01,086 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 23:46:01,088 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-08-31 23:46:01,122 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 23:46:01,122 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 23:46:01,123 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 23:46:01,123 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 23:46:01,124 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 23:46:01,124 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 23:46:01,125 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 23:46:01,125 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 23:46:01,125 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 23:46:01,125 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 23:46:01,126 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 23:46:01,126 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-31 23:46:01,127 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 23:46:01,127 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 23:46:01,127 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 23:46:01,127 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-31 23:46:01,127 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-31 23:46:01,127 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-31 23:46:01,128 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 23:46:01,128 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-31 23:46:01,128 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-08-31 23:46:01,128 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-08-31 23:46:01,128 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 23:46:01,129 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 23:46:01,129 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 23:46:01,129 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 23:46:01,129 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 23:46:01,129 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 23:46:01,130 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 23:46:01,130 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 23:46:01,130 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-08-31 23:46:01,130 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-08-31 23:46:01,130 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 23:46:01,131 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 23:46:01,131 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 23:46:01,131 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-08-31 23:46:01,131 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 23:46:01,131 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fddded73cca9ade55587111b2e2c843e75dd81397929514bda88fadfc663c7db Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-08-31 23:46:01,430 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 23:46:01,448 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 23:46:01,450 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 23:46:01,451 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 23:46:01,451 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 23:46:01,453 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-2_1-container_of.i [2023-08-31 23:46:02,570 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 23:46:02,985 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 23:46:02,985 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_1-container_of.i [2023-08-31 23:46:03,004 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c4eaccd2/2ac2029a901d4e48915f551a7a9f5efa/FLAG840d6a896 [2023-08-31 23:46:03,017 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c4eaccd2/2ac2029a901d4e48915f551a7a9f5efa [2023-08-31 23:46:03,020 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 23:46:03,021 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 23:46:03,022 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 23:46:03,022 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 23:46:03,025 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 23:46:03,026 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 11:46:03" (1/1) ... [2023-08-31 23:46:03,027 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e89c85f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:46:03, skipping insertion in model container [2023-08-31 23:46:03,027 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 11:46:03" (1/1) ... [2023-08-31 23:46:03,033 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 23:46:03,102 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 23:46:03,773 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_1-container_of.i[76077,76090] [2023-08-31 23:46:03,854 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 23:46:03,888 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-08-31 23:46:03,897 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 23:46:03,922 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_1-container_of.i[76077,76090] [2023-08-31 23:46:03,931 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 23:46:03,935 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 23:46:03,962 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_1-container_of.i[76077,76090] [2023-08-31 23:46:03,972 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 23:46:04,096 INFO L208 MainTranslator]: Completed translation [2023-08-31 23:46:04,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:46:04 WrapperNode [2023-08-31 23:46:04,097 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 23:46:04,098 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 23:46:04,098 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 23:46:04,098 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 23:46:04,104 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:46:04" (1/1) ... [2023-08-31 23:46:04,128 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:46:04" (1/1) ... [2023-08-31 23:46:04,160 INFO L138 Inliner]: procedures = 486, calls = 46, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 132 [2023-08-31 23:46:04,161 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 23:46:04,162 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 23:46:04,162 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 23:46:04,162 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 23:46:04,169 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:46:04" (1/1) ... [2023-08-31 23:46:04,170 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:46:04" (1/1) ... [2023-08-31 23:46:04,175 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:46:04" (1/1) ... [2023-08-31 23:46:04,180 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:46:04" (1/1) ... [2023-08-31 23:46:04,222 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:46:04" (1/1) ... [2023-08-31 23:46:04,224 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:46:04" (1/1) ... [2023-08-31 23:46:04,230 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:46:04" (1/1) ... [2023-08-31 23:46:04,233 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:46:04" (1/1) ... [2023-08-31 23:46:04,239 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 23:46:04,240 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 23:46:04,240 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 23:46:04,240 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 23:46:04,241 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:46:04" (1/1) ... [2023-08-31 23:46:04,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 23:46:04,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 23:46:04,269 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) [2023-08-31 23:46:04,273 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 [2023-08-31 23:46:04,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 23:46:04,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-08-31 23:46:04,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-08-31 23:46:04,299 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-31 23:46:04,300 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 23:46:04,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-31 23:46:04,300 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 23:46:04,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 23:46:04,300 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-08-31 23:46:04,300 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2023-08-31 23:46:04,300 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2023-08-31 23:46:04,301 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 23:46:04,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-08-31 23:46:04,302 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-31 23:46:04,586 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 23:46:04,589 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 23:46:05,081 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 23:46:05,089 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 23:46:05,089 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-31 23:46:05,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 11:46:05 BoogieIcfgContainer [2023-08-31 23:46:05,091 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 23:46:05,094 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 23:46:05,094 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 23:46:05,097 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 23:46:05,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 11:46:03" (1/3) ... [2023-08-31 23:46:05,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40c242e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 11:46:05, skipping insertion in model container [2023-08-31 23:46:05,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:46:04" (2/3) ... [2023-08-31 23:46:05,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40c242e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 11:46:05, skipping insertion in model container [2023-08-31 23:46:05,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 11:46:05" (3/3) ... [2023-08-31 23:46:05,099 INFO L112 eAbstractionObserver]: Analyzing ICFG race-2_1-container_of.i [2023-08-31 23:46:05,115 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 23:46:05,116 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 45 error locations. [2023-08-31 23:46:05,116 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 23:46:05,204 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-31 23:46:05,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 219 places, 221 transitions, 458 flow [2023-08-31 23:46:05,317 INFO L130 PetriNetUnfolder]: 10/271 cut-off events. [2023-08-31 23:46:05,318 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-31 23:46:05,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 280 conditions, 271 events. 10/271 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 685 event pairs, 0 based on Foata normal form. 0/195 useless extension candidates. Maximal degree in co-relation 155. Up to 4 conditions per place. [2023-08-31 23:46:05,323 INFO L82 GeneralOperation]: Start removeDead. Operand has 219 places, 221 transitions, 458 flow [2023-08-31 23:46:05,329 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 217 places, 219 transitions, 450 flow [2023-08-31 23:46:05,333 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:46:05,340 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 217 places, 219 transitions, 450 flow [2023-08-31 23:46:05,343 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 217 places, 219 transitions, 450 flow [2023-08-31 23:46:05,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 217 places, 219 transitions, 450 flow [2023-08-31 23:46:05,388 INFO L130 PetriNetUnfolder]: 10/271 cut-off events. [2023-08-31 23:46:05,389 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-31 23:46:05,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 280 conditions, 271 events. 10/271 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 685 event pairs, 0 based on Foata normal form. 0/195 useless extension candidates. Maximal degree in co-relation 155. Up to 4 conditions per place. [2023-08-31 23:46:05,393 INFO L119 LiptonReduction]: Number of co-enabled transitions 5880 [2023-08-31 23:46:48,034 WARN L222 SmtUtils]: Spent 5.70s on a formula simplification. DAG size of input: 147 DAG size of output: 139 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 23:47:09,063 WARN L222 SmtUtils]: Spent 10.29s on a formula simplification that was a NOOP. DAG size: 216 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 23:47:20,356 WARN L222 SmtUtils]: Spent 11.29s on a formula simplification that was a NOOP. DAG size: 216 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 23:47:29,376 WARN L222 SmtUtils]: Spent 9.02s on a formula simplification that was a NOOP. DAG size: 216 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 23:47:39,080 WARN L222 SmtUtils]: Spent 9.70s on a formula simplification that was a NOOP. DAG size: 216 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 23:48:01,815 WARN L222 SmtUtils]: Spent 19.47s on a formula simplification. DAG size of input: 248 DAG size of output: 231 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 23:48:10,947 WARN L222 SmtUtils]: Spent 9.13s on a formula simplification that was a NOOP. DAG size: 225 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 23:48:36,104 WARN L222 SmtUtils]: Spent 25.15s on a formula simplification. DAG size of input: 254 DAG size of output: 243 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 23:48:49,027 WARN L222 SmtUtils]: Spent 12.92s on a formula simplification that was a NOOP. DAG size: 226 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 23:50:44,785 WARN L222 SmtUtils]: Spent 1.93m on a formula simplification. DAG size of input: 293 DAG size of output: 272 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 23:51:38,139 WARN L222 SmtUtils]: Spent 53.35s on a formula simplification that was a NOOP. DAG size: 259 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 23:53:34,558 WARN L222 SmtUtils]: Spent 1.94m on a formula simplification. DAG size of input: 299 DAG size of output: 278 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 23:54:52,919 WARN L222 SmtUtils]: Spent 1.31m on a formula simplification that was a NOOP. DAG size: 265 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 23:54:53,303 INFO L134 LiptonReduction]: Checked pairs total: 22744 [2023-08-31 23:54:53,303 INFO L136 LiptonReduction]: Total number of compositions: 254 [2023-08-31 23:54:53,316 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-31 23:54:53,320 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;@191beba6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:54:53,320 INFO L358 AbstractCegarLoop]: Starting to check reachability of 59 error locations. [2023-08-31 23:54:53,322 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-08-31 23:54:53,322 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:54:53,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:54:53,323 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-31 23:54:53,324 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-31 23:54:53,328 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:54:53,328 INFO L85 PathProgramCache]: Analyzing trace with hash 763, now seen corresponding path program 1 times [2023-08-31 23:54:53,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:54:53,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1673842602] [2023-08-31 23:54:53,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:54:53,340 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 [2023-08-31 23:54:53,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:54:53,349 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) [2023-08-31 23:54:53,352 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 [2023-08-31 23:54:53,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:54:53,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2023-08-31 23:54:53,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:54:53,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:54:53,471 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:54:53,471 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:54:53,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1673842602] [2023-08-31 23:54:53,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1673842602] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:54:53,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:54:53,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-31 23:54:53,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857197015] [2023-08-31 23:54:53,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:54:53,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-31 23:54:53,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:54:53,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-31 23:54:53,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-31 23:54:53,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 475 [2023-08-31 23:54:53,528 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 84 transitions, 180 flow. Second operand has 2 states, 2 states have (on average 205.5) internal successors, (411), 2 states have internal predecessors, (411), 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) [2023-08-31 23:54:53,528 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:54:53,528 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 475 [2023-08-31 23:54:53,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:54:54,948 INFO L130 PetriNetUnfolder]: 778/2031 cut-off events. [2023-08-31 23:54:54,949 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2023-08-31 23:54:54,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3381 conditions, 2031 events. 778/2031 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 16970 event pairs, 777 based on Foata normal form. 0/1175 useless extension candidates. Maximal degree in co-relation 3235. Up to 1326 conditions per place. [2023-08-31 23:54:54,965 INFO L137 encePairwiseOnDemand]: 457/475 looper letters, 44 selfloop transitions, 0 changer transitions 0/66 dead transitions. [2023-08-31 23:54:54,965 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 66 transitions, 232 flow [2023-08-31 23:54:54,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-31 23:54:54,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-31 23:54:54,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 472 transitions. [2023-08-31 23:54:54,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4968421052631579 [2023-08-31 23:54:54,981 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 472 transitions. [2023-08-31 23:54:54,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 472 transitions. [2023-08-31 23:54:54,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:54:54,986 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 472 transitions. [2023-08-31 23:54:54,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 236.0) internal successors, (472), 2 states have internal predecessors, (472), 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) [2023-08-31 23:54:54,994 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 475.0) internal successors, (1425), 3 states have internal predecessors, (1425), 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) [2023-08-31 23:54:54,994 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 475.0) internal successors, (1425), 3 states have internal predecessors, (1425), 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) [2023-08-31 23:54:54,996 INFO L175 Difference]: Start difference. First operand has 86 places, 84 transitions, 180 flow. Second operand 2 states and 472 transitions. [2023-08-31 23:54:54,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 66 transitions, 232 flow [2023-08-31 23:54:55,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 66 transitions, 224 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-31 23:54:55,002 INFO L231 Difference]: Finished difference. Result has 68 places, 66 transitions, 136 flow [2023-08-31 23:54:55,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=136, PETRI_PLACES=68, PETRI_TRANSITIONS=66} [2023-08-31 23:54:55,007 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -18 predicate places. [2023-08-31 23:54:55,007 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 66 transitions, 136 flow [2023-08-31 23:54:55,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 205.5) internal successors, (411), 2 states have internal predecessors, (411), 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) [2023-08-31 23:54:55,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:54:55,008 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-31 23:54:55,024 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 (2)] Ended with exit code 0 [2023-08-31 23:54:55,218 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 [2023-08-31 23:54:55,219 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-31 23:54:55,227 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:54:55,227 INFO L85 PathProgramCache]: Analyzing trace with hash 24726, now seen corresponding path program 1 times [2023-08-31 23:54:55,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:54:55,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1546503711] [2023-08-31 23:54:55,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:54:55,229 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 [2023-08-31 23:54:55,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:54:55,230 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) [2023-08-31 23:54:55,234 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 [2023-08-31 23:54:55,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:54:55,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-31 23:54:55,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:54:55,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:54:55,400 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:54:55,400 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:54:55,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1546503711] [2023-08-31 23:54:55,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1546503711] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:54:55,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:54:55,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-31 23:54:55,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147817906] [2023-08-31 23:54:55,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:54:55,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:54:55,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:54:55,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:54:55,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:54:55,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 475 [2023-08-31 23:54:55,419 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 66 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 201.66666666666666) internal successors, (605), 3 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) [2023-08-31 23:54:55,420 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:54:55,420 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 475 [2023-08-31 23:54:55,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:54:56,837 INFO L130 PetriNetUnfolder]: 777/1572 cut-off events. [2023-08-31 23:54:56,838 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-31 23:54:56,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2916 conditions, 1572 events. 777/1572 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 9986 event pairs, 777 based on Foata normal form. 0/1010 useless extension candidates. Maximal degree in co-relation 2913. Up to 1321 conditions per place. [2023-08-31 23:54:56,846 INFO L137 encePairwiseOnDemand]: 471/475 looper letters, 54 selfloop transitions, 1 changer transitions 1/78 dead transitions. [2023-08-31 23:54:56,846 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 78 transitions, 272 flow [2023-08-31 23:54:56,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:54:56,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:54:56,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 662 transitions. [2023-08-31 23:54:56,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46456140350877195 [2023-08-31 23:54:56,851 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 662 transitions. [2023-08-31 23:54:56,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 662 transitions. [2023-08-31 23:54:56,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:54:56,852 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 662 transitions. [2023-08-31 23:54:56,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 220.66666666666666) internal successors, (662), 3 states have internal predecessors, (662), 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) [2023-08-31 23:54:56,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 475.0) internal successors, (1900), 4 states have internal predecessors, (1900), 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) [2023-08-31 23:54:56,858 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 475.0) internal successors, (1900), 4 states have internal predecessors, (1900), 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) [2023-08-31 23:54:56,858 INFO L175 Difference]: Start difference. First operand has 68 places, 66 transitions, 136 flow. Second operand 3 states and 662 transitions. [2023-08-31 23:54:56,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 78 transitions, 272 flow [2023-08-31 23:54:56,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 78 transitions, 272 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-31 23:54:56,860 INFO L231 Difference]: Finished difference. Result has 71 places, 66 transitions, 145 flow [2023-08-31 23:54:56,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=145, PETRI_PLACES=71, PETRI_TRANSITIONS=66} [2023-08-31 23:54:56,861 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -15 predicate places. [2023-08-31 23:54:56,861 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 66 transitions, 145 flow [2023-08-31 23:54:56,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 201.66666666666666) internal successors, (605), 3 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) [2023-08-31 23:54:56,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:54:56,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-31 23:54:56,882 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 [2023-08-31 23:54:57,073 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 [2023-08-31 23:54:57,074 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-31 23:54:57,074 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:54:57,075 INFO L85 PathProgramCache]: Analyzing trace with hash 763231, now seen corresponding path program 1 times [2023-08-31 23:54:57,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:54:57,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1057526075] [2023-08-31 23:54:57,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:54:57,076 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 [2023-08-31 23:54:57,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:54:57,077 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) [2023-08-31 23:54:57,080 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 [2023-08-31 23:54:57,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:54:57,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-31 23:54:57,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:54:57,245 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 7 [2023-08-31 23:54:57,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:54:57,256 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:54:57,257 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:54:57,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1057526075] [2023-08-31 23:54:57,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1057526075] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:54:57,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:54:57,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-31 23:54:57,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812389161] [2023-08-31 23:54:57,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:54:57,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:54:57,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:54:57,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:54:57,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:54:57,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 475 [2023-08-31 23:54:57,626 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 66 transitions, 145 flow. Second operand has 3 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 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) [2023-08-31 23:54:57,626 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:54:57,626 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 475 [2023-08-31 23:54:57,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:54:58,691 INFO L130 PetriNetUnfolder]: 777/1904 cut-off events. [2023-08-31 23:54:58,692 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-08-31 23:54:58,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3335 conditions, 1904 events. 777/1904 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 14683 event pairs, 687 based on Foata normal form. 0/1160 useless extension candidates. Maximal degree in co-relation 3330. Up to 1181 conditions per place. [2023-08-31 23:54:58,702 INFO L137 encePairwiseOnDemand]: 468/475 looper letters, 48 selfloop transitions, 5 changer transitions 0/73 dead transitions. [2023-08-31 23:54:58,702 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 73 transitions, 265 flow [2023-08-31 23:54:58,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:54:58,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:54:58,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 619 transitions. [2023-08-31 23:54:58,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4343859649122807 [2023-08-31 23:54:58,706 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 619 transitions. [2023-08-31 23:54:58,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 619 transitions. [2023-08-31 23:54:58,707 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:54:58,707 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 619 transitions. [2023-08-31 23:54:58,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 206.33333333333334) internal successors, (619), 3 states have internal predecessors, (619), 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) [2023-08-31 23:54:58,711 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 475.0) internal successors, (1900), 4 states have internal predecessors, (1900), 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) [2023-08-31 23:54:58,719 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 475.0) internal successors, (1900), 4 states have internal predecessors, (1900), 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) [2023-08-31 23:54:58,720 INFO L175 Difference]: Start difference. First operand has 71 places, 66 transitions, 145 flow. Second operand 3 states and 619 transitions. [2023-08-31 23:54:58,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 73 transitions, 265 flow [2023-08-31 23:54:58,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 73 transitions, 264 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 23:54:58,723 INFO L231 Difference]: Finished difference. Result has 70 places, 64 transitions, 150 flow [2023-08-31 23:54:58,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=70, PETRI_TRANSITIONS=64} [2023-08-31 23:54:58,725 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -16 predicate places. [2023-08-31 23:54:58,725 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 64 transitions, 150 flow [2023-08-31 23:54:58,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 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) [2023-08-31 23:54:58,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:54:58,728 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-31 23:54:58,743 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 [2023-08-31 23:54:58,939 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 [2023-08-31 23:54:58,940 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-31 23:54:58,940 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:54:58,940 INFO L85 PathProgramCache]: Analyzing trace with hash 763232, now seen corresponding path program 1 times [2023-08-31 23:54:58,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:54:58,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [327764698] [2023-08-31 23:54:58,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:54:58,941 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 [2023-08-31 23:54:58,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:54:58,943 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) [2023-08-31 23:54:58,946 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 [2023-08-31 23:54:59,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:54:59,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-31 23:54:59,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:54:59,092 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 [2023-08-31 23:54:59,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:54:59,117 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:54:59,117 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:54:59,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [327764698] [2023-08-31 23:54:59,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [327764698] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:54:59,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:54:59,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-31 23:54:59,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776753097] [2023-08-31 23:54:59,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:54:59,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:54:59,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:54:59,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:54:59,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:54:59,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 475 [2023-08-31 23:54:59,471 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 64 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 196.0) internal successors, (588), 3 states have internal predecessors, (588), 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) [2023-08-31 23:54:59,471 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:54:59,471 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 475 [2023-08-31 23:54:59,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:55:00,696 INFO L130 PetriNetUnfolder]: 597/1426 cut-off events. [2023-08-31 23:55:00,696 INFO L131 PetriNetUnfolder]: For 36/36 co-relation queries the response was YES. [2023-08-31 23:55:00,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2595 conditions, 1426 events. 