./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 AFTER --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 AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 21:46:15,601 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 21:46:15,602 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 21:46:15,638 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 21:46:15,639 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 21:46:15,641 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 21:46:15,644 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 21:46:15,647 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 21:46:15,649 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 21:46:15,653 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 21:46:15,654 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 21:46:15,656 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 21:46:15,656 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 21:46:15,658 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 21:46:15,660 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 21:46:15,665 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 21:46:15,666 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 21:46:15,667 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 21:46:15,669 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 21:46:15,674 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 21:46:15,675 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 21:46:15,676 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 21:46:15,676 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 21:46:15,677 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 21:46:15,683 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 21:46:15,684 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 21:46:15,684 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 21:46:15,686 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 21:46:15,687 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 21:46:15,688 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 21:46:15,689 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 21:46:15,689 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 21:46:15,691 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 21:46:15,691 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 21:46:15,692 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 21:46:15,693 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 21:46:15,693 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 21:46:15,694 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 21:46:15,694 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 21:46:15,694 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 21:46:15,695 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 21:46:15,697 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-29 21:46:15,730 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 21:46:15,731 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 21:46:15,732 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 21:46:15,732 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 21:46:15,733 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 21:46:15,733 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 21:46:15,733 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 21:46:15,734 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 21:46:15,734 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 21:46:15,734 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 21:46:15,735 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 21:46:15,735 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 21:46:15,735 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 21:46:15,735 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 21:46:15,736 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 21:46:15,736 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-29 21:46:15,736 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-29 21:46:15,736 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-29 21:46:15,736 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 21:46:15,737 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-29 21:46:15,737 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 21:46:15,737 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 21:46:15,737 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 21:46:15,737 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 21:46:15,738 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 21:46:15,738 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 21:46:15,738 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 21:46:15,738 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 21:46:15,738 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 21:46:15,739 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 21:46:15,739 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 21:46:15,739 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 21:46:15,739 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 21:46:15,739 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 21:46:15,740 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4b7c7619d813e48364b259b1a428c27bb8d838fdbf884f11806f1a0c23ff1cb9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 21:46:16,033 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 21:46:16,058 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 21:46:16,060 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 21:46:16,061 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 21:46:16,061 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 21:46:16,063 INFO L432 ainManager$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 [2023-08-29 21:46:17,166 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 21:46:17,419 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 21:46:17,419 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_46-escape_racefree.i [2023-08-29 21:46:17,431 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0d2c2ea3/d13f09816fdb455ba6ba6ccfe9a1ede3/FLAGfaf66c4ec [2023-08-29 21:46:17,748 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0d2c2ea3/d13f09816fdb455ba6ba6ccfe9a1ede3 [2023-08-29 21:46:17,750 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 21:46:17,751 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 21:46:17,752 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 21:46:17,753 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 21:46:17,758 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 21:46:17,759 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 09:46:17" (1/1) ... [2023-08-29 21:46:17,760 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a7d3501 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:46:17, skipping insertion in model container [2023-08-29 21:46:17,761 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 09:46:17" (1/1) ... [2023-08-29 21:46:17,766 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 21:46:17,809 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 21:46:18,123 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] [2023-08-29 21:46:18,143 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 21:46:18,156 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) [2023-08-29 21:46:18,158 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@26366f4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:46:18, skipping insertion in model container [2023-08-29 21:46:18,158 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 21:46:18,159 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-08-29 21:46:18,160 INFO L158 Benchmark]: Toolchain (without parser) took 408.03ms. Allocated memory is still 79.7MB. Free memory was 54.9MB in the beginning and 42.3MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-08-29 21:46:18,161 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 60.8MB. Free memory was 38.1MB in the beginning and 38.1MB in the end (delta: 73.5kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 21:46:18,162 INFO L158 Benchmark]: CACSL2BoogieTranslator took 406.17ms. Allocated memory is still 79.7MB. Free memory was 54.9MB in the beginning and 42.5MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-08-29 21:46:18,163 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 60.8MB. Free memory was 38.1MB in the beginning and 38.1MB in the end (delta: 73.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 406.17ms. Allocated memory is still 79.7MB. Free memory was 54.9MB in the beginning and 42.5MB in the end (delta: 12.4MB). 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 AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 21:46:19,953 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 21:46:19,955 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 21:46:19,997 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 21:46:19,998 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 21:46:20,001 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 21:46:20,003 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 21:46:20,005 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 21:46:20,007 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 21:46:20,011 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 21:46:20,012 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 21:46:20,015 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 21:46:20,015 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 21:46:20,017 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 21:46:20,018 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 21:46:20,023 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 21:46:20,023 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 21:46:20,025 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 21:46:20,026 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 21:46:20,031 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 21:46:20,032 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 21:46:20,033 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 21:46:20,034 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 21:46:20,034 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 21:46:20,040 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 21:46:20,041 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 21:46:20,041 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 21:46:20,043 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 21:46:20,043 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 21:46:20,044 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 21:46:20,044 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 21:46:20,046 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 21:46:20,047 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 21:46:20,048 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 21:46:20,048 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 21:46:20,049 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 21:46:20,049 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 21:46:20,049 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 