./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_46-escape_racefree.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --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/goblint-regression/28-race_reach_46-escape_racefree.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 4b7c7619d813e48364b259b1a428c27bb8d838fdbf884f11806f1a0c23ff1cb9 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 04:13:23,797 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 04:13:23,800 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 04:13:23,845 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 04:13:23,845 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 04:13:23,848 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 04:13:23,850 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 04:13:23,852 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 04:13:23,855 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 04:13:23,859 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 04:13:23,860 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 04:13:23,862 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 04:13:23,863 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 04:13:23,864 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 04:13:23,866 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 04:13:23,871 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 04:13:23,872 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 04:13:23,873 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 04:13:23,875 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 04:13:23,879 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 04:13:23,882 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 04:13:23,891 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 04:13:23,892 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 04:13:23,893 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 04:13:23,899 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 04:13:23,900 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 04:13:23,900 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 04:13:23,902 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 04:13:23,903 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 04:13:23,903 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 04:13:23,904 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 04:13:23,905 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 04:13:23,907 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 04:13:23,908 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 04:13:23,908 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 04:13:23,909 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 04:13:23,909 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 04:13:23,909 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 04:13:23,910 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 04:13:23,910 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 04:13:23,911 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 04:13:23,913 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-30 04:13:23,946 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 04:13:23,946 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 04:13:23,947 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 04:13:23,947 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 04:13:23,948 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 04:13:23,948 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 04:13:23,949 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 04:13:23,949 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 04:13:23,949 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 04:13:23,950 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 04:13:23,950 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 04:13:23,951 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 04:13:23,951 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 04:13:23,951 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 04:13:23,951 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 04:13:23,951 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 04:13:23,952 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 04:13:23,952 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 04:13:23,952 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 04:13:23,952 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 04:13:23,952 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 04:13:23,953 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 04:13:23,953 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 04:13:23,953 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 04:13:23,953 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 04:13:23,953 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 04:13:23,954 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 04:13:23,954 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 04:13:23,954 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 04:13:23,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 04:13:23,954 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 04:13:23,955 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 04:13:23,955 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 04:13:23,955 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 04:13:23,955 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4b7c7619d813e48364b259b1a428c27bb8d838fdbf884f11806f1a0c23ff1cb9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 04:13:24,256 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 04:13:24,281 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 04:13:24,284 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 04:13:24,285 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 04:13:24,285 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 04:13:24,286 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_46-escape_racefree.i [2023-08-30 04:13:25,659 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 04:13:25,968 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 04:13:25,971 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_46-escape_racefree.i [2023-08-30 04:13:25,991 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f74d38cc1/91848092e54e4673b2fc5ed0a8516bed/FLAGc9b1927fd [2023-08-30 04:13:26,014 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f74d38cc1/91848092e54e4673b2fc5ed0a8516bed [2023-08-30 04:13:26,017 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 04:13:26,018 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 04:13:26,021 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 04:13:26,022 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 04:13:26,024 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 04:13:26,025 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:13:26" (1/1) ... [2023-08-30 04:13:26,026 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4215992d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:13:26, skipping insertion in model container [2023-08-30 04:13:26,026 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:13:26" (1/1) ... [2023-08-30 04:13:26,032 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 04:13:26,078 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 04:13:26,385 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_46-escape_racefree.i[30176,30189] [2023-08-30 04:13:26,408 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 04:13:26,425 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) [2023-08-30 04:13:26,426 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@ad4a4e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:13:26, skipping insertion in model container [2023-08-30 04:13:26,427 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 04:13:26,427 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-08-30 04:13:26,429 INFO L158 Benchmark]: Toolchain (without parser) took 409.88ms. Allocated memory is still 83.9MB. Free memory was 62.6MB in the beginning and 50.1MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-08-30 04:13:26,430 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 62.9MB. Free memory is still 40.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 04:13:26,431 INFO L158 Benchmark]: CACSL2BoogieTranslator took 406.10ms. Allocated memory is still 83.9MB. Free memory was 62.4MB in the beginning and 50.1MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-08-30 04:13:26,432 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 62.9MB. Free memory is still 40.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 406.10ms. Allocated memory is still 83.9MB. Free memory was 62.4MB in the beginning and 50.1MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 700]: 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/goblint-regression/28-race_reach_46-escape_racefree.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 4b7c7619d813e48364b259b1a428c27bb8d838fdbf884f11806f1a0c23ff1cb9 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 04:13:28,153 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 04:13:28,156 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 04:13:28,205 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 04:13:28,205 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 04:13:28,208 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 04:13:28,210 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 04:13:28,213 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 04:13:28,216 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 04:13:28,220 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 04:13:28,222 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 04:13:28,224 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 04:13:28,225 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 04:13:28,226 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 04:13:28,228 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 04:13:28,233 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 04:13:28,234 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 04:13:28,236 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 04:13:28,237 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 04:13:28,242 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 04:13:28,251 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 04:13:28,252 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 04:13:28,253 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 04:13:28,254 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 04:13:28,261 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 04:13:28,261 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 04:13:28,262 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 04:13:28,263 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 04:13:28,264 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 04:13:28,266 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 04:13:28,267 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 04:13:28,268 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 04:13:28,270 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 04:13:28,271 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 04:13:28,271 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 04:13:28,272 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 04:13:28,272 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 04:13:28,272 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 04:13:28,273 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 04:13:28,273 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 04:13:28,274 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 04:13:28,275 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-08-30 04:13:28,310 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 04:13:28,310 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 04:13:28,312 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 04:13:28,312 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 04:13:28,313 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 04:13:28,313 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 04:13:28,313 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 04:13:28,314 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 04:13:28,314 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 04:13:28,314 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 04:13:28,315 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 04:13:28,315 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 04:13:28,315 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 04:13:28,315 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 04:13:28,316 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 04:13:28,316 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 04:13:28,316 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 04:13:28,316 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 04:13:28,316 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 04:13:28,316 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 04:13:28,317 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-08-30 04:13:28,317 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-08-30 04:13:28,317 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 04:13:28,317 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 04:13:28,317 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 04:13:28,318 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 04:13:28,318 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 04:13:28,318 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 04:13:28,318 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 04:13:28,319 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 04:13:28,319 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-08-30 04:13:28,319 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-08-30 04:13:28,319 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 04:13:28,319 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 04:13:28,320 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 04:13:28,320 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-08-30 04:13:28,320 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 04:13:28,320 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4b7c7619d813e48364b259b1a428c27bb8d838fdbf884f11806f1a0c23ff1cb9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 04:13:28,631 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 04:13:28,653 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 04:13:28,655 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 04:13:28,657 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 04:13:28,657 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 04:13:28,658 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_46-escape_racefree.i [2023-08-30 04:13:29,933 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 04:13:30,193 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 04:13:30,194 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_46-escape_racefree.i [2023-08-30 04:13:30,219 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68ac178a6/47c60aeeb2e84e8780c1307d2883c737/FLAGd14ade2f6 [2023-08-30 04:13:30,230 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/68ac178a6/47c60aeeb2e84e8780c1307d2883c737 [2023-08-30 04:13:30,232 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 04:13:30,233 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 04:13:30,234 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 04:13:30,234 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 04:13:30,237 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 04:13:30,238 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:13:30" (1/1) ... [2023-08-30 04:13:30,238 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48373b59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:13:30, skipping insertion in model container [2023-08-30 04:13:30,239 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:13:30" (1/1) ... [2023-08-30 04:13:30,244 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 04:13:30,283 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 04:13:30,585 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_46-escape_racefree.i[30176,30189] [2023-08-30 04:13:30,613 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 04:13:30,637 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-08-30 04:13:30,649 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 04:13:30,679 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_46-escape_racefree.i[30176,30189] [2023-08-30 04:13:30,696 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 04:13:30,704 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 04:13:30,730 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_46-escape_racefree.i[30176,30189] [2023-08-30 04:13:30,735 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 04:13:30,770 INFO L208 MainTranslator]: Completed translation [2023-08-30 04:13:30,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:13:30 WrapperNode [2023-08-30 04:13:30,771 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 04:13:30,772 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 04:13:30,772 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 04:13:30,772 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 04:13:30,778 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:13:30" (1/1) ... [2023-08-30 04:13:30,799 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:13:30" (1/1) ... [2023-08-30 04:13:30,818 INFO L138 Inliner]: procedures = 174, calls = 39, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 72 [2023-08-30 04:13:30,818 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 04:13:30,819 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 04:13:30,819 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 04:13:30,820 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 04:13:30,827 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:13:30" (1/1) ... [2023-08-30 04:13:30,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:13:30" (1/1) ... [2023-08-30 04:13:30,831 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:13:30" (1/1) ... [2023-08-30 04:13:30,831 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:13:30" (1/1) ... [2023-08-30 04:13:30,838 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:13:30" (1/1) ... [2023-08-30 04:13:30,841 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:13:30" (1/1) ... [2023-08-30 04:13:30,844 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:13:30" (1/1) ... [2023-08-30 04:13:30,845 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:13:30" (1/1) ... [2023-08-30 04:13:30,848 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 04:13:30,849 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 04:13:30,849 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 04:13:30,849 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 04:13:30,850 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:13:30" (1/1) ... [2023-08-30 04:13:30,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 04:13:30,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 04:13:30,882 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) [2023-08-30 04:13:30,897 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 [2023-08-30 04:13:30,923 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-08-30 04:13:30,923 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 04:13:30,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 04:13:30,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 04:13:30,923 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-30 04:13:30,923 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-30 04:13:30,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 04:13:30,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-08-30 04:13:30,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-08-30 04:13:30,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-08-30 04:13:30,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 04:13:30,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 04:13:30,925 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 04:13:31,081 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 04:13:31,083 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 04:13:31,457 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 04:13:31,463 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 04:13:31,464 INFO L302 CfgBuilder]: Removed 8 assume(true) statements. [2023-08-30 04:13:31,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:13:31 BoogieIcfgContainer [2023-08-30 04:13:31,466 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 04:13:31,468 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 04:13:31,468 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 04:13:31,471 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 04:13:31,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 04:13:30" (1/3) ... [2023-08-30 04:13:31,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@558eb0c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 04:13:31, skipping insertion in model container [2023-08-30 04:13:31,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:13:30" (2/3) ... [2023-08-30 04:13:31,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@558eb0c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 04:13:31, skipping insertion in model container [2023-08-30 04:13:31,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:13:31" (3/3) ... [2023-08-30 04:13:31,473 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_46-escape_racefree.i [2023-08-30 04:13:31,486 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 04:13:31,487 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-08-30 04:13:31,487 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 04:13:31,559 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-30 04:13:31,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 123 transitions, 254 flow [2023-08-30 04:13:31,643 INFO L130 PetriNetUnfolder]: 9/122 cut-off events. [2023-08-30 04:13:31,643 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 04:13:31,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 122 events. 9/122 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 249 event pairs, 0 based on Foata normal form. 0/97 useless extension candidates. Maximal degree in co-relation 67. Up to 3 conditions per place. [2023-08-30 04:13:31,648 INFO L82 GeneralOperation]: Start removeDead. Operand has 118 places, 123 transitions, 254 flow [2023-08-30 04:13:31,655 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 113 places, 118 transitions, 242 flow [2023-08-30 04:13:31,659 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 04:13:31,672 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 113 places, 118 transitions, 242 flow [2023-08-30 04:13:31,675 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 113 places, 118 transitions, 242 flow [2023-08-30 04:13:31,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 113 places, 118 transitions, 242 flow [2023-08-30 04:13:31,701 INFO L130 PetriNetUnfolder]: 9/118 cut-off events. [2023-08-30 04:13:31,701 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 04:13:31,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123 conditions, 118 events. 9/118 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 242 event pairs, 0 based on Foata normal form. 0/94 useless extension candidates. Maximal degree in co-relation 67. Up to 3 conditions per place. [2023-08-30 04:13:31,704 INFO L119 LiptonReduction]: Number of co-enabled transitions 2132 [2023-08-30 04:13:47,477 INFO L134 LiptonReduction]: Checked pairs total: 4203 [2023-08-30 04:13:47,477 INFO L136 LiptonReduction]: Total number of compositions: 114 [2023-08-30 04:13:47,490 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 04:13:47,503 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;@6b8061a9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 04:13:47,503 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2023-08-30 04:13:47,505 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-30 04:13:47,505 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 04:13:47,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:13:47,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 04:13:47,506 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-08-30 04:13:47,511 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:13:47,512 INFO L85 PathProgramCache]: Analyzing trace with hash 468, now seen corresponding path program 1 times [2023-08-30 04:13:47,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 04:13:47,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [611217326] [2023-08-30 04:13:47,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:13:47,521 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 [2023-08-30 04:13:47,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 04:13:47,524 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) [2023-08-30 04:13:47,525 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 [2023-08-30 04:13:47,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:13:47,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2023-08-30 04:13:47,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 04:13:47,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:13:47,593 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 04:13:47,594 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 04:13:47,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [611217326] [2023-08-30 04:13:47,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [611217326] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:13:47,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:13:47,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 04:13:47,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728913643] [2023-08-30 04:13:47,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:13:47,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 04:13:47,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 04:13:47,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 04:13:47,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 04:13:47,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 237 [2023-08-30 04:13:47,652 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 42 transitions, 90 flow. Second operand has 2 states, 2 states have (on average 111.5) internal successors, (223), 2 states have internal predecessors, (223), 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) [2023-08-30 04:13:47,653 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:13:47,653 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 237 [2023-08-30 04:13:47,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:13:47,872 INFO L130 PetriNetUnfolder]: 84/213 cut-off events. [2023-08-30 04:13:47,873 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 04:13:47,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 410 conditions, 213 events. 84/213 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 935 event pairs, 84 based on Foata normal form. 8/137 useless extension candidates. Maximal degree in co-relation 396. Up to 192 conditions per place. [2023-08-30 04:13:47,876 INFO L137 encePairwiseOnDemand]: 223/237 looper letters, 23 selfloop transitions, 0 changer transitions 0/28 dead transitions. [2023-08-30 04:13:47,876 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 28 transitions, 108 flow [2023-08-30 04:13:47,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 04:13:47,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 04:13:47,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 259 transitions. [2023-08-30 04:13:47,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5464135021097046 [2023-08-30 04:13:47,890 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 259 transitions. [2023-08-30 04:13:47,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 259 transitions. [2023-08-30 04:13:47,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:13:47,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 259 transitions. [2023-08-30 04:13:47,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 129.5) internal successors, (259), 2 states have internal predecessors, (259), 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) [2023-08-30 04:13:47,915 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 237.0) internal successors, (711), 3 states have internal predecessors, (711), 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) [2023-08-30 04:13:47,916 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 237.0) internal successors, (711), 3 states have internal predecessors, (711), 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) [2023-08-30 04:13:47,918 INFO L175 Difference]: Start difference. First operand has 38 places, 42 transitions, 90 flow. Second operand 2 states and 259 transitions. [2023-08-30 04:13:47,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 28 transitions, 108 flow [2023-08-30 04:13:47,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 28 transitions, 104 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 04:13:47,924 INFO L231 Difference]: Finished difference. Result has 31 places, 28 transitions, 58 flow [2023-08-30 04:13:47,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=58, PETRI_PLACES=31, PETRI_TRANSITIONS=28} [2023-08-30 04:13:47,937 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -7 predicate places. [2023-08-30 04:13:47,937 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 28 transitions, 58 flow [2023-08-30 04:13:47,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 111.5) internal successors, (223), 2 states have internal predecessors, (223), 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) [2023-08-30 04:13:47,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:13:47,938 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 04:13:47,954 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 [2023-08-30 04:13:48,154 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 [2023-08-30 04:13:48,154 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-08-30 04:13:48,155 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:13:48,155 INFO L85 PathProgramCache]: Analyzing trace with hash 14205525, now seen corresponding path program 1 times [2023-08-30 04:13:48,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 04:13:48,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [693262400] [2023-08-30 04:13:48,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:13:48,157 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 [2023-08-30 04:13:48,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 04:13:48,158 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) [2023-08-30 04:13:48,161 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 [2023-08-30 04:13:48,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:13:48,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 04:13:48,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 04:13:48,301 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2023-08-30 04:13:48,303 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 1 case distinctions, treesize of input 9 treesize of output 19 [2023-08-30 04:13:48,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:13:48,318 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 04:13:48,318 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 04:13:48,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [693262400] [2023-08-30 04:13:48,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [693262400] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:13:48,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:13:48,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 04:13:48,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296494855] [2023-08-30 04:13:48,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:13:48,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 04:13:48,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 04:13:48,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 04:13:48,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 04:13:48,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 237 [2023-08-30 04:13:48,432 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 28 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 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) [2023-08-30 04:13:48,433 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:13:48,433 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 237 [2023-08-30 04:13:48,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:13:48,551 INFO L130 PetriNetUnfolder]: 72/188 cut-off events. [2023-08-30 04:13:48,552 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 04:13:48,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 358 conditions, 188 events. 72/188 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 791 event pairs, 72 based on Foata normal form. 0/122 useless extension candidates. Maximal degree in co-relation 355. Up to 165 conditions per place. [2023-08-30 04:13:48,555 INFO L137 encePairwiseOnDemand]: 234/237 looper letters, 20 selfloop transitions, 2 changer transitions 0/27 dead transitions. [2023-08-30 04:13:48,556 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 27 transitions, 100 flow [2023-08-30 04:13:48,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 04:13:48,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 04:13:48,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 335 transitions. [2023-08-30 04:13:48,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4711673699015471 [2023-08-30 04:13:48,563 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 335 transitions. [2023-08-30 04:13:48,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 335 transitions. [2023-08-30 04:13:48,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:13:48,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 335 transitions. [2023-08-30 04:13:48,566 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 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) [2023-08-30 04:13:48,569 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 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) [2023-08-30 04:13:48,569 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 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) [2023-08-30 04:13:48,569 INFO L175 Difference]: Start difference. First operand has 31 places, 28 transitions, 58 flow. Second operand 3 states and 335 transitions. [2023-08-30 04:13:48,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 27 transitions, 100 flow [2023-08-30 04:13:48,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 27 transitions, 100 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 04:13:48,571 INFO L231 Difference]: Finished difference. Result has 32 places, 27 transitions, 60 flow [2023-08-30 04:13:48,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=60, PETRI_PLACES=32, PETRI_TRANSITIONS=27} [2023-08-30 04:13:48,572 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -6 predicate places. [2023-08-30 04:13:48,572 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 27 transitions, 60 flow [2023-08-30 04:13:48,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 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) [2023-08-30 04:13:48,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:13:48,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 04:13:48,585 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 (3)] Forceful destruction successful, exit code 0 [2023-08-30 04:13:48,783 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 [2023-08-30 04:13:48,784 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-08-30 04:13:48,784 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:13:48,784 INFO L85 PathProgramCache]: Analyzing trace with hash 14205526, now seen corresponding path program 1 times [2023-08-30 04:13:48,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 04:13:48,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1603843763] [2023-08-30 04:13:48,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:13:48,786 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 [2023-08-30 04:13:48,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 04:13:48,787 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) [2023-08-30 04:13:48,790 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 [2023-08-30 04:13:48,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:13:48,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 04:13:48,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 04:13:48,899 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-30 04:13:48,900 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 1 case distinctions, treesize of input 9 treesize of output 15 [2023-08-30 04:13:48,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:13:48,926 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 04:13:48,926 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 04:13:48,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1603843763] [2023-08-30 04:13:48,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1603843763] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:13:48,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:13:48,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 04:13:48,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017264719] [2023-08-30 04:13:48,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:13:48,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 04:13:48,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 04:13:48,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 04:13:48,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 04:13:49,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 237 [2023-08-30 04:13:49,023 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 27 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 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) [2023-08-30 04:13:49,023 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:13:49,023 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 237 [2023-08-30 04:13:49,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:13:49,122 INFO L130 PetriNetUnfolder]: 60/163 cut-off events. [2023-08-30 04:13:49,122 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 04:13:49,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 311 conditions, 163 events. 60/163 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 656 event pairs, 60 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 307. Up to 140 conditions per place. [2023-08-30 04:13:49,123 INFO L137 encePairwiseOnDemand]: 234/237 looper letters, 19 selfloop transitions, 2 changer transitions 0/26 dead transitions. [2023-08-30 04:13:49,123 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 26 transitions, 100 flow [2023-08-30 04:13:49,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 04:13:49,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 04:13:49,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 343 transitions. [2023-08-30 04:13:49,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48241912798874825 [2023-08-30 04:13:49,125 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 343 transitions. [2023-08-30 04:13:49,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 343 transitions. [2023-08-30 04:13:49,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:13:49,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 343 transitions. [2023-08-30 04:13:49,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 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) [2023-08-30 04:13:49,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 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) [2023-08-30 04:13:49,128 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 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) [2023-08-30 04:13:49,129 INFO L175 Difference]: Start difference. First operand has 32 places, 27 transitions, 60 flow. Second operand 3 states and 343 transitions. [2023-08-30 04:13:49,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 26 transitions, 100 flow [2023-08-30 04:13:49,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 26 transitions, 96 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 04:13:49,130 INFO L231 Difference]: Finished difference. Result has 31 places, 26 transitions, 58 flow [2023-08-30 04:13:49,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=31, PETRI_TRANSITIONS=26} [2023-08-30 04:13:49,130 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -7 predicate places. [2023-08-30 04:13:49,131 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 26 transitions, 58 flow [2023-08-30 04:13:49,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 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) [2023-08-30 04:13:49,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:13:49,131 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 04:13:49,145 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 [2023-08-30 04:13:49,341 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 [2023-08-30 04:13:49,341 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-08-30 04:13:49,342 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:13:49,342 INFO L85 PathProgramCache]: Analyzing trace with hash 440370547, now seen corresponding path program 1 times [2023-08-30 04:13:49,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 04:13:49,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [303436904] [2023-08-30 04:13:49,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:13:49,343 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 [2023-08-30 04:13:49,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 04:13:49,344 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) [2023-08-30 04:13:49,347 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 [2023-08-30 04:13:49,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:13:49,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-30 04:13:49,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 04:13:49,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 04:13:49,490 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 41 treesize of output 37 [2023-08-30 04:13:49,497 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-08-30 04:13:49,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:13:49,597 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 04:13:49,597 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 04:13:49,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [303436904] [2023-08-30 04:13:49,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [303436904] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:13:49,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:13:49,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 04:13:49,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019748870] [2023-08-30 04:13:49,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:13:49,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 04:13:49,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 04:13:49,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 04:13:49,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 04:13:49,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 237 [2023-08-30 04:13:49,804 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 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) [2023-08-30 04:13:49,804 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:13:49,804 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 237 [2023-08-30 04:13:49,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:13:50,027 INFO L130 PetriNetUnfolder]: 62/209 cut-off events. [2023-08-30 04:13:50,027 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 04:13:50,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 372 conditions, 209 events. 62/209 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 969 event pairs, 23 based on Foata normal form. 0/148 useless extension candidates. Maximal degree in co-relation 368. Up to 85 conditions per place. [2023-08-30 04:13:50,029 INFO L137 encePairwiseOnDemand]: 231/237 looper letters, 29 selfloop transitions, 5 changer transitions 0/39 dead transitions. [2023-08-30 04:13:50,029 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 39 transitions, 155 flow [2023-08-30 04:13:50,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 04:13:50,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 04:13:50,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 347 transitions. [2023-08-30 04:13:50,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4880450070323488 [2023-08-30 04:13:50,031 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 347 transitions. [2023-08-30 04:13:50,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 347 transitions. [2023-08-30 04:13:50,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:13:50,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 347 transitions. [2023-08-30 04:13:50,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 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) [2023-08-30 04:13:50,034 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 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) [2023-08-30 04:13:50,034 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 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) [2023-08-30 04:13:50,035 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 58 flow. Second operand 3 states and 347 transitions. [2023-08-30 04:13:50,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 39 transitions, 155 flow [2023-08-30 04:13:50,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 39 transitions, 149 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 04:13:50,036 INFO L231 Difference]: Finished difference. Result has 33 places, 29 transitions, 88 flow [2023-08-30 04:13:50,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=33, PETRI_TRANSITIONS=29} [2023-08-30 04:13:50,037 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -5 predicate places. [2023-08-30 04:13:50,037 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 29 transitions, 88 flow [2023-08-30 04:13:50,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 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) [2023-08-30 04:13:50,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:13:50,038 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 04:13:50,050 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-08-30 04:13:50,248 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 [2023-08-30 04:13:50,249 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-08-30 04:13:50,249 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:13:50,249 INFO L85 PathProgramCache]: Analyzing trace with hash 440344243, now seen corresponding path program 1 times [2023-08-30 04:13:50,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 04:13:50,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [343772680] [2023-08-30 04:13:50,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:13:50,250 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 [2023-08-30 04:13:50,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 04:13:50,251 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) [2023-08-30 04:13:50,254 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 [2023-08-30 04:13:50,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:13:50,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 04:13:50,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 04:13:50,356 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2023-08-30 04:13:50,356 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 1 case distinctions, treesize of input 9 treesize of output 19 [2023-08-30 04:13:50,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:13:50,387 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 04:13:50,389 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 04:13:50,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [343772680] [2023-08-30 04:13:50,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [343772680] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:13:50,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:13:50,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 04:13:50,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43508542] [2023-08-30 04:13:50,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:13:50,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 04:13:50,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 04:13:50,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 04:13:50,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 04:13:50,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 237 [2023-08-30 04:13:50,537 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 29 transitions, 88 flow. Second operand has 5 states, 5 states have (on average 95.8) internal successors, (479), 5 states have internal predecessors, (479), 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) [2023-08-30 04:13:50,537 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:13:50,537 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 237 [2023-08-30 04:13:50,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:13:50,648 INFO L130 PetriNetUnfolder]: 52/161 cut-off events. [2023-08-30 04:13:50,649 INFO L131 PetriNetUnfolder]: For 33/33 co-relation queries the response was YES. [2023-08-30 04:13:50,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 349 conditions, 161 events. 52/161 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 629 event pairs, 16 based on Foata normal form. 0/136 useless extension candidates. Maximal degree in co-relation 344. Up to 124 conditions per place. [2023-08-30 04:13:50,650 INFO L137 encePairwiseOnDemand]: 231/237 looper letters, 21 selfloop transitions, 5 changer transitions 0/31 dead transitions. [2023-08-30 04:13:50,650 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 31 transitions, 146 flow [2023-08-30 04:13:50,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 04:13:50,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 04:13:50,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 500 transitions. [2023-08-30 04:13:50,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4219409282700422 [2023-08-30 04:13:50,653 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 500 transitions. [2023-08-30 04:13:50,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 500 transitions. [2023-08-30 04:13:50,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:13:50,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 500 transitions. [2023-08-30 04:13:50,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 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) [2023-08-30 04:13:50,657 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 237.0) internal successors, (1422), 6 states have internal predecessors, (1422), 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) [2023-08-30 04:13:50,657 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 237.0) internal successors, (1422), 6 states have internal predecessors, (1422), 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) [2023-08-30 04:13:50,658 INFO L175 Difference]: Start difference. First operand has 33 places, 29 transitions, 88 flow. Second operand 5 states and 500 transitions. [2023-08-30 04:13:50,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 31 transitions, 146 flow [2023-08-30 04:13:50,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 31 transitions, 136 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 04:13:50,660 INFO L231 Difference]: Finished difference. Result has 33 places, 27 transitions, 84 flow [2023-08-30 04:13:50,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=84, PETRI_PLACES=33, PETRI_TRANSITIONS=27} [2023-08-30 04:13:50,661 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -5 predicate places. [2023-08-30 04:13:50,661 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 27 transitions, 84 flow [2023-08-30 04:13:50,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 95.8) internal successors, (479), 5 states have internal predecessors, (479), 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) [2023-08-30 04:13:50,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:13:50,661 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 04:13:50,669 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 [2023-08-30 04:13:50,862 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 [2023-08-30 04:13:50,862 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-08-30 04:13:50,863 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:13:50,863 INFO L85 PathProgramCache]: Analyzing trace with hash 440344244, now seen corresponding path program 1 times [2023-08-30 04:13:50,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 04:13:50,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1545981883] [2023-08-30 04:13:50,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:13:50,864 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 [2023-08-30 04:13:50,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 04:13:50,865 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) [2023-08-30 04:13:50,868 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 [2023-08-30 04:13:50,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:13:50,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 04:13:50,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 04:13:50,968 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-30 04:13:50,969 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 1 case distinctions, treesize of input 9 treesize of output 15 [2023-08-30 04:13:51,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:13:51,025 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 04:13:51,026 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 04:13:51,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1545981883] [2023-08-30 04:13:51,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1545981883] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:13:51,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:13:51,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 04:13:51,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640902327] [2023-08-30 04:13:51,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:13:51,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 04:13:51,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 04:13:51,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 04:13:51,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 04:13:51,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 237 [2023-08-30 04:13:51,201 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 27 transitions, 84 flow. Second operand has 5 states, 5 states have (on average 102.8) internal successors, (514), 5 states have internal predecessors, (514), 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) [2023-08-30 04:13:51,202 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:13:51,202 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 237 [2023-08-30 04:13:51,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:13:51,332 INFO L130 PetriNetUnfolder]: 42/134 cut-off events. [2023-08-30 04:13:51,332 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2023-08-30 04:13:51,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 289 conditions, 134 events. 42/134 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 488 event pairs, 13 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 284. Up to 101 conditions per place. [2023-08-30 04:13:51,333 INFO L137 encePairwiseOnDemand]: 231/237 looper letters, 19 selfloop transitions, 5 changer transitions 0/29 dead transitions. [2023-08-30 04:13:51,333 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 29 transitions, 138 flow [2023-08-30 04:13:51,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 04:13:51,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 04:13:51,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 635 transitions. [2023-08-30 04:13:51,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44655414908579466 [2023-08-30 04:13:51,335 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 635 transitions. [2023-08-30 04:13:51,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 635 transitions. [2023-08-30 04:13:51,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:13:51,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 635 transitions. [2023-08-30 04:13:51,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 105.83333333333333) internal successors, (635), 6 states have internal predecessors, (635), 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) [2023-08-30 04:13:51,339 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 237.0) internal successors, (1659), 7 states have internal predecessors, (1659), 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) [2023-08-30 04:13:51,340 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 237.0) internal successors, (1659), 7 states have internal predecessors, (1659), 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) [2023-08-30 04:13:51,340 INFO L175 Difference]: Start difference. First operand has 33 places, 27 transitions, 84 flow. Second operand 6 states and 635 transitions. [2023-08-30 04:13:51,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 29 transitions, 138 flow [2023-08-30 04:13:51,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 29 transitions, 128 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 04:13:51,341 INFO L231 Difference]: Finished difference. Result has 32 places, 25 transitions, 80 flow [2023-08-30 04:13:51,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=80, PETRI_PLACES=32, PETRI_TRANSITIONS=25} [2023-08-30 04:13:51,342 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -6 predicate places. [2023-08-30 04:13:51,342 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 25 transitions, 80 flow [2023-08-30 04:13:51,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 102.8) internal successors, (514), 5 states have internal predecessors, (514), 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) [2023-08-30 04:13:51,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:13:51,343 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 04:13:51,355 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 [2023-08-30 04:13:51,552 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 [2023-08-30 04:13:51,553 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-08-30 04:13:51,553 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:13:51,553 INFO L85 PathProgramCache]: Analyzing trace with hash -2045474933, now seen corresponding path program 1 times [2023-08-30 04:13:51,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 04:13:51,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [183339799] [2023-08-30 04:13:51,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:13:51,554 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 [2023-08-30 04:13:51,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 04:13:51,555 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) [2023-08-30 04:13:51,557 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 [2023-08-30 04:13:51,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:13:51,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 04:13:51,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 04:13:51,669 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-08-30 04:13:51,669 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 1 case distinctions, treesize of input 9 treesize of output 11 [2023-08-30 04:13:51,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:13:51,741 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 04:13:51,741 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 04:13:51,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [183339799] [2023-08-30 04:13:51,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [183339799] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:13:51,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:13:51,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 04:13:51,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64180758] [2023-08-30 04:13:51,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:13:51,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 04:13:51,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 04:13:51,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 04:13:51,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 04:13:51,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 237 [2023-08-30 04:13:51,836 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 25 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 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) [2023-08-30 04:13:51,837 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:13:51,837 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 237 [2023-08-30 04:13:51,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:13:51,903 INFO L130 PetriNetUnfolder]: 42/132 cut-off events. [2023-08-30 04:13:51,903 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2023-08-30 04:13:51,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 287 conditions, 132 events. 42/132 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 472 event pairs, 39 based on Foata normal form. 14/132 useless extension candidates. Maximal degree in co-relation 282. Up to 107 conditions per place. [2023-08-30 04:13:51,904 INFO L137 encePairwiseOnDemand]: 234/237 looper letters, 17 selfloop transitions, 3 changer transitions 0/24 dead transitions. [2023-08-30 04:13:51,905 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 24 transitions, 118 flow [2023-08-30 04:13:51,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 04:13:51,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 04:13:51,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 336 transitions. [2023-08-30 04:13:51,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47257383966244726 [2023-08-30 04:13:51,906 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 336 transitions. [2023-08-30 04:13:51,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 336 transitions. [2023-08-30 04:13:51,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:13:51,907 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 336 transitions. [2023-08-30 04:13:51,908 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 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) [2023-08-30 04:13:51,909 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 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) [2023-08-30 04:13:51,909 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 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) [2023-08-30 04:13:51,910 INFO L175 Difference]: Start difference. First operand has 32 places, 25 transitions, 80 flow. Second operand 3 states and 336 transitions. [2023-08-30 04:13:51,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 24 transitions, 118 flow [2023-08-30 04:13:51,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 24 transitions, 110 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 04:13:51,912 INFO L231 Difference]: Finished difference. Result has 29 places, 24 transitions, 76 flow [2023-08-30 04:13:51,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=29, PETRI_TRANSITIONS=24} [2023-08-30 04:13:51,913 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -9 predicate places. [2023-08-30 04:13:51,913 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 24 transitions, 76 flow [2023-08-30 04:13:51,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 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) [2023-08-30 04:13:51,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:13:51,914 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 04:13:51,928 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 [2023-08-30 04:13:52,124 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 [2023-08-30 04:13:52,125 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-08-30 04:13:52,125 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:13:52,125 INFO L85 PathProgramCache]: Analyzing trace with hash -2045474934, now seen corresponding path program 1 times [2023-08-30 04:13:52,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 04:13:52,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [881482109] [2023-08-30 04:13:52,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:13:52,126 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 [2023-08-30 04:13:52,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 04:13:52,127 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) [2023-08-30 04:13:52,128 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 [2023-08-30 04:13:52,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:13:52,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 04:13:52,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 04:13:52,246 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-08-30 04:13:52,246 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 1 case distinctions, treesize of input 9 treesize of output 15 [2023-08-30 04:13:52,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:13:52,273 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 04:13:52,273 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 04:13:52,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [881482109] [2023-08-30 04:13:52,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [881482109] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:13:52,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:13:52,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 04:13:52,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390816902] [2023-08-30 04:13:52,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:13:52,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 04:13:52,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 04:13:52,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 04:13:52,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 04:13:52,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 237 [2023-08-30 04:13:52,357 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 24 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 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) [2023-08-30 04:13:52,357 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:13:52,357 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 237 [2023-08-30 04:13:52,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:13:52,416 INFO L130 PetriNetUnfolder]: 55/146 cut-off events. [2023-08-30 04:13:52,416 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2023-08-30 04:13:52,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 328 conditions, 146 events. 55/146 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 517 event pairs, 51 based on Foata normal form. 0/138 useless extension candidates. Maximal degree in co-relation 323. Up to 135 conditions per place. [2023-08-30 04:13:52,417 INFO L137 encePairwiseOnDemand]: 234/237 looper letters, 18 selfloop transitions, 3 changer transitions 0/23 dead transitions. [2023-08-30 04:13:52,417 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 23 transitions, 116 flow [2023-08-30 04:13:52,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 04:13:52,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 04:13:52,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 325 transitions. [2023-08-30 04:13:52,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4571026722925457 [2023-08-30 04:13:52,419 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 325 transitions. [2023-08-30 04:13:52,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 325 transitions. [2023-08-30 04:13:52,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:13:52,419 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 325 transitions. [2023-08-30 04:13:52,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 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) [2023-08-30 04:13:52,422 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 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) [2023-08-30 04:13:52,422 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 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) [2023-08-30 04:13:52,422 INFO L175 Difference]: Start difference. First operand has 29 places, 24 transitions, 76 flow. Second operand 3 states and 325 transitions. [2023-08-30 04:13:52,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 23 transitions, 116 flow [2023-08-30 04:13:52,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 23 transitions, 110 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 04:13:52,423 INFO L231 Difference]: Finished difference. Result has 28 places, 23 transitions, 74 flow [2023-08-30 04:13:52,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=28, PETRI_TRANSITIONS=23} [2023-08-30 04:13:52,424 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -10 predicate places. [2023-08-30 04:13:52,424 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 23 transitions, 74 flow [2023-08-30 04:13:52,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 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) [2023-08-30 04:13:52,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:13:52,425 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 04:13:52,440 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 [2023-08-30 04:13:52,634 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 [2023-08-30 04:13:52,635 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-08-30 04:13:52,635 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:13:52,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1998514958, now seen corresponding path program 1 times [2023-08-30 04:13:52,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 04:13:52,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [740265719] [2023-08-30 04:13:52,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:13:52,636 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 [2023-08-30 04:13:52,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 04:13:52,637 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) [2023-08-30 04:13:52,640 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 [2023-08-30 04:13:52,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:13:52,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 04:13:52,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 04:13:52,736 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 [2023-08-30 04:13:52,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:13:52,741 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 04:13:52,742 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 04:13:52,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [740265719] [2023-08-30 04:13:52,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [740265719] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:13:52,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:13:52,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 04:13:52,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137701607] [2023-08-30 04:13:52,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:13:52,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 04:13:52,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 04:13:52,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 04:13:52,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 04:13:52,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 237 [2023-08-30 04:13:52,777 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 23 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 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) [2023-08-30 04:13:52,777 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:13:52,777 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 237 [2023-08-30 04:13:52,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:13:52,883 INFO L130 PetriNetUnfolder]: 39/127 cut-off events. [2023-08-30 04:13:52,883 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-30 04:13:52,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 286 conditions, 127 events. 39/127 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 462 event pairs, 11 based on Foata normal form. 6/126 useless extension candidates. Maximal degree in co-relation 281. Up to 78 conditions per place. [2023-08-30 04:13:52,884 INFO L137 encePairwiseOnDemand]: 230/237 looper letters, 27 selfloop transitions, 7 changer transitions 0/36 dead transitions. [2023-08-30 04:13:52,884 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 36 transitions, 178 flow [2023-08-30 04:13:52,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 04:13:52,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 04:13:52,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 341 transitions. [2023-08-30 04:13:52,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47960618846694797 [2023-08-30 04:13:52,885 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 341 transitions. [2023-08-30 04:13:52,885 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 341 transitions. [2023-08-30 04:13:52,885 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:13:52,885 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 341 transitions. [2023-08-30 04:13:52,886 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 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) [2023-08-30 04:13:52,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 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) [2023-08-30 04:13:52,887 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 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) [2023-08-30 04:13:52,887 INFO L175 Difference]: Start difference. First operand has 28 places, 23 transitions, 74 flow. Second operand 3 states and 341 transitions. [2023-08-30 04:13:52,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 36 transitions, 178 flow [2023-08-30 04:13:52,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 36 transitions, 172 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 04:13:52,889 INFO L231 Difference]: Finished difference. Result has 29 places, 28 transitions, 109 flow [2023-08-30 04:13:52,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=109, PETRI_PLACES=29, PETRI_TRANSITIONS=28} [2023-08-30 04:13:52,889 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -9 predicate places. [2023-08-30 04:13:52,890 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 28 transitions, 109 flow [2023-08-30 04:13:52,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 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) [2023-08-30 04:13:52,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:13:52,890 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 04:13:52,897 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-08-30 04:13:53,090 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 [2023-08-30 04:13:53,091 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-08-30 04:13:53,091 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:13:53,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1542224636, now seen corresponding path program 1 times [2023-08-30 04:13:53,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 04:13:53,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1457948688] [2023-08-30 04:13:53,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:13:53,092 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 [2023-08-30 04:13:53,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 04:13:53,093 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) [2023-08-30 04:13:53,094 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 [2023-08-30 04:13:53,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:13:53,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 04:13:53,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 04:13:53,231 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 [2023-08-30 04:13:53,268 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 16 treesize of output 18 [2023-08-30 04:13:53,293 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 16 treesize of output 18 [2023-08-30 04:13:53,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:13:53,305 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 04:13:53,305 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 04:13:53,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1457948688] [2023-08-30 04:13:53,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1457948688] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:13:53,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:13:53,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 04:13:53,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865590267] [2023-08-30 04:13:53,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:13:53,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 04:13:53,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 04:13:53,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 04:13:53,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 04:13:53,380 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 237 [2023-08-30 04:13:53,381 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 28 transitions, 109 flow. Second operand has 5 states, 5 states have (on average 103.8) internal successors, (519), 5 states have internal predecessors, (519), 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) [2023-08-30 04:13:53,381 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:13:53,381 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 237 [2023-08-30 04:13:53,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:13:53,447 INFO L130 PetriNetUnfolder]: 1/37 cut-off events. [2023-08-30 04:13:53,447 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2023-08-30 04:13:53,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 37 events. 1/37 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 40 event pairs, 0 based on Foata normal form. 5/41 useless extension candidates. Maximal degree in co-relation 101. Up to 23 conditions per place. [2023-08-30 04:13:53,447 INFO L137 encePairwiseOnDemand]: 232/237 looper letters, 15 selfloop transitions, 5 changer transitions 0/22 dead transitions. [2023-08-30 04:13:53,448 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 22 transitions, 122 flow [2023-08-30 04:13:53,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 04:13:53,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 04:13:53,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 428 transitions. [2023-08-30 04:13:53,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45147679324894513 [2023-08-30 04:13:53,449 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 428 transitions. [2023-08-30 04:13:53,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 428 transitions. [2023-08-30 04:13:53,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:13:53,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 428 transitions. [2023-08-30 04:13:53,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 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) [2023-08-30 04:13:53,453 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 237.0) internal successors, (1185), 5 states have internal predecessors, (1185), 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) [2023-08-30 04:13:53,453 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 237.0) internal successors, (1185), 5 states have internal predecessors, (1185), 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) [2023-08-30 04:13:53,453 INFO L175 Difference]: Start difference. First operand has 29 places, 28 transitions, 109 flow. Second operand 4 states and 428 transitions. [2023-08-30 04:13:53,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 22 transitions, 122 flow [2023-08-30 04:13:53,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 22 transitions, 106 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-08-30 04:13:53,454 INFO L231 Difference]: Finished difference. Result has 30 places, 22 transitions, 76 flow [2023-08-30 04:13:53,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=76, PETRI_PLACES=30, PETRI_TRANSITIONS=22} [2023-08-30 04:13:53,455 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -8 predicate places. [2023-08-30 04:13:53,455 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 22 transitions, 76 flow [2023-08-30 04:13:53,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 103.8) internal successors, (519), 5 states have internal predecessors, (519), 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) [2023-08-30 04:13:53,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:13:53,455 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 04:13:53,475 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 [2023-08-30 04:13:53,665 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 [2023-08-30 04:13:53,666 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-08-30 04:13:53,666 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:13:53,666 INFO L85 PathProgramCache]: Analyzing trace with hash 800518905, now seen corresponding path program 1 times [2023-08-30 04:13:53,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 04:13:53,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [555990778] [2023-08-30 04:13:53,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:13:53,667 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 [2023-08-30 04:13:53,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 04:13:53,668 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) [2023-08-30 04:13:53,669 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 [2023-08-30 04:13:53,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:13:53,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 33 conjunts are in the unsatisfiable core [2023-08-30 04:13:53,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 04:13:53,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 04:13:53,807 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 35 treesize of output 31 [2023-08-30 04:13:53,810 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-08-30 04:13:54,003 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 149 treesize of output 77 [2023-08-30 04:13:54,111 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 04:13:54,111 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 185 treesize of output 113 [2023-08-30 04:13:54,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:13:54,170 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 04:13:54,170 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 04:13:54,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [555990778] [2023-08-30 04:13:54,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [555990778] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:13:54,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:13:54,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 04:13:54,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526282863] [2023-08-30 04:13:54,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:13:54,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 04:13:54,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 04:13:54,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 04:13:54,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 04:13:54,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 237 [2023-08-30 04:13:54,549 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 22 transitions, 76 flow. Second operand has 6 states, 6 states have (on average 105.16666666666667) internal successors, (631), 6 states have internal predecessors, (631), 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) [2023-08-30 04:13:54,549 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:13:54,549 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 237 [2023-08-30 04:13:54,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:13:54,689 INFO L130 PetriNetUnfolder]: 1/36 cut-off events. [2023-08-30 04:13:54,689 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-30 04:13:54,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 36 events. 1/36 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 36 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 89. Up to 12 conditions per place. [2023-08-30 04:13:54,690 INFO L137 encePairwiseOnDemand]: 230/237 looper letters, 14 selfloop transitions, 7 changer transitions 0/24 dead transitions. [2023-08-30 04:13:54,690 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 24 transitions, 124 flow [2023-08-30 04:13:54,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 04:13:54,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 04:13:54,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 742 transitions. [2023-08-30 04:13:54,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4472573839662447 [2023-08-30 04:13:54,694 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 742 transitions. [2023-08-30 04:13:54,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 742 transitions. [2023-08-30 04:13:54,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:13:54,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 742 transitions. [2023-08-30 04:13:54,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 106.0) internal successors, (742), 7 states have internal predecessors, (742), 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) [2023-08-30 04:13:54,699 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 237.0) internal successors, (1896), 8 states have internal predecessors, (1896), 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) [2023-08-30 04:13:54,699 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 237.0) internal successors, (1896), 8 states have internal predecessors, (1896), 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) [2023-08-30 04:13:54,700 INFO L175 Difference]: Start difference. First operand has 30 places, 22 transitions, 76 flow. Second operand 7 states and 742 transitions. [2023-08-30 04:13:54,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 24 transitions, 124 flow [2023-08-30 04:13:54,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 24 transitions, 112 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 04:13:54,701 INFO L231 Difference]: Finished difference. Result has 32 places, 21 transitions, 77 flow [2023-08-30 04:13:54,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=77, PETRI_PLACES=32, PETRI_TRANSITIONS=21} [2023-08-30 04:13:54,702 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -6 predicate places. [2023-08-30 04:13:54,702 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 21 transitions, 77 flow [2023-08-30 04:13:54,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 105.16666666666667) internal successors, (631), 6 states have internal predecessors, (631), 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) [2023-08-30 04:13:54,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:13:54,702 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 04:13:54,715 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 [2023-08-30 04:13:54,912 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 [2023-08-30 04:13:54,913 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-08-30 04:13:54,913 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:13:54,913 INFO L85 PathProgramCache]: Analyzing trace with hash -186709951, now seen corresponding path program 1 times [2023-08-30 04:13:54,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 04:13:54,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2040903202] [2023-08-30 04:13:54,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:13:54,914 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 [2023-08-30 04:13:54,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 04:13:54,915 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) [2023-08-30 04:13:54,918 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 [2023-08-30 04:13:55,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:13:55,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 04:13:55,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 04:13:55,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:13:55,271 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 04:13:55,271 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 04:13:55,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2040903202] [2023-08-30 04:13:55,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2040903202] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 04:13:55,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 04:13:55,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 04:13:55,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577678442] [2023-08-30 04:13:55,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 04:13:55,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 04:13:55,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 04:13:55,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 04:13:55,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 04:13:55,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 237 [2023-08-30 04:13:55,450 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 21 transitions, 77 flow. Second operand has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 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) [2023-08-30 04:13:55,450 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:13:55,451 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 237 [2023-08-30 04:13:55,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:13:55,491 INFO L130 PetriNetUnfolder]: 0/34 cut-off events. [2023-08-30 04:13:55,491 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-30 04:13:55,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 34 events. 0/34 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 34 event pairs, 0 based on Foata normal form. 2/36 useless extension candidates. Maximal degree in co-relation 0. Up to 28 conditions per place. [2023-08-30 04:13:55,492 INFO L137 encePairwiseOnDemand]: 235/237 looper letters, 0 selfloop transitions, 0 changer transitions 19/19 dead transitions. [2023-08-30 04:13:55,492 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 19 transitions, 95 flow [2023-08-30 04:13:55,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 04:13:55,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 04:13:55,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 316 transitions. [2023-08-30 04:13:55,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2023-08-30 04:13:55,494 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 316 transitions. [2023-08-30 04:13:55,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 316 transitions. [2023-08-30 04:13:55,494 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:13:55,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 316 transitions. [2023-08-30 04:13:55,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 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) [2023-08-30 04:13:55,496 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 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) [2023-08-30 04:13:55,497 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 237.0) internal successors, (948), 4 states have internal predecessors, (948), 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) [2023-08-30 04:13:55,497 INFO L175 Difference]: Start difference. First operand has 32 places, 21 transitions, 77 flow. Second operand 3 states and 316 transitions. [2023-08-30 04:13:55,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 19 transitions, 95 flow [2023-08-30 04:13:55,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 19 transitions, 86 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-30 04:13:55,498 INFO L231 Difference]: Finished difference. Result has 27 places, 0 transitions, 0 flow [2023-08-30 04:13:55,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=237, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=27, PETRI_TRANSITIONS=0} [2023-08-30 04:13:55,498 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -11 predicate places. [2023-08-30 04:13:55,499 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 0 transitions, 0 flow [2023-08-30 04:13:55,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 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) [2023-08-30 04:13:55,501 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 25 remaining) [2023-08-30 04:13:55,501 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 25 remaining) [2023-08-30 04:13:55,502 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 25 remaining) [2023-08-30 04:13:55,502 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 25 remaining) [2023-08-30 04:13:55,502 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 25 remaining) [2023-08-30 04:13:55,502 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 25 remaining) [2023-08-30 04:13:55,502 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (18 of 25 remaining) [2023-08-30 04:13:55,502 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (17 of 25 remaining) [2023-08-30 04:13:55,503 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 25 remaining) [2023-08-30 04:13:55,503 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 25 remaining) [2023-08-30 04:13:55,503 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 25 remaining) [2023-08-30 04:13:55,503 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 25 remaining) [2023-08-30 04:13:55,503 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 25 remaining) [2023-08-30 04:13:55,503 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 25 remaining) [2023-08-30 04:13:55,504 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 25 remaining) [2023-08-30 04:13:55,504 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 25 remaining) [2023-08-30 04:13:55,504 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 25 remaining) [2023-08-30 04:13:55,504 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 25 remaining) [2023-08-30 04:13:55,504 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 25 remaining) [2023-08-30 04:13:55,504 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 25 remaining) [2023-08-30 04:13:55,505 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 25 remaining) [2023-08-30 04:13:55,505 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 25 remaining) [2023-08-30 04:13:55,505 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 25 remaining) [2023-08-30 04:13:55,505 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 25 remaining) [2023-08-30 04:13:55,505 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 25 remaining) [2023-08-30 04:13:55,516 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 [2023-08-30 04:13:55,716 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 [2023-08-30 04:13:55,716 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 04:13:55,720 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 04:13:55,720 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 04:13:55,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 04:13:55 BasicIcfg [2023-08-30 04:13:55,725 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 04:13:55,725 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 04:13:55,725 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 04:13:55,725 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 04:13:55,726 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:13:31" (3/4) ... [2023-08-30 04:13:55,727 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 04:13:55,731 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2023-08-30 04:13:55,735 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2023-08-30 04:13:55,737 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-08-30 04:13:55,737 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-30 04:13:55,737 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 04:13:55,764 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 04:13:55,764 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 04:13:55,765 INFO L158 Benchmark]: Toolchain (without parser) took 25531.81ms. Allocated memory was 73.4MB in the beginning and 90.2MB in the end (delta: 16.8MB). Free memory was 49.4MB in the beginning and 46.3MB in the end (delta: 3.1MB). Peak memory consumption was 20.2MB. Max. memory is 16.1GB. [2023-08-30 04:13:55,765 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 58.7MB. Free memory was 36.6MB in the beginning and 36.6MB in the end (delta: 58.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 04:13:55,765 INFO L158 Benchmark]: CACSL2BoogieTranslator took 537.46ms. Allocated memory is still 73.4MB. Free memory was 49.1MB in the beginning and 40.7MB in the end (delta: 8.4MB). Peak memory consumption was 14.8MB. Max. memory is 16.1GB. [2023-08-30 04:13:55,765 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.50ms. Allocated memory is still 73.4MB. Free memory was 40.4MB in the beginning and 38.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 04:13:55,766 INFO L158 Benchmark]: Boogie Preprocessor took 29.24ms. Allocated memory is still 73.4MB. Free memory was 38.3MB in the beginning and 36.7MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 04:13:55,766 INFO L158 Benchmark]: RCFGBuilder took 617.06ms. Allocated memory is still 73.4MB. Free memory was 36.5MB in the beginning and 41.0MB in the end (delta: -4.5MB). Peak memory consumption was 13.6MB. Max. memory is 16.1GB. [2023-08-30 04:13:55,766 INFO L158 Benchmark]: TraceAbstraction took 24256.95ms. Allocated memory was 73.4MB in the beginning and 90.2MB in the end (delta: 16.8MB). Free memory was 40.2MB in the beginning and 49.1MB in the end (delta: -8.9MB). Peak memory consumption was 8.5MB. Max. memory is 16.1GB. [2023-08-30 04:13:55,767 INFO L158 Benchmark]: Witness Printer took 39.09ms. Allocated memory is still 90.2MB. Free memory was 49.1MB in the beginning and 46.3MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 04:13:55,768 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 58.7MB. Free memory was 36.6MB in the beginning and 36.6MB in the end (delta: 58.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 537.46ms. Allocated memory is still 73.4MB. Free memory was 49.1MB in the beginning and 40.7MB in the end (delta: 8.4MB). Peak memory consumption was 14.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.50ms. Allocated memory is still 73.4MB. Free memory was 40.4MB in the beginning and 38.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.24ms. Allocated memory is still 73.4MB. Free memory was 38.3MB in the beginning and 36.7MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 617.06ms. Allocated memory is still 73.4MB. Free memory was 36.5MB in the beginning and 41.0MB in the end (delta: -4.5MB). Peak memory consumption was 13.6MB. Max. memory is 16.1GB. * TraceAbstraction took 24256.95ms. Allocated memory was 73.4MB in the beginning and 90.2MB in the end (delta: 16.8MB). Free memory was 40.2MB in the beginning and 49.1MB in the end (delta: -8.9MB). Peak memory consumption was 8.5MB. Max. memory is 16.1GB. * Witness Printer took 39.09ms. Allocated memory is still 90.2MB. Free memory was 49.1MB in the beginning and 46.3MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 15.8s, 113 PlacesBefore, 38 PlacesAfterwards, 118 TransitionsBefore, 42 TransitionsAfterwards, 2132 CoEnabledTransitionPairs, 6 FixpointIterations, 55 TrivialSequentialCompositions, 51 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 1 ChoiceCompositions, 114 TotalNumberOfCompositions, 4203 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2279, independent: 2146, independent conditional: 0, independent unconditional: 2146, dependent: 133, dependent conditional: 0, dependent unconditional: 133, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1225, independent: 1193, independent conditional: 0, independent unconditional: 1193, dependent: 32, dependent conditional: 0, dependent unconditional: 32, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2279, independent: 953, independent conditional: 0, independent unconditional: 953, dependent: 101, dependent conditional: 0, dependent unconditional: 101, unknown: 1225, unknown conditional: 0, unknown unconditional: 1225] , Statistics on independence cache: Total cache size (in pairs): 93, Positive cache size: 77, Positive conditional cache size: 0, Positive unconditional cache size: 77, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 691]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 706]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 152 locations, 25 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 24.1s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 15.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1182 SdHoareTripleChecker+Valid, 2.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 649 mSDsluCounter, 114 SdHoareTripleChecker+Invalid, 2.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 62 mSDsCounter, 88 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1358 IncrementalHoareTripleChecker+Invalid, 1446 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 88 mSolverCounterUnsat, 52 mSDtfsCounter, 1358 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 86 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=109occurred in iteration=9, InterpolantAutomatonStates: 45, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 92 NumberOfCodeBlocks, 92 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 80 ConstructedInterpolants, 18 QuantifiedInterpolants, 1471 SizeOfPredicates, 27 NumberOfNonLiveVariables, 1393 ConjunctsInSsa, 100 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 16 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 04:13:55,788 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE