./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/weaver/unroll-3.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/weaver/unroll-3.wvr.c -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 199b95a7803e428766b942c5c5c486b02a8ea32baf687cdef6ce754bef283884 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 07:42:29,857 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 07:42:29,860 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 07:42:29,902 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 07:42:29,905 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 07:42:29,908 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 07:42:29,909 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 07:42:29,912 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 07:42:29,914 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 07:42:29,918 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 07:42:29,919 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 07:42:29,921 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 07:42:29,921 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 07:42:29,923 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 07:42:29,924 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 07:42:29,928 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 07:42:29,929 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 07:42:29,930 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 07:42:29,932 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 07:42:29,936 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 07:42:29,946 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 07:42:29,947 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 07:42:29,948 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 07:42:29,949 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 07:42:29,955 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 07:42:29,956 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 07:42:29,956 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 07:42:29,958 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 07:42:29,958 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 07:42:29,960 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 07:42:29,960 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 07:42:29,965 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 07:42:29,967 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 07:42:29,968 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 07:42:29,968 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 07:42:29,969 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 07:42:29,969 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 07:42:29,969 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 07:42:29,970 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 07:42:29,970 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 07:42:29,971 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 07:42:29,973 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-30 07:42:30,005 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 07:42:30,005 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 07:42:30,006 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 07:42:30,007 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 07:42:30,008 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 07:42:30,008 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 07:42:30,008 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 07:42:30,009 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 07:42:30,009 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 07:42:30,009 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 07:42:30,010 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 07:42:30,010 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 07:42:30,010 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 07:42:30,010 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 07:42:30,011 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 07:42:30,011 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 07:42:30,011 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 07:42:30,011 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 07:42:30,011 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 07:42:30,011 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 07:42:30,012 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 07:42:30,012 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 07:42:30,012 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 07:42:30,012 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 07:42:30,012 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 07:42:30,013 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 07:42:30,013 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 07:42:30,013 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 07:42:30,013 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 07:42:30,013 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 07:42:30,014 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 07:42:30,014 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 07:42:30,014 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 07:42:30,014 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 07:42:30,015 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 199b95a7803e428766b942c5c5c486b02a8ea32baf687cdef6ce754bef283884 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 07:42:30,283 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 07:42:30,303 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 07:42:30,305 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 07:42:30,306 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 07:42:30,309 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 07:42:30,310 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/unroll-3.wvr.c [2023-08-30 07:42:31,493 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 07:42:31,704 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 07:42:31,705 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-3.wvr.c [2023-08-30 07:42:31,710 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d88a17d8/f2188a596e0c409b9ab3f48fc245954a/FLAGac7882e47 [2023-08-30 07:42:31,723 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d88a17d8/f2188a596e0c409b9ab3f48fc245954a [2023-08-30 07:42:31,726 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 07:42:31,727 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 07:42:31,730 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 07:42:31,730 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 07:42:31,733 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 07:42:31,734 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 07:42:31" (1/1) ... [2023-08-30 07:42:31,735 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72a39496 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:42:31, skipping insertion in model container [2023-08-30 07:42:31,735 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 07:42:31" (1/1) ... [2023-08-30 07:42:31,740 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 07:42:31,763 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 07:42:31,971 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-3.wvr.c[2500,2513] [2023-08-30 07:42:31,988 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 07:42:31,999 ERROR L324 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-08-30 07:42:32,001 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@57b81649 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:42:32, skipping insertion in model container [2023-08-30 07:42:32,002 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 07:42:32,002 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-08-30 07:42:32,004 INFO L158 Benchmark]: Toolchain (without parser) took 275.89ms. Allocated memory is still 71.3MB. Free memory was 46.6MB in the beginning and 36.8MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-08-30 07:42:32,005 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 56.6MB. Free memory was 34.6MB in the beginning and 34.5MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 07:42:32,006 INFO L158 Benchmark]: CACSL2BoogieTranslator took 272.45ms. Allocated memory is still 71.3MB. Free memory was 46.4MB in the beginning and 36.8MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-08-30 07:42:32,007 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 56.6MB. Free memory was 34.6MB in the beginning and 34.5MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 272.45ms. Allocated memory is still 71.3MB. Free memory was 46.4MB in the beginning and 36.8MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 100]: 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/weaver/unroll-3.wvr.c -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 199b95a7803e428766b942c5c5c486b02a8ea32baf687cdef6ce754bef283884 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 07:42:33,735 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 07:42:33,738 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 07:42:33,781 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 07:42:33,781 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 07:42:33,783 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 07:42:33,784 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 07:42:33,786 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 07:42:33,787 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 07:42:33,788 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 07:42:33,789 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 07:42:33,793 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 07:42:33,795 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 07:42:33,798 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 07:42:33,799 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 07:42:33,801 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 07:42:33,802 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 07:42:33,806 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 07:42:33,808 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 07:42:33,809 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 07:42:33,810 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 07:42:33,812 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 07:42:33,815 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 07:42:33,816 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 07:42:33,819 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 07:42:33,826 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 07:42:33,826 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 07:42:33,827 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 07:42:33,829 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 07:42:33,830 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 07:42:33,830 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 07:42:33,831 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 07:42:33,832 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 07:42:33,833 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 07:42:33,834 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 07:42:33,835 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 07:42:33,836 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 07:42:33,836 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 07:42:33,836 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 07:42:33,837 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 07:42:33,837 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 07:42:33,838 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-08-30 07:42:33,873 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 07:42:33,874 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 07:42:33,875 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 07:42:33,875 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 07:42:33,876 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 07:42:33,876 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 07:42:33,876 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 07:42:33,877 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 07:42:33,877 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 07:42:33,877 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 07:42:33,878 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 07:42:33,878 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 07:42:33,878 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 07:42:33,878 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 07:42:33,879 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 07:42:33,879 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 07:42:33,879 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 07:42:33,879 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 07:42:33,879 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 07:42:33,880 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 07:42:33,880 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-08-30 07:42:33,880 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-08-30 07:42:33,880 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 07:42:33,880 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 07:42:33,881 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 07:42:33,881 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 07:42:33,881 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 07:42:33,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 07:42:33,881 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 07:42:33,882 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 07:42:33,882 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-08-30 07:42:33,882 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-08-30 07:42:33,882 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 07:42:33,883 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 07:42:33,883 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 07:42:33,883 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-08-30 07:42:33,883 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 07:42:33,883 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 199b95a7803e428766b942c5c5c486b02a8ea32baf687cdef6ce754bef283884 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 07:42:34,179 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 07:42:34,205 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 07:42:34,208 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 07:42:34,209 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 07:42:34,209 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 07:42:34,210 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/unroll-3.wvr.c [2023-08-30 07:42:35,498 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 07:42:35,721 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 07:42:35,721 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-3.wvr.c [2023-08-30 07:42:35,733 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef62b2d77/86f50235acb14b14a7e01d054bcef4fc/FLAG2597fc3eb [2023-08-30 07:42:35,753 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef62b2d77/86f50235acb14b14a7e01d054bcef4fc [2023-08-30 07:42:35,754 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 07:42:35,756 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 07:42:35,757 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 07:42:35,757 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 07:42:35,763 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 07:42:35,763 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 07:42:35" (1/1) ... [2023-08-30 07:42:35,764 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25bdd03d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:42:35, skipping insertion in model container [2023-08-30 07:42:35,764 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 07:42:35" (1/1) ... [2023-08-30 07:42:35,769 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 07:42:35,784 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 07:42:35,960 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-3.wvr.c[2500,2513] [2023-08-30 07:42:35,980 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 07:42:36,002 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-08-30 07:42:36,012 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 07:42:36,039 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-3.wvr.c[2500,2513] [2023-08-30 07:42:36,046 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 07:42:36,054 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 07:42:36,089 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-3.wvr.c[2500,2513] [2023-08-30 07:42:36,095 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 07:42:36,115 INFO L208 MainTranslator]: Completed translation [2023-08-30 07:42:36,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:42:36 WrapperNode [2023-08-30 07:42:36,115 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 07:42:36,117 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 07:42:36,117 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 07:42:36,117 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 07:42:36,124 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:42:36" (1/1) ... [2023-08-30 07:42:36,144 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:42:36" (1/1) ... [2023-08-30 07:42:36,174 INFO L138 Inliner]: procedures = 26, calls = 34, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 145 [2023-08-30 07:42:36,175 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 07:42:36,176 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 07:42:36,176 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 07:42:36,176 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 07:42:36,184 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:42:36" (1/1) ... [2023-08-30 07:42:36,185 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:42:36" (1/1) ... [2023-08-30 07:42:36,200 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:42:36" (1/1) ... [2023-08-30 07:42:36,201 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:42:36" (1/1) ... [2023-08-30 07:42:36,212 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:42:36" (1/1) ... [2023-08-30 07:42:36,223 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:42:36" (1/1) ... [2023-08-30 07:42:36,226 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:42:36" (1/1) ... [2023-08-30 07:42:36,231 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:42:36" (1/1) ... [2023-08-30 07:42:36,234 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 07:42:36,235 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 07:42:36,236 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 07:42:36,236 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 07:42:36,237 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:42:36" (1/1) ... [2023-08-30 07:42:36,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 07:42:36,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 07:42:36,270 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 07:42:36,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 07:42:36,379 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 07:42:36,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-08-30 07:42:36,380 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 07:42:36,380 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-08-30 07:42:36,380 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 07:42:36,380 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 07:42:36,380 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 07:42:36,380 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 07:42:36,380 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 07:42:36,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 07:42:36,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 07:42:36,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 07:42:36,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-08-30 07:42:36,383 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 07:42:36,468 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 07:42:36,470 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 07:42:36,992 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 07:42:37,000 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 07:42:37,000 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-30 07:42:37,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 07:42:37 BoogieIcfgContainer [2023-08-30 07:42:37,003 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 07:42:37,004 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 07:42:37,004 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 07:42:37,007 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 07:42:37,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 07:42:35" (1/3) ... [2023-08-30 07:42:37,008 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26523766 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 07:42:37, skipping insertion in model container [2023-08-30 07:42:37,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:42:36" (2/3) ... [2023-08-30 07:42:37,008 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26523766 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 07:42:37, skipping insertion in model container [2023-08-30 07:42:37,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 07:42:37" (3/3) ... [2023-08-30 07:42:37,009 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-3.wvr.c [2023-08-30 07:42:37,025 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 07:42:37,026 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2023-08-30 07:42:37,026 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 07:42:37,135 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 07:42:37,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 182 places, 190 transitions, 396 flow [2023-08-30 07:42:37,228 INFO L130 PetriNetUnfolder]: 15/188 cut-off events. [2023-08-30 07:42:37,229 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 07:42:37,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 197 conditions, 188 events. 