597/1426 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 10140 event pairs, 357 based on Foata normal form. 29/963 useless extension candidates. Maximal degree in co-relation 2590. Up to 617 conditions per place. [2023-08-31 23:55:00,703 INFO L137 encePairwiseOnDemand]: 465/475 looper letters, 53 selfloop transitions, 6 changer transitions 0/79 dead transitions. [2023-08-31 23:55:00,703 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 79 transitions, 300 flow [2023-08-31 23:55:00,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:55:00,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:55:00,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 648 transitions. [2023-08-31 23:55:00,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45473684210526316 [2023-08-31 23:55:00,706 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 648 transitions. [2023-08-31 23:55:00,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 648 transitions. [2023-08-31 23:55:00,706 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:55:00,706 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 648 transitions. [2023-08-31 23:55:00,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 216.0) internal successors, (648), 3 states have internal predecessors, (648), 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) [2023-08-31 23:55:00,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 475.0) internal successors, (1900), 4 states have internal predecessors, (1900), 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) [2023-08-31 23:55:00,711 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 475.0) internal successors, (1900), 4 states have internal predecessors, (1900), 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) [2023-08-31 23:55:00,711 INFO L175 Difference]: Start difference. First operand has 70 places, 64 transitions, 150 flow. Second operand 3 states and 648 transitions. [2023-08-31 23:55:00,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 79 transitions, 300 flow [2023-08-31 23:55:00,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 79 transitions, 288 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 23:55:00,713 INFO L231 Difference]: Finished difference. Result has 71 places, 65 transitions, 170 flow [2023-08-31 23:55:00,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=170, PETRI_PLACES=71, PETRI_TRANSITIONS=65} [2023-08-31 23:55:00,714 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -15 predicate places. [2023-08-31 23:55:00,722 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 65 transitions, 170 flow [2023-08-31 23:55:00,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 196.0) internal successors, (588), 3 states have internal predecessors, (588), 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) [2023-08-31 23:55:00,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:55:00,723 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-31 23:55:00,734 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 (5)] Ended with exit code 0 [2023-08-31 23:55:00,933 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 [2023-08-31 23:55:00,934 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-31 23:55:00,934 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:55:00,934 INFO L85 PathProgramCache]: Analyzing trace with hash 763667, now seen corresponding path program 1 times [2023-08-31 23:55:00,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:55:00,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1416468739] [2023-08-31 23:55:00,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:55:00,937 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 [2023-08-31 23:55:00,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:55:00,938 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) [2023-08-31 23:55:00,941 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 [2023-08-31 23:55:01,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:55:01,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-31 23:55:01,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:55:01,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:55:01,126 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 [2023-08-31 23:55:01,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:55:01,156 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:55:01,156 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:55:01,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1416468739] [2023-08-31 23:55:01,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1416468739] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:55:01,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:55:01,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-31 23:55:01,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991179253] [2023-08-31 23:55:01,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:55:01,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:55:01,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:55:01,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:55:01,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:55:01,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 475 [2023-08-31 23:55:01,466 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 65 transitions, 170 flow. Second operand has 3 states, 3 states have (on average 203.0) internal successors, (609), 3 states have internal predecessors, (609), 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) [2023-08-31 23:55:01,466 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:55:01,466 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 475 [2023-08-31 23:55:01,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:55:02,498 INFO L130 PetriNetUnfolder]: 588/1384 cut-off events. [2023-08-31 23:55:02,499 INFO L131 PetriNetUnfolder]: For 83/83 co-relation queries the response was YES. [2023-08-31 23:55:02,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2732 conditions, 1384 events. 588/1384 cut-off events. For 83/83 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 9690 event pairs, 588 based on Foata normal form. 0/903 useless extension candidates. Maximal degree in co-relation 2726. Up to 1016 conditions per place. [2023-08-31 23:55:02,507 INFO L137 encePairwiseOnDemand]: 471/475 looper letters, 40 selfloop transitions, 2 changer transitions 0/63 dead transitions. [2023-08-31 23:55:02,507 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 63 transitions, 250 flow [2023-08-31 23:55:02,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:55:02,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:55:02,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 649 transitions. [2023-08-31 23:55:02,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4554385964912281 [2023-08-31 23:55:02,512 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 649 transitions. [2023-08-31 23:55:02,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 649 transitions. [2023-08-31 23:55:02,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:55:02,512 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 649 transitions. [2023-08-31 23:55:02,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 216.33333333333334) internal successors, (649), 3 states have internal predecessors, (649), 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) [2023-08-31 23:55:02,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 475.0) internal successors, (1900), 4 states have internal predecessors, (1900), 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) [2023-08-31 23:55:02,517 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 475.0) internal successors, (1900), 4 states have internal predecessors, (1900), 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) [2023-08-31 23:55:02,517 INFO L175 Difference]: Start difference. First operand has 71 places, 65 transitions, 170 flow. Second operand 3 states and 649 transitions. [2023-08-31 23:55:02,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 63 transitions, 250 flow [2023-08-31 23:55:02,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 63 transitions, 244 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 23:55:02,522 INFO L231 Difference]: Finished difference. Result has 70 places, 63 transitions, 164 flow [2023-08-31 23:55:02,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=164, PETRI_PLACES=70, PETRI_TRANSITIONS=63} [2023-08-31 23:55:02,525 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -16 predicate places. [2023-08-31 23:55:02,525 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 63 transitions, 164 flow [2023-08-31 23:55:02,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 203.0) internal successors, (609), 3 states have internal predecessors, (609), 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) [2023-08-31 23:55:02,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:55:02,526 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-31 23:55:02,545 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 [2023-08-31 23:55:02,738 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 [2023-08-31 23:55:02,739 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-31 23:55:02,739 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:55:02,739 INFO L85 PathProgramCache]: Analyzing trace with hash 763666, now seen corresponding path program 1 times [2023-08-31 23:55:02,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:55:02,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [198008988] [2023-08-31 23:55:02,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:55:02,740 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 [2023-08-31 23:55:02,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:55:02,741 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) [2023-08-31 23:55:02,742 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 [2023-08-31 23:55:02,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:55:02,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-31 23:55:02,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:55:02,920 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-08-31 23:55:02,920 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 19 treesize of output 27 [2023-08-31 23:55:02,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:55:02,952 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:55:02,952 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:55:02,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [198008988] [2023-08-31 23:55:02,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [198008988] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:55:02,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:55:02,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-31 23:55:02,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865033667] [2023-08-31 23:55:02,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:55:02,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:55:02,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:55:02,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:55:02,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:55:03,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 475 [2023-08-31 23:55:03,225 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 63 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 202.0) internal successors, (606), 3 states have internal predecessors, (606), 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) [2023-08-31 23:55:03,225 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:55:03,225 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 475 [2023-08-31 23:55:03,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:55:04,473 INFO L130 PetriNetUnfolder]: 579/1366 cut-off events. [2023-08-31 23:55:04,473 INFO L131 PetriNetUnfolder]: For 83/83 co-relation queries the response was YES. [2023-08-31 23:55:04,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2583 conditions, 1366 events. 579/1366 cut-off events. For 83/83 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 9570 event pairs, 489 based on Foata normal form. 0/899 useless extension candidates. Maximal degree in co-relation 2577. Up to 832 conditions per place. [2023-08-31 23:55:04,480 INFO L137 encePairwiseOnDemand]: 464/475 looper letters, 45 selfloop transitions, 9 changer transitions 0/75 dead transitions. [2023-08-31 23:55:04,480 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 75 transitions, 296 flow [2023-08-31 23:55:04,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:55:04,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:55:04,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 659 transitions. [2023-08-31 23:55:04,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4624561403508772 [2023-08-31 23:55:04,483 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 659 transitions. [2023-08-31 23:55:04,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 659 transitions. [2023-08-31 23:55:04,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:55:04,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 659 transitions. [2023-08-31 23:55:04,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 219.66666666666666) internal successors, (659), 3 states have internal predecessors, (659), 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) [2023-08-31 23:55:04,488 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 475.0) internal successors, (1900), 4 states have internal predecessors, (1900), 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) [2023-08-31 23:55:04,488 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 475.0) internal successors, (1900), 4 states have internal predecessors, (1900), 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) [2023-08-31 23:55:04,489 INFO L175 Difference]: Start difference. First operand has 70 places, 63 transitions, 164 flow. Second operand 3 states and 659 transitions. [2023-08-31 23:55:04,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 75 transitions, 296 flow [2023-08-31 23:55:04,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 75 transitions, 294 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 23:55:04,491 INFO L231 Difference]: Finished difference. Result has 69 places, 61 transitions, 176 flow [2023-08-31 23:55:04,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=69, PETRI_TRANSITIONS=61} [2023-08-31 23:55:04,492 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -17 predicate places. [2023-08-31 23:55:04,492 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 61 transitions, 176 flow [2023-08-31 23:55:04,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 202.0) internal successors, (606), 3 states have internal predecessors, (606), 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) [2023-08-31 23:55:04,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:55:04,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-31 23:55:04,511 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 [2023-08-31 23:55:04,705 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 [2023-08-31 23:55:04,705 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-31 23:55:04,705 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:55:04,706 INFO L85 PathProgramCache]: Analyzing trace with hash 23674839, now seen corresponding path program 1 times [2023-08-31 23:55:04,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:55:04,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2104331193] [2023-08-31 23:55:04,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:55:04,706 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 [2023-08-31 23:55:04,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:55:04,707 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) [2023-08-31 23:55:04,708 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 [2023-08-31 23:55:04,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:55:04,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-31 23:55:04,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:55:04,839 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 [2023-08-31 23:55:04,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:55:04,905 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:55:04,905 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:55:04,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2104331193] [2023-08-31 23:55:04,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2104331193] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:55:04,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:55:04,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 23:55:04,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047170560] [2023-08-31 23:55:04,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:55:04,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 23:55:04,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:55:04,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 23:55:04,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-31 23:55:05,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 475 [2023-08-31 23:55:05,816 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 61 transitions, 176 flow. Second operand has 5 states, 5 states have (on average 197.8) internal successors, (989), 5 states have internal predecessors, (989), 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) [2023-08-31 23:55:05,816 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:55:05,816 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 475 [2023-08-31 23:55:05,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:55:08,542 INFO L130 PetriNetUnfolder]: 517/1104 cut-off events. [2023-08-31 23:55:08,542 INFO L131 PetriNetUnfolder]: For 139/139 co-relation queries the response was YES. [2023-08-31 23:55:08,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2245 conditions, 1104 events. 517/1104 cut-off events. For 139/139 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 7289 event pairs, 27 based on Foata normal form. 42/893 useless extension candidates. Maximal degree in co-relation 2239. Up to 550 conditions per place. [2023-08-31 23:55:08,549 INFO L137 encePairwiseOnDemand]: 465/475 looper letters, 69 selfloop transitions, 10 changer transitions 2/100 dead transitions. [2023-08-31 23:55:08,549 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 100 transitions, 437 flow [2023-08-31 23:55:08,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 23:55:08,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 23:55:08,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1069 transitions. [2023-08-31 23:55:08,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45010526315789473 [2023-08-31 23:55:08,557 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1069 transitions. [2023-08-31 23:55:08,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1069 transitions. [2023-08-31 23:55:08,558 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:55:08,558 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1069 transitions. [2023-08-31 23:55:08,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 213.8) internal successors, (1069), 5 states have internal predecessors, (1069), 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) [2023-08-31 23:55:08,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 475.0) internal successors, (2850), 6 states have internal predecessors, (2850), 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) [2023-08-31 23:55:08,563 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 475.0) internal successors, (2850), 6 states have internal predecessors, (2850), 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) [2023-08-31 23:55:08,563 INFO L175 Difference]: Start difference. First operand has 69 places, 61 transitions, 176 flow. Second operand 5 states and 1069 transitions. [2023-08-31 23:55:08,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 100 transitions, 437 flow [2023-08-31 23:55:08,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 100 transitions, 415 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 23:55:08,569 INFO L231 Difference]: Finished difference. Result has 73 places, 65 transitions, 215 flow [2023-08-31 23:55:08,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=215, PETRI_PLACES=73, PETRI_TRANSITIONS=65} [2023-08-31 23:55:08,569 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -13 predicate places. [2023-08-31 23:55:08,570 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 65 transitions, 215 flow [2023-08-31 23:55:08,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 197.8) internal successors, (989), 5 states have internal predecessors, (989), 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) [2023-08-31 23:55:08,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:55:08,570 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-31 23:55:08,585 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 [2023-08-31 23:55:08,782 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 [2023-08-31 23:55:08,782 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting my_callbackErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-31 23:55:08,783 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:55:08,783 INFO L85 PathProgramCache]: Analyzing trace with hash 23674838, now seen corresponding path program 1 times [2023-08-31 23:55:08,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:55:08,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1173009073] [2023-08-31 23:55:08,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:55:08,784 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 [2023-08-31 23:55:08,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:55:08,784 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) [2023-08-31 23:55:08,785 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 [2023-08-31 23:55:08,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:55:08,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-31 23:55:08,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:55:08,926 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 7 [2023-08-31 23:55:08,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:55:08,953 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:55:08,953 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:55:08,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1173009073] [2023-08-31 23:55:08,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1173009073] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:55:08,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:55:08,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 23:55:08,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194985209] [2023-08-31 23:55:08,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:55:08,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 23:55:08,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:55:08,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 23:55:08,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-31 23:55:09,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 475 [2023-08-31 23:55:09,536 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 65 transitions, 215 flow. Second operand has 5 states, 5 states have (on average 193.8) internal successors, (969), 5 states have internal predecessors, (969), 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) [2023-08-31 23:55:09,536 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:55:09,536 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 475 [2023-08-31 23:55:09,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:55:12,732 INFO L130 PetriNetUnfolder]: 561/1093 cut-off events. [2023-08-31 23:55:12,732 INFO L131 PetriNetUnfolder]: For 275/275 co-relation queries the response was YES. [2023-08-31 23:55:12,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2558 conditions, 1093 events. 561/1093 cut-off events. For 275/275 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 6467 event pairs, 90 based on Foata normal form. 0/937 useless extension candidates. Maximal degree in co-relation 2550. Up to 648 conditions per place. [2023-08-31 23:55:12,745 INFO L137 encePairwiseOnDemand]: 458/475 looper letters, 70 selfloop transitions, 17 changer transitions 0/105 dead transitions. [2023-08-31 23:55:12,745 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 105 transitions, 478 flow [2023-08-31 23:55:12,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 23:55:12,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 23:55:12,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1249 transitions. [2023-08-31 23:55:12,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4382456140350877 [2023-08-31 23:55:12,749 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1249 transitions. [2023-08-31 23:55:12,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1249 transitions. [2023-08-31 23:55:12,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:55:12,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1249 transitions. [2023-08-31 23:55:12,753 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 208.16666666666666) internal successors, (1249), 6 states have internal predecessors, (1249), 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) [2023-08-31 23:55:12,756 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 475.0) internal successors, (3325), 7 states have internal predecessors, (3325), 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) [2023-08-31 23:55:12,757 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 475.0) internal successors, (3325), 7 states have internal predecessors, (3325), 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) [2023-08-31 23:55:12,757 INFO L175 Difference]: Start difference. First operand has 73 places, 65 transitions, 215 flow. Second operand 6 states and 1249 transitions. [2023-08-31 23:55:12,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 105 transitions, 478 flow [2023-08-31 23:55:12,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 105 transitions, 454 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-08-31 23:55:12,761 INFO L231 Difference]: Finished difference. Result has 79 places, 71 transitions, 293 flow [2023-08-31 23:55:12,761 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=293, PETRI_PLACES=79, PETRI_TRANSITIONS=71} [2023-08-31 23:55:12,762 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -7 predicate places. [2023-08-31 23:55:12,762 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 71 transitions, 293 flow [2023-08-31 23:55:12,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 193.8) internal successors, (969), 5 states have internal predecessors, (969), 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) [2023-08-31 23:55:12,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:55:12,763 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-31 23:55:12,779 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 [2023-08-31 23:55:12,974 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 [2023-08-31 23:55:12,975 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-31 23:55:12,975 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:55:12,975 INFO L85 PathProgramCache]: Analyzing trace with hash 733475908, now seen corresponding path program 1 times [2023-08-31 23:55:12,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:55:12,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1828211908] [2023-08-31 23:55:12,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:55:12,976 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 [2023-08-31 23:55:12,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:55:12,977 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) [2023-08-31 23:55:12,978 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 [2023-08-31 23:55:13,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:55:13,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-31 23:55:13,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:55:13,190 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 28 treesize of output 45 [2023-08-31 23:55:13,273 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 23:55:13,274 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 73 treesize of output 93 [2023-08-31 23:55:13,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:55:13,303 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:55:13,303 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:55:13,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1828211908] [2023-08-31 23:55:13,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1828211908] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:55:13,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:55:13,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 23:55:13,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281195162] [2023-08-31 23:55:13,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:55:13,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:55:13,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:55:13,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:55:13,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:55:13,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 475 [2023-08-31 23:55:13,980 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 71 transitions, 293 flow. Second operand has 3 states, 3 states have (on average 192.33333333333334) internal successors, (577), 3 states have internal predecessors, (577), 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) [2023-08-31 23:55:13,980 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:55:13,980 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 475 [2023-08-31 23:55:13,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:55:16,070 INFO L130 PetriNetUnfolder]: 713/1567 cut-off events. [2023-08-31 23:55:16,071 INFO L131 PetriNetUnfolder]: For 1188/1273 co-relation queries the response was YES. [2023-08-31 23:55:16,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3721 conditions, 1567 events. 713/1567 cut-off events. For 1188/1273 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 10732 event pairs, 426 based on Foata normal form. 7/1283 useless extension candidates. Maximal degree in co-relation 3711. Up to 1022 conditions per place. [2023-08-31 23:55:16,080 INFO L137 encePairwiseOnDemand]: 466/475 looper letters, 52 selfloop transitions, 11 changer transitions 0/84 dead transitions. [2023-08-31 23:55:16,080 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 84 transitions, 469 flow [2023-08-31 23:55:16,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:55:16,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:55:16,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 626 transitions. [2023-08-31 23:55:16,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4392982456140351 [2023-08-31 23:55:16,084 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 626 transitions. [2023-08-31 23:55:16,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 626 transitions. [2023-08-31 23:55:16,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:55:16,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 626 transitions. [2023-08-31 23:55:16,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 208.66666666666666) internal successors, (626), 3 states have internal predecessors, (626), 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) [2023-08-31 23:55:16,088 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 475.0) internal successors, (1900), 4 states have internal predecessors, (1900), 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) [2023-08-31 23:55:16,089 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 475.0) internal successors, (1900), 4 states have internal predecessors, (1900), 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) [2023-08-31 23:55:16,089 INFO L175 Difference]: Start difference. First operand has 79 places, 71 transitions, 293 flow. Second operand 3 states and 626 transitions. [2023-08-31 23:55:16,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 84 transitions, 469 flow [2023-08-31 23:55:16,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 84 transitions, 464 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 23:55:16,092 INFO L231 Difference]: Finished difference. Result has 82 places, 78 transitions, 379 flow [2023-08-31 23:55:16,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=379, PETRI_PLACES=82, PETRI_TRANSITIONS=78} [2023-08-31 23:55:16,093 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -4 predicate places. [2023-08-31 23:55:16,093 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 78 transitions, 379 flow [2023-08-31 23:55:16,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.33333333333334) internal successors, (577), 3 states have internal predecessors, (577), 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) [2023-08-31 23:55:16,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:55:16,094 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-31 23:55:16,110 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 (10)] Ended with exit code 0 [2023-08-31 23:55:16,307 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 [2023-08-31 23:55:16,307 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-31 23:55:16,307 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:55:16,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1262917302, now seen corresponding path program 1 times [2023-08-31 23:55:16,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:55:16,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [781407416] [2023-08-31 23:55:16,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:55:16,308 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 [2023-08-31 23:55:16,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:55:16,309 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) [2023-08-31 23:55:16,311 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 [2023-08-31 23:55:16,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:55:16,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-31 23:55:16,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:55:16,515 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 23:55:16,515 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 23:55:16,516 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 23:55:16,517 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 32 treesize of output 41 [2023-08-31 23:55:16,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:55:16,582 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:55:16,582 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:55:16,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [781407416] [2023-08-31 23:55:16,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [781407416] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:55:16,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:55:16,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 23:55:16,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879405982] [2023-08-31 23:55:16,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:55:16,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:55:16,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:55:16,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:55:16,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:55:17,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 475 [2023-08-31 23:55:17,187 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 78 transitions, 379 flow. Second operand has 3 states, 3 states have (on average 193.0) internal successors, (579), 3 states have internal predecessors, (579), 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) [2023-08-31 23:55:17,187 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:55:17,187 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 475 [2023-08-31 23:55:17,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:55:19,168 INFO L130 PetriNetUnfolder]: 910/1868 cut-off events. [2023-08-31 23:55:19,169 INFO L131 PetriNetUnfolder]: For 2362/2483 co-relation queries the response was YES. [2023-08-31 23:55:19,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5433 conditions, 1868 events. 910/1868 cut-off events. For 2362/2483 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 12422 event pairs, 501 based on Foata normal form. 7/1606 useless extension candidates. Maximal degree in co-relation 5421. Up to 1261 conditions per place. [2023-08-31 23:55:19,177 INFO L137 encePairwiseOnDemand]: 466/475 looper letters, 58 selfloop transitions, 17 changer transitions 0/95 dead transitions. [2023-08-31 23:55:19,178 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 95 transitions, 624 flow [2023-08-31 23:55:19,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:55:19,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:55:19,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 627 transitions. [2023-08-31 23:55:19,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44 [2023-08-31 23:55:19,181 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 627 transitions. [2023-08-31 23:55:19,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 627 transitions. [2023-08-31 23:55:19,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:55:19,182 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 627 transitions. [2023-08-31 23:55:19,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 209.0) internal successors, (627), 3 states have internal predecessors, (627), 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) [2023-08-31 23:55:19,185 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 475.0) internal successors, (1900), 4 states have internal predecessors, (1900), 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) [2023-08-31 23:55:19,186 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 475.0) internal successors, (1900), 4 states have internal predecessors, (1900), 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) [2023-08-31 23:55:19,186 INFO L175 Difference]: Start difference. First operand has 82 places, 78 transitions, 379 flow. Second operand 3 states and 627 transitions. [2023-08-31 23:55:19,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 95 transitions, 624 flow [2023-08-31 23:55:19,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 95 transitions, 592 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 23:55:19,191 INFO L231 Difference]: Finished difference. Result has 84 places, 89 transitions, 511 flow [2023-08-31 23:55:19,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=357, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=511, PETRI_PLACES=84, PETRI_TRANSITIONS=89} [2023-08-31 23:55:19,192 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -2 predicate places. [2023-08-31 23:55:19,192 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 89 transitions, 511 flow [2023-08-31 23:55:19,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 193.0) internal successors, (579), 3 states have internal predecessors, (579), 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) [2023-08-31 23:55:19,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:55:19,193 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-31 23:55:19,205 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 (11)] Forceful destruction successful, exit code 0 [2023-08-31 23:55:19,397 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 [2023-08-31 23:55:19,398 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-31 23:55:19,398 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:55:19,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1276002438, now seen corresponding path program 1 times [2023-08-31 23:55:19,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:55:19,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2058324728] [2023-08-31 23:55:19,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:55:19,399 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 [2023-08-31 23:55:19,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:55:19,400 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) [2023-08-31 23:55:19,403 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 [2023-08-31 23:55:19,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:55:19,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-31 23:55:19,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:55:19,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:55:19,675 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 [2023-08-31 23:55:19,704 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-08-31 23:55:19,704 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 19 treesize of output 27 [2023-08-31 23:55:19,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:55:19,812 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:55:19,812 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:55:19,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2058324728] [2023-08-31 23:55:19,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2058324728] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:55:19,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:55:19,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-31 23:55:19,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962095235] [2023-08-31 23:55:19,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:55:19,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:55:19,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:55:19,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:55:19,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:55:20,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 475 [2023-08-31 23:55:20,279 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 89 transitions, 511 flow. Second operand has 3 states, 3 states have (on average 201.0) internal successors, (603), 3 states have internal predecessors, (603), 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) [2023-08-31 23:55:20,279 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:55:20,279 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 475 [2023-08-31 23:55:20,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:55:21,224 INFO L130 PetriNetUnfolder]: 734/1591 cut-off events. [2023-08-31 23:55:21,224 INFO L131 PetriNetUnfolder]: For 2928/3052 co-relation queries the response was YES. [2023-08-31 23:55:21,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5098 conditions, 1591 events. 734/1591 cut-off events. For 2928/3052 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 10616 event pairs, 380 based on Foata normal form. 0/1355 useless extension candidates. Maximal degree in co-relation 5085. Up to 919 conditions per place. [2023-08-31 23:55:21,236 INFO L137 encePairwiseOnDemand]: 464/475 looper letters, 53 selfloop transitions, 15 changer transitions 0/93 dead transitions. [2023-08-31 23:55:21,236 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 93 transitions, 655 flow [2023-08-31 23:55:21,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:55:21,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:55:21,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 647 transitions. [2023-08-31 23:55:21,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45403508771929824 [2023-08-31 23:55:21,240 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 647 transitions. [2023-08-31 23:55:21,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 647 transitions. [2023-08-31 23:55:21,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:55:21,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 647 transitions. [2023-08-31 23:55:21,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 215.66666666666666) internal successors, (647), 3 states have internal predecessors, (647), 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) [2023-08-31 23:55:21,244 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 475.0) internal successors, (1900), 4 states have internal predecessors, (1900), 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) [2023-08-31 23:55:21,245 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 475.0) internal successors, (1900), 4 states have internal predecessors, (1900), 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) [2023-08-31 23:55:21,245 INFO L175 Difference]: Start difference. First operand has 84 places, 89 transitions, 511 flow. Second operand 3 states and 647 transitions. [2023-08-31 23:55:21,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 93 transitions, 655 flow [2023-08-31 23:55:21,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 93 transitions, 621 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 23:55:21,253 INFO L231 Difference]: Finished difference. Result has 82 places, 85 transitions, 483 flow [2023-08-31 23:55:21,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=453, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=483, PETRI_PLACES=82, PETRI_TRANSITIONS=85} [2023-08-31 23:55:21,254 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -4 predicate places. [2023-08-31 23:55:21,254 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 85 transitions, 483 flow [2023-08-31 23:55:21,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 201.0) internal successors, (603), 3 states have internal predecessors, (603), 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) [2023-08-31 23:55:21,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:55:21,254 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-31 23:55:21,267 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 (12)] Forceful destruction successful, exit code 0 [2023-08-31 23:55:21,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /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 [2023-08-31 23:55:21,465 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-31 23:55:21,465 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:55:21,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1276003531, now seen corresponding path program 1 times [2023-08-31 23:55:21,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:55:21,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [785656313] [2023-08-31 23:55:21,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:55:21,466 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 [2023-08-31 23:55:21,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:55:21,467 INFO L229 MonitoredProcess]: Starting monitored process 13 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) [2023-08-31 23:55:21,470 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 (13)] Waiting until timeout for monitored process [2023-08-31 23:55:21,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:55:21,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-31 23:55:21,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:55:21,634 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 [2023-08-31 23:55:21,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:55:21,711 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:55:21,711 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:55:21,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [785656313] [2023-08-31 23:55:21,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [785656313] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:55:21,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:55:21,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 23:55:21,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551309461] [2023-08-31 23:55:21,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:55:21,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 23:55:21,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:55:21,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 23:55:21,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-31 23:55:22,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 475 [2023-08-31 23:55:22,453 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 85 transitions, 483 flow. Second operand has 5 states, 5 states have (on average 198.2) internal successors, (991), 5 states have internal predecessors, (991), 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) [2023-08-31 23:55:22,453 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:55:22,453 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 475 [2023-08-31 23:55:22,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:55:25,493 INFO L130 PetriNetUnfolder]: 764/1676 cut-off events. [2023-08-31 23:55:25,493 INFO L131 PetriNetUnfolder]: For 2999/3116 co-relation queries the response was YES. [2023-08-31 23:55:25,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5131 conditions, 1676 events. 764/1676 cut-off events. For 2999/3116 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 11596 event pairs, 71 based on Foata normal form. 285/1789 useless extension candidates. Maximal degree in co-relation 5118. Up to 905 conditions per place. [2023-08-31 23:55:25,500 INFO L137 encePairwiseOnDemand]: 467/475 looper letters, 101 selfloop transitions, 8 changer transitions 2/133 dead transitions. [2023-08-31 23:55:25,501 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 133 transitions, 982 flow [2023-08-31 23:55:25,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 23:55:25,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 23:55:25,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1065 transitions. [2023-08-31 23:55:25,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44842105263157894 [2023-08-31 23:55:25,504 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1065 transitions. [2023-08-31 23:55:25,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1065 transitions. [2023-08-31 23:55:25,505 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:55:25,505 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1065 transitions. [2023-08-31 23:55:25,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 213.0) internal successors, (1065), 5 states have internal predecessors, (1065), 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) [2023-08-31 23:55:25,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 475.0) internal successors, (2850), 6 states have internal predecessors, (2850), 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) [2023-08-31 23:55:25,511 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 475.0) internal successors, (2850), 6 states have internal predecessors, (2850), 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) [2023-08-31 23:55:25,511 INFO L175 Difference]: Start difference. First operand has 82 places, 85 transitions, 483 flow. Second operand 5 states and 1065 transitions. [2023-08-31 23:55:25,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 133 transitions, 982 flow [2023-08-31 23:55:25,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 133 transitions, 944 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 23:55:25,521 INFO L231 Difference]: Finished difference. Result has 86 places, 88 transitions, 498 flow [2023-08-31 23:55:25,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=453, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=498, PETRI_PLACES=86, PETRI_TRANSITIONS=88} [2023-08-31 23:55:25,521 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 0 predicate places. [2023-08-31 23:55:25,522 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 88 transitions, 498 flow [2023-08-31 23:55:25,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 198.2) internal successors, (991), 5 states have internal predecessors, (991), 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) [2023-08-31 23:55:25,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:55:25,522 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-31 23:55:25,534 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 (13)] Forceful destruction successful, exit code 0 [2023-08-31 23:55:25,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /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 [2023-08-31 23:55:25,734 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting my_callbackErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-31 23:55:25,734 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:55:25,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1276003530, now seen corresponding path program 1 times [2023-08-31 23:55:25,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:55:25,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1190368456] [2023-08-31 23:55:25,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:55:25,735 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 [2023-08-31 23:55:25,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:55:25,736 INFO L229 MonitoredProcess]: Starting monitored process 14 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) [2023-08-31 23:55:25,739 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 (14)] Waiting until timeout for monitored process [2023-08-31 23:55:25,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:55:25,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-31 23:55:25,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:55:25,910 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 7 [2023-08-31 23:55:25,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:55:25,939 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:55:25,940 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:55:25,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1190368456] [2023-08-31 23:55:25,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1190368456] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:55:25,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:55:25,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 23:55:25,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456371059] [2023-08-31 23:55:25,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:55:25,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 23:55:25,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:55:25,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 23:55:25,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-31 23:55:26,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 475 [2023-08-31 23:55:26,500 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 88 transitions, 498 flow. Second operand has 5 states, 5 states have (on average 194.2) internal successors, (971), 5 states have internal predecessors, (971), 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) [2023-08-31 23:55:26,500 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:55:26,500 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 475 [2023-08-31 23:55:26,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:55:29,676 INFO L130 PetriNetUnfolder]: 1131/2073 cut-off events. [2023-08-31 23:55:29,677 INFO L131 PetriNetUnfolder]: For 3592/3744 co-relation queries the response was YES. [2023-08-31 23:55:29,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7015 conditions, 2073 events. 1131/2073 cut-off events. For 3592/3744 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 12291 event pairs, 210 based on Foata normal form. 190/2105 useless extension candidates. Maximal degree in co-relation 7000. Up to 1117 conditions per place. [2023-08-31 23:55:29,686 INFO L137 encePairwiseOnDemand]: 458/475 looper letters, 101 selfloop transitions, 25 changer transitions 0/143 dead transitions. [2023-08-31 23:55:29,686 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 143 transitions, 1045 flow [2023-08-31 23:55:29,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 23:55:29,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 23:55:29,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1253 transitions. [2023-08-31 23:55:29,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43964912280701757 [2023-08-31 23:55:29,691 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1253 transitions. [2023-08-31 23:55:29,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1253 transitions. [2023-08-31 23:55:29,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:55:29,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1253 transitions. [2023-08-31 23:55:29,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 208.83333333333334) internal successors, (1253), 6 states have internal predecessors, (1253), 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) [2023-08-31 23:55:29,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 475.0) internal successors, (3325), 7 states have internal predecessors, (3325), 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) [2023-08-31 23:55:29,698 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 475.0) internal successors, (3325), 7 states have internal predecessors, (3325), 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) [2023-08-31 23:55:29,698 INFO L175 Difference]: Start difference. First operand has 86 places, 88 transitions, 498 flow. Second operand 6 states and 1253 transitions. [2023-08-31 23:55:29,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 143 transitions, 1045 flow [2023-08-31 23:55:29,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 143 transitions, 1036 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 23:55:29,706 INFO L231 Difference]: Finished difference. Result has 93 places, 96 transitions, 671 flow [2023-08-31 23:55:29,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=489, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=671, PETRI_PLACES=93, PETRI_TRANSITIONS=96} [2023-08-31 23:55:29,707 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 7 predicate places. [2023-08-31 23:55:29,707 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 96 transitions, 671 flow [2023-08-31 23:55:29,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 194.2) internal successors, (971), 5 states have internal predecessors, (971), 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) [2023-08-31 23:55:29,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:55:29,707 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:55:29,721 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 (14)] Forceful destruction successful, exit code 0 [2023-08-31 23:55:29,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /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 [2023-08-31 23:55:29,919 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-31 23:55:29,920 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:55:29,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1812195110, now seen corresponding path program 1 times [2023-08-31 23:55:29,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:55:29,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1384058332] [2023-08-31 23:55:29,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:55:29,921 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 [2023-08-31 23:55:29,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:55:29,922 INFO L229 MonitoredProcess]: Starting monitored process 15 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) [2023-08-31 23:55:29,925 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 (15)] Waiting until timeout for monitored process [2023-08-31 23:55:30,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:55:30,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-31 23:55:30,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:55:30,296 WARN L861 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#data~1#1.base_191| (_ BitVec 32))) (and (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#data~1#1.base_191|) (_ bv0 1)) (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#data~1#1.base_191| (_ bv0 1))))) is different from true [2023-08-31 23:55:30,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:55:30,296 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:55:30,296 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:55:30,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1384058332] [2023-08-31 23:55:30,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1384058332] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:55:30,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:55:30,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 23:55:30,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495527145] [2023-08-31 23:55:30,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:55:30,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 23:55:30,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:55:30,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 23:55:30,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-08-31 23:55:30,629 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 475 [2023-08-31 23:55:30,630 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 96 transitions, 671 flow. Second operand has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 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) [2023-08-31 23:55:30,630 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:55:30,630 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 475 [2023-08-31 23:55:30,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:55:32,281 INFO L130 PetriNetUnfolder]: 1848/3148 cut-off events. [2023-08-31 23:55:32,281 INFO L131 PetriNetUnfolder]: For 7482/7482 co-relation queries the response was YES. [2023-08-31 23:55:32,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11490 conditions, 3148 events. 1848/3148 cut-off events. For 7482/7482 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 17859 event pairs, 757 based on Foata normal form. 0/2854 useless extension candidates. Maximal degree in co-relation 11472. Up to 1526 conditions per place. [2023-08-31 23:55:32,295 INFO L137 encePairwiseOnDemand]: 453/475 looper letters, 84 selfloop transitions, 32 changer transitions 2/125 dead transitions. [2023-08-31 23:55:32,295 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 125 transitions, 1064 flow [2023-08-31 23:55:32,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 23:55:32,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 23:55:32,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 636 transitions. [2023-08-31 23:55:32,298 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33473684210526317 [2023-08-31 23:55:32,298 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 636 transitions. [2023-08-31 23:55:32,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 636 transitions. [2023-08-31 23:55:32,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:55:32,299 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 636 transitions. [2023-08-31 23:55:32,300 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 159.0) internal successors, (636), 4 states have internal predecessors, (636), 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) [2023-08-31 23:55:32,334 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 475.0) internal successors, (2375), 5 states have internal predecessors, (2375), 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) [2023-08-31 23:55:32,335 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 475.0) internal successors, (2375), 5 states have internal predecessors, (2375), 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) [2023-08-31 23:55:32,335 INFO L175 Difference]: Start difference. First operand has 93 places, 96 transitions, 671 flow. Second operand 4 states and 636 transitions. [2023-08-31 23:55:32,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 125 transitions, 1064 flow [2023-08-31 23:55:32,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 125 transitions, 1055 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 23:55:32,362 INFO L231 Difference]: Finished difference. Result has 95 places, 111 transitions, 862 flow [2023-08-31 23:55:32,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=663, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=862, PETRI_PLACES=95, PETRI_TRANSITIONS=111} [2023-08-31 23:55:32,363 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 9 predicate places. [2023-08-31 23:55:32,364 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 111 transitions, 862 flow [2023-08-31 23:55:32,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 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) [2023-08-31 23:55:32,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:55:32,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:55:32,397 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 (15)] Forceful destruction successful, exit code 0 [2023-08-31 23:55:32,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /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 [2023-08-31 23:55:32,565 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-31 23:55:32,565 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:55:32,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1951799817, now seen corresponding path program 1 times [2023-08-31 23:55:32,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:55:32,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [109790178] [2023-08-31 23:55:32,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:55:32,566 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 [2023-08-31 23:55:32,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:55:32,568 INFO L229 MonitoredProcess]: Starting monitored process 16 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) [2023-08-31 23:55:32,571 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 (16)] Waiting until timeout for monitored process [2023-08-31 23:55:32,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:55:32,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-31 23:55:32,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:55:32,834 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 7 [2023-08-31 23:55:32,843 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 [2023-08-31 23:55:32,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:55:32,959 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 [2023-08-31 23:55:32,969 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-08-31 23:55:32,970 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 13 treesize of output 13 [2023-08-31 23:55:32,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:55:32,989 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:55:32,989 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:55:32,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [109790178] [2023-08-31 23:55:33,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [109790178] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:55:33,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:55:33,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 23:55:33,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734110243] [2023-08-31 23:55:33,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:55:33,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 23:55:33,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:55:33,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 23:55:33,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-31 23:55:34,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 475 [2023-08-31 23:55:34,306 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 111 transitions, 862 flow. Second operand has 6 states, 6 states have (on average 190.33333333333334) internal successors, (1142), 6 states have internal predecessors, (1142), 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) [2023-08-31 23:55:34,306 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:55:34,306 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 475 [2023-08-31 23:55:34,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:55:36,601 INFO L130 PetriNetUnfolder]: 1647/2969 cut-off events. [2023-08-31 23:55:36,601 INFO L131 PetriNetUnfolder]: For 8742/8880 co-relation queries the response was YES. [2023-08-31 23:55:36,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12002 conditions, 2969 events. 1647/2969 cut-off events. For 8742/8880 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 18600 event pairs, 514 based on Foata normal form. 26/2798 useless extension candidates. Maximal degree in co-relation 11982. Up to 1585 conditions per place. [2023-08-31 23:55:36,631 INFO L137 encePairwiseOnDemand]: 459/475 looper letters, 102 selfloop transitions, 26 changer transitions 0/154 dead transitions. [2023-08-31 23:55:36,631 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 154 transitions, 1373 flow [2023-08-31 23:55:36,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 23:55:36,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 23:55:36,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1406 transitions. [2023-08-31 23:55:36,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4228571428571429 [2023-08-31 23:55:36,636 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1406 transitions. [2023-08-31 23:55:36,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1406 transitions. [2023-08-31 23:55:36,637 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:55:36,637 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1406 transitions. [2023-08-31 23:55:36,640 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 200.85714285714286) internal successors, (1406), 7 states have internal predecessors, (1406), 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) [2023-08-31 23:55:36,643 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 475.0) internal successors, (3800), 8 states have internal predecessors, (3800), 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) [2023-08-31 23:55:36,644 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 475.0) internal successors, (3800), 8 states have internal predecessors, (3800), 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) [2023-08-31 23:55:36,644 INFO L175 Difference]: Start difference. First operand has 95 places, 111 transitions, 862 flow. Second operand 7 states and 1406 transitions. [2023-08-31 23:55:36,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 154 transitions, 1373 flow [2023-08-31 23:55:36,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 154 transitions, 1287 flow, removed 19 selfloop flow, removed 4 redundant places. [2023-08-31 23:55:36,660 INFO L231 Difference]: Finished difference. Result has 94 places, 109 transitions, 854 flow [2023-08-31 23:55:36,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=774, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=854, PETRI_PLACES=94, PETRI_TRANSITIONS=109} [2023-08-31 23:55:36,661 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 8 predicate places. [2023-08-31 23:55:36,661 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 109 transitions, 854 flow [2023-08-31 23:55:36,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 190.33333333333334) internal successors, (1142), 6 states have internal predecessors, (1142), 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) [2023-08-31 23:55:36,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:55:36,662 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:55:36,679 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 (16)] Forceful destruction successful, exit code 0 [2023-08-31 23:55:36,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /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 [2023-08-31 23:55:36,879 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-31 23:55:36,879 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:55:36,879 INFO L85 PathProgramCache]: Analyzing trace with hash -2121042600, now seen corresponding path program 1 times [2023-08-31 23:55:36,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:55:36,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [875875917] [2023-08-31 23:55:36,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:55:36,880 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 [2023-08-31 23:55:36,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:55:36,881 INFO L229 MonitoredProcess]: Starting monitored process 17 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) [2023-08-31 23:55:36,901 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 (17)] Waiting until timeout for monitored process [2023-08-31 23:55:37,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:55:37,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-31 23:55:37,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:55:37,158 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 7 [2023-08-31 23:55:37,164 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 [2023-08-31 23:55:37,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:55:37,275 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 [2023-08-31 23:55:37,291 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-08-31 23:55:37,292 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 13 treesize of output 13 [2023-08-31 23:55:37,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:55:37,312 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:55:37,312 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:55:37,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [875875917] [2023-08-31 23:55:37,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [875875917] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:55:37,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:55:37,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 23:55:37,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782993945] [2023-08-31 23:55:37,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:55:37,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 23:55:37,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:55:37,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 23:55:37,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-31 23:55:38,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 475 [2023-08-31 23:55:38,695 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 109 transitions, 854 flow. Second operand has 6 states, 6 states have (on average 190.33333333333334) internal successors, (1142), 6 states have internal predecessors, (1142), 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) [2023-08-31 23:55:38,695 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:55:38,695 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 475 [2023-08-31 23:55:38,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:55:39,701 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec, FloatRoundingMode], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-31 23:55:42,292 INFO L130 PetriNetUnfolder]: 2035/3643 cut-off events. [2023-08-31 23:55:42,292 INFO L131 PetriNetUnfolder]: For 11267/11447 co-relation queries the response was YES. [2023-08-31 23:55:42,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15103 conditions, 3643 events. 2035/3643 cut-off events. For 11267/11447 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 23693 event pairs, 634 based on Foata normal form. 34/3522 useless extension candidates. Maximal degree in co-relation 15083. Up to 2081 conditions per place. [2023-08-31 23:55:42,308 INFO L137 encePairwiseOnDemand]: 459/475 looper letters, 127 selfloop transitions, 26 changer transitions 0/168 dead transitions. [2023-08-31 23:55:42,308 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 168 transitions, 1538 flow [2023-08-31 23:55:42,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 23:55:42,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 23:55:42,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1419 transitions. [2023-08-31 23:55:42,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4267669172932331 [2023-08-31 23:55:42,312 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1419 transitions. [2023-08-31 23:55:42,312 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1419 transitions. [2023-08-31 23:55:42,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:55:42,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1419 transitions. [2023-08-31 23:55:42,315 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 202.71428571428572) internal successors, (1419), 7 states have internal predecessors, (1419), 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) [2023-08-31 23:55:42,319 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 475.0) internal successors, (3800), 8 states have internal predecessors, (3800), 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) [2023-08-31 23:55:42,320 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 475.0) internal successors, (3800), 8 states have internal predecessors, (3800), 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) [2023-08-31 23:55:42,320 INFO L175 Difference]: Start difference. First operand has 94 places, 109 transitions, 854 flow. Second operand 7 states and 1419 transitions. [2023-08-31 23:55:42,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 168 transitions, 1538 flow [2023-08-31 23:55:42,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 168 transitions, 1499 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-31 23:55:42,343 INFO L231 Difference]: Finished difference. Result has 93 places, 107 transitions, 893 flow [2023-08-31 23:55:42,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=809, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=893, PETRI_PLACES=93, PETRI_TRANSITIONS=107} [2023-08-31 23:55:42,344 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 7 predicate places. [2023-08-31 23:55:42,344 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 107 transitions, 893 flow [2023-08-31 23:55:42,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 190.33333333333334) internal successors, (1142), 6 states have internal predecessors, (1142), 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) [2023-08-31 23:55:42,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:55:42,344 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:55:42,358 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 (17)] Forceful destruction successful, exit code 0 [2023-08-31 23:55:42,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /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 [2023-08-31 23:55:42,558 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-31 23:55:42,558 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:55:42,558 INFO L85 PathProgramCache]: Analyzing trace with hash -864406294, now seen corresponding path program 1 times [2023-08-31 23:55:42,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:55:42,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [657342367] [2023-08-31 23:55:42,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:55:42,559 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 [2023-08-31 23:55:42,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:55:42,560 INFO L229 MonitoredProcess]: Starting monitored process 18 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) [2023-08-31 23:55:42,561 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 (18)] Waiting until timeout for monitored process [2023-08-31 23:55:42,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:55:42,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-31 23:55:42,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:55:42,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:55:42,756 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:55:42,756 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:55:42,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [657342367] [2023-08-31 23:55:42,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [657342367] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:55:42,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:55:42,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 23:55:42,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337068417] [2023-08-31 23:55:42,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:55:42,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:55:42,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:55:42,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:55:42,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:55:42,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 475 [2023-08-31 23:55:42,765 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 107 transitions, 893 flow. Second operand has 3 states, 3 states have (on average 203.33333333333334) internal successors, (610), 3 states have internal predecessors, (610), 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) [2023-08-31 23:55:42,765 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:55:42,766 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 475 [2023-08-31 23:55:42,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:55:44,328 INFO L130 PetriNetUnfolder]: 107/263 cut-off events. [2023-08-31 23:55:44,329 INFO L131 PetriNetUnfolder]: For 613/663 co-relation queries the response was YES. [2023-08-31 23:55:44,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 979 conditions, 263 events. 107/263 cut-off events. For 613/663 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1066 event pairs, 25 based on Foata normal form. 23/266 useless extension candidates. Maximal degree in co-relation 959. Up to 161 conditions per place. [2023-08-31 23:55:44,330 INFO L137 encePairwiseOnDemand]: 473/475 looper letters, 41 selfloop transitions, 1 changer transitions 1/54 dead transitions. [2023-08-31 23:55:44,330 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 54 transitions, 437 flow [2023-08-31 23:55:44,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:55:44,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:55:44,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 639 transitions. [2023-08-31 23:55:44,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44842105263157894 [2023-08-31 23:55:44,332 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 639 transitions. [2023-08-31 23:55:44,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 639 transitions. [2023-08-31 23:55:44,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:55:44,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 639 transitions. [2023-08-31 23:55:44,333 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 213.0) internal successors, (639), 3 states have internal predecessors, (639), 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) [2023-08-31 23:55:44,335 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 475.0) internal successors, (1900), 4 states have internal predecessors, (1900), 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) [2023-08-31 23:55:44,336 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 475.0) internal successors, (1900), 4 states have internal predecessors, (1900), 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) [2023-08-31 23:55:44,336 INFO L175 Difference]: Start difference. First operand has 93 places, 107 transitions, 893 flow. Second operand 3 states and 639 transitions. [2023-08-31 23:55:44,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 54 transitions, 437 flow [2023-08-31 23:55:44,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 54 transitions, 268 flow, removed 25 selfloop flow, removed 21 redundant places. [2023-08-31 23:55:44,339 INFO L231 Difference]: Finished difference. Result has 61 places, 46 transitions, 152 flow [2023-08-31 23:55:44,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=61, PETRI_TRANSITIONS=46} [2023-08-31 23:55:44,339 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -25 predicate places. [2023-08-31 23:55:44,339 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 46 transitions, 152 flow [2023-08-31 23:55:44,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 203.33333333333334) internal successors, (610), 3 states have internal predecessors, (610), 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) [2023-08-31 23:55:44,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:55:44,340 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:55:44,357 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 (18)] Ended with exit code 0 [2023-08-31 23:55:44,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /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 [2023-08-31 23:55:44,557 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-31 23:55:44,557 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:55:44,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1441520669, now seen corresponding path program 1 times [2023-08-31 23:55:44,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:55:44,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1593479440] [2023-08-31 23:55:44,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:55:44,558 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 [2023-08-31 23:55:44,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:55:44,559 INFO L229 MonitoredProcess]: Starting monitored process 19 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) [2023-08-31 23:55:44,560 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 (19)] Waiting until timeout for monitored process [2023-08-31 23:55:44,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:55:44,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-31 23:55:44,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:55:44,766 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 [2023-08-31 23:55:44,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:55:44,794 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:55:44,794 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:55:44,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1593479440] [2023-08-31 23:55:44,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1593479440] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:55:44,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:55:44,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 23:55:44,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009584353] [2023-08-31 23:55:44,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:55:44,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:55:44,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:55:44,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:55:44,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:55:45,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 475 [2023-08-31 23:55:45,077 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 46 transitions, 152 flow. Second operand has 3 states, 3 states have (on average 203.0) internal successors, (609), 3 states have internal predecessors, (609), 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) [2023-08-31 23:55:45,077 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:55:45,077 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 475 [2023-08-31 23:55:45,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:55:46,512 INFO L130 PetriNetUnfolder]: 102/254 cut-off events. [2023-08-31 23:55:46,512 INFO L131 PetriNetUnfolder]: For 158/162 co-relation queries the response was YES. [2023-08-31 23:55:46,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 676 conditions, 254 events. 102/254 cut-off events. For 158/162 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 983 event pairs, 55 based on Foata normal form. 0/242 useless extension candidates. Maximal degree in co-relation 666. Up to 120 conditions per place. [2023-08-31 23:55:46,513 INFO L137 encePairwiseOnDemand]: 466/475 looper letters, 30 selfloop transitions, 10 changer transitions 0/49 dead transitions. [2023-08-31 23:55:46,513 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 49 transitions, 248 flow [2023-08-31 23:55:46,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:55:46,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:55:46,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 636 transitions. [2023-08-31 23:55:46,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4463157894736842 [2023-08-31 23:55:46,514 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 636 transitions. [2023-08-31 23:55:46,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 636 transitions. [2023-08-31 23:55:46,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:55:46,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 636 transitions. [2023-08-31 23:55:46,516 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 212.0) internal successors, (636), 3 states have internal predecessors, (636), 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) [2023-08-31 23:55:46,517 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 475.0) internal successors, (1900), 4 states have internal predecessors, (1900), 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) [2023-08-31 23:55:46,517 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 475.0) internal successors, (1900), 4 states have internal predecessors, (1900), 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) [2023-08-31 23:55:46,517 INFO L175 Difference]: Start difference. First operand has 61 places, 46 transitions, 152 flow. Second operand 3 states and 636 transitions. [2023-08-31 23:55:46,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 49 transitions, 248 flow [2023-08-31 23:55:46,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 49 transitions, 247 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 23:55:46,519 INFO L231 Difference]: Finished difference. Result has 59 places, 44 transitions, 167 flow [2023-08-31 23:55:46,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=167, PETRI_PLACES=59, PETRI_TRANSITIONS=44} [2023-08-31 23:55:46,520 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -27 predicate places. [2023-08-31 23:55:46,520 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 44 transitions, 167 flow [2023-08-31 23:55:46,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 203.0) internal successors, (609), 3 states have internal predecessors, (609), 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) [2023-08-31 23:55:46,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:55:46,520 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:55:46,537 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 (19)] Forceful destruction successful, exit code 0 [2023-08-31 23:55:46,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /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 [2023-08-31 23:55:46,734 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-31 23:55:46,734 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:55:46,734 INFO L85 PathProgramCache]: Analyzing trace with hash 331639650, now seen corresponding path program 1 times [2023-08-31 23:55:46,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:55:46,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2006727276] [2023-08-31 23:55:46,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:55:46,735 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 [2023-08-31 23:55:46,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:55:46,736 INFO L229 MonitoredProcess]: Starting monitored process 20 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) [2023-08-31 23:55:46,739 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 (20)] Waiting until timeout for monitored process [2023-08-31 23:55:46,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:55:46,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-31 23:55:46,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:55:46,942 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 7 [2023-08-31 23:55:46,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:55:46,951 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:55:46,951 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:55:46,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2006727276] [2023-08-31 23:55:46,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2006727276] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:55:46,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:55:46,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 23:55:46,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626694866] [2023-08-31 23:55:46,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:55:46,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:55:46,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:55:46,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:55:46,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:55:47,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 475 [2023-08-31 23:55:47,165 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 44 transitions, 167 flow. Second operand has 3 states, 3 states have (on average 200.0) internal successors, (600), 3 states have internal predecessors, (600), 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) [2023-08-31 23:55:47,165 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:55:47,165 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 475 [2023-08-31 23:55:47,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:55:48,870 INFO L130 PetriNetUnfolder]: 102/248 cut-off events. [2023-08-31 23:55:48,870 INFO L131 PetriNetUnfolder]: For 192/196 co-relation queries the response was YES. [2023-08-31 23:55:48,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 696 conditions, 248 events. 102/248 cut-off events. For 192/196 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 952 event pairs, 55 based on Foata normal form. 1/237 useless extension candidates. Maximal degree in co-relation 686. Up to 120 conditions per place. [2023-08-31 23:55:48,871 INFO L137 encePairwiseOnDemand]: 466/475 looper letters, 30 selfloop transitions, 10 changer transitions 0/47 dead transitions. [2023-08-31 23:55:48,871 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 47 transitions, 263 flow [2023-08-31 23:55:48,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:55:48,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:55:48,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 627 transitions. [2023-08-31 23:55:48,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44 [2023-08-31 23:55:48,873 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 627 transitions. [2023-08-31 23:55:48,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 627 transitions. [2023-08-31 23:55:48,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:55:48,873 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 627 transitions. [2023-08-31 23:55:48,874 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 209.0) internal successors, (627), 3 states have internal predecessors, (627), 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) [2023-08-31 23:55:48,875 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 475.0) internal successors, (1900), 4 states have internal predecessors, (1900), 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) [2023-08-31 23:55:48,876 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 475.0) internal successors, (1900), 4 states have internal predecessors, (1900), 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) [2023-08-31 23:55:48,876 INFO L175 Difference]: Start difference. First operand has 59 places, 44 transitions, 167 flow. Second operand 3 states and 627 transitions. [2023-08-31 23:55:48,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 47 transitions, 263 flow [2023-08-31 23:55:48,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 47 transitions, 243 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 23:55:48,878 INFO L231 Difference]: Finished difference. Result has 57 places, 42 transitions, 163 flow [2023-08-31 23:55:48,878 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=163, PETRI_PLACES=57, PETRI_TRANSITIONS=42} [2023-08-31 23:55:48,878 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -29 predicate places. [2023-08-31 23:55:48,878 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 42 transitions, 163 flow [2023-08-31 23:55:48,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 200.0) internal successors, (600), 3 states have internal predecessors, (600), 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) [2023-08-31 23:55:48,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:55:48,879 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:55:48,892 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 (20)] Forceful destruction successful, exit code 0 [2023-08-31 23:55:49,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /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 [2023-08-31 23:55:49,092 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-31 23:55:49,092 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:55:49,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1735467703, now seen corresponding path program 1 times [2023-08-31 23:55:49,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:55:49,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [857258833] [2023-08-31 23:55:49,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:55:49,093 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 [2023-08-31 23:55:49,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:55:49,094 INFO L229 MonitoredProcess]: Starting monitored process 21 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) [2023-08-31 23:55:49,095 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 (21)] Waiting until timeout for monitored process [2023-08-31 23:55:49,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:55:49,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-31 23:55:49,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:55:49,447 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 9 [2023-08-31 23:55:49,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:55:49,505 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:55:49,505 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:55:49,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [857258833] [2023-08-31 23:55:49,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [857258833] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:55:49,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:55:49,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-31 23:55:49,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677645199] [2023-08-31 23:55:49,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:55:49,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 23:55:49,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:55:49,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 23:55:49,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-31 23:55:49,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 475 [2023-08-31 23:55:49,566 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 42 transitions, 163 flow. Second operand has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 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) [2023-08-31 23:55:49,566 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:55:49,566 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 475 [2023-08-31 23:55:49,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:55:51,481 INFO L130 PetriNetUnfolder]: 114/283 cut-off events. [2023-08-31 23:55:51,481 INFO L131 PetriNetUnfolder]: For 233/239 co-relation queries the response was YES. [2023-08-31 23:55:51,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 794 conditions, 283 events. 114/283 cut-off events. For 233/239 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1237 event pairs, 47 based on Foata normal form. 11/282 useless extension candidates. Maximal degree in co-relation 784. Up to 123 conditions per place. [2023-08-31 23:55:51,483 INFO L137 encePairwiseOnDemand]: 468/475 looper letters, 44 selfloop transitions, 8 changer transitions 0/59 dead transitions. [2023-08-31 23:55:51,483 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 59 transitions, 341 flow [2023-08-31 23:55:51,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 23:55:51,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 23:55:51,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1246 transitions. [2023-08-31 23:55:51,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43719298245614036 [2023-08-31 23:55:51,486 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1246 transitions. [2023-08-31 23:55:51,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1246 transitions. [2023-08-31 23:55:51,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:55:51,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1246 transitions. [2023-08-31 23:55:51,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 207.66666666666666) internal successors, (1246), 6 states have internal predecessors, (1246), 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) [2023-08-31 23:55:51,491 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 475.0) internal successors, (3325), 7 states have internal predecessors, (3325), 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) [2023-08-31 23:55:51,492 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 475.0) internal successors, (3325), 7 states have internal predecessors, (3325), 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) [2023-08-31 23:55:51,492 INFO L175 Difference]: Start difference. First operand has 57 places, 42 transitions, 163 flow. Second operand 6 states and 1246 transitions. [2023-08-31 23:55:51,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 59 transitions, 341 flow [2023-08-31 23:55:51,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 59 transitions, 315 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 23:55:51,494 INFO L231 Difference]: Finished difference. Result has 62 places, 46 transitions, 193 flow [2023-08-31 23:55:51,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=193, PETRI_PLACES=62, PETRI_TRANSITIONS=46} [2023-08-31 23:55:51,495 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -24 predicate places. [2023-08-31 23:55:51,495 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 46 transitions, 193 flow [2023-08-31 23:55:51,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 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) [2023-08-31 23:55:51,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:55:51,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:55:51,513 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 (21)] Ended with exit code 0 [2023-08-31 23:55:51,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /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 [2023-08-31 23:55:51,713 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-31 23:55:51,713 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:55:51,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1088051269, now seen corresponding path program 2 times [2023-08-31 23:55:51,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:55:51,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [916843155] [2023-08-31 23:55:51,714 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-31 23:55:51,714 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 [2023-08-31 23:55:51,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:55:51,716 INFO L229 MonitoredProcess]: Starting monitored process 22 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) [2023-08-31 23:55:51,718 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 (22)] Waiting until timeout for monitored process [2023-08-31 23:55:52,019 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-31 23:55:52,019 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 23:55:52,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-31 23:55:52,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:55:52,119 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 9 [2023-08-31 23:55:52,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:55:52,137 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:55:52,138 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:55:52,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [916843155] [2023-08-31 23:55:52,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [916843155] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:55:52,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:55:52,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-31 23:55:52,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130750449] [2023-08-31 23:55:52,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:55:52,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 23:55:52,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:55:52,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 23:55:52,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-31 23:55:52,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 475 [2023-08-31 23:55:52,173 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 46 transitions, 193 flow. Second operand has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 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) [2023-08-31 23:55:52,173 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:55:52,173 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 475 [2023-08-31 23:55:52,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:55:54,577 INFO L130 PetriNetUnfolder]: 52/172 cut-off events. [2023-08-31 23:55:54,577 INFO L131 PetriNetUnfolder]: For 212/215 co-relation queries the response was YES. [2023-08-31 23:55:54,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 519 conditions, 172 events. 52/172 cut-off events. For 212/215 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 610 event pairs, 12 based on Foata normal form. 15/179 useless extension candidates. Maximal degree in co-relation 507. Up to 77 conditions per place. [2023-08-31 23:55:54,577 INFO L137 encePairwiseOnDemand]: 468/475 looper letters, 36 selfloop transitions, 13 changer transitions 0/56 dead transitions. [2023-08-31 23:55:54,578 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 56 transitions, 327 flow [2023-08-31 23:55:54,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 23:55:54,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 23:55:54,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1443 transitions. [2023-08-31 23:55:54,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43398496240601503 [2023-08-31 23:55:54,580 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1443 transitions. [2023-08-31 23:55:54,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1443 transitions. [2023-08-31 23:55:54,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:55:54,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1443 transitions. [2023-08-31 23:55:54,582 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 206.14285714285714) internal successors, (1443), 7 states have internal predecessors, (1443), 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) [2023-08-31 23:55:54,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 475.0) internal successors, (3800), 8 states have internal predecessors, (3800), 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) [2023-08-31 23:55:54,585 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 475.0) internal successors, (3800), 8 states have internal predecessors, (3800), 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) [2023-08-31 23:55:54,585 INFO L175 Difference]: Start difference. First operand has 62 places, 46 transitions, 193 flow. Second operand 7 states and 1443 transitions. [2023-08-31 23:55:54,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 56 transitions, 327 flow [2023-08-31 23:55:54,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 56 transitions, 292 flow, removed 11 selfloop flow, removed 5 redundant places. [2023-08-31 23:55:54,587 INFO L231 Difference]: Finished difference. Result has 63 places, 46 transitions, 190 flow [2023-08-31 23:55:54,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=190, PETRI_PLACES=63, PETRI_TRANSITIONS=46} [2023-08-31 23:55:54,588 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -23 predicate places. [2023-08-31 23:55:54,588 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 46 transitions, 190 flow [2023-08-31 23:55:54,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 203.0) internal successors, (1218), 6 states have internal predecessors, (1218), 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) [2023-08-31 23:55:54,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:55:54,589 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:55:54,604 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 (22)] Ended with exit code 0 [2023-08-31 23:55:54,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /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 [2023-08-31 23:55:54,804 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-31 23:55:54,805 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:55:54,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1929543140, now seen corresponding path program 1 times [2023-08-31 23:55:54,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:55:54,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1197940388] [2023-08-31 23:55:54,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:55:54,805 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 [2023-08-31 23:55:54,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:55:54,806 INFO L229 MonitoredProcess]: Starting monitored process 23 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) [2023-08-31 23:55:54,807 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 (23)] Waiting until timeout for monitored process [2023-08-31 23:55:55,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:55:55,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 21 conjunts are in the unsatisfiable core [2023-08-31 23:55:55,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:55:55,268 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 [2023-08-31 23:55:55,278 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 7 [2023-08-31 23:55:55,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:55:55,453 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 [2023-08-31 23:55:55,463 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-08-31 23:55:55,464 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 13 treesize of output 13 [2023-08-31 23:55:55,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:55:55,498 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:55:55,498 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:55:55,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1197940388] [2023-08-31 23:55:55,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1197940388] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:55:55,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:55:55,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-31 23:55:55,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259302971] [2023-08-31 23:55:55,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:55:55,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 23:55:55,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:55:55,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 23:55:55,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-08-31 23:55:56,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 475 [2023-08-31 23:55:56,478 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 46 transitions, 190 flow. Second operand has 7 states, 7 states have (on average 181.57142857142858) internal successors, (1271), 7 states have internal predecessors, (1271), 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) [2023-08-31 23:55:56,478 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:55:56,478 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 475 [2023-08-31 23:55:56,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:55:58,121 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec, FloatRoundingMode], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-31 23:55:58,910 INFO L130 PetriNetUnfolder]: 52/167 cut-off events. [2023-08-31 23:55:58,910 INFO L131 PetriNetUnfolder]: For 148/148 co-relation queries the response was YES. [2023-08-31 23:55:58,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 470 conditions, 167 events. 52/167 cut-off events. For 148/148 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 603 event pairs, 30 based on Foata normal form. 0/162 useless extension candidates. Maximal degree in co-relation 460. Up to 119 conditions per place. [2023-08-31 23:55:58,911 INFO L137 encePairwiseOnDemand]: 464/475 looper letters, 31 selfloop transitions, 6 changer transitions 0/42 dead transitions. [2023-08-31 23:55:58,911 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 42 transitions, 252 flow [2023-08-31 23:55:58,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 23:55:58,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 23:55:58,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1110 transitions. [2023-08-31 23:55:58,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3894736842105263 [2023-08-31 23:55:58,913 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1110 transitions. [2023-08-31 23:55:58,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1110 transitions. [2023-08-31 23:55:58,914 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:55:58,914 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1110 transitions. [2023-08-31 23:55:58,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 185.0) internal successors, (1110), 6 states have internal predecessors, (1110), 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) [2023-08-31 23:55:58,917 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 475.0) internal successors, (3325), 7 states have internal predecessors, (3325), 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) [2023-08-31 23:55:58,917 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 475.0) internal successors, (3325), 7 states have internal predecessors, (3325), 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) [2023-08-31 23:55:58,918 INFO L175 Difference]: Start difference. First operand has 63 places, 46 transitions, 190 flow. Second operand 6 states and 1110 transitions. [2023-08-31 23:55:58,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 42 transitions, 252 flow [2023-08-31 23:55:58,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 42 transitions, 235 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-08-31 23:55:58,919 INFO L231 Difference]: Finished difference. Result has 58 places, 40 transitions, 169 flow [2023-08-31 23:55:58,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=169, PETRI_PLACES=58, PETRI_TRANSITIONS=40} [2023-08-31 23:55:58,920 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -28 predicate places. [2023-08-31 23:55:58,920 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 40 transitions, 169 flow [2023-08-31 23:55:58,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 181.57142857142858) internal successors, (1271), 7 states have internal predecessors, (1271), 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) [2023-08-31 23:55:58,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:55:58,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:55:58,940 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 (23)] Ended with exit code 0 [2023-08-31 23:55:59,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /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 [2023-08-31 23:55:59,137 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-31 23:55:59,137 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:55:59,137 INFO L85 PathProgramCache]: Analyzing trace with hash 648864423, now seen corresponding path program 3 times [2023-08-31 23:55:59,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:55:59,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [499283784] [2023-08-31 23:55:59,138 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-31 23:55:59,138 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 [2023-08-31 23:55:59,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:55:59,139 INFO L229 MonitoredProcess]: Starting monitored process 24 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) [2023-08-31 23:55:59,140 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 (24)] Waiting until timeout for monitored process [2023-08-31 23:55:59,584 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-31 23:55:59,584 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 23:55:59,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 78 conjunts are in the unsatisfiable core [2023-08-31 23:55:59,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:55:59,691 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-08-31 23:55:59,691 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2023-08-31 23:55:59,715 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 63 [2023-08-31 23:55:59,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:55:59,722 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 63 treesize of output 51 [2023-08-31 23:55:59,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:55:59,989 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 63 treesize of output 51 [2023-08-31 23:56:00,334 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 81 [2023-08-31 23:56:00,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:56:00,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:56:00,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:56:00,588 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 23:56:00,589 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 23:56:00,590 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 77 [2023-08-31 23:56:01,009 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 30 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 105 [2023-08-31 23:56:01,156 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 185 treesize of output 113 [2023-08-31 23:56:01,318 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2023-08-31 23:56:01,318 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2023-08-31 23:56:01,454 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 215 treesize of output 211 [2023-08-31 23:56:01,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:56:01,529 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:56:01,529 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:56:01,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [499283784] [2023-08-31 23:56:01,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [499283784] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:56:01,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:56:01,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-08-31 23:56:01,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333020367] [2023-08-31 23:56:01,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:56:01,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-31 23:56:01,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:56:01,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-31 23:56:01,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-08-31 23:56:07,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 475 [2023-08-31 23:56:07,255 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 40 transitions, 169 flow. Second operand has 14 states, 14 states have (on average 159.5) internal successors, (2233), 14 states have internal predecessors, (2233), 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) [2023-08-31 23:56:07,255 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:56:07,255 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 475 [2023-08-31 23:56:07,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:56:16,869 INFO L130 PetriNetUnfolder]: 116/303 cut-off events. [2023-08-31 23:56:16,869 INFO L131 PetriNetUnfolder]: For 235/235 co-relation queries the response was YES. [2023-08-31 23:56:16,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 832 conditions, 303 events. 116/303 cut-off events. For 235/235 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1234 event pairs, 20 based on Foata normal form. 1/301 useless extension candidates. Maximal degree in co-relation 824. Up to 153 conditions per place. [2023-08-31 23:56:16,870 INFO L137 encePairwiseOnDemand]: 456/475 looper letters, 79 selfloop transitions, 28 changer transitions 0/109 dead transitions. [2023-08-31 23:56:16,870 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 109 transitions, 671 flow [2023-08-31 23:56:16,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-31 23:56:16,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-31 23:56:16,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2146 transitions. [2023-08-31 23:56:16,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34753036437246965 [2023-08-31 23:56:16,874 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2146 transitions. [2023-08-31 23:56:16,874 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2146 transitions. [2023-08-31 23:56:16,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:56:16,875 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2146 transitions. [2023-08-31 23:56:16,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 165.07692307692307) internal successors, (2146), 13 states have internal predecessors, (2146), 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) [2023-08-31 23:56:16,882 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 475.0) internal successors, (6650), 14 states have internal predecessors, (6650), 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) [2023-08-31 23:56:16,882 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 475.0) internal successors, (6650), 14 states have internal predecessors, (6650), 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) [2023-08-31 23:56:16,882 INFO L175 Difference]: Start difference. First operand has 58 places, 40 transitions, 169 flow. Second operand 13 states and 2146 transitions. [2023-08-31 23:56:16,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 109 transitions, 671 flow [2023-08-31 23:56:16,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 109 transitions, 648 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-31 23:56:16,893 INFO L231 Difference]: Finished difference. Result has 76 places, 67 transitions, 394 flow [2023-08-31 23:56:16,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=394, PETRI_PLACES=76, PETRI_TRANSITIONS=67} [2023-08-31 23:56:16,894 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -10 predicate places. [2023-08-31 23:56:16,894 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 67 transitions, 394 flow [2023-08-31 23:56:16,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 159.5) internal successors, (2233), 14 states have internal predecessors, (2233), 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) [2023-08-31 23:56:16,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:56:16,895 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:56:16,908 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 (24)] Forceful destruction successful, exit code 0 [2023-08-31 23:56:17,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /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 [2023-08-31 23:56:17,095 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-31 23:56:17,095 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:56:17,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1336909091, now seen corresponding path program 1 times [2023-08-31 23:56:17,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:56:17,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1268875274] [2023-08-31 23:56:17,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:56:17,096 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 [2023-08-31 23:56:17,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:56:17,097 INFO L229 MonitoredProcess]: Starting monitored process 25 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) [2023-08-31 23:56:17,098 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 (25)] Waiting until timeout for monitored process [2023-08-31 23:56:17,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:56:17,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-31 23:56:17,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:56:17,453 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 7 [2023-08-31 23:56:17,481 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-08-31 23:56:17,481 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 19 treesize of output 27 [2023-08-31 23:56:17,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:56:17,548 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:56:17,548 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:56:17,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1268875274] [2023-08-31 23:56:17,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1268875274] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:56:17,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:56:17,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 23:56:17,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321382330] [2023-08-31 23:56:17,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:56:17,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 23:56:17,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:56:17,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 23:56:17,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-31 23:56:17,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 475 [2023-08-31 23:56:17,924 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 67 transitions, 394 flow. Second operand has 4 states, 4 states have (on average 187.5) internal successors, (750), 4 states have internal predecessors, (750), 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) [2023-08-31 23:56:17,924 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:56:17,924 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 475 [2023-08-31 23:56:17,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:56:19,195 INFO L130 PetriNetUnfolder]: 84/263 cut-off events. [2023-08-31 23:56:19,195 INFO L131 PetriNetUnfolder]: For 362/367 co-relation queries the response was YES. [2023-08-31 23:56:19,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 900 conditions, 263 events. 84/263 cut-off events. For 362/367 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1143 event pairs, 31 based on Foata normal form. 3/260 useless extension candidates. Maximal degree in co-relation 882. Up to 113 conditions per place. [2023-08-31 23:56:19,197 INFO L137 encePairwiseOnDemand]: 468/475 looper letters, 54 selfloop transitions, 12 changer transitions 0/75 dead transitions. [2023-08-31 23:56:19,197 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 75 transitions, 563 flow [2023-08-31 23:56:19,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 23:56:19,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 23:56:19,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 765 transitions. [2023-08-31 23:56:19,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4026315789473684 [2023-08-31 23:56:19,198 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 765 transitions. [2023-08-31 23:56:19,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 765 transitions. [2023-08-31 23:56:19,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:56:19,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 765 transitions. [2023-08-31 23:56:19,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 191.25) internal successors, (765), 4 states have internal predecessors, (765), 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) [2023-08-31 23:56:19,200 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 475.0) internal successors, (2375), 5 states have internal predecessors, (2375), 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) [2023-08-31 23:56:19,200 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 475.0) internal successors, (2375), 5 states have internal predecessors, (2375), 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) [2023-08-31 23:56:19,200 INFO L175 Difference]: Start difference. First operand has 76 places, 67 transitions, 394 flow. Second operand 4 states and 765 transitions. [2023-08-31 23:56:19,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 75 transitions, 563 flow [2023-08-31 23:56:19,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 75 transitions, 561 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 23:56:19,203 INFO L231 Difference]: Finished difference. Result has 76 places, 66 transitions, 409 flow [2023-08-31 23:56:19,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=409, PETRI_PLACES=76, PETRI_TRANSITIONS=66} [2023-08-31 23:56:19,203 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -10 predicate places. [2023-08-31 23:56:19,204 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 66 transitions, 409 flow [2023-08-31 23:56:19,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 187.5) internal successors, (750), 4 states have internal predecessors, (750), 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) [2023-08-31 23:56:19,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:56:19,204 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:56:19,220 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 (25)] Ended with exit code 0 [2023-08-31 23:56:19,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /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 [2023-08-31 23:56:19,420 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-31 23:56:19,420 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:56:19,421 INFO L85 PathProgramCache]: Analyzing trace with hash -2132073185, now seen corresponding path program 1 times [2023-08-31 23:56:19,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:56:19,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [535176865] [2023-08-31 23:56:19,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:56:19,421 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 [2023-08-31 23:56:19,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:56:19,422 INFO L229 MonitoredProcess]: Starting monitored process 26 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) [2023-08-31 23:56:19,424 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 (26)] Waiting until timeout for monitored process [2023-08-31 23:56:19,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:56:19,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 39 conjunts are in the unsatisfiable core [2023-08-31 23:56:19,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:56:19,893 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 7 [2023-08-31 23:56:20,124 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-08-31 23:56:20,124 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 13 treesize of output 13 [2023-08-31 23:56:20,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:56:20,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:56:20,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:56:20,188 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 23:56:20,188 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 23:56:20,189 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 33 [2023-08-31 23:56:20,314 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 29 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 73 [2023-08-31 23:56:20,423 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 39 treesize of output 35 [2023-08-31 23:56:20,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:56:20,473 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:56:20,473 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:56:20,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [535176865] [2023-08-31 23:56:20,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [535176865] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:56:20,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:56:20,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 23:56:20,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693603859] [2023-08-31 23:56:20,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:56:20,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 23:56:20,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:56:20,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 23:56:20,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-08-31 23:56:22,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 475 [2023-08-31 23:56:22,200 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 66 transitions, 409 flow. Second operand has 9 states, 9 states have (on average 169.22222222222223) internal successors, (1523), 9 states have internal predecessors, (1523), 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) [2023-08-31 23:56:22,200 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:56:22,200 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 475 [2023-08-31 23:56:22,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:56:25,820 INFO L130 PetriNetUnfolder]: 146/416 cut-off events. [2023-08-31 23:56:25,820 INFO L131 PetriNetUnfolder]: For 584/589 co-relation queries the response was YES. [2023-08-31 23:56:25,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1417 conditions, 416 events. 146/416 cut-off events. For 584/589 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2136 event pairs, 23 based on Foata normal form. 3/413 useless extension candidates. Maximal degree in co-relation 1398. Up to 148 conditions per place. [2023-08-31 23:56:25,822 INFO L137 encePairwiseOnDemand]: 464/475 looper letters, 86 selfloop transitions, 25 changer transitions 0/115 dead transitions. [2023-08-31 23:56:25,822 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 115 transitions, 871 flow [2023-08-31 23:56:25,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-31 23:56:25,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-31 23:56:25,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1403 transitions. [2023-08-31 23:56:25,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3692105263157895 [2023-08-31 23:56:25,830 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1403 transitions. [2023-08-31 23:56:25,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1403 transitions. [2023-08-31 23:56:25,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:56:25,830 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1403 transitions. [2023-08-31 23:56:25,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 175.375) internal successors, (1403), 8 states have internal predecessors, (1403), 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) [2023-08-31 23:56:25,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 475.0) internal successors, (4275), 9 states have internal predecessors, (4275), 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) [2023-08-31 23:56:25,833 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 475.0) internal successors, (4275), 9 states have internal predecessors, (4275), 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) [2023-08-31 23:56:25,834 INFO L175 Difference]: Start difference. First operand has 76 places, 66 transitions, 409 flow. Second operand 8 states and 1403 transitions. [2023-08-31 23:56:25,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 115 transitions, 871 flow [2023-08-31 23:56:25,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 115 transitions, 837 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-31 23:56:25,836 INFO L231 Difference]: Finished difference. Result has 82 places, 75 transitions, 519 flow [2023-08-31 23:56:25,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=519, PETRI_PLACES=82, PETRI_TRANSITIONS=75} [2023-08-31 23:56:25,837 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, -4 predicate places. [2023-08-31 23:56:25,837 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 75 transitions, 519 flow [2023-08-31 23:56:25,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 169.22222222222223) internal successors, (1523), 9 states have internal predecessors, (1523), 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) [2023-08-31 23:56:25,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:56:25,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:56:25,850 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 (26)] Forceful destruction successful, exit code 0 [2023-08-31 23:56:26,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /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 [2023-08-31 23:56:26,038 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-31 23:56:26,038 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:56:26,038 INFO L85 PathProgramCache]: Analyzing trace with hash 781128905, now seen corresponding path program 4 times [2023-08-31 23:56:26,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:56:26,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1806664769] [2023-08-31 23:56:26,039 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-31 23:56:26,039 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 [2023-08-31 23:56:26,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:56:26,040 INFO L229 MonitoredProcess]: Starting monitored process 27 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) [2023-08-31 23:56:26,043 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 (27)] Waiting until timeout for monitored process [2023-08-31 23:56:26,515 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-31 23:56:26,515 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 23:56:26,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 79 conjunts are in the unsatisfiable core [2023-08-31 23:56:26,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:56:26,597 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-08-31 23:56:26,597 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2023-08-31 23:56:26,616 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 63 [2023-08-31 23:56:26,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:56:26,623 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 63 treesize of output 51 [2023-08-31 23:56:26,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:56:26,873 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 63 treesize of output 51 [2023-08-31 23:56:27,144 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 81 [2023-08-31 23:56:27,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:56:27,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:56:27,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:56:27,473 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 23:56:27,473 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 23:56:27,477 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 77 [2023-08-31 23:56:27,731 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2023-08-31 23:56:27,731 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2023-08-31 23:56:27,911 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 31 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 105 [2023-08-31 23:56:28,069 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 185 treesize of output 113 [2023-08-31 23:56:28,170 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 215 treesize of output 211 [2023-08-31 23:56:28,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:56:28,237 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:56:28,237 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:56:28,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1806664769] [2023-08-31 23:56:28,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1806664769] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:56:28,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:56:28,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-08-31 23:56:28,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306300465] [2023-08-31 23:56:28,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:56:28,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-31 23:56:28,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:56:28,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-31 23:56:28,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-08-31 23:56:33,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 475 [2023-08-31 23:56:33,802 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 75 transitions, 519 flow. Second operand has 14 states, 14 states have (on average 159.5) internal successors, (2233), 14 states have internal predecessors, (2233), 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) [2023-08-31 23:56:33,802 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:56:33,802 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 475 [2023-08-31 23:56:33,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:56:37,045 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec, FloatRoundingMode], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-31 23:56:42,621 INFO L130 PetriNetUnfolder]: 201/536 cut-off events. [2023-08-31 23:56:42,622 INFO L131 PetriNetUnfolder]: For 946/946 co-relation queries the response was YES. [2023-08-31 23:56:42,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1895 conditions, 536 events. 201/536 cut-off events. For 946/946 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2907 event pairs, 69 based on Foata normal form. 0/530 useless extension candidates. Maximal degree in co-relation 1874. Up to 368 conditions per place. [2023-08-31 23:56:42,623 INFO L137 encePairwiseOnDemand]: 458/475 looper letters, 99 selfloop transitions, 30 changer transitions 0/131 dead transitions. [2023-08-31 23:56:42,623 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 131 transitions, 1088 flow [2023-08-31 23:56:42,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-31 23:56:42,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-31 23:56:42,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2299 transitions. [2023-08-31 23:56:42,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3457142857142857 [2023-08-31 23:56:42,626 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2299 transitions. [2023-08-31 23:56:42,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2299 transitions. [2023-08-31 23:56:42,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:56:42,627 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2299 transitions. [2023-08-31 23:56:42,630 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 164.21428571428572) internal successors, (2299), 14 states have internal predecessors, (2299), 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) [2023-08-31 23:56:42,633 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 475.0) internal successors, (7125), 15 states have internal predecessors, (7125), 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) [2023-08-31 23:56:42,634 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 475.0) internal successors, (7125), 15 states have internal predecessors, (7125), 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) [2023-08-31 23:56:42,634 INFO L175 Difference]: Start difference. First operand has 82 places, 75 transitions, 519 flow. Second operand 14 states and 2299 transitions. [2023-08-31 23:56:42,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 131 transitions, 1088 flow [2023-08-31 23:56:42,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 131 transitions, 1053 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-08-31 23:56:42,638 INFO L231 Difference]: Finished difference. Result has 96 places, 94 transitions, 736 flow [2023-08-31 23:56:42,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=496, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=736, PETRI_PLACES=96, PETRI_TRANSITIONS=94} [2023-08-31 23:56:42,638 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 10 predicate places. [2023-08-31 23:56:42,639 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 94 transitions, 736 flow [2023-08-31 23:56:42,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 159.5) internal successors, (2233), 14 states have internal predecessors, (2233), 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) [2023-08-31 23:56:42,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:56:42,639 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:56:42,652 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 (27)] Forceful destruction successful, exit code 0 [2023-08-31 23:56:42,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /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 [2023-08-31 23:56:42,845 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-31 23:56:42,845 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:56:42,845 INFO L85 PathProgramCache]: Analyzing trace with hash 95122215, now seen corresponding path program 5 times [2023-08-31 23:56:42,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:56:42,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2027116371] [2023-08-31 23:56:42,846 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-31 23:56:42,846 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 [2023-08-31 23:56:42,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:56:42,848 INFO L229 MonitoredProcess]: Starting monitored process 28 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) [2023-08-31 23:56:42,851 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 (28)] Waiting until timeout for monitored process [2023-08-31 23:56:43,363 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-31 23:56:43,363 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 23:56:43,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 79 conjunts are in the unsatisfiable core [2023-08-31 23:56:43,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:56:43,420 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 63 [2023-08-31 23:56:43,435 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-31 23:56:43,435 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 55 [2023-08-31 23:56:43,499 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-08-31 23:56:43,499 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2023-08-31 23:56:43,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:56:43,736 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 63 treesize of output 51 [2023-08-31 23:56:44,051 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 81 [2023-08-31 23:56:44,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:56:44,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:56:44,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:56:44,396 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 23:56:44,396 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 23:56:44,397 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 77 [2023-08-31 23:56:44,658 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 30 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 105 [2023-08-31 23:56:44,847 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 185 treesize of output 113 [2023-08-31 23:56:44,986 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2023-08-31 23:56:44,986 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2023-08-31 23:56:45,174 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 215 treesize of output 211 [2023-08-31 23:56:45,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:56:45,240 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:56:45,240 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:56:45,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2027116371] [2023-08-31 23:56:45,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2027116371] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:56:45,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:56:45,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-08-31 23:56:45,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113082862] [2023-08-31 23:56:45,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:56:45,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-31 23:56:45,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:56:45,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-31 23:56:45,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-08-31 23:56:50,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 475 [2023-08-31 23:56:50,447 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 94 transitions, 736 flow. Second operand has 14 states, 14 states have (on average 159.5) internal successors, (2233), 14 states have internal predecessors, (2233), 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) [2023-08-31 23:56:50,447 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:56:50,447 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 475 [2023-08-31 23:56:50,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:56:54,935 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec, FloatRoundingMode], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-31 23:56:59,950 INFO L130 PetriNetUnfolder]: 238/631 cut-off events. [2023-08-31 23:56:59,950 INFO L131 PetriNetUnfolder]: For 1435/1435 co-relation queries the response was YES. [2023-08-31 23:56:59,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2455 conditions, 631 events. 238/631 cut-off events. For 1435/1435 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 3687 event pairs, 80 based on Foata normal form. 0/624 useless extension candidates. Maximal degree in co-relation 2429. Up to 468 conditions per place. [2023-08-31 23:56:59,953 INFO L137 encePairwiseOnDemand]: 457/475 looper letters, 110 selfloop transitions, 30 changer transitions 0/142 dead transitions. [2023-08-31 23:56:59,953 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 142 transitions, 1309 flow [2023-08-31 23:56:59,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-31 23:56:59,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-31 23:56:59,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2139 transitions. [2023-08-31 23:56:59,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34639676113360324 [2023-08-31 23:56:59,956 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2139 transitions. [2023-08-31 23:56:59,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2139 transitions. [2023-08-31 23:56:59,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:56:59,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2139 transitions. [2023-08-31 23:56:59,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 164.53846153846155) internal successors, (2139), 13 states have internal predecessors, (2139), 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) [2023-08-31 23:56:59,961 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 475.0) internal successors, (6650), 14 states have internal predecessors, (6650), 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) [2023-08-31 23:56:59,962 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 475.0) internal successors, (6650), 14 states have internal predecessors, (6650), 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) [2023-08-31 23:56:59,962 INFO L175 Difference]: Start difference. First operand has 96 places, 94 transitions, 736 flow. Second operand 13 states and 2139 transitions. [2023-08-31 23:56:59,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 142 transitions, 1309 flow [2023-08-31 23:56:59,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 142 transitions, 1277 flow, removed 12 selfloop flow, removed 2 redundant places. [2023-08-31 23:56:59,968 INFO L231 Difference]: Finished difference. Result has 112 places, 109 transitions, 945 flow [2023-08-31 23:56:59,968 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=706, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=945, PETRI_PLACES=112, PETRI_TRANSITIONS=109} [2023-08-31 23:56:59,968 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 26 predicate places. [2023-08-31 23:56:59,968 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 109 transitions, 945 flow [2023-08-31 23:56:59,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 159.5) internal successors, (2233), 14 states have internal predecessors, (2233), 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) [2023-08-31 23:56:59,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:56:59,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:56:59,981 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 (28)] Ended with exit code 0 [2023-08-31 23:57:00,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /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 [2023-08-31 23:57:00,169 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-31 23:57:00,169 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:57:00,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1509559787, now seen corresponding path program 6 times [2023-08-31 23:57:00,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:57:00,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [306440188] [2023-08-31 23:57:00,170 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-31 23:57:00,170 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 [2023-08-31 23:57:00,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:57:00,171 INFO L229 MonitoredProcess]: Starting monitored process 29 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) [2023-08-31 23:57:00,172 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 (29)] Waiting until timeout for monitored process [2023-08-31 23:57:00,626 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-08-31 23:57:00,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 23:57:00,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 78 conjunts are in the unsatisfiable core [2023-08-31 23:57:00,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:57:00,687 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 63 [2023-08-31 23:57:00,702 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-31 23:57:00,702 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 55 [2023-08-31 23:57:00,763 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-08-31 23:57:00,764 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2023-08-31 23:57:01,032 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:57:01,033 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 63 treesize of output 51 [2023-08-31 23:57:01,302 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 81 [2023-08-31 23:57:01,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:57:01,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:57:01,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:57:01,517 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 23:57:01,517 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 23:57:01,518 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 77 [2023-08-31 23:57:01,892 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 30 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 105 [2023-08-31 23:57:01,961 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2023-08-31 23:57:01,961 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2023-08-31 23:57:02,137 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 67 [2023-08-31 23:57:02,311 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 185 treesize of output 113 [2023-08-31 23:57:02,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:57:02,490 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:57:02,490 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:57:02,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [306440188] [2023-08-31 23:57:02,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [306440188] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:57:02,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:57:02,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-08-31 23:57:02,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187878842] [2023-08-31 23:57:02,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:57:02,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-31 23:57:02,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:57:02,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-31 23:57:02,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-08-31 23:57:07,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 475 [2023-08-31 23:57:07,877 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 109 transitions, 945 flow. Second operand has 14 states, 14 states have (on average 159.5) internal successors, (2233), 14 states have internal predecessors, (2233), 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) [2023-08-31 23:57:07,878 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:57:07,878 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 475 [2023-08-31 23:57:07,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:57:15,358 INFO L130 PetriNetUnfolder]: 251/674 cut-off events. [2023-08-31 23:57:15,358 INFO L131 PetriNetUnfolder]: For 1997/1997 co-relation queries the response was YES. [2023-08-31 23:57:15,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2818 conditions, 674 events. 251/674 cut-off events. For 1997/1997 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 4015 event pairs, 64 based on Foata normal form. 0/666 useless extension candidates. Maximal degree in co-relation 2785. Up to 440 conditions per place. [2023-08-31 23:57:15,362 INFO L137 encePairwiseOnDemand]: 458/475 looper letters, 116 selfloop transitions, 42 changer transitions 0/160 dead transitions. [2023-08-31 23:57:15,362 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 160 transitions, 1581 flow [2023-08-31 23:57:15,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-31 23:57:15,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-31 23:57:15,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2143 transitions. [2023-08-31 23:57:15,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34704453441295546 [2023-08-31 23:57:15,373 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2143 transitions. [2023-08-31 23:57:15,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2143 transitions. [2023-08-31 23:57:15,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:57:15,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2143 transitions. [2023-08-31 23:57:15,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 164.84615384615384) internal successors, (2143), 13 states have internal predecessors, (2143), 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) [2023-08-31 23:57:15,378 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 475.0) internal successors, (6650), 14 states have internal predecessors, (6650), 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) [2023-08-31 23:57:15,378 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 475.0) internal successors, (6650), 14 states have internal predecessors, (6650), 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) [2023-08-31 23:57:15,378 INFO L175 Difference]: Start difference. First operand has 112 places, 109 transitions, 945 flow. Second operand 13 states and 2143 transitions. [2023-08-31 23:57:15,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 160 transitions, 1581 flow [2023-08-31 23:57:15,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 160 transitions, 1511 flow, removed 23 selfloop flow, removed 5 redundant places. [2023-08-31 23:57:15,386 INFO L231 Difference]: Finished difference. Result has 122 places, 121 transitions, 1097 flow [2023-08-31 23:57:15,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=875, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1097, PETRI_PLACES=122, PETRI_TRANSITIONS=121} [2023-08-31 23:57:15,386 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 36 predicate places. [2023-08-31 23:57:15,386 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 121 transitions, 1097 flow [2023-08-31 23:57:15,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 159.5) internal successors, (2233), 14 states have internal predecessors, (2233), 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) [2023-08-31 23:57:15,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:57:15,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:57:15,401 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 (29)] Forceful destruction successful, exit code 0 [2023-08-31 23:57:15,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /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 [2023-08-31 23:57:15,592 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-31 23:57:15,592 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:57:15,592 INFO L85 PathProgramCache]: Analyzing trace with hash -2136390025, now seen corresponding path program 7 times [2023-08-31 23:57:15,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:57:15,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1523510165] [2023-08-31 23:57:15,593 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-31 23:57:15,593 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 [2023-08-31 23:57:15,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:57:15,593 INFO L229 MonitoredProcess]: Starting monitored process 30 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) [2023-08-31 23:57:15,594 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 (30)] Waiting until timeout for monitored process [2023-08-31 23:57:16,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:57:16,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 79 conjunts are in the unsatisfiable core [2023-08-31 23:57:16,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:57:16,154 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 63 [2023-08-31 23:57:16,175 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-31 23:57:16,176 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 55 [2023-08-31 23:57:16,258 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-08-31 23:57:16,258 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2023-08-31 23:57:16,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:57:16,537 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 63 treesize of output 51 [2023-08-31 23:57:16,820 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 81 [2023-08-31 23:57:17,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:57:17,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:57:17,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:57:17,012 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 23:57:17,012 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 23:57:17,013 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 77 [2023-08-31 23:57:17,404 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 30 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 105 [2023-08-31 23:57:17,562 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2023-08-31 23:57:17,562 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2023-08-31 23:57:17,651 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 185 treesize of output 113 [2023-08-31 23:57:17,828 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 215 treesize of output 211 [2023-08-31 23:57:17,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:57:17,913 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:57:17,913 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:57:17,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1523510165] [2023-08-31 23:57:17,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1523510165] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:57:17,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:57:17,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-08-31 23:57:17,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115516233] [2023-08-31 23:57:17,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:57:17,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-31 23:57:17,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:57:17,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-31 23:57:17,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-08-31 23:57:23,951 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 475 [2023-08-31 23:57:23,952 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 121 transitions, 1097 flow. Second operand has 14 states, 14 states have (on average 159.5) internal successors, (2233), 14 states have internal predecessors, (2233), 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) [2023-08-31 23:57:23,952 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:57:23,952 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 475 [2023-08-31 23:57:23,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:57:31,033 INFO L130 PetriNetUnfolder]: 253/681 cut-off events. [2023-08-31 23:57:31,033 INFO L131 PetriNetUnfolder]: For 2304/2304 co-relation queries the response was YES. [2023-08-31 23:57:31,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2963 conditions, 681 events. 253/681 cut-off events. For 2304/2304 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 4074 event pairs, 71 based on Foata normal form. 0/672 useless extension candidates. Maximal degree in co-relation 2926. Up to 478 conditions per place. [2023-08-31 23:57:31,036 INFO L137 encePairwiseOnDemand]: 458/475 looper letters, 119 selfloop transitions, 42 changer transitions 0/163 dead transitions. [2023-08-31 23:57:31,036 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 163 transitions, 1691 flow [2023-08-31 23:57:31,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-31 23:57:31,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-31 23:57:31,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2141 transitions. [2023-08-31 23:57:31,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3467206477732794 [2023-08-31 23:57:31,039 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2141 transitions. [2023-08-31 23:57:31,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2141 transitions. [2023-08-31 23:57:31,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:57:31,039 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2141 transitions. [2023-08-31 23:57:31,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 164.69230769230768) internal successors, (2141), 13 states have internal predecessors, (2141), 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) [2023-08-31 23:57:31,043 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 475.0) internal successors, (6650), 14 states have internal predecessors, (6650), 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) [2023-08-31 23:57:31,044 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 475.0) internal successors, (6650), 14 states have internal predecessors, (6650), 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) [2023-08-31 23:57:31,044 INFO L175 Difference]: Start difference. First operand has 122 places, 121 transitions, 1097 flow. Second operand 13 states and 2141 transitions. [2023-08-31 23:57:31,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 163 transitions, 1691 flow [2023-08-31 23:57:31,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 163 transitions, 1609 flow, removed 20 selfloop flow, removed 7 redundant places. [2023-08-31 23:57:31,052 INFO L231 Difference]: Finished difference. Result has 129 places, 125 transitions, 1174 flow [2023-08-31 23:57:31,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=1021, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1174, PETRI_PLACES=129, PETRI_TRANSITIONS=125} [2023-08-31 23:57:31,053 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 43 predicate places. [2023-08-31 23:57:31,053 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 125 transitions, 1174 flow [2023-08-31 23:57:31,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 159.5) internal successors, (2233), 14 states have internal predecessors, (2233), 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) [2023-08-31 23:57:31,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:57:31,054 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:57:31,068 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 (30)] Forceful destruction successful, exit code 0 [2023-08-31 23:57:31,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /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 [2023-08-31 23:57:31,257 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-31 23:57:31,257 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:57:31,257 INFO L85 PathProgramCache]: Analyzing trace with hash -389764353, now seen corresponding path program 2 times [2023-08-31 23:57:31,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:57:31,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [243944714] [2023-08-31 23:57:31,258 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-31 23:57:31,258 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 [2023-08-31 23:57:31,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:57:31,259 INFO L229 MonitoredProcess]: Starting monitored process 31 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) [2023-08-31 23:57:31,260 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 (31)] Waiting until timeout for monitored process [2023-08-31 23:57:31,711 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-31 23:57:31,711 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 23:57:31,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 39 conjunts are in the unsatisfiable core [2023-08-31 23:57:31,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:57:31,739 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 7 [2023-08-31 23:57:31,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:57:31,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:57:31,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:57:31,895 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 23:57:31,896 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 23:57:31,896 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 33 [2023-08-31 23:57:31,947 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-08-31 23:57:31,947 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 13 treesize of output 13 [2023-08-31 23:57:32,016 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 29 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 73 [2023-08-31 23:57:32,096 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 39 treesize of output 35 [2023-08-31 23:57:32,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:57:32,137 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:57:32,137 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:57:32,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [243944714] [2023-08-31 23:57:32,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [243944714] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:57:32,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:57:32,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 23:57:32,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441608104] [2023-08-31 23:57:32,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:57:32,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 23:57:32,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:57:32,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 23:57:32,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-08-31 23:57:34,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 475 [2023-08-31 23:57:34,591 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 125 transitions, 1174 flow. Second operand has 9 states, 9 states have (on average 167.22222222222223) internal successors, (1505), 9 states have internal predecessors, (1505), 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) [2023-08-31 23:57:34,591 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:57:34,591 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 475 [2023-08-31 23:57:34,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:57:38,120 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec, FloatRoundingMode], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-31 23:57:39,794 INFO L130 PetriNetUnfolder]: 256/730 cut-off events. [2023-08-31 23:57:39,794 INFO L131 PetriNetUnfolder]: For 2278/2280 co-relation queries the response was YES. [2023-08-31 23:57:39,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3137 conditions, 730 events. 256/730 cut-off events. For 2278/2280 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4633 event pairs, 38 based on Foata normal form. 3/725 useless extension candidates. Maximal degree in co-relation 3097. Up to 240 conditions per place. [2023-08-31 23:57:39,798 INFO L137 encePairwiseOnDemand]: 462/475 looper letters, 114 selfloop transitions, 60 changer transitions 0/179 dead transitions. [2023-08-31 23:57:39,798 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 179 transitions, 1908 flow [2023-08-31 23:57:39,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-31 23:57:39,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-31 23:57:39,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1384 transitions. [2023-08-31 23:57:39,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3642105263157895 [2023-08-31 23:57:39,800 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1384 transitions. [2023-08-31 23:57:39,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1384 transitions. [2023-08-31 23:57:39,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:57:39,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1384 transitions. [2023-08-31 23:57:39,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 173.0) internal successors, (1384), 8 states have internal predecessors, (1384), 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) [2023-08-31 23:57:39,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 475.0) internal successors, (4275), 9 states have internal predecessors, (4275), 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) [2023-08-31 23:57:39,803 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 475.0) internal successors, (4275), 9 states have internal predecessors, (4275), 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) [2023-08-31 23:57:39,803 INFO L175 Difference]: Start difference. First operand has 129 places, 125 transitions, 1174 flow. Second operand 8 states and 1384 transitions. [2023-08-31 23:57:39,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 179 transitions, 1908 flow [2023-08-31 23:57:39,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 179 transitions, 1816 flow, removed 4 selfloop flow, removed 9 redundant places. [2023-08-31 23:57:39,812 INFO L231 Difference]: Finished difference. Result has 130 places, 141 transitions, 1493 flow [2023-08-31 23:57:39,813 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=1037, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1493, PETRI_PLACES=130, PETRI_TRANSITIONS=141} [2023-08-31 23:57:39,813 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 44 predicate places. [2023-08-31 23:57:39,813 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 141 transitions, 1493 flow [2023-08-31 23:57:39,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 167.22222222222223) internal successors, (1505), 9 states have internal predecessors, (1505), 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) [2023-08-31 23:57:39,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:57:39,814 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:57:39,832 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 (31)] Forceful destruction successful, exit code 0 [2023-08-31 23:57:40,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /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 [2023-08-31 23:57:40,032 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-31 23:57:40,032 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:57:40,033 INFO L85 PathProgramCache]: Analyzing trace with hash -548233721, now seen corresponding path program 8 times [2023-08-31 23:57:40,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:57:40,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [735238552] [2023-08-31 23:57:40,033 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-31 23:57:40,033 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 [2023-08-31 23:57:40,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:57:40,034 INFO L229 MonitoredProcess]: Starting monitored process 32 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) [2023-08-31 23:57:40,035 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 (32)] Waiting until timeout for monitored process [2023-08-31 23:57:40,535 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-31 23:57:40,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 23:57:40,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 79 conjunts are in the unsatisfiable core [2023-08-31 23:57:40,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:57:40,629 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-08-31 23:57:40,629 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2023-08-31 23:57:40,647 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 63 [2023-08-31 23:57:40,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:57:40,656 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 63 treesize of output 51 [2023-08-31 23:57:40,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:57:40,910 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 63 treesize of output 51 [2023-08-31 23:57:41,172 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 81 [2023-08-31 23:57:41,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:57:41,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:57:41,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:57:41,364 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 23:57:41,364 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 23:57:41,365 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 77 [2023-08-31 23:57:41,621 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2023-08-31 23:57:41,622 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2023-08-31 23:57:41,868 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 31 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 105 [2023-08-31 23:57:42,017 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 185 treesize of output 113 [2023-08-31 23:57:42,125 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 215 treesize of output 211 [2023-08-31 23:57:42,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:57:42,193 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:57:42,194 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:57:42,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [735238552] [2023-08-31 23:57:42,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [735238552] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:57:42,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:57:42,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-08-31 23:57:42,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261416817] [2023-08-31 23:57:42,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:57:42,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-31 23:57:42,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:57:42,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-31 23:57:42,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-08-31 23:57:48,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 475 [2023-08-31 23:57:48,650 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 141 transitions, 1493 flow. Second operand has 14 states, 14 states have (on average 162.5) internal successors, (2275), 14 states have internal predecessors, (2275), 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) [2023-08-31 23:57:48,650 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:57:48,650 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 475 [2023-08-31 23:57:48,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:57:58,496 INFO L130 PetriNetUnfolder]: 274/767 cut-off events. [2023-08-31 23:57:58,497 INFO L131 PetriNetUnfolder]: For 3438/3438 co-relation queries the response was YES. [2023-08-31 23:57:58,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3544 conditions, 767 events. 274/767 cut-off events. For 3438/3438 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 4858 event pairs, 93 based on Foata normal form. 0/761 useless extension candidates. Maximal degree in co-relation 3501. Up to 558 conditions per place. [2023-08-31 23:57:58,500 INFO L137 encePairwiseOnDemand]: 458/475 looper letters, 146 selfloop transitions, 39 changer transitions 0/187 dead transitions. [2023-08-31 23:57:58,500 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 187 transitions, 2200 flow [2023-08-31 23:57:58,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-31 23:57:58,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-31 23:57:58,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2179 transitions. [2023-08-31 23:57:58,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3528744939271255 [2023-08-31 23:57:58,503 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2179 transitions. [2023-08-31 23:57:58,503 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2179 transitions. [2023-08-31 23:57:58,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:57:58,504 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2179 transitions. [2023-08-31 23:57:58,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 167.6153846153846) internal successors, (2179), 13 states have internal predecessors, (2179), 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) [2023-08-31 23:57:58,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 475.0) internal successors, (6650), 14 states have internal predecessors, (6650), 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) [2023-08-31 23:57:58,510 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 475.0) internal successors, (6650), 14 states have internal predecessors, (6650), 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) [2023-08-31 23:57:58,510 INFO L175 Difference]: Start difference. First operand has 130 places, 141 transitions, 1493 flow. Second operand 13 states and 2179 transitions. [2023-08-31 23:57:58,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 187 transitions, 2200 flow [2023-08-31 23:57:58,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 187 transitions, 2155 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-08-31 23:57:58,527 INFO L231 Difference]: Finished difference. Result has 142 places, 152 transitions, 1701 flow [2023-08-31 23:57:58,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=1455, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1701, PETRI_PLACES=142, PETRI_TRANSITIONS=152} [2023-08-31 23:57:58,528 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 56 predicate places. [2023-08-31 23:57:58,528 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 152 transitions, 1701 flow [2023-08-31 23:57:58,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 162.5) internal successors, (2275), 14 states have internal predecessors, (2275), 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) [2023-08-31 23:57:58,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:57:58,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:57:58,542 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 (32)] Forceful destruction successful, exit code 0 [2023-08-31 23:57:58,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /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 [2023-08-31 23:57:58,733 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-31 23:57:58,733 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:57:58,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1585015007, now seen corresponding path program 3 times [2023-08-31 23:57:58,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:57:58,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1088360849] [2023-08-31 23:57:58,734 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-31 23:57:58,734 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 [2023-08-31 23:57:58,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:57:58,735 INFO L229 MonitoredProcess]: Starting monitored process 33 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) [2023-08-31 23:57:58,735 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 (33)] Waiting until timeout for monitored process [2023-08-31 23:57:59,209 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-31 23:57:59,210 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 23:57:59,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 39 conjunts are in the unsatisfiable core [2023-08-31 23:57:59,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:57:59,239 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 7 [2023-08-31 23:57:59,345 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-08-31 23:57:59,345 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 13 treesize of output 13 [2023-08-31 23:57:59,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:57:59,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:57:59,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:57:59,451 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 23:57:59,451 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 23:57:59,452 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 33 [2023-08-31 23:57:59,499 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 39 treesize of output 35 [2023-08-31 23:57:59,559 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 29 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 73 [2023-08-31 23:57:59,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:57:59,662 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:57:59,662 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:57:59,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1088360849] [2023-08-31 23:57:59,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1088360849] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:57:59,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:57:59,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-31 23:57:59,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263644132] [2023-08-31 23:57:59,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:57:59,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 23:57:59,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:57:59,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 23:57:59,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-08-31 23:58:01,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 475 [2023-08-31 23:58:01,934 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 152 transitions, 1701 flow. Second operand has 9 states, 9 states have (on average 173.11111111111111) internal successors, (1558), 9 states have internal predecessors, (1558), 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) [2023-08-31 23:58:01,934 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:58:01,934 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 475 [2023-08-31 23:58:01,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:58:05,017 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec, FloatRoundingMode], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-31 23:58:07,212 INFO L130 PetriNetUnfolder]: 226/707 cut-off events. [2023-08-31 23:58:07,212 INFO L131 PetriNetUnfolder]: For 3695/3707 co-relation queries the response was YES. [2023-08-31 23:58:07,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3412 conditions, 707 events. 226/707 cut-off events. For 3695/3707 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4698 event pairs, 82 based on Foata normal form. 14/712 useless extension candidates. Maximal degree in co-relation 3365. Up to 315 conditions per place. [2023-08-31 23:58:07,216 INFO L137 encePairwiseOnDemand]: 464/475 looper letters, 119 selfloop transitions, 60 changer transitions 0/192 dead transitions. [2023-08-31 23:58:07,216 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 192 transitions, 2390 flow [2023-08-31 23:58:07,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-31 23:58:07,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-31 23:58:07,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1427 transitions. [2023-08-31 23:58:07,218 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3755263157894737 [2023-08-31 23:58:07,218 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1427 transitions. [2023-08-31 23:58:07,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1427 transitions. [2023-08-31 23:58:07,218 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:58:07,218 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1427 transitions. [2023-08-31 23:58:07,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 178.375) internal successors, (1427), 8 states have internal predecessors, (1427), 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) [2023-08-31 23:58:07,221 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 475.0) internal successors, (4275), 9 states have internal predecessors, (4275), 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) [2023-08-31 23:58:07,222 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 475.0) internal successors, (4275), 9 states have internal predecessors, (4275), 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) [2023-08-31 23:58:07,222 INFO L175 Difference]: Start difference. First operand has 142 places, 152 transitions, 1701 flow. Second operand 8 states and 1427 transitions. [2023-08-31 23:58:07,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 192 transitions, 2390 flow [2023-08-31 23:58:07,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 192 transitions, 2272 flow, removed 21 selfloop flow, removed 7 redundant places. [2023-08-31 23:58:07,241 INFO L231 Difference]: Finished difference. Result has 144 places, 157 transitions, 1816 flow [2023-08-31 23:58:07,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=1590, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1816, PETRI_PLACES=144, PETRI_TRANSITIONS=157} [2023-08-31 23:58:07,242 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 58 predicate places. [2023-08-31 23:58:07,242 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 157 transitions, 1816 flow [2023-08-31 23:58:07,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 173.11111111111111) internal successors, (1558), 9 states have internal predecessors, (1558), 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) [2023-08-31 23:58:07,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:58:07,243 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:58:07,261 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 (33)] Forceful destruction successful, exit code 0 [2023-08-31 23:58:07,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /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 [2023-08-31 23:58:07,459 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-31 23:58:07,459 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:58:07,459 INFO L85 PathProgramCache]: Analyzing trace with hash -389644943, now seen corresponding path program 9 times [2023-08-31 23:58:07,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:58:07,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1315164704] [2023-08-31 23:58:07,460 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-31 23:58:07,460 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 [2023-08-31 23:58:07,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:58:07,461 INFO L229 MonitoredProcess]: Starting monitored process 34 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) [2023-08-31 23:58:07,461 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 (34)] Waiting until timeout for monitored process [2023-08-31 23:58:07,935 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-31 23:58:07,935 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 23:58:07,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 79 conjunts are in the unsatisfiable core [2023-08-31 23:58:07,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:58:08,008 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-08-31 23:58:08,009 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2023-08-31 23:58:08,025 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 63 [2023-08-31 23:58:08,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:58:08,031 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 63 treesize of output 51 [2023-08-31 23:58:08,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:58:08,319 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 63 treesize of output 51 [2023-08-31 23:58:08,561 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 81 [2023-08-31 23:58:08,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:58:08,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:58:08,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:58:08,925 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 23:58:08,925 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 23:58:08,926 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 77 [2023-08-31 23:58:09,085 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2023-08-31 23:58:09,085 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2023-08-31 23:58:09,346 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 31 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 105 [2023-08-31 23:58:09,387 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 67 [2023-08-31 23:58:09,533 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 185 treesize of output 113 [2023-08-31 23:58:09,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:58:09,673 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:58:09,673 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:58:09,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1315164704] [2023-08-31 23:58:09,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1315164704] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:58:09,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:58:09,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-08-31 23:58:09,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399130309] [2023-08-31 23:58:09,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:58:09,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-31 23:58:09,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:58:09,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-31 23:58:09,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-08-31 23:58:16,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 475 [2023-08-31 23:58:16,395 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 157 transitions, 1816 flow. Second operand has 14 states, 14 states have (on average 162.5) internal successors, (2275), 14 states have internal predecessors, (2275), 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) [2023-08-31 23:58:16,395 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:58:16,395 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 475 [2023-08-31 23:58:16,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:58:26,016 INFO L130 PetriNetUnfolder]: 293/828 cut-off events. [2023-08-31 23:58:26,016 INFO L131 PetriNetUnfolder]: For 4792/4792 co-relation queries the response was YES. [2023-08-31 23:58:26,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4082 conditions, 828 events. 293/828 cut-off events. For 4792/4792 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 5439 event pairs, 126 based on Foata normal form. 0/821 useless extension candidates. Maximal degree in co-relation 4033. Up to 672 conditions per place. [2023-08-31 23:58:26,021 INFO L137 encePairwiseOnDemand]: 459/475 looper letters, 169 selfloop transitions, 34 changer transitions 0/205 dead transitions. [2023-08-31 23:58:26,021 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 205 transitions, 2651 flow [2023-08-31 23:58:26,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-31 23:58:26,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-31 23:58:26,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2175 transitions. [2023-08-31 23:58:26,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3522267206477733 [2023-08-31 23:58:26,024 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2175 transitions. [2023-08-31 23:58:26,024 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2175 transitions. [2023-08-31 23:58:26,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:58:26,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2175 transitions. [2023-08-31 23:58:26,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 167.30769230769232) internal successors, (2175), 13 states have internal predecessors, (2175), 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) [2023-08-31 23:58:26,031 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 475.0) internal successors, (6650), 14 states have internal predecessors, (6650), 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) [2023-08-31 23:58:26,031 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 475.0) internal successors, (6650), 14 states have internal predecessors, (6650), 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) [2023-08-31 23:58:26,031 INFO L175 Difference]: Start difference. First operand has 144 places, 157 transitions, 1816 flow. Second operand 13 states and 2175 transitions. [2023-08-31 23:58:26,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 205 transitions, 2651 flow [2023-08-31 23:58:26,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 205 transitions, 2441 flow, removed 37 selfloop flow, removed 6 redundant places. [2023-08-31 23:58:26,054 INFO L231 Difference]: Finished difference. Result has 155 places, 173 transitions, 1967 flow [2023-08-31 23:58:26,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=1650, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1967, PETRI_PLACES=155, PETRI_TRANSITIONS=173} [2023-08-31 23:58:26,055 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 69 predicate places. [2023-08-31 23:58:26,055 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 173 transitions, 1967 flow [2023-08-31 23:58:26,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 162.5) internal successors, (2275), 14 states have internal predecessors, (2275), 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) [2023-08-31 23:58:26,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:58:26,055 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:58:26,069 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 (34)] Forceful destruction successful, exit code 0 [2023-08-31 23:58:26,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /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 [2023-08-31 23:58:26,261 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-31 23:58:26,261 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:58:26,261 INFO L85 PathProgramCache]: Analyzing trace with hash -586448953, now seen corresponding path program 10 times [2023-08-31 23:58:26,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:58:26,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [860155396] [2023-08-31 23:58:26,262 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-31 23:58:26,262 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 [2023-08-31 23:58:26,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:58:26,263 INFO L229 MonitoredProcess]: Starting monitored process 35 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) [2023-08-31 23:58:26,263 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 (35)] Waiting until timeout for monitored process [2023-08-31 23:58:26,837 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-31 23:58:26,838 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 23:58:26,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 79 conjunts are in the unsatisfiable core [2023-08-31 23:58:26,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:58:26,897 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 63 [2023-08-31 23:58:26,918 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-31 23:58:26,918 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 55 [2023-08-31 23:58:26,994 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-08-31 23:58:26,994 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2023-08-31 23:58:27,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:58:27,251 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 63 treesize of output 51 [2023-08-31 23:58:27,609 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 81 [2023-08-31 23:58:27,982 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2023-08-31 23:58:27,982 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2023-08-31 23:58:28,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:58:28,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:58:28,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:58:28,098 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 23:58:28,099 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 23:58:28,100 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 77 [2023-08-31 23:58:28,390 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 67 [2023-08-31 23:58:28,440 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 31 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 105 [2023-08-31 23:58:28,581 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 185 treesize of output 113 [2023-08-31 23:58:28,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:58:28,728 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:58:28,729 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:58:28,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [860155396] [2023-08-31 23:58:28,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [860155396] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:58:28,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:58:28,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-08-31 23:58:28,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115705764] [2023-08-31 23:58:28,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:58:28,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-31 23:58:28,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:58:28,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-31 23:58:28,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-08-31 23:58:35,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 475 [2023-08-31 23:58:35,299 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 173 transitions, 1967 flow. Second operand has 14 states, 14 states have (on average 162.5) internal successors, (2275), 14 states have internal predecessors, (2275), 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) [2023-08-31 23:58:35,299 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:58:35,299 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 475 [2023-08-31 23:58:35,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:58:42,742 INFO L130 PetriNetUnfolder]: 301/858 cut-off events. [2023-08-31 23:58:42,742 INFO L131 PetriNetUnfolder]: For 4966/4966 co-relation queries the response was YES. [2023-08-31 23:58:42,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4271 conditions, 858 events. 301/858 cut-off events. For 4966/4966 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 5738 event pairs, 140 based on Foata normal form. 0/851 useless extension candidates. Maximal degree in co-relation 4218. Up to 722 conditions per place. [2023-08-31 23:58:42,747 INFO L137 encePairwiseOnDemand]: 460/475 looper letters, 178 selfloop transitions, 28 changer transitions 0/208 dead transitions. [2023-08-31 23:58:42,747 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 208 transitions, 2651 flow [2023-08-31 23:58:42,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-31 23:58:42,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-31 23:58:42,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2168 transitions. [2023-08-31 23:58:42,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35109311740890686 [2023-08-31 23:58:42,749 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2168 transitions. [2023-08-31 23:58:42,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2168 transitions. [2023-08-31 23:58:42,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:58:42,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2168 transitions. [2023-08-31 23:58:42,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 166.76923076923077) internal successors, (2168), 13 states have internal predecessors, (2168), 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) [2023-08-31 23:58:42,756 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 475.0) internal successors, (6650), 14 states have internal predecessors, (6650), 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) [2023-08-31 23:58:42,757 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 475.0) internal successors, (6650), 14 states have internal predecessors, (6650), 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) [2023-08-31 23:58:42,757 INFO L175 Difference]: Start difference. First operand has 155 places, 173 transitions, 1967 flow. Second operand 13 states and 2168 transitions. [2023-08-31 23:58:42,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 208 transitions, 2651 flow [2023-08-31 23:58:42,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 208 transitions, 2563 flow, removed 22 selfloop flow, removed 7 redundant places. [2023-08-31 23:58:42,804 INFO L231 Difference]: Finished difference. Result has 165 places, 182 transitions, 2083 flow [2023-08-31 23:58:42,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=1880, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2083, PETRI_PLACES=165, PETRI_TRANSITIONS=182} [2023-08-31 23:58:42,805 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 79 predicate places. [2023-08-31 23:58:42,805 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 182 transitions, 2083 flow [2023-08-31 23:58:42,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 162.5) internal successors, (2275), 14 states have internal predecessors, (2275), 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) [2023-08-31 23:58:42,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:58:42,805 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:58:42,827 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 (35)] Forceful destruction successful, exit code 0 [2023-08-31 23:58:43,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /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 [2023-08-31 23:58:43,021 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-31 23:58:43,022 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:58:43,022 INFO L85 PathProgramCache]: Analyzing trace with hash -734065619, now seen corresponding path program 11 times [2023-08-31 23:58:43,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:58:43,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [178201659] [2023-08-31 23:58:43,023 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-31 23:58:43,023 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 [2023-08-31 23:58:43,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:58:43,023 INFO L229 MonitoredProcess]: Starting monitored process 36 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) [2023-08-31 23:58:43,025 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 (36)] Waiting until timeout for monitored process [2023-08-31 23:58:43,518 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-31 23:58:43,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 23:58:43,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 78 conjunts are in the unsatisfiable core [2023-08-31 23:58:43,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:58:43,573 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 63 [2023-08-31 23:58:43,601 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-31 23:58:43,602 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 55 [2023-08-31 23:58:43,669 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-08-31 23:58:43,670 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2023-08-31 23:58:43,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:58:43,912 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 63 treesize of output 51 [2023-08-31 23:58:44,188 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 81 [2023-08-31 23:58:44,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:58:44,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:58:44,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:58:44,499 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 23:58:44,500 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 23:58:44,500 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 77 [2023-08-31 23:58:44,766 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2023-08-31 23:58:44,767 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2023-08-31 23:58:44,938 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 31 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 105 [2023-08-31 23:58:44,977 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 67 [2023-08-31 23:58:45,117 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 185 treesize of output 113 [2023-08-31 23:58:45,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:58:45,252 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:58:45,252 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:58:45,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [178201659] [2023-08-31 23:58:45,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [178201659] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:58:45,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:58:45,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-08-31 23:58:45,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977886645] [2023-08-31 23:58:45,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:58:45,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-31 23:58:45,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:58:45,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-31 23:58:45,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-08-31 23:58:51,168 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 475 [2023-08-31 23:58:51,169 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 182 transitions, 2083 flow. Second operand has 14 states, 14 states have (on average 159.5) internal successors, (2233), 14 states have internal predecessors, (2233), 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) [2023-08-31 23:58:51,169 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:58:51,169 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 475 [2023-08-31 23:58:51,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:59:00,023 INFO L130 PetriNetUnfolder]: 315/907 cut-off events. [2023-08-31 23:59:00,024 INFO L131 PetriNetUnfolder]: For 5788/5788 co-relation queries the response was YES. [2023-08-31 23:59:00,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4581 conditions, 907 events. 315/907 cut-off events. For 5788/5788 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 6200 event pairs, 136 based on Foata normal form. 0/900 useless extension candidates. Maximal degree in co-relation 4523. Up to 709 conditions per place. [2023-08-31 23:59:00,029 INFO L137 encePairwiseOnDemand]: 459/475 looper letters, 179 selfloop transitions, 42 changer transitions 0/223 dead transitions. [2023-08-31 23:59:00,029 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 223 transitions, 2875 flow [2023-08-31 23:59:00,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-31 23:59:00,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-31 23:59:00,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2137 transitions. [2023-08-31 23:59:00,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34607287449392715 [2023-08-31 23:59:00,031 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2137 transitions. [2023-08-31 23:59:00,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2137 transitions. [2023-08-31 23:59:00,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:59:00,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2137 transitions. [2023-08-31 23:59:00,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 164.3846153846154) internal successors, (2137), 13 states have internal predecessors, (2137), 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) [2023-08-31 23:59:00,036 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 475.0) internal successors, (6650), 14 states have internal predecessors, (6650), 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) [2023-08-31 23:59:00,036 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 475.0) internal successors, (6650), 14 states have internal predecessors, (6650), 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) [2023-08-31 23:59:00,036 INFO L175 Difference]: Start difference. First operand has 165 places, 182 transitions, 2083 flow. Second operand 13 states and 2137 transitions. [2023-08-31 23:59:00,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 223 transitions, 2875 flow [2023-08-31 23:59:00,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 223 transitions, 2792 flow, removed 22 selfloop flow, removed 7 redundant places. [2023-08-31 23:59:00,059 INFO L231 Difference]: Finished difference. Result has 173 places, 195 transitions, 2312 flow [2023-08-31 23:59:00,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=2000, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2312, PETRI_PLACES=173, PETRI_TRANSITIONS=195} [2023-08-31 23:59:00,060 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 87 predicate places. [2023-08-31 23:59:00,060 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 195 transitions, 2312 flow [2023-08-31 23:59:00,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 159.5) internal successors, (2233), 14 states have internal predecessors, (2233), 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) [2023-08-31 23:59:00,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:59:00,060 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:59:00,072 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 (36)] Forceful destruction successful, exit code 0 [2023-08-31 23:59:00,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /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 [2023-08-31 23:59:00,261 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-31 23:59:00,261 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:59:00,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1454659907, now seen corresponding path program 12 times [2023-08-31 23:59:00,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:59:00,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1266981692] [2023-08-31 23:59:00,262 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-31 23:59:00,262 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 [2023-08-31 23:59:00,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:59:00,262 INFO L229 MonitoredProcess]: Starting monitored process 37 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) [2023-08-31 23:59:00,264 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 (37)] Waiting until timeout for monitored process [2023-08-31 23:59:00,767 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-08-31 23:59:00,768 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 23:59:00,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 79 conjunts are in the unsatisfiable core [2023-08-31 23:59:00,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:59:00,857 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-08-31 23:59:00,857 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2023-08-31 23:59:00,884 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 63 [2023-08-31 23:59:00,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:59:00,893 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 63 treesize of output 51 [2023-08-31 23:59:01,149 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:59:01,150 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 63 treesize of output 51 [2023-08-31 23:59:01,410 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 81 [2023-08-31 23:59:01,657 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2023-08-31 23:59:01,658 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2023-08-31 23:59:01,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:59:01,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:59:01,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:59:01,868 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 23:59:01,869 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 23:59:01,869 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 77 [2023-08-31 23:59:02,165 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 67 [2023-08-31 23:59:02,208 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 31 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 105 [2023-08-31 23:59:02,344 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 185 treesize of output 113 [2023-08-31 23:59:02,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:59:02,485 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:59:02,485 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:59:02,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1266981692] [2023-08-31 23:59:02,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1266981692] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:59:02,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:59:02,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-08-31 23:59:02,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597444714] [2023-08-31 23:59:02,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:59:02,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-31 23:59:02,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:59:02,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-31 23:59:02,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-08-31 23:59:08,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 475 [2023-08-31 23:59:08,295 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 195 transitions, 2312 flow. Second operand has 14 states, 14 states have (on average 162.5) internal successors, (2275), 14 states have internal predecessors, (2275), 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) [2023-08-31 23:59:08,295 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:59:08,295 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 475 [2023-08-31 23:59:08,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:59:10,778 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec, FloatRoundingMode], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-31 23:59:17,203 INFO L130 PetriNetUnfolder]: 333/962 cut-off events. [2023-08-31 23:59:17,203 INFO L131 PetriNetUnfolder]: For 6800/6800 co-relation queries the response was YES. [2023-08-31 23:59:17,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4978 conditions, 962 events. 333/962 cut-off events. For 6800/6800 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 6731 event pairs, 162 based on Foata normal form. 0/955 useless extension candidates. Maximal degree in co-relation 4917. Up to 825 conditions per place. [2023-08-31 23:59:17,209 INFO L137 encePairwiseOnDemand]: 460/475 looper letters, 201 selfloop transitions, 33 changer transitions 0/236 dead transitions. [2023-08-31 23:59:17,209 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 236 transitions, 3147 flow [2023-08-31 23:59:17,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-31 23:59:17,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-31 23:59:17,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2493 transitions. [2023-08-31 23:59:17,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34989473684210526 [2023-08-31 23:59:17,212 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2493 transitions. [2023-08-31 23:59:17,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2493 transitions. [2023-08-31 23:59:17,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:59:17,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2493 transitions. [2023-08-31 23:59:17,215 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 166.2) internal successors, (2493), 15 states have internal predecessors, (2493), 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) [2023-08-31 23:59:17,219 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 475.0) internal successors, (7600), 16 states have internal predecessors, (7600), 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) [2023-08-31 23:59:17,219 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 475.0) internal successors, (7600), 16 states have internal predecessors, (7600), 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) [2023-08-31 23:59:17,220 INFO L175 Difference]: Start difference. First operand has 173 places, 195 transitions, 2312 flow. Second operand 15 states and 2493 transitions. [2023-08-31 23:59:17,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 236 transitions, 3147 flow [2023-08-31 23:59:17,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 236 transitions, 3032 flow, removed 37 selfloop flow, removed 7 redundant places. [2023-08-31 23:59:17,257 INFO L231 Difference]: Finished difference. Result has 187 places, 208 transitions, 2489 flow [2023-08-31 23:59:17,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=2203, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2489, PETRI_PLACES=187, PETRI_TRANSITIONS=208} [2023-08-31 23:59:17,258 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 101 predicate places. [2023-08-31 23:59:17,258 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 208 transitions, 2489 flow [2023-08-31 23:59:17,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 162.5) internal successors, (2275), 14 states have internal predecessors, (2275), 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) [2023-08-31 23:59:17,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:59:17,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:59:17,278 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 (37)] Forceful destruction successful, exit code 0 [2023-08-31 23:59:17,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /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 [2023-08-31 23:59:17,476 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-31 23:59:17,476 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:59:17,476 INFO L85 PathProgramCache]: Analyzing trace with hash -354902209, now seen corresponding path program 13 times [2023-08-31 23:59:17,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:59:17,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1980892958] [2023-08-31 23:59:17,476 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-31 23:59:17,477 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 [2023-08-31 23:59:17,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:59:17,477 INFO L229 MonitoredProcess]: Starting monitored process 38 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) [2023-08-31 23:59:17,478 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 (38)] Waiting until timeout for monitored process [2023-08-31 23:59:18,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:59:18,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 79 conjunts are in the unsatisfiable core [2023-08-31 23:59:18,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:59:18,119 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 63 [2023-08-31 23:59:18,138 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-31 23:59:18,139 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 55 [2023-08-31 23:59:18,201 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-08-31 23:59:18,201 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2023-08-31 23:59:18,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:59:18,454 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 63 treesize of output 51 [2023-08-31 23:59:18,689 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 81 [2023-08-31 23:59:19,054 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2023-08-31 23:59:19,054 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2023-08-31 23:59:19,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:59:19,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:59:19,157 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:59:19,158 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 23:59:19,158 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 23:59:19,159 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 77 [2023-08-31 23:59:19,440 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 67 [2023-08-31 23:59:19,488 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 31 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 105 [2023-08-31 23:59:19,643 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 185 treesize of output 113 [2023-08-31 23:59:19,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:59:19,776 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:59:19,776 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:59:19,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1980892958] [2023-08-31 23:59:19,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1980892958] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:59:19,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:59:19,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-08-31 23:59:19,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341945625] [2023-08-31 23:59:19,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:59:19,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-31 23:59:19,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:59:19,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-31 23:59:19,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-08-31 23:59:28,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 475 [2023-08-31 23:59:28,535 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 208 transitions, 2489 flow. Second operand has 14 states, 14 states have (on average 162.5) internal successors, (2275), 14 states have internal predecessors, (2275), 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) [2023-08-31 23:59:28,535 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:59:28,535 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 475 [2023-08-31 23:59:28,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:59:31,214 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec, FloatRoundingMode], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-31 23:59:32,559 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec, FloatRoundingMode], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-31 23:59:37,343 INFO L130 PetriNetUnfolder]: 351/1016 cut-off events. [2023-08-31 23:59:37,343 INFO L131 PetriNetUnfolder]: For 7765/7765 co-relation queries the response was YES. [2023-08-31 23:59:37,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5337 conditions, 1016 events. 351/1016 cut-off events. For 7765/7765 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 7290 event pairs, 170 based on Foata normal form. 0/1009 useless extension candidates. Maximal degree in co-relation 5268. Up to 878 conditions per place. [2023-08-31 23:59:37,349 INFO L137 encePairwiseOnDemand]: 460/475 looper letters, 211 selfloop transitions, 32 changer transitions 0/245 dead transitions. [2023-08-31 23:59:37,350 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 245 transitions, 3314 flow [2023-08-31 23:59:37,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-31 23:59:37,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-31 23:59:37,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2332 transitions. [2023-08-31 23:59:37,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3506766917293233 [2023-08-31 23:59:37,353 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2332 transitions. [2023-08-31 23:59:37,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2332 transitions. [2023-08-31 23:59:37,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:59:37,354 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2332 transitions. [2023-08-31 23:59:37,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 166.57142857142858) internal successors, (2332), 14 states have internal predecessors, (2332), 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) [2023-08-31 23:59:37,360 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 475.0) internal successors, (7125), 15 states have internal predecessors, (7125), 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) [2023-08-31 23:59:37,361 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 475.0) internal successors, (7125), 15 states have internal predecessors, (7125), 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) [2023-08-31 23:59:37,361 INFO L175 Difference]: Start difference. First operand has 187 places, 208 transitions, 2489 flow. Second operand 14 states and 2332 transitions. [2023-08-31 23:59:37,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 245 transitions, 3314 flow [2023-08-31 23:59:37,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 245 transitions, 3204 flow, removed 37 selfloop flow, removed 6 redundant places. [2023-08-31 23:59:37,404 INFO L231 Difference]: Finished difference. Result has 199 places, 216 transitions, 2613 flow [2023-08-31 23:59:37,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=2383, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2613, PETRI_PLACES=199, PETRI_TRANSITIONS=216} [2023-08-31 23:59:37,405 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 113 predicate places. [2023-08-31 23:59:37,405 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 216 transitions, 2613 flow [2023-08-31 23:59:37,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 162.5) internal successors, (2275), 14 states have internal predecessors, (2275), 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) [2023-08-31 23:59:37,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:59:37,406 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:59:37,420 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 (38)] Ended with exit code 0 [2023-08-31 23:59:37,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /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 [2023-08-31 23:59:37,606 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-31 23:59:37,606 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:59:37,607 INFO L85 PathProgramCache]: Analyzing trace with hash -29564971, now seen corresponding path program 14 times [2023-08-31 23:59:37,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:59:37,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [824617973] [2023-08-31 23:59:37,607 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-31 23:59:37,607 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 [2023-08-31 23:59:37,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:59:37,608 INFO L229 MonitoredProcess]: Starting monitored process 39 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) [2023-08-31 23:59:37,611 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 (39)] Waiting until timeout for monitored process [2023-08-31 23:59:38,140 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-31 23:59:38,140 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 23:59:38,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 78 conjunts are in the unsatisfiable core [2023-08-31 23:59:38,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:59:38,213 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 63 [2023-08-31 23:59:38,229 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-31 23:59:38,230 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 55 [2023-08-31 23:59:38,284 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-08-31 23:59:38,285 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2023-08-31 23:59:38,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:59:38,536 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 63 treesize of output 51 [2023-08-31 23:59:38,775 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 81 [2023-08-31 23:59:39,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:59:39,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:59:39,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:59:39,100 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 23:59:39,100 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 23:59:39,101 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 77 [2023-08-31 23:59:39,197 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2023-08-31 23:59:39,200 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2023-08-31 23:59:39,490 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 67 [2023-08-31 23:59:39,535 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 31 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 105 [2023-08-31 23:59:39,686 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 185 treesize of output 113 [2023-08-31 23:59:39,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:59:39,831 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:59:39,831 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:59:39,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [824617973] [2023-08-31 23:59:39,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [824617973] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:59:39,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:59:39,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-08-31 23:59:39,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292330496] [2023-08-31 23:59:39,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:59:39,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-31 23:59:39,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:59:39,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-31 23:59:39,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-08-31 23:59:46,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 475 [2023-08-31 23:59:46,841 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 216 transitions, 2613 flow. Second operand has 14 states, 14 states have (on average 162.5) internal successors, (2275), 14 states have internal predecessors, (2275), 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) [2023-08-31 23:59:46,841 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:59:46,841 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 475 [2023-08-31 23:59:46,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:59:55,210 INFO L130 PetriNetUnfolder]: 361/1053 cut-off events. [2023-08-31 23:59:55,210 INFO L131 PetriNetUnfolder]: For 8746/8746 co-relation queries the response was YES. [2023-08-31 23:59:55,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5575 conditions, 1053 events. 361/1053 cut-off events. For 8746/8746 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 7650 event pairs, 184 based on Foata normal form. 0/1046 useless extension candidates. Maximal degree in co-relation 5501. Up to 888 conditions per place. [2023-08-31 23:59:55,216 INFO L137 encePairwiseOnDemand]: 459/475 looper letters, 219 selfloop transitions, 39 changer transitions 0/260 dead transitions. [2023-08-31 23:59:55,216 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 260 transitions, 3556 flow [2023-08-31 23:59:55,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-31 23:59:55,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-31 23:59:55,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2339 transitions. [2023-08-31 23:59:55,218 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35172932330827067 [2023-08-31 23:59:55,218 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2339 transitions. [2023-08-31 23:59:55,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2339 transitions. [2023-08-31 23:59:55,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:59:55,219 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2339 transitions. [2023-08-31 23:59:55,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 167.07142857142858) internal successors, (2339), 14 states have internal predecessors, (2339), 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) [2023-08-31 23:59:55,223 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 475.0) internal successors, (7125), 15 states have internal predecessors, (7125), 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) [2023-08-31 23:59:55,223 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 475.0) internal successors, (7125), 15 states have internal predecessors, (7125), 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) [2023-08-31 23:59:55,223 INFO L175 Difference]: Start difference. First operand has 199 places, 216 transitions, 2613 flow. Second operand 14 states and 2339 transitions. [2023-08-31 23:59:55,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 260 transitions, 3556 flow [2023-08-31 23:59:55,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 260 transitions, 3433 flow, removed 37 selfloop flow, removed 8 redundant places. [2023-08-31 23:59:55,260 INFO L231 Difference]: Finished difference. Result has 209 places, 229 transitions, 2840 flow [2023-08-31 23:59:55,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=2496, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2840, PETRI_PLACES=209, PETRI_TRANSITIONS=229} [2023-08-31 23:59:55,260 INFO L281 CegarLoopForPetriNet]: 86 programPoint places, 123 predicate places. [2023-08-31 23:59:55,261 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 229 transitions, 2840 flow [2023-08-31 23:59:55,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 162.5) internal successors, (2275), 14 states have internal predecessors, (2275), 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) [2023-08-31 23:59:55,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:59:55,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:59:55,274 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 (39)] Forceful destruction successful, exit code 0 [2023-08-31 23:59:55,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /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 [2023-08-31 23:59:55,461 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-08-31 23:59:55,462 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:59:55,462 INFO L85 PathProgramCache]: Analyzing trace with hash -848882735, now seen corresponding path program 15 times [2023-08-31 23:59:55,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-31 23:59:55,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1041787750] [2023-08-31 23:59:55,463 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-31 23:59:55,463 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 [2023-08-31 23:59:55,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-31 23:59:55,463 INFO L229 MonitoredProcess]: Starting monitored process 40 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) [2023-08-31 23:59:55,464 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 (40)] Waiting until timeout for monitored process [2023-08-31 23:59:55,983 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-31 23:59:55,983 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 23:59:55,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 79 conjunts are in the unsatisfiable core [2023-08-31 23:59:56,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 23:59:56,078 INFO L321 Elim1Store]: treesize reduction 44, result has 34.3 percent of original size [2023-08-31 23:59:56,078 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 43 [2023-08-31 23:59:56,099 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 28 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 63 [2023-08-31 23:59:56,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:59:56,105 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 63 treesize of output 51 [2023-08-31 23:59:56,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:59:56,318 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 63 treesize of output 51 [2023-08-31 23:59:56,766 INFO L321 Elim1Store]: treesize reduction 18, result has 41.9 percent of original size [2023-08-31 23:59:56,766 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 31 [2023-08-31 23:59:56,889 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 28 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 81 [2023-08-31 23:59:57,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:59:57,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:59:57,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 23:59:57,104 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 23:59:57,104 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-31 23:59:57,105 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 77 [2023-08-31 23:59:57,385 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 67 [2023-08-31 23:59:57,428 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 31 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 105 [2023-08-31 23:59:57,554 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 185 treesize of output 113 [2023-08-31 23:59:57,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:59:57,690 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 23:59:57,690 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-31 23:59:57,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1041787750] [2023-08-31 23:59:57,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1041787750] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:59:57,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:59:57,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-08-31 23:59:57,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889227815] [2023-08-31 23:59:57,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:59:57,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-31 23:59:57,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-31 23:59:57,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-31 23:59:57,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-09-01 00:00:04,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 475 [2023-09-01 00:00:04,534 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 229 transitions, 2840 flow. Second operand has 14 states, 14 states have (on average 162.5) internal successors, (2275), 14 states have internal predecessors, (2275), 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) [2023-09-01 00:00:04,534 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:00:04,534 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 475 [2023-09-01 00:00:04,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Killed by 15