21:46:20,050 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 21:46:20,050 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 21:46:20,051 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 21:46:20,052 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-08-29 21:46:20,084 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 21:46:20,085 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 21:46:20,086 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 21:46:20,086 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 21:46:20,087 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 21:46:20,087 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 21:46:20,087 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 21:46:20,088 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 21:46:20,088 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 21:46:20,088 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 21:46:20,089 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 21:46:20,089 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 21:46:20,089 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 21:46:20,089 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 21:46:20,090 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 21:46:20,090 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-29 21:46:20,090 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-29 21:46:20,090 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-29 21:46:20,090 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 21:46:20,090 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-29 21:46:20,091 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-08-29 21:46:20,091 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-08-29 21:46:20,091 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 21:46:20,091 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 21:46:20,091 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 21:46:20,092 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 21:46:20,092 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 21:46:20,092 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 21:46:20,092 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 21:46:20,093 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 21:46:20,093 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-08-29 21:46:20,093 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-08-29 21:46:20,093 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 21:46:20,093 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 21:46:20,094 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 21:46:20,094 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-08-29 21:46:20,094 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 21:46:20,094 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4b7c7619d813e48364b259b1a428c27bb8d838fdbf884f11806f1a0c23ff1cb9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 21:46:20,401 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 21:46:20,429 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 21:46:20,432 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 21:46:20,433 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 21:46:20,433 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 21:46:20,434 INFO L432 ainManager$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 [2023-08-29 21:46:21,657 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 21:46:21,961 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 21:46:21,962 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_46-escape_racefree.i [2023-08-29 21:46:21,983 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05058b5a6/0b0e04dcbb5a4e19b5a4e1afa3342258/FLAG740685e8a [2023-08-29 21:46:21,996 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05058b5a6/0b0e04dcbb5a4e19b5a4e1afa3342258 [2023-08-29 21:46:21,999 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 21:46:22,000 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 21:46:22,001 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 21:46:22,001 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 21:46:22,006 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 21:46:22,007 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 09:46:21" (1/1) ... [2023-08-29 21:46:22,009 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cc87647 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:46:22, skipping insertion in model container [2023-08-29 21:46:22,009 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 09:46:21" (1/1) ... [2023-08-29 21:46:22,015 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 21:46:22,047 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 21:46:22,258 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] [2023-08-29 21:46:22,273 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 21:46:22,286 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-08-29 21:46:22,292 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 21:46:22,311 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] [2023-08-29 21:46:22,316 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 21:46:22,321 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 21:46:22,375 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] [2023-08-29 21:46:22,387 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 21:46:22,450 INFO L208 MainTranslator]: Completed translation [2023-08-29 21:46:22,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:46:22 WrapperNode [2023-08-29 21:46:22,451 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 21:46:22,452 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 21:46:22,452 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 21:46:22,452 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 21:46:22,458 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:46:22" (1/1) ... [2023-08-29 21:46:22,494 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:46:22" (1/1) ... [2023-08-29 21:46:22,518 INFO L138 Inliner]: procedures = 174, calls = 39, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 72 [2023-08-29 21:46:22,519 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 21:46:22,520 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 21:46:22,520 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 21:46:22,520 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 21:46:22,528 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:46:22" (1/1) ... [2023-08-29 21:46:22,529 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:46:22" (1/1) ... [2023-08-29 21:46:22,540 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:46:22" (1/1) ... [2023-08-29 21:46:22,540 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:46:22" (1/1) ... [2023-08-29 21:46:22,550 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:46:22" (1/1) ... [2023-08-29 21:46:22,559 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:46:22" (1/1) ... [2023-08-29 21:46:22,565 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:46:22" (1/1) ... [2023-08-29 21:46:22,571 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:46:22" (1/1) ... [2023-08-29 21:46:22,574 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 21:46:22,577 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 21:46:22,578 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 21:46:22,578 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 21:46:22,579 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:46:22" (1/1) ... [2023-08-29 21:46:22,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 21:46:22,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 21:46:22,606 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) [2023-08-29 21:46:22,632 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 [2023-08-29 21:46:22,645 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-08-29 21:46:22,645 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-29 21:46:22,646 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 21:46:22,646 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 21:46:22,646 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-29 21:46:22,646 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-29 21:46:22,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 21:46:22,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-08-29 21:46:22,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-08-29 21:46:22,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-08-29 21:46:22,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 21:46:22,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 21:46:22,649 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-29 21:46:22,840 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 21:46:22,843 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 21:46:23,218 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 21:46:23,225 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 21:46:23,225 INFO L302 CfgBuilder]: Removed 8 assume(true) statements. [2023-08-29 21:46:23,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 09:46:23 BoogieIcfgContainer [2023-08-29 21:46:23,227 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 21:46:23,229 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 21:46:23,229 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 21:46:23,231 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 21:46:23,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 09:46:21" (1/3) ... [2023-08-29 21:46:23,232 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f579271 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 09:46:23, skipping insertion in model container [2023-08-29 21:46:23,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:46:22" (2/3) ... [2023-08-29 21:46:23,233 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f579271 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 09:46:23, skipping insertion in model container [2023-08-29 21:46:23,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 09:46:23" (3/3) ... [2023-08-29 21:46:23,234 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_46-escape_racefree.i [2023-08-29 21:46:23,248 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 21:46:23,249 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-08-29 21:46:23,249 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 21:46:23,311 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-29 21:46:23,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 123 transitions, 254 flow [2023-08-29 21:46:23,423 INFO L130 PetriNetUnfolder]: 9/122 cut-off events. [2023-08-29 21:46:23,423 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 21:46:23,428 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. [2023-08-29 21:46:23,428 INFO L82 GeneralOperation]: Start removeDead. Operand has 118 places, 123 transitions, 254 flow [2023-08-29 21:46:23,432 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 113 places, 118 transitions, 242 flow [2023-08-29 21:46:23,435 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 21:46:23,443 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 113 places, 118 transitions, 242 flow [2023-08-29 21:46:23,446 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 113 places, 118 transitions, 242 flow [2023-08-29 21:46:23,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 113 places, 118 transitions, 242 flow [2023-08-29 21:46:23,471 INFO L130 PetriNetUnfolder]: 9/118 cut-off events. [2023-08-29 21:46:23,471 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 21:46:23,472 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. [2023-08-29 21:46:23,473 INFO L119 LiptonReduction]: Number of co-enabled transitions 2132 [2023-08-29 21:46:39,055 INFO L134 LiptonReduction]: Checked pairs total: 4203 [2023-08-29 21:46:39,055 INFO L136 LiptonReduction]: Total number of compositions: 114 [2023-08-29 21:46:39,075 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 21:46:39,084 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;@755ad6df, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 21:46:39,085 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2023-08-29 21:46:39,087 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-29 21:46:39,087 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 21:46:39,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:46:39,088 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 21:46:39,089 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)] === [2023-08-29 21:46:39,093 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:46:39,094 INFO L85 PathProgramCache]: Analyzing trace with hash 468, now seen corresponding path program 1 times [2023-08-29 21:46:39,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:46:39,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1519766681] [2023-08-29 21:46:39,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:46:39,112 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 [2023-08-29 21:46:39,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:46:39,117 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) [2023-08-29 21:46:39,127 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 [2023-08-29 21:46:39,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:46:39,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2023-08-29 21:46:39,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:46:39,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:46:39,191 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:46:39,191 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:46:39,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1519766681] [2023-08-29 21:46:39,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1519766681] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:46:39,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:46:39,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 21:46:39,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509083925] [2023-08-29 21:46:39,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:46:39,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 21:46:39,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:46:39,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 21:46:39,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 21:46:39,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 237 [2023-08-29 21:46:39,226 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) [2023-08-29 21:46:39,227 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:46:39,227 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 237 [2023-08-29 21:46:39,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:46:39,404 INFO L130 PetriNetUnfolder]: 84/213 cut-off events. [2023-08-29 21:46:39,416 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 21:46:39,417 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. [2023-08-29 21:46:39,419 INFO L137 encePairwiseOnDemand]: 223/237 looper letters, 23 selfloop transitions, 0 changer transitions 0/28 dead transitions. [2023-08-29 21:46:39,420 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 28 transitions, 108 flow [2023-08-29 21:46:39,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 21:46:39,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 21:46:39,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 259 transitions. [2023-08-29 21:46:39,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5464135021097046 [2023-08-29 21:46:39,452 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 259 transitions. [2023-08-29 21:46:39,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 259 transitions. [2023-08-29 21:46:39,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:46:39,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 259 transitions. [2023-08-29 21:46:39,458 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) [2023-08-29 21:46:39,463 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) [2023-08-29 21:46:39,475 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) [2023-08-29 21:46:39,477 INFO L175 Difference]: Start difference. First operand has 38 places, 42 transitions, 90 flow. Second operand 2 states and 259 transitions. [2023-08-29 21:46:39,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 28 transitions, 108 flow [2023-08-29 21:46:39,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 28 transitions, 104 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 21:46:39,481 INFO L231 Difference]: Finished difference. Result has 31 places, 28 transitions, 58 flow [2023-08-29 21:46:39,485 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} [2023-08-29 21:46:39,490 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -7 predicate places. [2023-08-29 21:46:39,505 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 28 transitions, 58 flow [2023-08-29 21:46:39,505 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) [2023-08-29 21:46:39,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:46:39,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-29 21:46:39,529 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-08-29 21:46:39,716 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 [2023-08-29 21:46:39,717 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)] === [2023-08-29 21:46:39,717 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:46:39,718 INFO L85 PathProgramCache]: Analyzing trace with hash 14205525, now seen corresponding path program 1 times [2023-08-29 21:46:39,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:46:39,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [476645747] [2023-08-29 21:46:39,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:46:39,719 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 [2023-08-29 21:46:39,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:46:39,721 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) [2023-08-29 21:46:39,723 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 [2023-08-29 21:46:39,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:46:39,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 21:46:39,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:46:39,871 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2023-08-29 21:46:39,873 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 [2023-08-29 21:46:39,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:46:39,891 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:46:39,892 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:46:39,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [476645747] [2023-08-29 21:46:39,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [476645747] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:46:39,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:46:39,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 21:46:39,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955763108] [2023-08-29 21:46:39,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:46:39,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:46:39,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:46:39,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:46:39,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:46:39,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 237 [2023-08-29 21:46:39,991 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) [2023-08-29 21:46:39,991 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:46:39,991 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 237 [2023-08-29 21:46:39,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:46:40,093 INFO L130 PetriNetUnfolder]: 72/188 cut-off events. [2023-08-29 21:46:40,094 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 21:46:40,094 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. [2023-08-29 21:46:40,095 INFO L137 encePairwiseOnDemand]: 234/237 looper letters, 20 selfloop transitions, 2 changer transitions 0/27 dead transitions. [2023-08-29 21:46:40,096 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 27 transitions, 100 flow [2023-08-29 21:46:40,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:46:40,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:46:40,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 335 transitions. [2023-08-29 21:46:40,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4711673699015471 [2023-08-29 21:46:40,099 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 335 transitions. [2023-08-29 21:46:40,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 335 transitions. [2023-08-29 21:46:40,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:46:40,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 335 transitions. [2023-08-29 21:46:40,102 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) [2023-08-29 21:46:40,104 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) [2023-08-29 21:46:40,105 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) [2023-08-29 21:46:40,105 INFO L175 Difference]: Start difference. First operand has 31 places, 28 transitions, 58 flow. Second operand 3 states and 335 transitions. [2023-08-29 21:46:40,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 27 transitions, 100 flow [2023-08-29 21:46:40,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 27 transitions, 100 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 21:46:40,106 INFO L231 Difference]: Finished difference. Result has 32 places, 27 transitions, 60 flow [2023-08-29 21:46:40,107 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} [2023-08-29 21:46:40,107 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -6 predicate places. [2023-08-29 21:46:40,108 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 27 transitions, 60 flow [2023-08-29 21:46:40,108 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) [2023-08-29 21:46:40,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:46:40,108 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-29 21:46:40,125 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 [2023-08-29 21:46:40,318 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 [2023-08-29 21:46:40,319 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)] === [2023-08-29 21:46:40,319 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:46:40,319 INFO L85 PathProgramCache]: Analyzing trace with hash 14205526, now seen corresponding path program 1 times [2023-08-29 21:46:40,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:46:40,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [345689673] [2023-08-29 21:46:40,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:46:40,320 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 [2023-08-29 21:46:40,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:46:40,322 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) [2023-08-29 21:46:40,325 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 [2023-08-29 21:46:40,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:46:40,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-29 21:46:40,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:46:40,423 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-29 21:46:40,423 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 [2023-08-29 21:46:40,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:46:40,447 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:46:40,447 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:46:40,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [345689673] [2023-08-29 21:46:40,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [345689673] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:46:40,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:46:40,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 21:46:40,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75485070] [2023-08-29 21:46:40,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:46:40,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:46:40,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:46:40,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:46:40,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:46:40,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 237 [2023-08-29 21:46:40,534 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) [2023-08-29 21:46:40,534 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:46:40,534 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 237 [2023-08-29 21:46:40,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:46:40,620 INFO L130 PetriNetUnfolder]: 60/163 cut-off events. [2023-08-29 21:46:40,620 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 21:46:40,621 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. [2023-08-29 21:46:40,622 INFO L137 encePairwiseOnDemand]: 234/237 looper letters, 19 selfloop transitions, 2 changer transitions 0/26 dead transitions. [2023-08-29 21:46:40,622 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 26 transitions, 100 flow [2023-08-29 21:46:40,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:46:40,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:46:40,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 343 transitions. [2023-08-29 21:46:40,624 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48241912798874825 [2023-08-29 21:46:40,624 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 343 transitions. [2023-08-29 21:46:40,625 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 343 transitions. [2023-08-29 21:46:40,625 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:46:40,625 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 343 transitions. [2023-08-29 21:46:40,626 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) [2023-08-29 21:46:40,628 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) [2023-08-29 21:46:40,629 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) [2023-08-29 21:46:40,629 INFO L175 Difference]: Start difference. First operand has 32 places, 27 transitions, 60 flow. Second operand 3 states and 343 transitions. [2023-08-29 21:46:40,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 26 transitions, 100 flow [2023-08-29 21:46:40,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 26 transitions, 96 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 21:46:40,630 INFO L231 Difference]: Finished difference. Result has 31 places, 26 transitions, 58 flow [2023-08-29 21:46:40,630 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} [2023-08-29 21:46:40,631 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -7 predicate places. [2023-08-29 21:46:40,631 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 26 transitions, 58 flow [2023-08-29 21:46:40,632 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) [2023-08-29 21:46:40,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:46:40,632 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-29 21:46:40,641 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 [2023-08-29 21:46:40,840 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 [2023-08-29 21:46:40,841 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)] === [2023-08-29 21:46:40,841 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:46:40,842 INFO L85 PathProgramCache]: Analyzing trace with hash 440370547, now seen corresponding path program 1 times [2023-08-29 21:46:40,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:46:40,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [283077780] [2023-08-29 21:46:40,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:46:40,842 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 [2023-08-29 21:46:40,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:46:40,844 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) [2023-08-29 21:46:40,846 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 [2023-08-29 21:46:40,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:46:40,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-29 21:46:40,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:46:40,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:46:40,973 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 [2023-08-29 21:46:40,979 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 [2023-08-29 21:46:41,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:46:41,075 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:46:41,076 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:46:41,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [283077780] [2023-08-29 21:46:41,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [283077780] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:46:41,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:46:41,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 21:46:41,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877167148] [2023-08-29 21:46:41,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:46:41,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:46:41,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:46:41,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:46:41,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:46:41,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 237 [2023-08-29 21:46:41,278 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) [2023-08-29 21:46:41,278 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:46:41,278 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 237 [2023-08-29 21:46:41,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:46:41,512 INFO L130 PetriNetUnfolder]: 62/209 cut-off events. [2023-08-29 21:46:41,513 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 21:46:41,513 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. [2023-08-29 21:46:41,514 INFO L137 encePairwiseOnDemand]: 231/237 looper letters, 29 selfloop transitions, 5 changer transitions 0/39 dead transitions. [2023-08-29 21:46:41,514 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 39 transitions, 155 flow [2023-08-29 21:46:41,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:46:41,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:46:41,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 347 transitions. [2023-08-29 21:46:41,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4880450070323488 [2023-08-29 21:46:41,517 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 347 transitions. [2023-08-29 21:46:41,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 347 transitions. [2023-08-29 21:46:41,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:46:41,517 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 347 transitions. [2023-08-29 21:46:41,518 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) [2023-08-29 21:46:41,519 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) [2023-08-29 21:46:41,520 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) [2023-08-29 21:46:41,520 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 58 flow. Second operand 3 states and 347 transitions. [2023-08-29 21:46:41,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 39 transitions, 155 flow [2023-08-29 21:46:41,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 39 transitions, 149 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 21:46:41,522 INFO L231 Difference]: Finished difference. Result has 33 places, 29 transitions, 88 flow [2023-08-29 21:46:41,522 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} [2023-08-29 21:46:41,522 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -5 predicate places. [2023-08-29 21:46:41,522 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 29 transitions, 88 flow [2023-08-29 21:46:41,523 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) [2023-08-29 21:46:41,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:46:41,523 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-29 21:46:41,539 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 [2023-08-29 21:46:41,733 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 [2023-08-29 21:46:41,733 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)] === [2023-08-29 21:46:41,734 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:46:41,734 INFO L85 PathProgramCache]: Analyzing trace with hash 440344243, now seen corresponding path program 1 times [2023-08-29 21:46:41,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:46:41,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [336319946] [2023-08-29 21:46:41,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:46:41,735 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:46:41,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:46:41,736 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) [2023-08-29 21:46:41,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-08-29 21:46:41,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:46:41,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-29 21:46:41,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:46:41,845 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2023-08-29 21:46:41,846 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 [2023-08-29 21:46:41,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:46:41,871 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:46:41,872 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:46:41,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [336319946] [2023-08-29 21:46:41,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [336319946] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:46:41,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:46:41,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 21:46:41,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962419470] [2023-08-29 21:46:41,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:46:41,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 21:46:41,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:46:41,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 21:46:41,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-29 21:46:42,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 237 [2023-08-29 21:46:42,022 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) [2023-08-29 21:46:42,022 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:46:42,022 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 237 [2023-08-29 21:46:42,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:46:42,151 INFO L130 PetriNetUnfolder]: 52/161 cut-off events. [2023-08-29 21:46:42,152 INFO L131 PetriNetUnfolder]: For 33/33 co-relation queries the response was YES. [2023-08-29 21:46:42,152 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. [2023-08-29 21:46:42,153 INFO L137 encePairwiseOnDemand]: 231/237 looper letters, 21 selfloop transitions, 5 changer transitions 0/31 dead transitions. [2023-08-29 21:46:42,153 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 31 transitions, 146 flow [2023-08-29 21:46:42,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 21:46:42,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 21:46:42,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 500 transitions. [2023-08-29 21:46:42,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4219409282700422 [2023-08-29 21:46:42,156 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 500 transitions. [2023-08-29 21:46:42,156 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 500 transitions. [2023-08-29 21:46:42,156 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:46:42,156 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 500 transitions. [2023-08-29 21:46:42,158 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) [2023-08-29 21:46:42,160 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) [2023-08-29 21:46:42,160 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) [2023-08-29 21:46:42,161 INFO L175 Difference]: Start difference. First operand has 33 places, 29 transitions, 88 flow. Second operand 5 states and 500 transitions. [2023-08-29 21:46:42,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 31 transitions, 146 flow [2023-08-29 21:46:42,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 31 transitions, 136 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 21:46:42,162 INFO L231 Difference]: Finished difference. Result has 33 places, 27 transitions, 84 flow [2023-08-29 21:46:42,163 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} [2023-08-29 21:46:42,163 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -5 predicate places. [2023-08-29 21:46:42,163 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 27 transitions, 84 flow [2023-08-29 21:46:42,164 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) [2023-08-29 21:46:42,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:46:42,164 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-29 21:46:42,179 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 [2023-08-29 21:46:42,379 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 [2023-08-29 21:46:42,379 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)] === [2023-08-29 21:46:42,380 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:46:42,380 INFO L85 PathProgramCache]: Analyzing trace with hash 440344244, now seen corresponding path program 1 times [2023-08-29 21:46:42,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:46:42,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [52246225] [2023-08-29 21:46:42,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:46:42,381 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 [2023-08-29 21:46:42,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:46:42,382 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) [2023-08-29 21:46:42,385 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 [2023-08-29 21:46:42,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:46:42,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-29 21:46:42,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:46:42,484 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-29 21:46:42,485 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 [2023-08-29 21:46:42,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:46:42,541 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:46:42,541 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:46:42,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [52246225] [2023-08-29 21:46:42,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [52246225] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:46:42,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:46:42,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 21:46:42,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482830385] [2023-08-29 21:46:42,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:46:42,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 21:46:42,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:46:42,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 21:46:42,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-29 21:46:42,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 237 [2023-08-29 21:46:42,722 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) [2023-08-29 21:46:42,722 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:46:42,722 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 237 [2023-08-29 21:46:42,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:46:42,867 INFO L130 PetriNetUnfolder]: 42/134 cut-off events. [2023-08-29 21:46:42,868 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2023-08-29 21:46:42,868 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. [2023-08-29 21:46:42,869 INFO L137 encePairwiseOnDemand]: 231/237 looper letters, 19 selfloop transitions, 5 changer transitions 0/29 dead transitions. [2023-08-29 21:46:42,869 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 29 transitions, 138 flow [2023-08-29 21:46:42,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 21:46:42,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 21:46:42,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 635 transitions. [2023-08-29 21:46:42,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44655414908579466 [2023-08-29 21:46:42,871 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 635 transitions. [2023-08-29 21:46:42,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 635 transitions. [2023-08-29 21:46:42,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:46:42,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 635 transitions. [2023-08-29 21:46:42,874 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) [2023-08-29 21:46:42,877 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) [2023-08-29 21:46:42,878 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) [2023-08-29 21:46:42,878 INFO L175 Difference]: Start difference. First operand has 33 places, 27 transitions, 84 flow. Second operand 6 states and 635 transitions. [2023-08-29 21:46:42,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 29 transitions, 138 flow [2023-08-29 21:46:42,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 29 transitions, 128 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-29 21:46:42,880 INFO L231 Difference]: Finished difference. Result has 32 places, 25 transitions, 80 flow [2023-08-29 21:46:42,880 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} [2023-08-29 21:46:42,883 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -6 predicate places. [2023-08-29 21:46:42,883 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 25 transitions, 80 flow [2023-08-29 21:46:42,885 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) [2023-08-29 21:46:42,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:46:42,886 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:46:42,901 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 [2023-08-29 21:46:43,095 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 [2023-08-29 21:46:43,095 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)] === [2023-08-29 21:46:43,096 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:46:43,096 INFO L85 PathProgramCache]: Analyzing trace with hash -2045474933, now seen corresponding path program 1 times [2023-08-29 21:46:43,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:46:43,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [881260609] [2023-08-29 21:46:43,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:46:43,096 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:46:43,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:46:43,098 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) [2023-08-29 21:46:43,101 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 [2023-08-29 21:46:43,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:46:43,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-29 21:46:43,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:46:43,214 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-08-29 21:46:43,214 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 [2023-08-29 21:46:43,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:46:43,280 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:46:43,280 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:46:43,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [881260609] [2023-08-29 21:46:43,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [881260609] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:46:43,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:46:43,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 21:46:43,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669029077] [2023-08-29 21:46:43,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:46:43,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:46:43,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:46:43,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:46:43,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:46:43,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 237 [2023-08-29 21:46:43,373 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) [2023-08-29 21:46:43,373 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:46:43,373 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 237 [2023-08-29 21:46:43,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:46:43,456 INFO L130 PetriNetUnfolder]: 42/132 cut-off events. [2023-08-29 21:46:43,456 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2023-08-29 21:46:43,457 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. [2023-08-29 21:46:43,457 INFO L137 encePairwiseOnDemand]: 234/237 looper letters, 17 selfloop transitions, 3 changer transitions 0/24 dead transitions. [2023-08-29 21:46:43,457 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 24 transitions, 118 flow [2023-08-29 21:46:43,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:46:43,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:46:43,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 336 transitions. [2023-08-29 21:46:43,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47257383966244726 [2023-08-29 21:46:43,459 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 336 transitions. [2023-08-29 21:46:43,459 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 336 transitions. [2023-08-29 21:46:43,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:46:43,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 336 transitions. [2023-08-29 21:46:43,460 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) [2023-08-29 21:46:43,461 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) [2023-08-29 21:46:43,462 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) [2023-08-29 21:46:43,462 INFO L175 Difference]: Start difference. First operand has 32 places, 25 transitions, 80 flow. Second operand 3 states and 336 transitions. [2023-08-29 21:46:43,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 24 transitions, 118 flow [2023-08-29 21:46:43,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 24 transitions, 110 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-29 21:46:43,465 INFO L231 Difference]: Finished difference. Result has 29 places, 24 transitions, 76 flow [2023-08-29 21:46:43,465 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} [2023-08-29 21:46:43,465 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -9 predicate places. [2023-08-29 21:46:43,465 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 24 transitions, 76 flow [2023-08-29 21:46:43,466 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) [2023-08-29 21:46:43,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:46:43,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:46:43,478 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 [2023-08-29 21:46:43,675 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 [2023-08-29 21:46:43,676 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)] === [2023-08-29 21:46:43,676 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:46:43,676 INFO L85 PathProgramCache]: Analyzing trace with hash -2045474934, now seen corresponding path program 1 times [2023-08-29 21:46:43,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:46:43,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1547078288] [2023-08-29 21:46:43,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:46:43,677 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 [2023-08-29 21:46:43,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:46:43,678 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) [2023-08-29 21:46:43,679 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 [2023-08-29 21:46:43,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:46:43,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-29 21:46:43,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:46:43,791 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-08-29 21:46:43,791 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 [2023-08-29 21:46:43,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:46:43,818 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:46:43,818 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:46:43,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1547078288] [2023-08-29 21:46:43,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1547078288] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:46:43,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:46:43,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 21:46:43,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19062047] [2023-08-29 21:46:43,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:46:43,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:46:43,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:46:43,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:46:43,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:46:43,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 237 [2023-08-29 21:46:43,901 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) [2023-08-29 21:46:43,901 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:46:43,901 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 237 [2023-08-29 21:46:43,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:46:43,969 INFO L130 PetriNetUnfolder]: 55/146 cut-off events. [2023-08-29 21:46:43,969 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2023-08-29 21:46:43,970 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. [2023-08-29 21:46:43,970 INFO L137 encePairwiseOnDemand]: 234/237 looper letters, 18 selfloop transitions, 3 changer transitions 0/23 dead transitions. [2023-08-29 21:46:43,970 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 23 transitions, 116 flow [2023-08-29 21:46:43,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:46:43,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:46:43,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 325 transitions. [2023-08-29 21:46:43,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4571026722925457 [2023-08-29 21:46:43,973 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 325 transitions. [2023-08-29 21:46:43,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 325 transitions. [2023-08-29 21:46:43,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:46:43,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 325 transitions. [2023-08-29 21:46:43,974 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) [2023-08-29 21:46:43,975 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) [2023-08-29 21:46:43,976 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) [2023-08-29 21:46:43,976 INFO L175 Difference]: Start difference. First operand has 29 places, 24 transitions, 76 flow. Second operand 3 states and 325 transitions. [2023-08-29 21:46:43,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 23 transitions, 116 flow [2023-08-29 21:46:43,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 23 transitions, 110 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 21:46:43,977 INFO L231 Difference]: Finished difference. Result has 28 places, 23 transitions, 74 flow [2023-08-29 21:46:43,978 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} [2023-08-29 21:46:43,980 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -10 predicate places. [2023-08-29 21:46:43,980 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 23 transitions, 74 flow [2023-08-29 21:46:43,980 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) [2023-08-29 21:46:43,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:46:43,981 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:46:43,991 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 [2023-08-29 21:46:44,190 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 [2023-08-29 21:46:44,190 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)] === [2023-08-29 21:46:44,191 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:46:44,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1998514958, now seen corresponding path program 1 times [2023-08-29 21:46:44,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:46:44,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1777755640] [2023-08-29 21:46:44,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:46:44,192 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 [2023-08-29 21:46:44,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:46:44,193 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) [2023-08-29 21:46:44,195 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 [2023-08-29 21:46:44,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:46:44,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-29 21:46:44,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:46:44,289 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 [2023-08-29 21:46:44,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:46:44,298 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:46:44,298 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:46:44,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1777755640] [2023-08-29 21:46:44,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1777755640] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:46:44,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:46:44,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 21:46:44,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302275193] [2023-08-29 21:46:44,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:46:44,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:46:44,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:46:44,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:46:44,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:46:44,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 237 [2023-08-29 21:46:44,335 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) [2023-08-29 21:46:44,335 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:46:44,336 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 237 [2023-08-29 21:46:44,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:46:44,438 INFO L130 PetriNetUnfolder]: 39/127 cut-off events. [2023-08-29 21:46:44,439 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-29 21:46:44,439 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. [2023-08-29 21:46:44,440 INFO L137 encePairwiseOnDemand]: 230/237 looper letters, 27 selfloop transitions, 7 changer transitions 0/36 dead transitions. [2023-08-29 21:46:44,440 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 36 transitions, 178 flow [2023-08-29 21:46:44,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:46:44,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:46:44,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 341 transitions. [2023-08-29 21:46:44,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47960618846694797 [2023-08-29 21:46:44,441 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 341 transitions. [2023-08-29 21:46:44,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 341 transitions. [2023-08-29 21:46:44,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:46:44,442 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 341 transitions. [2023-08-29 21:46:44,442 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) [2023-08-29 21:46:44,443 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) [2023-08-29 21:46:44,444 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) [2023-08-29 21:46:44,444 INFO L175 Difference]: Start difference. First operand has 28 places, 23 transitions, 74 flow. Second operand 3 states and 341 transitions. [2023-08-29 21:46:44,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 36 transitions, 178 flow [2023-08-29 21:46:44,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 36 transitions, 172 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 21:46:44,446 INFO L231 Difference]: Finished difference. Result has 29 places, 28 transitions, 109 flow [2023-08-29 21:46:44,446 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} [2023-08-29 21:46:44,447 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -9 predicate places. [2023-08-29 21:46:44,447 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 28 transitions, 109 flow [2023-08-29 21:46:44,447 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) [2023-08-29 21:46:44,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:46:44,447 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:46:44,459 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 [2023-08-29 21:46:44,648 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 [2023-08-29 21:46:44,648 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)] === [2023-08-29 21:46:44,648 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:46:44,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1542224636, now seen corresponding path program 1 times [2023-08-29 21:46:44,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:46:44,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1585402137] [2023-08-29 21:46:44,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:46:44,649 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 [2023-08-29 21:46:44,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:46:44,651 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) [2023-08-29 21:46:44,653 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 [2023-08-29 21:46:44,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:46:44,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-29 21:46:44,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:46:44,796 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 [2023-08-29 21:46:44,847 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 [2023-08-29 21:46:44,875 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 [2023-08-29 21:46:44,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:46:44,889 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:46:44,889 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:46:44,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1585402137] [2023-08-29 21:46:44,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1585402137] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:46:44,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:46:44,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 21:46:44,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208794851] [2023-08-29 21:46:44,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:46:44,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 21:46:44,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:46:44,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 21:46:44,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-29 21:46:44,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 237 [2023-08-29 21:46:44,974 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) [2023-08-29 21:46:44,974 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:46:44,974 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 237 [2023-08-29 21:46:44,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:46:45,044 INFO L130 PetriNetUnfolder]: 1/37 cut-off events. [2023-08-29 21:46:45,045 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2023-08-29 21:46:45,045 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. [2023-08-29 21:46:45,045 INFO L137 encePairwiseOnDemand]: 232/237 looper letters, 15 selfloop transitions, 5 changer transitions 0/22 dead transitions. [2023-08-29 21:46:45,045 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 22 transitions, 122 flow [2023-08-29 21:46:45,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 21:46:45,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 21:46:45,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 428 transitions. [2023-08-29 21:46:45,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45147679324894513 [2023-08-29 21:46:45,047 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 428 transitions. [2023-08-29 21:46:45,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 428 transitions. [2023-08-29 21:46:45,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:46:45,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 428 transitions. [2023-08-29 21:46:45,048 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) [2023-08-29 21:46:45,050 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) [2023-08-29 21:46:45,050 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) [2023-08-29 21:46:45,050 INFO L175 Difference]: Start difference. First operand has 29 places, 28 transitions, 109 flow. Second operand 4 states and 428 transitions. [2023-08-29 21:46:45,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 22 transitions, 122 flow [2023-08-29 21:46:45,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 22 transitions, 106 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-08-29 21:46:45,051 INFO L231 Difference]: Finished difference. Result has 30 places, 22 transitions, 76 flow [2023-08-29 21:46:45,051 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} [2023-08-29 21:46:45,052 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -8 predicate places. [2023-08-29 21:46:45,052 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 22 transitions, 76 flow [2023-08-29 21:46:45,054 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) [2023-08-29 21:46:45,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:46:45,054 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:46:45,066 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 [2023-08-29 21:46:45,263 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 [2023-08-29 21:46:45,263 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)] === [2023-08-29 21:46:45,264 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:46:45,264 INFO L85 PathProgramCache]: Analyzing trace with hash 800518905, now seen corresponding path program 1 times [2023-08-29 21:46:45,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:46:45,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1143710860] [2023-08-29 21:46:45,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:46:45,265 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 [2023-08-29 21:46:45,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:46:45,266 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) [2023-08-29 21:46:45,269 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 [2023-08-29 21:46:45,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:46:45,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 33 conjunts are in the unsatisfiable core [2023-08-29 21:46:45,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:46:45,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:46:45,428 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 [2023-08-29 21:46:45,431 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 [2023-08-29 21:46:45,615 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 [2023-08-29 21:46:45,734 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 21:46:45,734 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 [2023-08-29 21:46:45,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:46:45,804 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:46:45,804 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:46:45,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1143710860] [2023-08-29 21:46:45,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1143710860] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:46:45,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:46:45,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 21:46:45,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396892031] [2023-08-29 21:46:45,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:46:45,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 21:46:45,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:46:45,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 21:46:45,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-29 21:46:46,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 237 [2023-08-29 21:46:46,209 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) [2023-08-29 21:46:46,209 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:46:46,209 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 237 [2023-08-29 21:46:46,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:46:46,340 INFO L130 PetriNetUnfolder]: 1/36 cut-off events. [2023-08-29 21:46:46,341 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-29 21:46:46,341 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. [2023-08-29 21:46:46,341 INFO L137 encePairwiseOnDemand]: 230/237 looper letters, 14 selfloop transitions, 7 changer transitions 0/24 dead transitions. [2023-08-29 21:46:46,341 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 24 transitions, 124 flow [2023-08-29 21:46:46,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 21:46:46,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 21:46:46,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 742 transitions. [2023-08-29 21:46:46,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4472573839662447 [2023-08-29 21:46:46,344 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 742 transitions. [2023-08-29 21:46:46,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 742 transitions. [2023-08-29 21:46:46,344 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:46:46,344 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 742 transitions. [2023-08-29 21:46:46,345 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) [2023-08-29 21:46:46,348 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) [2023-08-29 21:46:46,348 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) [2023-08-29 21:46:46,348 INFO L175 Difference]: Start difference. First operand has 30 places, 22 transitions, 76 flow. Second operand 7 states and 742 transitions. [2023-08-29 21:46:46,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 24 transitions, 124 flow [2023-08-29 21:46:46,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 24 transitions, 112 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-29 21:46:46,349 INFO L231 Difference]: Finished difference. Result has 32 places, 21 transitions, 77 flow [2023-08-29 21:46:46,349 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} [2023-08-29 21:46:46,350 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -6 predicate places. [2023-08-29 21:46:46,350 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 21 transitions, 77 flow [2023-08-29 21:46:46,350 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) [2023-08-29 21:46:46,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:46:46,350 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:46:46,361 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 [2023-08-29 21:46:46,560 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 [2023-08-29 21:46:46,561 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)] === [2023-08-29 21:46:46,561 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:46:46,561 INFO L85 PathProgramCache]: Analyzing trace with hash -186709951, now seen corresponding path program 1 times [2023-08-29 21:46:46,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:46:46,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [592143695] [2023-08-29 21:46:46,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:46:46,562 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 [2023-08-29 21:46:46,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:46:46,563 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) [2023-08-29 21:46:46,563 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 [2023-08-29 21:46:46,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:46:46,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-29 21:46:46,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:46:46,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:46:46,943 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:46:46,944 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:46:46,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [592143695] [2023-08-29 21:46:46,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [592143695] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:46:46,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:46:46,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 21:46:46,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085247723] [2023-08-29 21:46:46,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:46:46,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:46:46,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:46:46,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:46:46,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:46:47,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 237 [2023-08-29 21:46:47,118 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) [2023-08-29 21:46:47,118 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:46:47,118 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 237 [2023-08-29 21:46:47,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:46:47,162 INFO L130 PetriNetUnfolder]: 0/34 cut-off events. [2023-08-29 21:46:47,162 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-29 21:46:47,162 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. [2023-08-29 21:46:47,162 INFO L137 encePairwiseOnDemand]: 235/237 looper letters, 0 selfloop transitions, 0 changer transitions 19/19 dead transitions. [2023-08-29 21:46:47,162 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 19 transitions, 95 flow [2023-08-29 21:46:47,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:46:47,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:46:47,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 316 transitions. [2023-08-29 21:46:47,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2023-08-29 21:46:47,164 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 316 transitions. [2023-08-29 21:46:47,164 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 316 transitions. [2023-08-29 21:46:47,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:46:47,164 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 316 transitions. [2023-08-29 21:46:47,165 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) [2023-08-29 21:46:47,166 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) [2023-08-29 21:46:47,166 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) [2023-08-29 21:46:47,166 INFO L175 Difference]: Start difference. First operand has 32 places, 21 transitions, 77 flow. Second operand 3 states and 316 transitions. [2023-08-29 21:46:47,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 19 transitions, 95 flow [2023-08-29 21:46:47,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 19 transitions, 86 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-29 21:46:47,167 INFO L231 Difference]: Finished difference. Result has 27 places, 0 transitions, 0 flow [2023-08-29 21:46:47,167 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} [2023-08-29 21:46:47,168 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -11 predicate places. [2023-08-29 21:46:47,168 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 0 transitions, 0 flow [2023-08-29 21:46:47,168 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) [2023-08-29 21:46:47,170 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 25 remaining) [2023-08-29 21:46:47,171 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 25 remaining) [2023-08-29 21:46:47,171 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 25 remaining) [2023-08-29 21:46:47,171 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 25 remaining) [2023-08-29 21:46:47,171 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 25 remaining) [2023-08-29 21:46:47,171 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 25 remaining) [2023-08-29 21:46:47,171 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (18 of 25 remaining) [2023-08-29 21:46:47,172 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (17 of 25 remaining) [2023-08-29 21:46:47,172 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 25 remaining) [2023-08-29 21:46:47,172 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 25 remaining) [2023-08-29 21:46:47,172 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 25 remaining) [2023-08-29 21:46:47,172 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 25 remaining) [2023-08-29 21:46:47,172 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 25 remaining) [2023-08-29 21:46:47,172 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 25 remaining) [2023-08-29 21:46:47,172 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 25 remaining) [2023-08-29 21:46:47,173 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 25 remaining) [2023-08-29 21:46:47,173 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 25 remaining) [2023-08-29 21:46:47,173 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 25 remaining) [2023-08-29 21:46:47,173 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 25 remaining) [2023-08-29 21:46:47,173 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 25 remaining) [2023-08-29 21:46:47,173 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 25 remaining) [2023-08-29 21:46:47,173 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 25 remaining) [2023-08-29 21:46:47,173 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 25 remaining) [2023-08-29 21:46:47,173 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 25 remaining) [2023-08-29 21:46:47,173 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 25 remaining) [2023-08-29 21:46:47,184 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 (13)] Ended with exit code 0 [2023-08-29 21:46:47,383 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 [2023-08-29 21:46:47,384 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:46:47,388 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-29 21:46:47,388 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-29 21:46:47,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 09:46:47 BasicIcfg [2023-08-29 21:46:47,391 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-29 21:46:47,391 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-29 21:46:47,391 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-29 21:46:47,392 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-29 21:46:47,392 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 09:46:23" (3/4) ... [2023-08-29 21:46:47,394 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-29 21:46:47,398 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2023-08-29 21:46:47,401 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2023-08-29 21:46:47,401 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-08-29 21:46:47,402 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-29 21:46:47,402 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-29 21:46:47,435 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-29 21:46:47,436 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-29 21:46:47,436 INFO L158 Benchmark]: Toolchain (without parser) took 25436.05ms. Allocated memory was 73.4MB in the beginning and 88.1MB in the end (delta: 14.7MB). Free memory was 49.6MB in the beginning and 27.3MB in the end (delta: 22.3MB). Peak memory consumption was 39.1MB. Max. memory is 16.1GB. [2023-08-29 21:46:47,436 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 60.8MB. Free memory was 38.4MB in the beginning and 38.4MB in the end (delta: 30.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 21:46:47,437 INFO L158 Benchmark]: CACSL2BoogieTranslator took 449.77ms. Allocated memory is still 73.4MB. Free memory was 49.4MB in the beginning and 45.2MB in the end (delta: 4.2MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-08-29 21:46:47,437 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.01ms. Allocated memory is still 73.4MB. Free memory was 45.2MB in the beginning and 42.9MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 21:46:47,437 INFO L158 Benchmark]: Boogie Preprocessor took 56.53ms. Allocated memory is still 73.4MB. Free memory was 42.9MB in the beginning and 41.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 21:46:47,438 INFO L158 Benchmark]: RCFGBuilder took 649.93ms. Allocated memory is still 73.4MB. Free memory was 41.1MB in the beginning and 43.0MB in the end (delta: -1.9MB). Peak memory consumption was 16.1MB. Max. memory is 16.1GB. [2023-08-29 21:46:47,438 INFO L158 Benchmark]: TraceAbstraction took 24162.31ms. Allocated memory was 73.4MB in the beginning and 88.1MB in the end (delta: 14.7MB). Free memory was 42.6MB in the beginning and 30.1MB in the end (delta: 12.5MB). Peak memory consumption was 27.1MB. Max. memory is 16.1GB. [2023-08-29 21:46:47,438 INFO L158 Benchmark]: Witness Printer took 44.25ms. Allocated memory is still 88.1MB. Free memory was 30.1MB in the beginning and 27.3MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 21:46:47,440 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 60.8MB. Free memory was 38.4MB in the beginning and 38.4MB in the end (delta: 30.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 449.77ms. Allocated memory is still 73.4MB. Free memory was 49.4MB in the beginning and 45.2MB in the end (delta: 4.2MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 67.01ms. Allocated memory is still 73.4MB. Free memory was 45.2MB in the beginning and 42.9MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 56.53ms. Allocated memory is still 73.4MB. Free memory was 42.9MB in the beginning and 41.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 649.93ms. Allocated memory is still 73.4MB. Free memory was 41.1MB in the beginning and 43.0MB in the end (delta: -1.9MB). Peak memory consumption was 16.1MB. Max. memory is 16.1GB. * TraceAbstraction took 24162.31ms. Allocated memory was 73.4MB in the beginning and 88.1MB in the end (delta: 14.7MB). Free memory was 42.6MB in the beginning and 30.1MB in the end (delta: 12.5MB). Peak memory consumption was 27.1MB. Max. memory is 16.1GB. * Witness Printer took 44.25ms. Allocated memory is still 88.1MB. Free memory was 30.1MB in the beginning and 27.3MB in the end (delta: 2.8MB). 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: 15.6s, 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: 24.0s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 15.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1182 SdHoareTripleChecker+Valid, 2.5s 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! [2023-08-29 21:46:47,462 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