15/188 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 262 event pairs, 0 based on Foata normal form. 0/153 useless extension candidates. Maximal degree in co-relation 107. Up to 2 conditions per place. [2023-08-30 07:42:37,237 INFO L82 GeneralOperation]: Start removeDead. Operand has 182 places, 190 transitions, 396 flow [2023-08-30 07:42:37,242 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 176 places, 184 transitions, 380 flow [2023-08-30 07:42:37,245 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 07:42:37,260 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 176 places, 184 transitions, 380 flow [2023-08-30 07:42:37,263 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 176 places, 184 transitions, 380 flow [2023-08-30 07:42:37,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 176 places, 184 transitions, 380 flow [2023-08-30 07:42:37,349 INFO L130 PetriNetUnfolder]: 15/184 cut-off events. [2023-08-30 07:42:37,350 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 07:42:37,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193 conditions, 184 events. 15/184 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 244 event pairs, 0 based on Foata normal form. 0/150 useless extension candidates. Maximal degree in co-relation 107. Up to 2 conditions per place. [2023-08-30 07:42:37,357 INFO L119 LiptonReduction]: Number of co-enabled transitions 3708 [2023-08-30 07:42:54,477 INFO L134 LiptonReduction]: Checked pairs total: 3611 [2023-08-30 07:42:54,478 INFO L136 LiptonReduction]: Total number of compositions: 206 [2023-08-30 07:42:54,490 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 07:42:54,496 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;@4dd3bd4c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 07:42:54,496 INFO L358 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2023-08-30 07:42:54,498 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 07:42:54,498 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 07:42:54,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:42:54,499 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 07:42:54,500 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2023-08-30 07:42:54,504 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:42:54,504 INFO L85 PathProgramCache]: Analyzing trace with hash 23967, now seen corresponding path program 1 times [2023-08-30 07:42:54,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 07:42:54,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [27702707] [2023-08-30 07:42:54,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:42:54,515 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 07:42:54,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 07:42:54,520 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 07:42:54,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-08-30 07:42:54,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:42:54,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 07:42:54,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:42:54,716 INFO L321 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2023-08-30 07:42:54,717 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 2 case distinctions, treesize of input 12 treesize of output 33 [2023-08-30 07:42:54,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:42:54,740 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 07:42:54,740 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 07:42:54,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [27702707] [2023-08-30 07:42:54,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [27702707] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:42:54,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:42:54,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 07:42:54,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702410984] [2023-08-30 07:42:54,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:42:54,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 07:42:54,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 07:42:54,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 07:42:54,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 07:42:54,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 396 [2023-08-30 07:42:54,911 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 36 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:42:54,912 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:42:54,912 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 396 [2023-08-30 07:42:54,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:42:55,286 INFO L130 PetriNetUnfolder]: 457/652 cut-off events. [2023-08-30 07:42:55,288 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2023-08-30 07:42:55,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1322 conditions, 652 events. 457/652 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 2728 event pairs, 216 based on Foata normal form. 0/153 useless extension candidates. Maximal degree in co-relation 1138. Up to 646 conditions per place. [2023-08-30 07:42:55,298 INFO L137 encePairwiseOnDemand]: 391/396 looper letters, 29 selfloop transitions, 1 changer transitions 0/32 dead transitions. [2023-08-30 07:42:55,299 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 32 transitions, 136 flow [2023-08-30 07:42:55,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 07:42:55,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 07:42:55,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 535 transitions. [2023-08-30 07:42:55,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4503367003367003 [2023-08-30 07:42:55,320 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 535 transitions. [2023-08-30 07:42:55,321 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 535 transitions. [2023-08-30 07:42:55,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:42:55,327 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 535 transitions. [2023-08-30 07:42:55,331 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 178.33333333333334) internal successors, (535), 3 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:42:55,337 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 396.0) internal successors, (1584), 4 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:42:55,339 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 396.0) internal successors, (1584), 4 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:42:55,341 INFO L175 Difference]: Start difference. First operand has 40 places, 36 transitions, 84 flow. Second operand 3 states and 535 transitions. [2023-08-30 07:42:55,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 32 transitions, 136 flow [2023-08-30 07:42:55,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 32 transitions, 128 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 07:42:55,351 INFO L231 Difference]: Finished difference. Result has 34 places, 32 transitions, 70 flow [2023-08-30 07:42:55,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=34, PETRI_TRANSITIONS=32} [2023-08-30 07:42:55,358 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -6 predicate places. [2023-08-30 07:42:55,358 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 32 transitions, 70 flow [2023-08-30 07:42:55,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:42:55,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:42:55,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 07:42:55,371 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-08-30 07:42:55,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 07:42:55,569 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2023-08-30 07:42:55,569 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:42:55,570 INFO L85 PathProgramCache]: Analyzing trace with hash 24051, now seen corresponding path program 1 times [2023-08-30 07:42:55,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 07:42:55,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [795981705] [2023-08-30 07:42:55,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:42:55,571 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 07:42:55,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 07:42:55,572 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 07:42:55,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-08-30 07:42:55,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:42:55,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 07:42:55,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:42:55,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:42:55,652 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 07:42:55,653 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 07:42:55,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [795981705] [2023-08-30 07:42:55,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [795981705] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:42:55,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:42:55,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 07:42:55,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478723000] [2023-08-30 07:42:55,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:42:55,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 07:42:55,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 07:42:55,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 07:42:55,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 07:42:55,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 396 [2023-08-30 07:42:55,696 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 32 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 169.66666666666666) internal successors, (509), 3 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:42:55,696 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:42:55,697 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 396 [2023-08-30 07:42:55,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:42:56,001 INFO L130 PetriNetUnfolder]: 457/654 cut-off events. [2023-08-30 07:42:56,002 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 07:42:56,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1312 conditions, 654 events. 457/654 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 2755 event pairs, 216 based on Foata normal form. 0/154 useless extension candidates. Maximal degree in co-relation 1306. Up to 647 conditions per place. [2023-08-30 07:42:56,005 INFO L137 encePairwiseOnDemand]: 391/396 looper letters, 30 selfloop transitions, 2 changer transitions 0/34 dead transitions. [2023-08-30 07:42:56,006 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 34 transitions, 138 flow [2023-08-30 07:42:56,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 07:42:56,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 07:42:56,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 542 transitions. [2023-08-30 07:42:56,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4562289562289562 [2023-08-30 07:42:56,009 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 542 transitions. [2023-08-30 07:42:56,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 542 transitions. [2023-08-30 07:42:56,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:42:56,010 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 542 transitions. [2023-08-30 07:42:56,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 180.66666666666666) internal successors, (542), 3 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:42:56,014 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 396.0) internal successors, (1584), 4 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:42:56,015 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 396.0) internal successors, (1584), 4 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:42:56,015 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 70 flow. Second operand 3 states and 542 transitions. [2023-08-30 07:42:56,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 34 transitions, 138 flow [2023-08-30 07:42:56,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 34 transitions, 137 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 07:42:56,017 INFO L231 Difference]: Finished difference. Result has 36 places, 33 transitions, 85 flow [2023-08-30 07:42:56,017 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=85, PETRI_PLACES=36, PETRI_TRANSITIONS=33} [2023-08-30 07:42:56,018 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -4 predicate places. [2023-08-30 07:42:56,018 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 33 transitions, 85 flow [2023-08-30 07:42:56,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 169.66666666666666) internal successors, (509), 3 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:42:56,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:42:56,019 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 07:42:56,031 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 (3)] Ended with exit code 0 [2023-08-30 07:42:56,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 07:42:56,229 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2023-08-30 07:42:56,229 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:42:56,229 INFO L85 PathProgramCache]: Analyzing trace with hash 23966, now seen corresponding path program 1 times [2023-08-30 07:42:56,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 07:42:56,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [972126709] [2023-08-30 07:42:56,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:42:56,230 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 07:42:56,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 07:42:56,232 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 07:42:56,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-08-30 07:42:56,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:42:56,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 07:42:56,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:42:56,359 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2023-08-30 07:42:56,360 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 2 case distinctions, treesize of input 14 treesize of output 29 [2023-08-30 07:42:56,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:42:56,386 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 07:42:56,386 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 07:42:56,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [972126709] [2023-08-30 07:42:56,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [972126709] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:42:56,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:42:56,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 07:42:56,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816362939] [2023-08-30 07:42:56,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:42:56,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 07:42:56,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 07:42:56,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 07:42:56,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 07:42:56,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 396 [2023-08-30 07:42:56,534 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 33 transitions, 85 flow. Second operand has 3 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:42:56,534 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:42:56,534 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 396 [2023-08-30 07:42:56,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:42:56,821 INFO L130 PetriNetUnfolder]: 457/653 cut-off events. [2023-08-30 07:42:56,821 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 07:42:56,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1318 conditions, 653 events. 457/653 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 2718 event pairs, 216 based on Foata normal form. 1/156 useless extension candidates. Maximal degree in co-relation 1310. Up to 647 conditions per place. [2023-08-30 07:42:56,825 INFO L137 encePairwiseOnDemand]: 393/396 looper letters, 29 selfloop transitions, 2 changer transitions 0/33 dead transitions. [2023-08-30 07:42:56,825 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 33 transitions, 147 flow [2023-08-30 07:42:56,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 07:42:56,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 07:42:56,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 533 transitions. [2023-08-30 07:42:56,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44865319865319864 [2023-08-30 07:42:56,828 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 533 transitions. [2023-08-30 07:42:56,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 533 transitions. [2023-08-30 07:42:56,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:42:56,828 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 533 transitions. [2023-08-30 07:42:56,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 177.66666666666666) internal successors, (533), 3 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:42:56,831 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 396.0) internal successors, (1584), 4 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:42:56,832 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 396.0) internal successors, (1584), 4 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:42:56,832 INFO L175 Difference]: Start difference. First operand has 36 places, 33 transitions, 85 flow. Second operand 3 states and 533 transitions. [2023-08-30 07:42:56,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 33 transitions, 147 flow [2023-08-30 07:42:56,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 33 transitions, 143 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 07:42:56,834 INFO L231 Difference]: Finished difference. Result has 38 places, 33 transitions, 89 flow [2023-08-30 07:42:56,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=89, PETRI_PLACES=38, PETRI_TRANSITIONS=33} [2023-08-30 07:42:56,835 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, -2 predicate places. [2023-08-30 07:42:56,835 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 33 transitions, 89 flow [2023-08-30 07:42:56,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:42:56,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:42:56,836 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 07:42:56,852 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-08-30 07:42:57,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 07:42:57,046 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2023-08-30 07:42:57,046 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:42:57,047 INFO L85 PathProgramCache]: Analyzing trace with hash 745832, now seen corresponding path program 1 times [2023-08-30 07:42:57,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 07:42:57,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1149244060] [2023-08-30 07:42:57,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:42:57,048 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 07:42:57,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 07:42:57,055 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 07:42:57,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-08-30 07:42:57,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:42:57,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-30 07:42:57,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:42:57,183 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2023-08-30 07:42:57,183 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 2 case distinctions, treesize of input 14 treesize of output 29 [2023-08-30 07:42:57,241 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:42:57,241 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 07:42:57,425 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:42:57,425 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 07:42:57,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1149244060] [2023-08-30 07:42:57,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1149244060] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 07:42:57,425 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 07:42:57,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-08-30 07:42:57,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31162609] [2023-08-30 07:42:57,426 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 07:42:57,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 07:42:57,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 07:42:57,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 07:42:57,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-30 07:42:58,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 396 [2023-08-30 07:42:58,208 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 33 transitions, 89 flow. Second operand has 6 states, 6 states have (on average 163.0) internal successors, (978), 6 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:42:58,209 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:42:58,209 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 396 [2023-08-30 07:42:58,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:42:58,945 INFO L130 PetriNetUnfolder]: 919/1311 cut-off events. [2023-08-30 07:42:58,945 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 07:42:58,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2649 conditions, 1311 events. 919/1311 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 6221 event pairs, 432 based on Foata normal form. 3/327 useless extension candidates. Maximal degree in co-relation 2639. Up to 650 conditions per place. [2023-08-30 07:42:58,952 INFO L137 encePairwiseOnDemand]: 390/396 looper letters, 56 selfloop transitions, 11 changer transitions 0/69 dead transitions. [2023-08-30 07:42:58,952 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 69 transitions, 323 flow [2023-08-30 07:42:58,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 07:42:58,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 07:42:58,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1042 transitions. [2023-08-30 07:42:58,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4385521885521885 [2023-08-30 07:42:58,957 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1042 transitions. [2023-08-30 07:42:58,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1042 transitions. [2023-08-30 07:42:58,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:42:58,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1042 transitions. [2023-08-30 07:42:58,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 173.66666666666666) internal successors, (1042), 6 states have internal predecessors, (1042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:42:58,965 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 396.0) internal successors, (2772), 7 states have internal predecessors, (2772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:42:58,967 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 396.0) internal successors, (2772), 7 states have internal predecessors, (2772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:42:58,967 INFO L175 Difference]: Start difference. First operand has 38 places, 33 transitions, 89 flow. Second operand 6 states and 1042 transitions. [2023-08-30 07:42:58,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 69 transitions, 323 flow [2023-08-30 07:42:58,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 69 transitions, 319 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 07:42:58,970 INFO L231 Difference]: Finished difference. Result has 45 places, 42 transitions, 183 flow [2023-08-30 07:42:58,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=183, PETRI_PLACES=45, PETRI_TRANSITIONS=42} [2023-08-30 07:42:58,972 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 5 predicate places. [2023-08-30 07:42:58,972 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 42 transitions, 183 flow [2023-08-30 07:42:58,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 163.0) internal successors, (978), 6 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:42:58,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:42:58,973 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 07:42:58,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-08-30 07:42:59,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 07:42:59,183 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2023-08-30 07:42:59,183 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:42:59,183 INFO L85 PathProgramCache]: Analyzing trace with hash 745917, now seen corresponding path program 1 times [2023-08-30 07:42:59,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 07:42:59,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2138511067] [2023-08-30 07:42:59,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:42:59,184 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 07:42:59,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 07:42:59,186 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 07:42:59,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-08-30 07:42:59,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:42:59,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 07:42:59,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:42:59,283 INFO L321 Elim1Store]: treesize reduction 46, result has 29.2 percent of original size [2023-08-30 07:42:59,283 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 33 [2023-08-30 07:42:59,304 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 07:42:59,304 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 07:42:59,305 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 07:42:59,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2138511067] [2023-08-30 07:42:59,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2138511067] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:42:59,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:42:59,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 07:42:59,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303715913] [2023-08-30 07:42:59,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:42:59,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 07:42:59,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 07:42:59,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 07:42:59,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 07:42:59,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 396 [2023-08-30 07:42:59,397 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 42 transitions, 183 flow. Second operand has 3 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:42:59,397 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:42:59,397 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 396 [2023-08-30 07:42:59,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:42:59,719 INFO L130 PetriNetUnfolder]: 695/1015 cut-off events. [2023-08-30 07:42:59,720 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-08-30 07:42:59,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2083 conditions, 1015 events. 695/1015 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 4789 event pairs, 326 based on Foata normal form. 0/275 useless extension candidates. Maximal degree in co-relation 2069. Up to 1003 conditions per place. [2023-08-30 07:42:59,725 INFO L137 encePairwiseOnDemand]: 393/396 looper letters, 35 selfloop transitions, 1 changer transitions 0/38 dead transitions. [2023-08-30 07:42:59,725 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 38 transitions, 229 flow [2023-08-30 07:42:59,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 07:42:59,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 07:42:59,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 522 transitions. [2023-08-30 07:42:59,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4393939393939394 [2023-08-30 07:42:59,728 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 522 transitions. [2023-08-30 07:42:59,728 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 522 transitions. [2023-08-30 07:42:59,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:42:59,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 522 transitions. [2023-08-30 07:42:59,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:42:59,732 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 396.0) internal successors, (1584), 4 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:42:59,733 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 396.0) internal successors, (1584), 4 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:42:59,733 INFO L175 Difference]: Start difference. First operand has 45 places, 42 transitions, 183 flow. Second operand 3 states and 522 transitions. [2023-08-30 07:42:59,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 38 transitions, 229 flow [2023-08-30 07:42:59,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 38 transitions, 213 flow, removed 7 selfloop flow, removed 1 redundant places. [2023-08-30 07:42:59,737 INFO L231 Difference]: Finished difference. Result has 44 places, 38 transitions, 143 flow [2023-08-30 07:42:59,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=143, PETRI_PLACES=44, PETRI_TRANSITIONS=38} [2023-08-30 07:42:59,739 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 4 predicate places. [2023-08-30 07:42:59,740 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 38 transitions, 143 flow [2023-08-30 07:42:59,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:42:59,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:42:59,740 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 07:42:59,755 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-08-30 07:42:59,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 07:42:59,949 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2023-08-30 07:42:59,950 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:42:59,950 INFO L85 PathProgramCache]: Analyzing trace with hash 745918, now seen corresponding path program 1 times [2023-08-30 07:42:59,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 07:42:59,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1074462912] [2023-08-30 07:42:59,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:42:59,950 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 07:42:59,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 07:42:59,953 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 07:42:59,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-08-30 07:43:00,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:43:00,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-30 07:43:00,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:43:00,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 07:43:00,109 INFO L321 Elim1Store]: treesize reduction 24, result has 44.2 percent of original size [2023-08-30 07:43:00,109 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 26 [2023-08-30 07:43:00,119 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-08-30 07:43:00,216 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 07:43:00,216 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 07:43:00,216 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 07:43:00,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1074462912] [2023-08-30 07:43:00,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1074462912] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:43:00,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:43:00,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 07:43:00,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816261370] [2023-08-30 07:43:00,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:43:00,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 07:43:00,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 07:43:00,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 07:43:00,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 07:43:00,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 396 [2023-08-30 07:43:00,376 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 38 transitions, 143 flow. Second operand has 3 states, 3 states have (on average 168.0) internal successors, (504), 3 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:43:00,376 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:43:00,376 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 396 [2023-08-30 07:43:00,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:43:00,600 INFO L130 PetriNetUnfolder]: 471/719 cut-off events. [2023-08-30 07:43:00,601 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2023-08-30 07:43:00,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1475 conditions, 719 events. 471/719 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 3349 event pairs, 220 based on Foata normal form. 0/237 useless extension candidates. Maximal degree in co-relation 1460. Up to 707 conditions per place. [2023-08-30 07:43:00,605 INFO L137 encePairwiseOnDemand]: 393/396 looper letters, 31 selfloop transitions, 1 changer transitions 0/34 dead transitions. [2023-08-30 07:43:00,605 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 34 transitions, 185 flow [2023-08-30 07:43:00,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 07:43:00,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 07:43:00,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 529 transitions. [2023-08-30 07:43:00,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4452861952861953 [2023-08-30 07:43:00,608 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 529 transitions. [2023-08-30 07:43:00,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 529 transitions. [2023-08-30 07:43:00,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:43:00,608 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 529 transitions. [2023-08-30 07:43:00,609 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 176.33333333333334) internal successors, (529), 3 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:43:00,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 396.0) internal successors, (1584), 4 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:43:00,612 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 396.0) internal successors, (1584), 4 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:43:00,612 INFO L175 Difference]: Start difference. First operand has 44 places, 38 transitions, 143 flow. Second operand 3 states and 529 transitions. [2023-08-30 07:43:00,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 34 transitions, 185 flow [2023-08-30 07:43:00,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 34 transitions, 184 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 07:43:00,614 INFO L231 Difference]: Finished difference. Result has 43 places, 34 transitions, 122 flow [2023-08-30 07:43:00,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=43, PETRI_TRANSITIONS=34} [2023-08-30 07:43:00,615 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 3 predicate places. [2023-08-30 07:43:00,615 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 34 transitions, 122 flow [2023-08-30 07:43:00,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 168.0) internal successors, (504), 3 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:43:00,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:43:00,615 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 07:43:00,625 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-08-30 07:43:00,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 07:43:00,825 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2023-08-30 07:43:00,825 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:43:00,825 INFO L85 PathProgramCache]: Analyzing trace with hash 716841913, now seen corresponding path program 1 times [2023-08-30 07:43:00,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 07:43:00,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [875100174] [2023-08-30 07:43:00,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:43:00,826 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 07:43:00,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 07:43:00,827 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 07:43:00,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-08-30 07:43:00,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:43:00,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 07:43:00,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:43:00,923 INFO L321 Elim1Store]: treesize reduction 50, result has 23.1 percent of original size [2023-08-30 07:43:00,923 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 2 case distinctions, treesize of input 12 treesize of output 22 [2023-08-30 07:43:00,941 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 07:43:00,942 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 07:43:00,942 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 07:43:00,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [875100174] [2023-08-30 07:43:00,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [875100174] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:43:00,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:43:00,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 07:43:00,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116058395] [2023-08-30 07:43:00,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:43:00,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 07:43:00,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 07:43:00,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 07:43:00,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 07:43:01,039 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 396 [2023-08-30 07:43:01,040 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 34 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 165.66666666666666) internal successors, (497), 3 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:43:01,040 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:43:01,040 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 396 [2023-08-30 07:43:01,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:43:01,243 INFO L130 PetriNetUnfolder]: 433/657 cut-off events. [2023-08-30 07:43:01,243 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2023-08-30 07:43:01,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1352 conditions, 657 events. 433/657 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 3005 event pairs, 202 based on Foata normal form. 0/229 useless extension candidates. Maximal degree in co-relation 1336. Up to 645 conditions per place. [2023-08-30 07:43:01,246 INFO L137 encePairwiseOnDemand]: 393/396 looper letters, 29 selfloop transitions, 1 changer transitions 0/32 dead transitions. [2023-08-30 07:43:01,246 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 32 transitions, 178 flow [2023-08-30 07:43:01,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 07:43:01,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 07:43:01,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 518 transitions. [2023-08-30 07:43:01,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43602693602693604 [2023-08-30 07:43:01,248 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 518 transitions. [2023-08-30 07:43:01,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 518 transitions. [2023-08-30 07:43:01,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:43:01,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 518 transitions. [2023-08-30 07:43:01,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 172.66666666666666) internal successors, (518), 3 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:43:01,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 396.0) internal successors, (1584), 4 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:43:01,252 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 396.0) internal successors, (1584), 4 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:43:01,252 INFO L175 Difference]: Start difference. First operand has 43 places, 34 transitions, 122 flow. Second operand 3 states and 518 transitions. [2023-08-30 07:43:01,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 32 transitions, 178 flow [2023-08-30 07:43:01,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 32 transitions, 177 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 07:43:01,254 INFO L231 Difference]: Finished difference. Result has 42 places, 32 transitions, 119 flow [2023-08-30 07:43:01,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=119, PETRI_PLACES=42, PETRI_TRANSITIONS=32} [2023-08-30 07:43:01,255 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 2 predicate places. [2023-08-30 07:43:01,255 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 32 transitions, 119 flow [2023-08-30 07:43:01,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 165.66666666666666) internal successors, (497), 3 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:43:01,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:43:01,255 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 07:43:01,265 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-08-30 07:43:01,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 07:43:01,465 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2023-08-30 07:43:01,466 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:43:01,466 INFO L85 PathProgramCache]: Analyzing trace with hash 716841914, now seen corresponding path program 1 times [2023-08-30 07:43:01,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 07:43:01,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1444730243] [2023-08-30 07:43:01,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:43:01,466 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 07:43:01,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 07:43:01,467 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 07:43:01,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-08-30 07:43:01,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:43:01,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 07:43:01,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:43:01,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 07:43:01,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 07:43:01,578 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-30 07:43:01,578 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 20 [2023-08-30 07:43:01,584 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 14 treesize of output 12 [2023-08-30 07:43:01,607 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 07:43:01,608 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 07:43:01,608 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 07:43:01,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1444730243] [2023-08-30 07:43:01,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1444730243] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:43:01,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:43:01,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 07:43:01,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062008321] [2023-08-30 07:43:01,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:43:01,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 07:43:01,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 07:43:01,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 07:43:01,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 07:43:01,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 396 [2023-08-30 07:43:01,719 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 119 flow. Second operand has 3 states, 3 states have (on average 168.66666666666666) internal successors, (506), 3 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:43:01,719 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:43:01,719 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 396 [2023-08-30 07:43:01,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:43:01,911 INFO L130 PetriNetUnfolder]: 395/595 cut-off events. [2023-08-30 07:43:01,912 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2023-08-30 07:43:01,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1229 conditions, 595 events. 395/595 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 2621 event pairs, 184 based on Foata normal form. 0/221 useless extension candidates. Maximal degree in co-relation 1212. Up to 583 conditions per place. [2023-08-30 07:43:01,914 INFO L137 encePairwiseOnDemand]: 393/396 looper letters, 27 selfloop transitions, 1 changer transitions 0/30 dead transitions. [2023-08-30 07:43:01,915 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 30 transitions, 171 flow [2023-08-30 07:43:01,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 07:43:01,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 07:43:01,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 525 transitions. [2023-08-30 07:43:01,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44191919191919193 [2023-08-30 07:43:01,916 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 525 transitions. [2023-08-30 07:43:01,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 525 transitions. [2023-08-30 07:43:01,917 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:43:01,917 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 525 transitions. [2023-08-30 07:43:01,918 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:43:01,920 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 396.0) internal successors, (1584), 4 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:43:01,920 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 396.0) internal successors, (1584), 4 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:43:01,920 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 119 flow. Second operand 3 states and 525 transitions. [2023-08-30 07:43:01,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 30 transitions, 171 flow [2023-08-30 07:43:01,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 30 transitions, 170 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 07:43:01,924 INFO L231 Difference]: Finished difference. Result has 41 places, 30 transitions, 116 flow [2023-08-30 07:43:01,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=41, PETRI_TRANSITIONS=30} [2023-08-30 07:43:01,926 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 1 predicate places. [2023-08-30 07:43:01,926 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 30 transitions, 116 flow [2023-08-30 07:43:01,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 168.66666666666666) internal successors, (506), 3 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:43:01,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:43:01,927 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 07:43:01,940 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-08-30 07:43:02,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 07:43:02,137 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2023-08-30 07:43:02,137 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:43:02,137 INFO L85 PathProgramCache]: Analyzing trace with hash 747110430, now seen corresponding path program 2 times [2023-08-30 07:43:02,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 07:43:02,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1054263709] [2023-08-30 07:43:02,137 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 07:43:02,137 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 07:43:02,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 07:43:02,138 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 07:43:02,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-08-30 07:43:02,210 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 07:43:02,211 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 07:43:02,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-30 07:43:02,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:43:02,274 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2023-08-30 07:43:02,274 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 2 case distinctions, treesize of input 14 treesize of output 29 [2023-08-30 07:43:02,401 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:43:02,401 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 07:43:02,926 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:43:02,926 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 07:43:02,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1054263709] [2023-08-30 07:43:02,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1054263709] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 07:43:02,927 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 07:43:02,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2023-08-30 07:43:02,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655386356] [2023-08-30 07:43:02,927 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 07:43:02,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 07:43:02,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 07:43:02,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 07:43:02,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-08-30 07:43:05,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 396 [2023-08-30 07:43:05,968 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 30 transitions, 116 flow. Second operand has 12 states, 12 states have (on average 164.0) internal successors, (1968), 12 states have internal predecessors, (1968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:43:05,969 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:43:05,969 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 396 [2023-08-30 07:43:05,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:43:09,451 INFO L130 PetriNetUnfolder]: 1766/2651 cut-off events. [2023-08-30 07:43:09,451 INFO L131 PetriNetUnfolder]: For 57/57 co-relation queries the response was YES. [2023-08-30 07:43:09,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5360 conditions, 2651 events. 1766/2651 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 14337 event pairs, 828 based on Foata normal form. 6/1014 useless extension candidates. Maximal degree in co-relation 5342. Up to 289 conditions per place. [2023-08-30 07:43:09,466 INFO L137 encePairwiseOnDemand]: 392/396 looper letters, 173 selfloop transitions, 12 changer transitions 0/187 dead transitions. [2023-08-30 07:43:09,466 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 187 transitions, 874 flow [2023-08-30 07:43:09,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 07:43:09,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 07:43:09,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2147 transitions. [2023-08-30 07:43:09,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45180976430976433 [2023-08-30 07:43:09,473 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2147 transitions. [2023-08-30 07:43:09,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2147 transitions. [2023-08-30 07:43:09,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:43:09,475 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2147 transitions. [2023-08-30 07:43:09,478 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 178.91666666666666) internal successors, (2147), 12 states have internal predecessors, (2147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:43:09,486 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 396.0) internal successors, (5148), 13 states have internal predecessors, (5148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:43:09,488 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 396.0) internal successors, (5148), 13 states have internal predecessors, (5148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:43:09,488 INFO L175 Difference]: Start difference. First operand has 41 places, 30 transitions, 116 flow. Second operand 12 states and 2147 transitions. [2023-08-30 07:43:09,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 187 transitions, 874 flow [2023-08-30 07:43:09,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 187 transitions, 873 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 07:43:09,492 INFO L231 Difference]: Finished difference. Result has 58 places, 37 transitions, 201 flow [2023-08-30 07:43:09,492 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=201, PETRI_PLACES=58, PETRI_TRANSITIONS=37} [2023-08-30 07:43:09,494 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 18 predicate places. [2023-08-30 07:43:09,494 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 37 transitions, 201 flow [2023-08-30 07:43:09,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 164.0) internal successors, (1968), 12 states have internal predecessors, (1968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:43:09,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:43:09,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 07:43:09,506 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-08-30 07:43:09,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 07:43:09,697 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2023-08-30 07:43:09,697 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:43:09,697 INFO L85 PathProgramCache]: Analyzing trace with hash 747256410, now seen corresponding path program 1 times [2023-08-30 07:43:09,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 07:43:09,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1484204776] [2023-08-30 07:43:09,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:43:09,698 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 07:43:09,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 07:43:09,699 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 07:43:09,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-08-30 07:43:09,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:43:09,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 07:43:09,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:43:09,837 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:43:09,837 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 07:43:09,975 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 35 treesize of output 31 [2023-08-30 07:43:10,058 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:43:10,058 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 07:43:10,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1484204776] [2023-08-30 07:43:10,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1484204776] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 07:43:10,058 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 07:43:10,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2023-08-30 07:43:10,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050383996] [2023-08-30 07:43:10,059 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 07:43:10,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 07:43:10,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 07:43:10,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 07:43:10,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-30 07:43:11,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 396 [2023-08-30 07:43:11,323 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 37 transitions, 201 flow. Second operand has 8 states, 8 states have (on average 160.25) internal successors, (1282), 8 states have internal predecessors, (1282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:43:11,324 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:43:11,324 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 396 [2023-08-30 07:43:11,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:43:12,353 INFO L130 PetriNetUnfolder]: 2333/3659 cut-off events. [2023-08-30 07:43:12,353 INFO L131 PetriNetUnfolder]: For 60/60 co-relation queries the response was YES. [2023-08-30 07:43:12,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7451 conditions, 3659 events. 2333/3659 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 23221 event pairs, 522 based on Foata normal form. 0/1469 useless extension candidates. Maximal degree in co-relation 7425. Up to 2260 conditions per place. [2023-08-30 07:43:12,371 INFO L137 encePairwiseOnDemand]: 391/396 looper letters, 59 selfloop transitions, 10 changer transitions 0/71 dead transitions. [2023-08-30 07:43:12,371 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 71 transitions, 420 flow [2023-08-30 07:43:12,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 07:43:12,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 07:43:12,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1173 transitions. [2023-08-30 07:43:12,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4231601731601732 [2023-08-30 07:43:12,375 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1173 transitions. [2023-08-30 07:43:12,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1173 transitions. [2023-08-30 07:43:12,376 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:43:12,376 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1173 transitions. [2023-08-30 07:43:12,378 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 167.57142857142858) internal successors, (1173), 7 states have internal predecessors, (1173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:43:12,381 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 396.0) internal successors, (3168), 8 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:43:12,382 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 396.0) internal successors, (3168), 8 states have internal predecessors, (3168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:43:12,382 INFO L175 Difference]: Start difference. First operand has 58 places, 37 transitions, 201 flow. Second operand 7 states and 1173 transitions. [2023-08-30 07:43:12,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 71 transitions, 420 flow [2023-08-30 07:43:12,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 71 transitions, 407 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-08-30 07:43:12,385 INFO L231 Difference]: Finished difference. Result has 62 places, 40 transitions, 233 flow [2023-08-30 07:43:12,385 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=233, PETRI_PLACES=62, PETRI_TRANSITIONS=40} [2023-08-30 07:43:12,385 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 22 predicate places. [2023-08-30 07:43:12,385 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 40 transitions, 233 flow [2023-08-30 07:43:12,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 160.25) internal successors, (1282), 8 states have internal predecessors, (1282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:43:12,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:43:12,386 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 07:43:12,397 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-08-30 07:43:12,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 07:43:12,597 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2023-08-30 07:43:12,597 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:43:12,597 INFO L85 PathProgramCache]: Analyzing trace with hash 747256409, now seen corresponding path program 1 times [2023-08-30 07:43:12,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 07:43:12,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1242488622] [2023-08-30 07:43:12,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:43:12,598 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 07:43:12,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 07:43:12,599 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 07:43:12,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-08-30 07:43:12,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:43:12,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 07:43:12,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:43:12,694 INFO L321 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2023-08-30 07:43:12,694 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 2 case distinctions, treesize of input 12 treesize of output 33 [2023-08-30 07:43:12,715 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 07:43:12,715 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 07:43:12,715 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 07:43:12,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1242488622] [2023-08-30 07:43:12,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1242488622] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:43:12,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:43:12,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 07:43:12,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676865778] [2023-08-30 07:43:12,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:43:12,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 07:43:12,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 07:43:12,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 07:43:12,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 07:43:12,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 396 [2023-08-30 07:43:12,834 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 40 transitions, 233 flow. Second operand has 4 states, 4 states have (on average 158.25) internal successors, (633), 4 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:43:12,834 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:43:12,834 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 396 [2023-08-30 07:43:12,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:43:13,251 INFO L130 PetriNetUnfolder]: 1406/2318 cut-off events. [2023-08-30 07:43:13,251 INFO L131 PetriNetUnfolder]: For 659/659 co-relation queries the response was YES. [2023-08-30 07:43:13,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5330 conditions, 2318 events. 1406/2318 cut-off events. For 659/659 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 13811 event pairs, 801 based on Foata normal form. 0/1409 useless extension candidates. Maximal degree in co-relation 5301. Up to 2260 conditions per place. [2023-08-30 07:43:13,263 INFO L137 encePairwiseOnDemand]: 392/396 looper letters, 30 selfloop transitions, 6 changer transitions 0/38 dead transitions. [2023-08-30 07:43:13,263 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 38 transitions, 301 flow [2023-08-30 07:43:13,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 07:43:13,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 07:43:13,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 650 transitions. [2023-08-30 07:43:13,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41035353535353536 [2023-08-30 07:43:13,266 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 650 transitions. [2023-08-30 07:43:13,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 650 transitions. [2023-08-30 07:43:13,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:43:13,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 650 transitions. [2023-08-30 07:43:13,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 162.5) internal successors, (650), 4 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:43:13,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 396.0) internal successors, (1980), 5 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:43:13,271 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 396.0) internal successors, (1980), 5 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:43:13,271 INFO L175 Difference]: Start difference. First operand has 62 places, 40 transitions, 233 flow. Second operand 4 states and 650 transitions. [2023-08-30 07:43:13,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 38 transitions, 301 flow [2023-08-30 07:43:13,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 38 transitions, 287 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-08-30 07:43:13,274 INFO L231 Difference]: Finished difference. Result has 61 places, 38 transitions, 227 flow [2023-08-30 07:43:13,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=227, PETRI_PLACES=61, PETRI_TRANSITIONS=38} [2023-08-30 07:43:13,275 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 21 predicate places. [2023-08-30 07:43:13,275 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 38 transitions, 227 flow [2023-08-30 07:43:13,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 158.25) internal successors, (633), 4 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:43:13,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:43:13,276 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 07:43:13,283 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-08-30 07:43:13,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 07:43:13,481 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2023-08-30 07:43:13,481 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:43:13,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1690112978, now seen corresponding path program 1 times [2023-08-30 07:43:13,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 07:43:13,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [912911322] [2023-08-30 07:43:13,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:43:13,482 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 07:43:13,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 07:43:13,483 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 07:43:13,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-08-30 07:43:13,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:43:13,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 21 conjunts are in the unsatisfiable core [2023-08-30 07:43:13,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:43:13,643 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2023-08-30 07:43:13,643 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 2 case distinctions, treesize of input 14 treesize of output 29 [2023-08-30 07:43:13,790 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 07:43:13,790 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 07:43:14,298 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 07:43:14,298 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 07:43:14,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [912911322] [2023-08-30 07:43:14,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [912911322] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 07:43:14,298 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 07:43:14,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2023-08-30 07:43:14,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672814832] [2023-08-30 07:43:14,299 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 07:43:14,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 07:43:14,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 07:43:14,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 07:43:14,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-08-30 07:43:19,780 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 396 [2023-08-30 07:43:19,781 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 38 transitions, 227 flow. Second operand has 8 states, 8 states have (on average 159.5) internal successors, (1276), 8 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:43:19,781 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:43:19,781 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 396 [2023-08-30 07:43:19,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:43:22,534 INFO L130 PetriNetUnfolder]: 1109/1871 cut-off events. [2023-08-30 07:43:22,534 INFO L131 PetriNetUnfolder]: For 610/610 co-relation queries the response was YES. [2023-08-30 07:43:22,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4306 conditions, 1871 events. 1109/1871 cut-off events. For 610/610 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 10915 event pairs, 624 based on Foata normal form. 21/1252 useless extension candidates. Maximal degree in co-relation 4276. Up to 1507 conditions per place. [2023-08-30 07:43:22,543 INFO L137 encePairwiseOnDemand]: 388/396 looper letters, 50 selfloop transitions, 11 changer transitions 0/63 dead transitions. [2023-08-30 07:43:22,543 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 63 transitions, 414 flow [2023-08-30 07:43:22,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 07:43:22,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 07:43:22,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1481 transitions. [2023-08-30 07:43:22,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4155443322109989 [2023-08-30 07:43:22,548 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1481 transitions. [2023-08-30 07:43:22,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1481 transitions. [2023-08-30 07:43:22,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:43:22,549 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1481 transitions. [2023-08-30 07:43:22,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 164.55555555555554) internal successors, (1481), 9 states have internal predecessors, (1481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:43:22,555 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 396.0) internal successors, (3960), 10 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:43:22,556 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 396.0) internal successors, (3960), 10 states have internal predecessors, (3960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:43:22,556 INFO L175 Difference]: Start difference. First operand has 61 places, 38 transitions, 227 flow. Second operand 9 states and 1481 transitions. [2023-08-30 07:43:22,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 63 transitions, 414 flow [2023-08-30 07:43:22,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 63 transitions, 407 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 07:43:22,558 INFO L231 Difference]: Finished difference. Result has 69 places, 38 transitions, 261 flow [2023-08-30 07:43:22,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=261, PETRI_PLACES=69, PETRI_TRANSITIONS=38} [2023-08-30 07:43:22,559 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 29 predicate places. [2023-08-30 07:43:22,559 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 38 transitions, 261 flow [2023-08-30 07:43:22,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 159.5) internal successors, (1276), 8 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:43:22,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:43:22,560 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2023-08-30 07:43:22,567 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-08-30 07:43:22,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 07:43:22,760 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2023-08-30 07:43:22,761 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:43:22,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1346410616, now seen corresponding path program 2 times [2023-08-30 07:43:22,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 07:43:22,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [330591574] [2023-08-30 07:43:22,761 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 07:43:22,761 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 07:43:22,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 07:43:22,762 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 07:43:22,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-08-30 07:43:22,836 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 07:43:22,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 07:43:22,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-30 07:43:22,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:43:22,899 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2023-08-30 07:43:22,899 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 2 case distinctions, treesize of input 14 treesize of output 29 [2023-08-30 07:43:23,028 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-08-30 07:43:23,028 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 07:43:23,028 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 07:43:23,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [330591574] [2023-08-30 07:43:23,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [330591574] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:43:23,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:43:23,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 07:43:23,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745722537] [2023-08-30 07:43:23,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:43:23,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 07:43:23,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 07:43:23,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 07:43:23,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 07:43:23,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 396 [2023-08-30 07:43:23,182 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 38 transitions, 261 flow. Second operand has 4 states, 4 states have (on average 165.5) internal successors, (662), 4 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:43:23,182 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:43:23,182 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 396 [2023-08-30 07:43:23,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:43:23,440 INFO L130 PetriNetUnfolder]: 515/977 cut-off events. [2023-08-30 07:43:23,441 INFO L131 PetriNetUnfolder]: For 962/962 co-relation queries the response was YES. [2023-08-30 07:43:23,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2265 conditions, 977 events. 515/977 cut-off events. For 962/962 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 5382 event pairs, 270 based on Foata normal form. 138/899 useless extension candidates. Maximal degree in co-relation 2233. Up to 919 conditions per place. [2023-08-30 07:43:23,445 INFO L137 encePairwiseOnDemand]: 390/396 looper letters, 26 selfloop transitions, 6 changer transitions 0/34 dead transitions. [2023-08-30 07:43:23,445 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 34 transitions, 297 flow [2023-08-30 07:43:23,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 07:43:23,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 07:43:23,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 676 transitions. [2023-08-30 07:43:23,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42676767676767674 [2023-08-30 07:43:23,448 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 676 transitions. [2023-08-30 07:43:23,448 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 676 transitions. [2023-08-30 07:43:23,449 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:43:23,449 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 676 transitions. [2023-08-30 07:43:23,450 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 169.0) internal successors, (676), 4 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:43:23,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 396.0) internal successors, (1980), 5 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:43:23,453 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 396.0) internal successors, (1980), 5 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:43:23,453 INFO L175 Difference]: Start difference. First operand has 69 places, 38 transitions, 261 flow. Second operand 4 states and 676 transitions. [2023-08-30 07:43:23,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 34 transitions, 297 flow [2023-08-30 07:43:23,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 34 transitions, 240 flow, removed 9 selfloop flow, removed 14 redundant places. [2023-08-30 07:43:23,455 INFO L231 Difference]: Finished difference. Result has 54 places, 34 transitions, 188 flow [2023-08-30 07:43:23,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=188, PETRI_PLACES=54, PETRI_TRANSITIONS=34} [2023-08-30 07:43:23,456 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 14 predicate places. [2023-08-30 07:43:23,456 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 34 transitions, 188 flow [2023-08-30 07:43:23,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 165.5) internal successors, (662), 4 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:43:23,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:43:23,457 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1] [2023-08-30 07:43:23,471 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-08-30 07:43:23,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 07:43:23,666 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2023-08-30 07:43:23,666 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:43:23,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1167221794, now seen corresponding path program 3 times [2023-08-30 07:43:23,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 07:43:23,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1242842507] [2023-08-30 07:43:23,666 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 07:43:23,667 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 07:43:23,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 07:43:23,668 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 07:43:23,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-08-30 07:43:23,826 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-08-30 07:43:23,826 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 07:43:23,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-30 07:43:23,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:43:23,898 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2023-08-30 07:43:23,899 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 2 case distinctions, treesize of input 14 treesize of output 29 [2023-08-30 07:43:24,218 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:43:24,218 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 07:43:26,107 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:43:26,107 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 07:43:26,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1242842507] [2023-08-30 07:43:26,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1242842507] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 07:43:26,108 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 07:43:26,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2023-08-30 07:43:26,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184730811] [2023-08-30 07:43:26,108 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 07:43:26,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-30 07:43:26,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 07:43:26,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-30 07:43:26,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2023-08-30 07:43:37,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 396 [2023-08-30 07:43:37,791 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 34 transitions, 188 flow. Second operand has 24 states, 24 states have (on average 164.0) internal successors, (3936), 24 states have internal predecessors, (3936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:43:37,791 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:43:37,791 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 396 [2023-08-30 07:43:37,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:43:52,133 INFO L130 PetriNetUnfolder]: 1199/2273 cut-off events. [2023-08-30 07:43:52,133 INFO L131 PetriNetUnfolder]: For 747/747 co-relation queries the response was YES. [2023-08-30 07:43:52,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5021 conditions, 2273 events. 1199/2273 cut-off events. For 747/747 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 13351 event pairs, 630 based on Foata normal form. 12/1861 useless extension candidates. Maximal degree in co-relation 4998. Up to 504 conditions per place. [2023-08-30 07:43:52,141 INFO L137 encePairwiseOnDemand]: 392/396 looper letters, 296 selfloop transitions, 24 changer transitions 0/322 dead transitions. [2023-08-30 07:43:52,141 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 322 transitions, 1780 flow [2023-08-30 07:43:52,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-30 07:43:52,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-30 07:43:52,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4223 transitions. [2023-08-30 07:43:52,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44433922558922556 [2023-08-30 07:43:52,152 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4223 transitions. [2023-08-30 07:43:52,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4223 transitions. [2023-08-30 07:43:52,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:43:52,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4223 transitions. [2023-08-30 07:43:52,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 175.95833333333334) internal successors, (4223), 24 states have internal predecessors, (4223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:43:52,174 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 396.0) internal successors, (9900), 25 states have internal predecessors, (9900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:43:52,175 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 396.0) internal successors, (9900), 25 states have internal predecessors, (9900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:43:52,175 INFO L175 Difference]: Start difference. First operand has 54 places, 34 transitions, 188 flow. Second operand 24 states and 4223 transitions. [2023-08-30 07:43:52,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 322 transitions, 1780 flow [2023-08-30 07:43:52,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 322 transitions, 1756 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 07:43:52,182 INFO L231 Difference]: Finished difference. Result has 88 places, 47 transitions, 346 flow [2023-08-30 07:43:52,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=346, PETRI_PLACES=88, PETRI_TRANSITIONS=47} [2023-08-30 07:43:52,183 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 48 predicate places. [2023-08-30 07:43:52,183 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 47 transitions, 346 flow [2023-08-30 07:43:52,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 164.0) internal successors, (3936), 24 states have internal predecessors, (3936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:43:52,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:43:52,184 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 07:43:52,198 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-08-30 07:43:52,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 07:43:52,396 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2023-08-30 07:43:52,396 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:43:52,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1486666684, now seen corresponding path program 1 times [2023-08-30 07:43:52,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 07:43:52,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1935167026] [2023-08-30 07:43:52,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:43:52,397 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 07:43:52,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 07:43:52,398 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 07:43:52,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-08-30 07:43:52,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:43:52,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 07:43:52,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:43:52,539 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 07:43:52,539 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 07:43:52,539 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 07:43:52,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1935167026] [2023-08-30 07:43:52,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1935167026] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:43:52,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:43:52,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 07:43:52,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19136106] [2023-08-30 07:43:52,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:43:52,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 07:43:52,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 07:43:52,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 07:43:52,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 07:43:52,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 396 [2023-08-30 07:43:52,603 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 47 transitions, 346 flow. Second operand has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:43:52,603 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:43:52,603 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 396 [2023-08-30 07:43:52,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:43:52,966 INFO L130 PetriNetUnfolder]: 1493/2756 cut-off events. [2023-08-30 07:43:52,967 INFO L131 PetriNetUnfolder]: For 608/608 co-relation queries the response was YES. [2023-08-30 07:43:52,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6187 conditions, 2756 events. 1493/2756 cut-off events. For 608/608 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 16646 event pairs, 273 based on Foata normal form. 21/2231 useless extension candidates. Maximal degree in co-relation 6151. Up to 2101 conditions per place. [2023-08-30 07:43:52,976 INFO L137 encePairwiseOnDemand]: 392/396 looper letters, 51 selfloop transitions, 4 changer transitions 1/58 dead transitions. [2023-08-30 07:43:52,976 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 58 transitions, 487 flow [2023-08-30 07:43:52,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 07:43:52,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 07:43:52,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 534 transitions. [2023-08-30 07:43:52,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4494949494949495 [2023-08-30 07:43:52,979 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 534 transitions. [2023-08-30 07:43:52,979 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 534 transitions. [2023-08-30 07:43:52,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:43:52,979 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 534 transitions. [2023-08-30 07:43:52,980 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 178.0) internal successors, (534), 3 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:43:52,982 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 396.0) internal successors, (1584), 4 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:43:52,982 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 396.0) internal successors, (1584), 4 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:43:52,982 INFO L175 Difference]: Start difference. First operand has 88 places, 47 transitions, 346 flow. Second operand 3 states and 534 transitions. [2023-08-30 07:43:52,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 58 transitions, 487 flow [2023-08-30 07:43:52,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 58 transitions, 463 flow, removed 1 selfloop flow, removed 10 redundant places. [2023-08-30 07:43:52,987 INFO L231 Difference]: Finished difference. Result has 81 places, 50 transitions, 352 flow [2023-08-30 07:43:52,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=352, PETRI_PLACES=81, PETRI_TRANSITIONS=50} [2023-08-30 07:43:52,988 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 41 predicate places. [2023-08-30 07:43:52,988 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 50 transitions, 352 flow [2023-08-30 07:43:52,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:43:52,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:43:52,988 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 07:43:53,001 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 (16)] Ended with exit code 0 [2023-08-30 07:43:53,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 07:43:53,198 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2023-08-30 07:43:53,198 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:43:53,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1394674302, now seen corresponding path program 1 times [2023-08-30 07:43:53,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 07:43:53,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [144225550] [2023-08-30 07:43:53,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:43:53,199 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 07:43:53,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 07:43:53,200 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 07:43:53,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-08-30 07:43:53,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:43:53,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 07:43:53,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:43:53,331 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 07:43:53,331 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 07:43:53,331 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 07:43:53,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [144225550] [2023-08-30 07:43:53,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [144225550] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:43:53,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:43:53,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 07:43:53,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292589267] [2023-08-30 07:43:53,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:43:53,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 07:43:53,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 07:43:53,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 07:43:53,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 07:43:53,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 396 [2023-08-30 07:43:53,357 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 50 transitions, 352 flow. Second operand has 5 states, 5 states have (on average 169.0) internal successors, (845), 5 states have internal predecessors, (845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:43:53,357 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:43:53,357 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 396 [2023-08-30 07:43:53,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:43:53,859 INFO L130 PetriNetUnfolder]: 1463/2827 cut-off events. [2023-08-30 07:43:53,859 INFO L131 PetriNetUnfolder]: For 1193/1193 co-relation queries the response was YES. [2023-08-30 07:43:53,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7128 conditions, 2827 events. 1463/2827 cut-off events. For 1193/1193 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 17918 event pairs, 300 based on Foata normal form. 160/2867 useless extension candidates. Maximal degree in co-relation 7090. Up to 1582 conditions per place. [2023-08-30 07:43:53,873 INFO L137 encePairwiseOnDemand]: 391/396 looper letters, 50 selfloop transitions, 12 changer transitions 2/65 dead transitions. [2023-08-30 07:43:53,873 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 65 transitions, 521 flow [2023-08-30 07:43:53,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 07:43:53,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 07:43:53,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 863 transitions. [2023-08-30 07:43:53,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43585858585858583 [2023-08-30 07:43:53,876 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 863 transitions. [2023-08-30 07:43:53,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 863 transitions. [2023-08-30 07:43:53,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:43:53,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 863 transitions. [2023-08-30 07:43:53,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 172.6) internal successors, (863), 5 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:43:53,882 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 396.0) internal successors, (2376), 6 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:43:53,882 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 396.0) internal successors, (2376), 6 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:43:53,883 INFO L175 Difference]: Start difference. First operand has 81 places, 50 transitions, 352 flow. Second operand 5 states and 863 transitions. [2023-08-30 07:43:53,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 65 transitions, 521 flow [2023-08-30 07:43:53,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 65 transitions, 516 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 07:43:53,888 INFO L231 Difference]: Finished difference. Result has 86 places, 51 transitions, 387 flow [2023-08-30 07:43:53,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=387, PETRI_PLACES=86, PETRI_TRANSITIONS=51} [2023-08-30 07:43:53,889 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 46 predicate places. [2023-08-30 07:43:53,889 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 51 transitions, 387 flow [2023-08-30 07:43:53,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 169.0) internal successors, (845), 5 states have internal predecessors, (845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:43:53,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:43:53,890 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 07:43:53,903 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-08-30 07:43:54,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 07:43:54,100 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2023-08-30 07:43:54,101 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:43:54,101 INFO L85 PathProgramCache]: Analyzing trace with hash 121831332, now seen corresponding path program 2 times [2023-08-30 07:43:54,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 07:43:54,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [572597496] [2023-08-30 07:43:54,102 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 07:43:54,102 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 07:43:54,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 07:43:54,103 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 07:43:54,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-08-30 07:43:54,191 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 07:43:54,191 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 07:43:54,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 07:43:54,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:43:54,279 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 07:43:54,279 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 07:43:54,371 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 07:43:54,371 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 07:43:54,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [572597496] [2023-08-30 07:43:54,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [572597496] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 07:43:54,371 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 07:43:54,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2023-08-30 07:43:54,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075526163] [2023-08-30 07:43:54,371 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 07:43:54,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-30 07:43:54,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 07:43:54,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-30 07:43:54,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2023-08-30 07:43:54,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 396 [2023-08-30 07:43:54,488 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 51 transitions, 387 flow. Second operand has 11 states, 11 states have (on average 163.36363636363637) internal successors, (1797), 11 states have internal predecessors, (1797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:43:54,488 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:43:54,488 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 396 [2023-08-30 07:43:54,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:43:55,682 INFO L130 PetriNetUnfolder]: 2383/4627 cut-off events. [2023-08-30 07:43:55,682 INFO L131 PetriNetUnfolder]: For 4717/4717 co-relation queries the response was YES. [2023-08-30 07:43:55,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13952 conditions, 4627 events. 2383/4627 cut-off events. For 4717/4717 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 29831 event pairs, 520 based on Foata normal form. 320/4947 useless extension candidates. Maximal degree in co-relation 13912. Up to 1382 conditions per place. [2023-08-30 07:43:55,767 INFO L137 encePairwiseOnDemand]: 389/396 looper letters, 66 selfloop transitions, 29 changer transitions 4/99 dead transitions. [2023-08-30 07:43:55,767 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 99 transitions, 786 flow [2023-08-30 07:43:55,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 07:43:55,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 07:43:55,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1677 transitions. [2023-08-30 07:43:55,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42348484848484846 [2023-08-30 07:43:55,775 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1677 transitions. [2023-08-30 07:43:55,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1677 transitions. [2023-08-30 07:43:55,777 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:43:55,777 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1677 transitions. [2023-08-30 07:43:55,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 167.7) internal successors, (1677), 10 states have internal predecessors, (1677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:43:55,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 396.0) internal successors, (4356), 11 states have internal predecessors, (4356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:43:55,786 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 396.0) internal successors, (4356), 11 states have internal predecessors, (4356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:43:55,786 INFO L175 Difference]: Start difference. First operand has 86 places, 51 transitions, 387 flow. Second operand 10 states and 1677 transitions. [2023-08-30 07:43:55,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 99 transitions, 786 flow [2023-08-30 07:43:55,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 99 transitions, 736 flow, removed 12 selfloop flow, removed 2 redundant places. [2023-08-30 07:43:55,794 INFO L231 Difference]: Finished difference. Result has 99 places, 69 transitions, 577 flow [2023-08-30 07:43:55,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=577, PETRI_PLACES=99, PETRI_TRANSITIONS=69} [2023-08-30 07:43:55,795 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 59 predicate places. [2023-08-30 07:43:55,795 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 69 transitions, 577 flow [2023-08-30 07:43:55,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 163.36363636363637) internal successors, (1797), 11 states have internal predecessors, (1797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:43:55,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:43:55,796 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 07:43:55,811 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 (18)] Forceful destruction successful, exit code 0 [2023-08-30 07:43:56,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 07:43:56,007 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2023-08-30 07:43:56,008 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:43:56,008 INFO L85 PathProgramCache]: Analyzing trace with hash -768683172, now seen corresponding path program 3 times [2023-08-30 07:43:56,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 07:43:56,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1835069454] [2023-08-30 07:43:56,008 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 07:43:56,008 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 07:43:56,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 07:43:56,010 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 07:43:56,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-08-30 07:43:56,132 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-30 07:43:56,132 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 07:43:56,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 07:43:56,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:43:56,197 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 07:43:56,198 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 07:43:56,198 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 07:43:56,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1835069454] [2023-08-30 07:43:56,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1835069454] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:43:56,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:43:56,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 07:43:56,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992592447] [2023-08-30 07:43:56,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:43:56,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 07:43:56,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 07:43:56,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 07:43:56,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-30 07:43:56,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 396 [2023-08-30 07:43:56,264 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 69 transitions, 577 flow. Second operand has 6 states, 6 states have (on average 166.66666666666666) internal successors, (1000), 6 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:43:56,264 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:43:56,264 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 396 [2023-08-30 07:43:56,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:43:57,302 INFO L130 PetriNetUnfolder]: 3703/7227 cut-off events. [2023-08-30 07:43:57,303 INFO L131 PetriNetUnfolder]: For 14700/14700 co-relation queries the response was YES. [2023-08-30 07:43:57,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28758 conditions, 7227 events. 3703/7227 cut-off events. For 14700/14700 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 50604 event pairs, 900 based on Foata normal form. 80/7307 useless extension candidates. Maximal degree in co-relation 28712. Up to 3202 conditions per place. [2023-08-30 07:43:57,350 INFO L137 encePairwiseOnDemand]: 390/396 looper letters, 87 selfloop transitions, 19 changer transitions 1/107 dead transitions. [2023-08-30 07:43:57,350 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 107 transitions, 1035 flow [2023-08-30 07:43:57,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 07:43:57,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 07:43:57,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1027 transitions. [2023-08-30 07:43:57,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43223905723905726 [2023-08-30 07:43:57,353 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1027 transitions. [2023-08-30 07:43:57,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1027 transitions. [2023-08-30 07:43:57,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:43:57,353 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1027 transitions. [2023-08-30 07:43:57,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 171.16666666666666) internal successors, (1027), 6 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:43:57,357 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 396.0) internal successors, (2772), 7 states have internal predecessors, (2772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:43:57,357 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 396.0) internal successors, (2772), 7 states have internal predecessors, (2772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:43:57,357 INFO L175 Difference]: Start difference. First operand has 99 places, 69 transitions, 577 flow. Second operand 6 states and 1027 transitions. [2023-08-30 07:43:57,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 107 transitions, 1035 flow [2023-08-30 07:43:57,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 107 transitions, 1003 flow, removed 13 selfloop flow, removed 1 redundant places. [2023-08-30 07:43:57,456 INFO L231 Difference]: Finished difference. Result has 105 places, 76 transitions, 685 flow [2023-08-30 07:43:57,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=553, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=685, PETRI_PLACES=105, PETRI_TRANSITIONS=76} [2023-08-30 07:43:57,456 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 65 predicate places. [2023-08-30 07:43:57,457 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 76 transitions, 685 flow [2023-08-30 07:43:57,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 166.66666666666666) internal successors, (1000), 6 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:43:57,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:43:57,458 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 07:43:57,471 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-08-30 07:43:57,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 07:43:57,668 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2023-08-30 07:43:57,669 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:43:57,669 INFO L85 PathProgramCache]: Analyzing trace with hash -311231742, now seen corresponding path program 4 times [2023-08-30 07:43:57,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 07:43:57,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [398169613] [2023-08-30 07:43:57,669 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 07:43:57,669 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 07:43:57,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 07:43:57,670 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 07:43:57,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-08-30 07:43:57,765 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 07:43:57,765 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 07:43:57,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 07:43:57,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:43:57,849 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 07:43:57,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 07:43:57,873 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 07:43:57,873 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 07:43:57,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [398169613] [2023-08-30 07:43:57,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [398169613] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-30 07:43:57,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 07:43:57,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-08-30 07:43:57,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404139191] [2023-08-30 07:43:57,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:43:57,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 07:43:57,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 07:43:57,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 07:43:57,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-08-30 07:43:57,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 396 [2023-08-30 07:43:57,895 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 76 transitions, 685 flow. Second operand has 4 states, 4 states have (on average 170.0) internal successors, (680), 4 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:43:57,895 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:43:57,895 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 396 [2023-08-30 07:43:57,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:43:58,885 INFO L130 PetriNetUnfolder]: 3343/6527 cut-off events. [2023-08-30 07:43:58,885 INFO L131 PetriNetUnfolder]: For 22863/23183 co-relation queries the response was YES. [2023-08-30 07:43:58,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27902 conditions, 6527 events. 3343/6527 cut-off events. For 22863/23183 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 46093 event pairs, 940 based on Foata normal form. 160/6507 useless extension candidates. Maximal degree in co-relation 27854. Up to 4680 conditions per place. [2023-08-30 07:43:58,926 INFO L137 encePairwiseOnDemand]: 392/396 looper letters, 68 selfloop transitions, 17 changer transitions 4/91 dead transitions. [2023-08-30 07:43:58,926 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 91 transitions, 948 flow [2023-08-30 07:43:58,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 07:43:58,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 07:43:58,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 697 transitions. [2023-08-30 07:43:58,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44002525252525254 [2023-08-30 07:43:58,928 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 697 transitions. [2023-08-30 07:43:58,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 697 transitions. [2023-08-30 07:43:58,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:43:58,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 697 transitions. [2023-08-30 07:43:58,930 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 174.25) internal successors, (697), 4 states have internal predecessors, (697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:43:58,932 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 396.0) internal successors, (1980), 5 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:43:58,932 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 396.0) internal successors, (1980), 5 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:43:58,932 INFO L175 Difference]: Start difference. First operand has 105 places, 76 transitions, 685 flow. Second operand 4 states and 697 transitions. [2023-08-30 07:43:58,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 91 transitions, 948 flow [2023-08-30 07:43:59,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 91 transitions, 922 flow, removed 10 selfloop flow, removed 1 redundant places. [2023-08-30 07:43:59,101 INFO L231 Difference]: Finished difference. Result has 109 places, 79 transitions, 755 flow [2023-08-30 07:43:59,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=661, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=755, PETRI_PLACES=109, PETRI_TRANSITIONS=79} [2023-08-30 07:43:59,102 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 69 predicate places. [2023-08-30 07:43:59,102 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 79 transitions, 755 flow [2023-08-30 07:43:59,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 170.0) internal successors, (680), 4 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:43:59,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:43:59,103 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 07:43:59,117 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-08-30 07:43:59,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 07:43:59,313 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2023-08-30 07:43:59,314 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:43:59,314 INFO L85 PathProgramCache]: Analyzing trace with hash 836745722, now seen corresponding path program 1 times [2023-08-30 07:43:59,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 07:43:59,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1035848651] [2023-08-30 07:43:59,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:43:59,314 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 07:43:59,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 07:43:59,315 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 07:43:59,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-08-30 07:43:59,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:43:59,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 07:43:59,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:43:59,447 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 07:43:59,448 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 07:43:59,448 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 07:43:59,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1035848651] [2023-08-30 07:43:59,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1035848651] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:43:59,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:43:59,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 07:43:59,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920629560] [2023-08-30 07:43:59,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:43:59,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 07:43:59,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 07:43:59,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 07:43:59,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 07:43:59,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 396 [2023-08-30 07:43:59,485 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 79 transitions, 755 flow. Second operand has 5 states, 5 states have (on average 167.2) internal successors, (836), 5 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:43:59,485 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:43:59,485 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 396 [2023-08-30 07:43:59,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:44:00,269 INFO L130 PetriNetUnfolder]: 2963/5667 cut-off events. [2023-08-30 07:44:00,269 INFO L131 PetriNetUnfolder]: For 19774/19894 co-relation queries the response was YES. [2023-08-30 07:44:00,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24344 conditions, 5667 events. 2963/5667 cut-off events. For 19774/19894 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 36879 event pairs, 1140 based on Foata normal form. 220/5887 useless extension candidates. Maximal degree in co-relation 24294. Up to 4282 conditions per place. [2023-08-30 07:44:00,298 INFO L137 encePairwiseOnDemand]: 391/396 looper letters, 75 selfloop transitions, 13 changer transitions 2/95 dead transitions. [2023-08-30 07:44:00,299 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 95 transitions, 1013 flow [2023-08-30 07:44:00,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 07:44:00,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 07:44:00,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 851 transitions. [2023-08-30 07:44:00,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4297979797979798 [2023-08-30 07:44:00,301 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 851 transitions. [2023-08-30 07:44:00,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 851 transitions. [2023-08-30 07:44:00,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:44:00,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 851 transitions. [2023-08-30 07:44:00,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 170.2) internal successors, (851), 5 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:44:00,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 396.0) internal successors, (2376), 6 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:44:00,305 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 396.0) internal successors, (2376), 6 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:44:00,305 INFO L175 Difference]: Start difference. First operand has 109 places, 79 transitions, 755 flow. Second operand 5 states and 851 transitions. [2023-08-30 07:44:00,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 95 transitions, 1013 flow [2023-08-30 07:44:00,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 95 transitions, 955 flow, removed 7 selfloop flow, removed 5 redundant places. [2023-08-30 07:44:00,439 INFO L231 Difference]: Finished difference. Result has 109 places, 79 transitions, 750 flow [2023-08-30 07:44:00,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=703, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=750, PETRI_PLACES=109, PETRI_TRANSITIONS=79} [2023-08-30 07:44:00,440 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 69 predicate places. [2023-08-30 07:44:00,440 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 79 transitions, 750 flow [2023-08-30 07:44:00,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 167.2) internal successors, (836), 5 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:44:00,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:44:00,440 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 07:44:00,451 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Ended with exit code 0 [2023-08-30 07:44:00,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 07:44:00,651 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2023-08-30 07:44:00,651 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:44:00,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1034117090, now seen corresponding path program 2 times [2023-08-30 07:44:00,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 07:44:00,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [616544116] [2023-08-30 07:44:00,652 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 07:44:00,652 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 07:44:00,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 07:44:00,653 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 07:44:00,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-08-30 07:44:00,742 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 07:44:00,742 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 07:44:00,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 07:44:00,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:44:00,822 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 07:44:00,822 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 07:44:00,947 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 07:44:00,947 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 07:44:00,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [616544116] [2023-08-30 07:44:00,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [616544116] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 07:44:00,947 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 07:44:00,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-08-30 07:44:00,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650608460] [2023-08-30 07:44:00,948 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 07:44:00,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 07:44:00,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 07:44:00,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 07:44:00,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-08-30 07:44:01,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 396 [2023-08-30 07:44:01,059 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 79 transitions, 750 flow. Second operand has 10 states, 10 states have (on average 168.5) internal successors, (1685), 10 states have internal predecessors, (1685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:44:01,059 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:44:01,059 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 396 [2023-08-30 07:44:01,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:44:02,722 INFO L130 PetriNetUnfolder]: 4723/8687 cut-off events. [2023-08-30 07:44:02,722 INFO L131 PetriNetUnfolder]: For 29123/30043 co-relation queries the response was YES. [2023-08-30 07:44:02,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38725 conditions, 8687 events. 4723/8687 cut-off events. For 29123/30043 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 61150 event pairs, 580 based on Foata normal form. 1520/10107 useless extension candidates. Maximal degree in co-relation 38676. Up to 2680 conditions per place. [2023-08-30 07:44:02,794 INFO L137 encePairwiseOnDemand]: 391/396 looper letters, 88 selfloop transitions, 41 changer transitions 3/134 dead transitions. [2023-08-30 07:44:02,794 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 134 transitions, 1388 flow [2023-08-30 07:44:02,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 07:44:02,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 07:44:02,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1721 transitions. [2023-08-30 07:44:02,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4345959595959596 [2023-08-30 07:44:02,798 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1721 transitions. [2023-08-30 07:44:02,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1721 transitions. [2023-08-30 07:44:02,799 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:44:02,799 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1721 transitions. [2023-08-30 07:44:02,802 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 172.1) internal successors, (1721), 10 states have internal predecessors, (1721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:44:02,806 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 396.0) internal successors, (4356), 11 states have internal predecessors, (4356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:44:02,806 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 396.0) internal successors, (4356), 11 states have internal predecessors, (4356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:44:02,807 INFO L175 Difference]: Start difference. First operand has 109 places, 79 transitions, 750 flow. Second operand 10 states and 1721 transitions. [2023-08-30 07:44:02,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 134 transitions, 1388 flow [2023-08-30 07:44:03,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 134 transitions, 1314 flow, removed 20 selfloop flow, removed 3 redundant places. [2023-08-30 07:44:03,094 INFO L231 Difference]: Finished difference. Result has 119 places, 88 transitions, 891 flow [2023-08-30 07:44:03,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=706, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=891, PETRI_PLACES=119, PETRI_TRANSITIONS=88} [2023-08-30 07:44:03,094 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 79 predicate places. [2023-08-30 07:44:03,094 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 88 transitions, 891 flow [2023-08-30 07:44:03,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 168.5) internal successors, (1685), 10 states have internal predecessors, (1685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:44:03,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:44:03,095 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 07:44:03,109 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Ended with exit code 0 [2023-08-30 07:44:03,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 07:44:03,305 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2023-08-30 07:44:03,306 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:44:03,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1708162462, now seen corresponding path program 3 times [2023-08-30 07:44:03,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 07:44:03,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1651154106] [2023-08-30 07:44:03,306 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 07:44:03,306 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 07:44:03,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 07:44:03,307 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 07:44:03,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-08-30 07:44:03,406 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-30 07:44:03,406 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 07:44:03,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 07:44:03,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:44:03,463 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-30 07:44:03,463 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 07:44:03,464 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 07:44:03,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1651154106] [2023-08-30 07:44:03,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1651154106] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:44:03,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:44:03,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 07:44:03,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967920007] [2023-08-30 07:44:03,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:44:03,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 07:44:03,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 07:44:03,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 07:44:03,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-30 07:44:03,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 396 [2023-08-30 07:44:03,499 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 88 transitions, 891 flow. Second operand has 5 states, 5 states have (on average 167.2) internal successors, (836), 5 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:44:03,499 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:44:03,499 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 396 [2023-08-30 07:44:03,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:44:04,890 INFO L130 PetriNetUnfolder]: 5623/10127 cut-off events. [2023-08-30 07:44:04,890 INFO L131 PetriNetUnfolder]: For 39448/39628 co-relation queries the response was YES. [2023-08-30 07:44:04,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49709 conditions, 10127 events. 5623/10127 cut-off events. For 39448/39628 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 68898 event pairs, 860 based on Foata normal form. 400/10527 useless extension candidates. Maximal degree in co-relation 49656. Up to 8780 conditions per place. [2023-08-30 07:44:04,962 INFO L137 encePairwiseOnDemand]: 391/396 looper letters, 84 selfloop transitions, 15 changer transitions 1/105 dead transitions. [2023-08-30 07:44:04,962 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 105 transitions, 1205 flow [2023-08-30 07:44:04,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 07:44:04,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 07:44:04,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 851 transitions. [2023-08-30 07:44:04,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4297979797979798 [2023-08-30 07:44:04,964 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 851 transitions. [2023-08-30 07:44:04,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 851 transitions. [2023-08-30 07:44:04,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:44:04,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 851 transitions. [2023-08-30 07:44:04,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 170.2) internal successors, (851), 5 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:44:04,967 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 396.0) internal successors, (2376), 6 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:44:04,967 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 396.0) internal successors, (2376), 6 states have internal predecessors, (2376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:44:04,967 INFO L175 Difference]: Start difference. First operand has 119 places, 88 transitions, 891 flow. Second operand 5 states and 851 transitions. [2023-08-30 07:44:04,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 105 transitions, 1205 flow [2023-08-30 07:44:05,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 105 transitions, 1102 flow, removed 25 selfloop flow, removed 4 redundant places. [2023-08-30 07:44:05,300 INFO L231 Difference]: Finished difference. Result has 121 places, 90 transitions, 869 flow [2023-08-30 07:44:05,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=807, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=869, PETRI_PLACES=121, PETRI_TRANSITIONS=90} [2023-08-30 07:44:05,301 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 81 predicate places. [2023-08-30 07:44:05,301 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 90 transitions, 869 flow [2023-08-30 07:44:05,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 167.2) internal successors, (836), 5 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:44:05,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:44:05,302 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 07:44:05,310 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 (23)] Forceful destruction successful, exit code 0 [2023-08-30 07:44:05,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 07:44:05,504 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2023-08-30 07:44:05,504 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:44:05,504 INFO L85 PathProgramCache]: Analyzing trace with hash 569297098, now seen corresponding path program 4 times [2023-08-30 07:44:05,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 07:44:05,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1132537685] [2023-08-30 07:44:05,504 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 07:44:05,505 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 07:44:05,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 07:44:05,506 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 07:44:05,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-08-30 07:44:05,592 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 07:44:05,592 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 07:44:05,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-30 07:44:05,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:44:05,718 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 07:44:05,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 07:44:05,916 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 07:44:05,917 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 07:44:05,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1132537685] [2023-08-30 07:44:05,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1132537685] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 07:44:05,917 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 07:44:05,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 15 [2023-08-30 07:44:05,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265800199] [2023-08-30 07:44:05,918 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 07:44:05,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-30 07:44:05,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 07:44:05,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-30 07:44:05,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2023-08-30 07:44:06,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 396 [2023-08-30 07:44:06,263 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 90 transitions, 869 flow. Second operand has 15 states, 15 states have (on average 163.0) internal successors, (2445), 15 states have internal predecessors, (2445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:44:06,263 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:44:06,263 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 396 [2023-08-30 07:44:06,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:44:09,462 INFO L130 PetriNetUnfolder]: 7923/14527 cut-off events. [2023-08-30 07:44:09,463 INFO L131 PetriNetUnfolder]: For 57495/57495 co-relation queries the response was YES. [2023-08-30 07:44:09,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65513 conditions, 14527 events. 7923/14527 cut-off events. For 57495/57495 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 106404 event pairs, 1900 based on Foata normal form. 520/15047 useless extension candidates. Maximal degree in co-relation 65458. Up to 8042 conditions per place. [2023-08-30 07:44:09,555 INFO L137 encePairwiseOnDemand]: 388/396 looper letters, 129 selfloop transitions, 64 changer transitions 1/194 dead transitions. [2023-08-30 07:44:09,555 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 194 transitions, 1902 flow [2023-08-30 07:44:09,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-30 07:44:09,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-30 07:44:09,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3329 transitions. [2023-08-30 07:44:09,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42032828282828283 [2023-08-30 07:44:09,559 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3329 transitions. [2023-08-30 07:44:09,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3329 transitions. [2023-08-30 07:44:09,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:44:09,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3329 transitions. [2023-08-30 07:44:09,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 166.45) internal successors, (3329), 20 states have internal predecessors, (3329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:44:09,566 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 396.0) internal successors, (8316), 21 states have internal predecessors, (8316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:44:09,567 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 396.0) internal successors, (8316), 21 states have internal predecessors, (8316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:44:09,567 INFO L175 Difference]: Start difference. First operand has 121 places, 90 transitions, 869 flow. Second operand 20 states and 3329 transitions. [2023-08-30 07:44:09,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 194 transitions, 1902 flow [2023-08-30 07:44:10,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 194 transitions, 1862 flow, removed 12 selfloop flow, removed 2 redundant places. [2023-08-30 07:44:10,115 INFO L231 Difference]: Finished difference. Result has 149 places, 141 transitions, 1529 flow [2023-08-30 07:44:10,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=396, PETRI_DIFFERENCE_MINUEND_FLOW=843, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1529, PETRI_PLACES=149, PETRI_TRANSITIONS=141} [2023-08-30 07:44:10,116 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 109 predicate places. [2023-08-30 07:44:10,116 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 141 transitions, 1529 flow [2023-08-30 07:44:10,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 163.0) internal successors, (2445), 15 states have internal predecessors, (2445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:44:10,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:44:10,117 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 07:44:10,125 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 (24)] Forceful destruction successful, exit code 0 [2023-08-30 07:44:10,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 07:44:10,318 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 27 more)] === [2023-08-30 07:44:10,318 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:44:10,318 INFO L85 PathProgramCache]: Analyzing trace with hash -854847242, now seen corresponding path program 1 times [2023-08-30 07:44:10,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 07:44:10,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2012361147] [2023-08-30 07:44:10,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:44:10,318 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 07:44:10,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 07:44:10,319 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 07:44:10,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-08-30 07:44:10,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:44:10,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 07:44:10,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:44:11,668 INFO L321 Elim1Store]: treesize reduction 420, result has 20.6 percent of original size [2023-08-30 07:44:11,668 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 20 new quantified variables, introduced 66 case distinctions, treesize of input 1313 treesize of output 237 [2023-08-30 07:48:34,775 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 101 [2023-08-30 07:48:34,777 WARN L230 Executor]: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2023-08-30 07:48:34,777 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 07:48:34,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2012361147] [2023-08-30 07:48:34,778 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2023-08-30 07:48:34,786 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 (25)] Forceful destruction successful, exit code 0 [2023-08-30 07:48:34,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 07:48:34,979 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:61) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.getRedundancy(SimplifyDDA.java:620) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getRedundancy(SimplifyDDAWithTimeout.java:120) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA$Simplifier.walk(SimplifyDDA.java:370) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.simplifyOnce(SimplifyDDA.java:649) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getSimplifiedTerm(SimplifyDDAWithTimeout.java:180) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:187) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:160) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:376) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:311) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:582) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:199) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:299) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:210) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1465) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:658) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:239) ... 51 more [2023-08-30 07:48:34,982 INFO L158 Benchmark]: Toolchain (without parser) took 359225.90ms. Allocated memory was 75.5MB in the beginning and 2.9GB in the end (delta: 2.9GB). Free memory was 52.8MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 1.8GB. Max. memory is 16.1GB. [2023-08-30 07:48:34,982 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 58.7MB. Free memory was 36.3MB in the beginning and 36.3MB in the end (delta: 51.3kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 07:48:34,982 INFO L158 Benchmark]: CACSL2BoogieTranslator took 358.93ms. Allocated memory is still 75.5MB. Free memory was 52.6MB in the beginning and 39.3MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-08-30 07:48:34,983 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.08ms. Allocated memory is still 75.5MB. Free memory was 39.1MB in the beginning and 37.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 07:48:34,983 INFO L158 Benchmark]: Boogie Preprocessor took 58.87ms. Allocated memory is still 75.5MB. Free memory was 37.2MB in the beginning and 35.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 07:48:34,984 INFO L158 Benchmark]: RCFGBuilder took 767.32ms. Allocated memory is still 75.5MB. Free memory was 35.2MB in the beginning and 33.7MB in the end (delta: 1.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-30 07:48:34,984 INFO L158 Benchmark]: TraceAbstraction took 357976.97ms. Allocated memory was 75.5MB in the beginning and 2.9GB in the end (delta: 2.9GB). Free memory was 33.0MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 1.7GB. Max. memory is 16.1GB. [2023-08-30 07:48:34,985 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 58.7MB. Free memory was 36.3MB in the beginning and 36.3MB in the end (delta: 51.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 358.93ms. Allocated memory is still 75.5MB. Free memory was 52.6MB in the beginning and 39.3MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 58.08ms. Allocated memory is still 75.5MB. Free memory was 39.1MB in the beginning and 37.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 58.87ms. Allocated memory is still 75.5MB. Free memory was 37.2MB in the beginning and 35.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 767.32ms. Allocated memory is still 75.5MB. Free memory was 35.2MB in the beginning and 33.7MB in the end (delta: 1.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * TraceAbstraction took 357976.97ms. Allocated memory was 75.5MB in the beginning and 2.9GB in the end (delta: 2.9GB). Free memory was 33.0MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 1.7GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 17.2s, 176 PlacesBefore, 40 PlacesAfterwards, 184 TransitionsBefore, 36 TransitionsAfterwards, 3708 CoEnabledTransitionPairs, 7 FixpointIterations, 86 TrivialSequentialCompositions, 80 ConcurrentSequentialCompositions, 19 TrivialYvCompositions, 9 ConcurrentYvCompositions, 12 ChoiceCompositions, 206 TotalNumberOfCompositions, 3611 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3524, independent: 3514, independent conditional: 0, independent unconditional: 3514, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1931, independent: 1927, independent conditional: 0, independent unconditional: 1927, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3524, independent: 1587, independent conditional: 0, independent unconditional: 1587, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 1931, unknown conditional: 0, unknown unconditional: 1931] , Statistics on independence cache: Total cache size (in pairs): 55, Positive cache size: 54, Positive conditional cache size: 0, Positive unconditional cache size: 54, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory")