./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/weaver/popl20-more-array-sum.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-array-sum.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 c328ca6a6071aea6db12d1e311bd2e5e22fce6c700c884e61df52925e139f834 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 03:09:17,849 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 03:09:17,851 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 03:09:17,879 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 03:09:17,880 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 03:09:17,881 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 03:09:17,882 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 03:09:17,883 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 03:09:17,885 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 03:09:17,885 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 03:09:17,886 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 03:09:17,887 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 03:09:17,887 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 03:09:17,888 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 03:09:17,889 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 03:09:17,890 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 03:09:17,891 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 03:09:17,891 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 03:09:17,893 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 03:09:17,894 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 03:09:17,896 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 03:09:17,897 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 03:09:17,898 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 03:09:17,899 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 03:09:17,902 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 03:09:17,902 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 03:09:17,902 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 03:09:17,903 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 03:09:17,903 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 03:09:17,904 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 03:09:17,907 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 03:09:17,907 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 03:09:17,908 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 03:09:17,909 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 03:09:17,910 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 03:09:17,913 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 03:09:17,913 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 03:09:17,914 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 03:09:17,915 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 03:09:17,915 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 03:09:17,928 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 03:09:17,930 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-09-01 03:09:17,963 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 03:09:17,964 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 03:09:17,965 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 03:09:17,966 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 03:09:17,967 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 03:09:17,967 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 03:09:17,968 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 03:09:17,968 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 03:09:17,968 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 03:09:17,969 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 03:09:17,969 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 03:09:17,969 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 03:09:17,970 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 03:09:17,970 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 03:09:17,970 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 03:09:17,970 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-09-01 03:09:17,970 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-09-01 03:09:17,971 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-09-01 03:09:17,971 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 03:09:17,971 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-09-01 03:09:17,971 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 03:09:17,971 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 03:09:17,972 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 03:09:17,972 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 03:09:17,972 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 03:09:17,972 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 03:09:17,972 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 03:09:17,973 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 03:09:17,973 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 03:09:17,973 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 03:09:17,973 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 03:09:17,973 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 03:09:17,974 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 03:09:17,974 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 03:09:17,974 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c328ca6a6071aea6db12d1e311bd2e5e22fce6c700c884e61df52925e139f834 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 03:09:18,242 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 03:09:18,266 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 03:09:18,268 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 03:09:18,269 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 03:09:18,269 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 03:09:18,271 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-array-sum.wvr.c [2023-09-01 03:09:19,456 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 03:09:19,658 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 03:09:19,658 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-array-sum.wvr.c [2023-09-01 03:09:19,664 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/553f91ba9/722cfbc643ff446b9c82d72635e6bc93/FLAGa3fe5f33d [2023-09-01 03:09:19,686 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/553f91ba9/722cfbc643ff446b9c82d72635e6bc93 [2023-09-01 03:09:19,688 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 03:09:19,690 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 03:09:19,692 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 03:09:19,693 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 03:09:19,695 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 03:09:19,696 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 03:09:19" (1/1) ... [2023-09-01 03:09:19,697 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bc8a4b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 03:09:19, skipping insertion in model container [2023-09-01 03:09:19,697 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 03:09:19" (1/1) ... [2023-09-01 03:09:19,703 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 03:09:19,727 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 03:09:19,911 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/popl20-more-array-sum.wvr.c[2835,2848] [2023-09-01 03:09:19,929 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 03:09:19,937 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) [2023-09-01 03:09:19,938 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6375114e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 03:09:19, skipping insertion in model container [2023-09-01 03:09:19,938 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 03:09:19,938 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-09-01 03:09:19,940 INFO L158 Benchmark]: Toolchain (without parser) took 249.37ms. Allocated memory is still 86.0MB. Free memory was 63.9MB in the beginning and 53.9MB in the end (delta: 10.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-09-01 03:09:19,940 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 60.8MB. Free memory is still 39.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 03:09:19,940 INFO L158 Benchmark]: CACSL2BoogieTranslator took 246.42ms. Allocated memory is still 86.0MB. Free memory was 63.7MB in the beginning and 54.1MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-09-01 03:09:19,946 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 60.8MB. Free memory is still 39.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 246.42ms. Allocated memory is still 86.0MB. Free memory was 63.7MB in the beginning and 54.1MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 115]: 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/popl20-more-array-sum.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 c328ca6a6071aea6db12d1e311bd2e5e22fce6c700c884e61df52925e139f834 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 03:09:21,696 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 03:09:21,699 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 03:09:21,742 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 03:09:21,744 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 03:09:21,747 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 03:09:21,749 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 03:09:21,751 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 03:09:21,753 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 03:09:21,757 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 03:09:21,758 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 03:09:21,762 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 03:09:21,762 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 03:09:21,764 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 03:09:21,765 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 03:09:21,769 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 03:09:21,769 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 03:09:21,771 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 03:09:21,772 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 03:09:21,777 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 03:09:21,778 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 03:09:21,779 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 03:09:21,780 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 03:09:21,780 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 03:09:21,787 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 03:09:21,787 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 03:09:21,788 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 03:09:21,790 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 03:09:21,790 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 03:09:21,791 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 03:09:21,791 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 03:09:21,797 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 03:09:21,798 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 03:09:21,799 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 03:09:21,800 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 03:09:21,800 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 03:09:21,801 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 03:09:21,801 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 03:09:21,801 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 03:09:21,807 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 03:09:21,807 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 03:09:21,809 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-09-01 03:09:21,843 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 03:09:21,843 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 03:09:21,844 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 03:09:21,844 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 03:09:21,845 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 03:09:21,845 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 03:09:21,846 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 03:09:21,846 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 03:09:21,846 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 03:09:21,847 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 03:09:21,847 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 03:09:21,848 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 03:09:21,848 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 03:09:21,848 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 03:09:21,848 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 03:09:21,848 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-09-01 03:09:21,849 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-09-01 03:09:21,849 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-09-01 03:09:21,849 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 03:09:21,849 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-09-01 03:09:21,850 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-09-01 03:09:21,850 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-09-01 03:09:21,850 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 03:09:21,850 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 03:09:21,850 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 03:09:21,851 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 03:09:21,851 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 03:09:21,851 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 03:09:21,851 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 03:09:21,852 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 03:09:21,852 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-09-01 03:09:21,852 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-09-01 03:09:21,852 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 03:09:21,853 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 03:09:21,853 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 03:09:21,853 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-09-01 03:09:21,853 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 03:09:21,853 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c328ca6a6071aea6db12d1e311bd2e5e22fce6c700c884e61df52925e139f834 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 03:09:22,188 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 03:09:22,208 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 03:09:22,211 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 03:09:22,212 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 03:09:22,212 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 03:09:22,214 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-array-sum.wvr.c [2023-09-01 03:09:23,353 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 03:09:23,560 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 03:09:23,561 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-array-sum.wvr.c [2023-09-01 03:09:23,566 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f19e546e3/286ccbd0bbbc4441b911d716a964b3c8/FLAG7effafc5d [2023-09-01 03:09:23,581 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f19e546e3/286ccbd0bbbc4441b911d716a964b3c8 [2023-09-01 03:09:23,583 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 03:09:23,584 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 03:09:23,587 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 03:09:23,587 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 03:09:23,594 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 03:09:23,595 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 03:09:23" (1/1) ... [2023-09-01 03:09:23,596 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bd0e924 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 03:09:23, skipping insertion in model container [2023-09-01 03:09:23,596 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 03:09:23" (1/1) ... [2023-09-01 03:09:23,602 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 03:09:23,625 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 03:09:23,812 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/popl20-more-array-sum.wvr.c[2835,2848] [2023-09-01 03:09:23,833 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 03:09:23,849 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-09-01 03:09:23,858 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 03:09:23,886 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/popl20-more-array-sum.wvr.c[2835,2848] [2023-09-01 03:09:23,891 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 03:09:23,901 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 03:09:23,975 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/popl20-more-array-sum.wvr.c[2835,2848] [2023-09-01 03:09:23,980 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 03:09:23,996 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 03:09:24,010 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 03:09:24,017 INFO L208 MainTranslator]: Completed translation [2023-09-01 03:09:24,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 03:09:24 WrapperNode [2023-09-01 03:09:24,018 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 03:09:24,019 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 03:09:24,019 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 03:09:24,019 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 03:09:24,026 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 03:09:24" (1/1) ... [2023-09-01 03:09:24,047 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 03:09:24" (1/1) ... [2023-09-01 03:09:24,088 INFO L138 Inliner]: procedures = 27, calls = 58, calls flagged for inlining = 16, calls inlined = 28, statements flattened = 274 [2023-09-01 03:09:24,089 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 03:09:24,090 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 03:09:24,090 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 03:09:24,091 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 03:09:24,099 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 03:09:24" (1/1) ... [2023-09-01 03:09:24,100 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 03:09:24" (1/1) ... [2023-09-01 03:09:24,115 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 03:09:24" (1/1) ... [2023-09-01 03:09:24,117 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 03:09:24" (1/1) ... [2023-09-01 03:09:24,126 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 03:09:24" (1/1) ... [2023-09-01 03:09:24,143 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 03:09:24" (1/1) ... [2023-09-01 03:09:24,146 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 03:09:24" (1/1) ... [2023-09-01 03:09:24,151 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 03:09:24" (1/1) ... [2023-09-01 03:09:24,154 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 03:09:24,156 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 03:09:24,156 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 03:09:24,156 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 03:09:24,157 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 03:09:24" (1/1) ... [2023-09-01 03:09:24,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 03:09:24,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 03:09:24,186 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) [2023-09-01 03:09:24,229 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 03:09:24,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-09-01 03:09:24,230 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 03:09:24,230 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-09-01 03:09:24,230 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 03:09:24,231 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 03:09:24,231 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 03:09:24,231 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 03:09:24,231 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-09-01 03:09:24,231 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-09-01 03:09:24,231 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 03:09:24,232 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 03:09:24,232 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 03:09:24,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 03:09:24,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 03:09:24,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 03:09:24,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-09-01 03:09:24,234 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 03:09:24,221 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 [2023-09-01 03:09:24,398 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 03:09:24,419 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 03:09:25,207 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 03:09:25,524 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 03:09:25,524 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-09-01 03:09:25,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 03:09:25 BoogieIcfgContainer [2023-09-01 03:09:25,527 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 03:09:25,530 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 03:09:25,530 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 03:09:25,533 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 03:09:25,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 03:09:23" (1/3) ... [2023-09-01 03:09:25,534 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7038597c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 03:09:25, skipping insertion in model container [2023-09-01 03:09:25,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 03:09:24" (2/3) ... [2023-09-01 03:09:25,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7038597c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 03:09:25, skipping insertion in model container [2023-09-01 03:09:25,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 03:09:25" (3/3) ... [2023-09-01 03:09:25,537 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum.wvr.c [2023-09-01 03:09:25,552 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 03:09:25,553 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2023-09-01 03:09:25,553 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 03:09:25,672 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 03:09:25,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 205 places, 211 transitions, 446 flow [2023-09-01 03:09:25,819 INFO L130 PetriNetUnfolder]: 16/208 cut-off events. [2023-09-01 03:09:25,819 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 03:09:25,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221 conditions, 208 events. 16/208 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 252 event pairs, 0 based on Foata normal form. 0/162 useless extension candidates. Maximal degree in co-relation 158. Up to 2 conditions per place. [2023-09-01 03:09:25,825 INFO L82 GeneralOperation]: Start removeDead. Operand has 205 places, 211 transitions, 446 flow [2023-09-01 03:09:25,835 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 198 places, 204 transitions, 426 flow [2023-09-01 03:09:25,838 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 03:09:25,851 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 198 places, 204 transitions, 426 flow [2023-09-01 03:09:25,855 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 198 places, 204 transitions, 426 flow [2023-09-01 03:09:25,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 198 places, 204 transitions, 426 flow [2023-09-01 03:09:25,902 INFO L130 PetriNetUnfolder]: 16/204 cut-off events. [2023-09-01 03:09:25,902 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 03:09:25,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217 conditions, 204 events. 16/204 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 250 event pairs, 0 based on Foata normal form. 0/159 useless extension candidates. Maximal degree in co-relation 158. Up to 2 conditions per place. [2023-09-01 03:09:25,907 INFO L119 LiptonReduction]: Number of co-enabled transitions 2970 [2023-09-01 03:09:51,218 INFO L134 LiptonReduction]: Checked pairs total: 4447 [2023-09-01 03:09:51,219 INFO L136 LiptonReduction]: Total number of compositions: 215 [2023-09-01 03:09:51,231 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 03:09:51,236 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;@310966e0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 03:09:51,237 INFO L358 AbstractCegarLoop]: Starting to check reachability of 45 error locations. [2023-09-01 03:09:51,240 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-09-01 03:09:51,240 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 03:09:51,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 03:09:51,241 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-09-01 03:09:51,241 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2023-09-01 03:09:51,245 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 03:09:51,245 INFO L85 PathProgramCache]: Analyzing trace with hash 35461, now seen corresponding path program 1 times [2023-09-01 03:09:51,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 03:09:51,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [399267079] [2023-09-01 03:09:51,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 03:09:51,262 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 03:09:51,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 03:09:51,269 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) [2023-09-01 03:09:51,277 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 [2023-09-01 03:09:51,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 03:09:51,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 3 conjunts are in the unsatisfiable core [2023-09-01 03:09:51,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 03:09:51,543 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2023-09-01 03:09:51,544 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 3 case distinctions, treesize of input 15 treesize of output 50 [2023-09-01 03:09:51,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 03:09:51,573 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 03:09:51,574 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 03:09:51,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [399267079] [2023-09-01 03:09:51,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [399267079] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 03:09:51,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 03:09:51,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 03:09:51,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481440838] [2023-09-01 03:09:51,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 03:09:51,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 03:09:51,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 03:09:51,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 03:09:51,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 03:09:51,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 426 [2023-09-01 03:09:51,776 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 57 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 173.66666666666666) internal successors, (521), 3 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:09:51,776 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 03:09:51,776 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 426 [2023-09-01 03:09:51,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 03:09:53,591 INFO L130 PetriNetUnfolder]: 9544/11885 cut-off events. [2023-09-01 03:09:53,591 INFO L131 PetriNetUnfolder]: For 97/97 co-relation queries the response was YES. [2023-09-01 03:09:53,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23920 conditions, 11885 events. 9544/11885 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 1152. Compared 55218 event pairs, 4848 based on Foata normal form. 0/2845 useless extension candidates. Maximal degree in co-relation 21472. Up to 11829 conditions per place. [2023-09-01 03:09:53,704 INFO L137 encePairwiseOnDemand]: 422/426 looper letters, 50 selfloop transitions, 1 changer transitions 0/54 dead transitions. [2023-09-01 03:09:53,704 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 54 transitions, 228 flow [2023-09-01 03:09:53,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 03:09:53,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 03:09:53,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 573 transitions. [2023-09-01 03:09:53,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44835680751173707 [2023-09-01 03:09:53,728 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 573 transitions. [2023-09-01 03:09:53,728 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 573 transitions. [2023-09-01 03:09:53,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 03:09:53,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 573 transitions. [2023-09-01 03:09:53,736 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 191.0) internal successors, (573), 3 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:09:53,741 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 426.0) internal successors, (1704), 4 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:09:53,742 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 426.0) internal successors, (1704), 4 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:09:53,743 INFO L175 Difference]: Start difference. First operand has 62 places, 57 transitions, 132 flow. Second operand 3 states and 573 transitions. [2023-09-01 03:09:53,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 54 transitions, 228 flow [2023-09-01 03:09:53,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 54 transitions, 216 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-09-01 03:09:53,754 INFO L231 Difference]: Finished difference. Result has 55 places, 54 transitions, 116 flow [2023-09-01 03:09:53,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=426, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=55, PETRI_TRANSITIONS=54} [2023-09-01 03:09:53,758 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -7 predicate places. [2023-09-01 03:09:53,758 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 54 transitions, 116 flow [2023-09-01 03:09:53,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.66666666666666) internal successors, (521), 3 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:09:53,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 03:09:53,759 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-09-01 03:09:53,775 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 [2023-09-01 03:09:53,969 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 [2023-09-01 03:09:53,969 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2023-09-01 03:09:53,970 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 03:09:53,970 INFO L85 PathProgramCache]: Analyzing trace with hash 35460, now seen corresponding path program 1 times [2023-09-01 03:09:53,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 03:09:53,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [152231493] [2023-09-01 03:09:53,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 03:09:53,971 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 [2023-09-01 03:09:53,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 03:09:53,976 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) [2023-09-01 03:09:53,979 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 [2023-09-01 03:09:54,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 03:09:54,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 9 conjunts are in the unsatisfiable core [2023-09-01 03:09:54,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 03:09:54,140 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2023-09-01 03:09:54,140 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 3 case distinctions, treesize of input 17 treesize of output 44 [2023-09-01 03:09:54,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 03:09:54,183 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 03:09:54,183 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 03:09:54,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [152231493] [2023-09-01 03:09:54,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [152231493] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 03:09:54,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 03:09:54,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 03:09:54,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409537294] [2023-09-01 03:09:54,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 03:09:54,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 03:09:54,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 03:09:54,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 03:09:54,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 03:09:54,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 426 [2023-09-01 03:09:54,372 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 54 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 173.66666666666666) internal successors, (521), 3 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:09:54,372 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 03:09:54,372 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 426 [2023-09-01 03:09:54,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 03:09:57,493 INFO L130 PetriNetUnfolder]: 19073/23753 cut-off events. [2023-09-01 03:09:57,493 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-09-01 03:09:57,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47525 conditions, 23753 events. 19073/23753 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 2192. Compared 119060 event pairs, 9693 based on Foata normal form. 0/5697 useless extension candidates. Maximal degree in co-relation 47519. Up to 11826 conditions per place. [2023-09-01 03:09:57,628 INFO L137 encePairwiseOnDemand]: 420/426 looper letters, 95 selfloop transitions, 4 changer transitions 0/102 dead transitions. [2023-09-01 03:09:57,628 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 102 transitions, 416 flow [2023-09-01 03:09:57,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 03:09:57,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 03:09:57,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 620 transitions. [2023-09-01 03:09:57,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48513302034428796 [2023-09-01 03:09:57,631 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 620 transitions. [2023-09-01 03:09:57,631 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 620 transitions. [2023-09-01 03:09:57,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 03:09:57,632 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 620 transitions. [2023-09-01 03:09:57,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 206.66666666666666) internal successors, (620), 3 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:09:57,637 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 426.0) internal successors, (1704), 4 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:09:57,638 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 426.0) internal successors, (1704), 4 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:09:57,638 INFO L175 Difference]: Start difference. First operand has 55 places, 54 transitions, 116 flow. Second operand 3 states and 620 transitions. [2023-09-01 03:09:57,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 102 transitions, 416 flow [2023-09-01 03:09:57,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 102 transitions, 415 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 03:09:57,641 INFO L231 Difference]: Finished difference. Result has 58 places, 57 transitions, 147 flow [2023-09-01 03:09:57,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=426, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=147, PETRI_PLACES=58, PETRI_TRANSITIONS=57} [2023-09-01 03:09:57,643 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -4 predicate places. [2023-09-01 03:09:57,644 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 57 transitions, 147 flow [2023-09-01 03:09:57,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.66666666666666) internal successors, (521), 3 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:09:57,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 03:09:57,646 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 03:09:57,659 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-09-01 03:09:57,846 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 [2023-09-01 03:09:57,846 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2023-09-01 03:09:57,847 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 03:09:57,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1103174, now seen corresponding path program 1 times [2023-09-01 03:09:57,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 03:09:57,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [859539715] [2023-09-01 03:09:57,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 03:09:57,848 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 [2023-09-01 03:09:57,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 03:09:57,849 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) [2023-09-01 03:09:57,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-09-01 03:09:57,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 03:09:57,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 10 conjunts are in the unsatisfiable core [2023-09-01 03:09:57,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 03:09:57,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 03:09:57,967 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 03:09:57,968 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 03:09:57,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [859539715] [2023-09-01 03:09:57,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [859539715] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 03:09:57,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 03:09:57,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 03:09:57,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154457523] [2023-09-01 03:09:57,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 03:09:57,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 03:09:57,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 03:09:57,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 03:09:57,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 03:09:58,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 426 [2023-09-01 03:09:58,096 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 57 transitions, 147 flow. Second operand has 4 states, 4 states have (on average 174.75) internal successors, (699), 4 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:09:58,096 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 03:09:58,096 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 426 [2023-09-01 03:09:58,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 03:09:59,389 INFO L130 PetriNetUnfolder]: 9544/11888 cut-off events. [2023-09-01 03:09:59,390 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-09-01 03:09:59,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23802 conditions, 11888 events. 9544/11888 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 1152. Compared 55298 event pairs, 4848 based on Foata normal form. 3/2853 useless extension candidates. Maximal degree in co-relation 23793. Up to 11830 conditions per place. [2023-09-01 03:09:59,450 INFO L137 encePairwiseOnDemand]: 419/426 looper letters, 49 selfloop transitions, 4 changer transitions 1/57 dead transitions. [2023-09-01 03:09:59,450 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 57 transitions, 255 flow [2023-09-01 03:09:59,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 03:09:59,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 03:09:59,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 757 transitions. [2023-09-01 03:09:59,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4442488262910798 [2023-09-01 03:09:59,453 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 757 transitions. [2023-09-01 03:09:59,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 757 transitions. [2023-09-01 03:09:59,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 03:09:59,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 757 transitions. [2023-09-01 03:09:59,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 189.25) internal successors, (757), 4 states have internal predecessors, (757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:09:59,459 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 426.0) internal successors, (2130), 5 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:09:59,460 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 426.0) internal successors, (2130), 5 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:09:59,460 INFO L175 Difference]: Start difference. First operand has 58 places, 57 transitions, 147 flow. Second operand 4 states and 757 transitions. [2023-09-01 03:09:59,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 57 transitions, 255 flow [2023-09-01 03:09:59,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 57 transitions, 247 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 03:09:59,467 INFO L231 Difference]: Finished difference. Result has 61 places, 56 transitions, 159 flow [2023-09-01 03:09:59,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=426, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=159, PETRI_PLACES=61, PETRI_TRANSITIONS=56} [2023-09-01 03:09:59,469 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -1 predicate places. [2023-09-01 03:09:59,469 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 56 transitions, 159 flow [2023-09-01 03:09:59,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 174.75) internal successors, (699), 4 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:09:59,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 03:09:59,470 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 03:09:59,483 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 [2023-09-01 03:09:59,683 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 [2023-09-01 03:09:59,684 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2023-09-01 03:09:59,684 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 03:09:59,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1102015, now seen corresponding path program 1 times [2023-09-01 03:09:59,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 03:09:59,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1883871001] [2023-09-01 03:09:59,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 03:09:59,685 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 [2023-09-01 03:09:59,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 03:09:59,687 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) [2023-09-01 03:09:59,690 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 [2023-09-01 03:09:59,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 03:09:59,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 11 conjunts are in the unsatisfiable core [2023-09-01 03:09:59,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 03:09:59,856 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2023-09-01 03:09:59,856 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 3 case distinctions, treesize of input 17 treesize of output 44 [2023-09-01 03:09:59,907 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 03:09:59,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 03:10:00,148 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 03:10:00,149 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 03:10:00,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1883871001] [2023-09-01 03:10:00,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1883871001] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 03:10:00,149 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-09-01 03:10:00,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-09-01 03:10:00,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772790995] [2023-09-01 03:10:00,150 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-09-01 03:10:00,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 03:10:00,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 03:10:00,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 03:10:00,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-09-01 03:10:00,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 426 [2023-09-01 03:10:00,813 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 56 transitions, 159 flow. Second operand has 6 states, 6 states have (on average 164.0) internal successors, (984), 6 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:10:00,813 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 03:10:00,813 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 426 [2023-09-01 03:10:00,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 03:10:04,307 INFO L130 PetriNetUnfolder]: 19081/23767 cut-off events. [2023-09-01 03:10:04,307 INFO L131 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2023-09-01 03:10:04,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47606 conditions, 23767 events. 19081/23767 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 2173. Compared 119918 event pairs, 9693 based on Foata normal form. 0/5711 useless extension candidates. Maximal degree in co-relation 47595. Up to 11825 conditions per place. [2023-09-01 03:10:04,440 INFO L137 encePairwiseOnDemand]: 417/426 looper letters, 94 selfloop transitions, 19 changer transitions 0/116 dead transitions. [2023-09-01 03:10:04,440 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 116 transitions, 574 flow [2023-09-01 03:10:04,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 03:10:04,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 03:10:04,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1097 transitions. [2023-09-01 03:10:04,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4291862284820031 [2023-09-01 03:10:04,446 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1097 transitions. [2023-09-01 03:10:04,446 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1097 transitions. [2023-09-01 03:10:04,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 03:10:04,447 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1097 transitions. [2023-09-01 03:10:04,450 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 182.83333333333334) internal successors, (1097), 6 states have internal predecessors, (1097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:10:04,454 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 426.0) internal successors, (2982), 7 states have internal predecessors, (2982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:10:04,455 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 426.0) internal successors, (2982), 7 states have internal predecessors, (2982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:10:04,456 INFO L175 Difference]: Start difference. First operand has 61 places, 56 transitions, 159 flow. Second operand 6 states and 1097 transitions. [2023-09-01 03:10:04,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 116 transitions, 574 flow [2023-09-01 03:10:04,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 116 transitions, 536 flow, removed 12 selfloop flow, removed 3 redundant places. [2023-09-01 03:10:04,462 INFO L231 Difference]: Finished difference. Result has 66 places, 71 transitions, 305 flow [2023-09-01 03:10:04,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=426, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=305, PETRI_PLACES=66, PETRI_TRANSITIONS=71} [2023-09-01 03:10:04,464 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 4 predicate places. [2023-09-01 03:10:04,464 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 71 transitions, 305 flow [2023-09-01 03:10:04,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 164.0) internal successors, (984), 6 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:10:04,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 03:10:04,465 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 03:10:04,479 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 [2023-09-01 03:10:04,673 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 [2023-09-01 03:10:04,673 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2023-09-01 03:10:04,674 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 03:10:04,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1059158904, now seen corresponding path program 1 times [2023-09-01 03:10:04,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 03:10:04,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2129175908] [2023-09-01 03:10:04,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 03:10:04,675 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 [2023-09-01 03:10:04,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 03:10:04,677 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) [2023-09-01 03:10:04,681 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 [2023-09-01 03:10:04,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 03:10:04,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 26 conjunts are in the unsatisfiable core [2023-09-01 03:10:04,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 03:10:04,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 03:10:04,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 03:10:04,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 03:10:04,933 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2023-09-01 03:10:04,933 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 34 [2023-09-01 03:10:04,973 INFO L321 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2023-09-01 03:10:04,974 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 89 [2023-09-01 03:10:05,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 03:10:05,235 INFO L321 Elim1Store]: treesize reduction 32, result has 25.6 percent of original size [2023-09-01 03:10:05,236 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 26 [2023-09-01 03:10:05,346 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 03:10:05,346 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 03:10:05,609 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 03:10:05,610 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 03:10:05,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2129175908] [2023-09-01 03:10:05,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2129175908] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 03:10:05,610 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-09-01 03:10:05,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2023-09-01 03:10:05,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928503961] [2023-09-01 03:10:05,611 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-09-01 03:10:05,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 03:10:05,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 03:10:05,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 03:10:05,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-09-01 03:10:08,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 426 [2023-09-01 03:10:08,078 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 71 transitions, 305 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) [2023-09-01 03:10:08,078 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 03:10:08,078 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 426 [2023-09-01 03:10:08,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 03:10:15,970 INFO L130 PetriNetUnfolder]: 44150/55505 cut-off events. [2023-09-01 03:10:15,970 INFO L131 PetriNetUnfolder]: For 67/67 co-relation queries the response was YES. [2023-09-01 03:10:16,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111233 conditions, 55505 events. 44150/55505 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 4036. Compared 311747 event pairs, 22359 based on Foata normal form. 0/14349 useless extension candidates. Maximal degree in co-relation 111219. Up to 18374 conditions per place. [2023-09-01 03:10:16,286 INFO L137 encePairwiseOnDemand]: 416/426 looper letters, 220 selfloop transitions, 39 changer transitions 0/262 dead transitions. [2023-09-01 03:10:16,286 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 262 transitions, 1397 flow [2023-09-01 03:10:16,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-09-01 03:10:16,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-09-01 03:10:16,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2798 transitions. [2023-09-01 03:10:16,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41050469483568075 [2023-09-01 03:10:16,296 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2798 transitions. [2023-09-01 03:10:16,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2798 transitions. [2023-09-01 03:10:16,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 03:10:16,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2798 transitions. [2023-09-01 03:10:16,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 174.875) internal successors, (2798), 16 states have internal predecessors, (2798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:10:16,316 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 426.0) internal successors, (7242), 17 states have internal predecessors, (7242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:10:16,318 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 426.0) internal successors, (7242), 17 states have internal predecessors, (7242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:10:16,318 INFO L175 Difference]: Start difference. First operand has 66 places, 71 transitions, 305 flow. Second operand 16 states and 2798 transitions. [2023-09-01 03:10:16,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 262 transitions, 1397 flow [2023-09-01 03:10:16,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 262 transitions, 1336 flow, removed 26 selfloop flow, removed 1 redundant places. [2023-09-01 03:10:16,325 INFO L231 Difference]: Finished difference. Result has 81 places, 94 transitions, 545 flow [2023-09-01 03:10:16,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=426, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=545, PETRI_PLACES=81, PETRI_TRANSITIONS=94} [2023-09-01 03:10:16,327 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 19 predicate places. [2023-09-01 03:10:16,327 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 94 transitions, 545 flow [2023-09-01 03:10:16,328 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) [2023-09-01 03:10:16,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 03:10:16,329 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 03:10:16,344 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 [2023-09-01 03:10:16,543 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 [2023-09-01 03:10:16,545 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2023-09-01 03:10:16,545 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 03:10:16,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1059158905, now seen corresponding path program 1 times [2023-09-01 03:10:16,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 03:10:16,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [851629855] [2023-09-01 03:10:16,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 03:10:16,546 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 [2023-09-01 03:10:16,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 03:10:16,547 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) [2023-09-01 03:10:16,549 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 [2023-09-01 03:10:16,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 03:10:16,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 17 conjunts are in the unsatisfiable core [2023-09-01 03:10:16,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 03:10:16,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 03:10:16,764 INFO L321 Elim1Store]: treesize reduction 86, result has 25.9 percent of original size [2023-09-01 03:10:16,765 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 55 [2023-09-01 03:10:17,161 INFO L321 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2023-09-01 03:10:17,162 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 32 [2023-09-01 03:10:17,258 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 03:10:17,258 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 03:10:17,259 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 03:10:17,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [851629855] [2023-09-01 03:10:17,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [851629855] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 03:10:17,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 03:10:17,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 03:10:17,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266224875] [2023-09-01 03:10:17,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 03:10:17,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 03:10:17,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 03:10:17,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 03:10:17,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 03:10:17,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 426 [2023-09-01 03:10:17,445 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 94 transitions, 545 flow. Second operand has 3 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) [2023-09-01 03:10:17,445 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 03:10:17,445 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 426 [2023-09-01 03:10:17,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 03:10:21,138 INFO L130 PetriNetUnfolder]: 31165/39825 cut-off events. [2023-09-01 03:10:21,139 INFO L131 PetriNetUnfolder]: For 90/90 co-relation queries the response was YES. [2023-09-01 03:10:21,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79863 conditions, 39825 events. 31165/39825 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 2597. Compared 226381 event pairs, 15660 based on Foata normal form. 0/11525 useless extension candidates. Maximal degree in co-relation 79846. Up to 39489 conditions per place. [2023-09-01 03:10:21,331 INFO L137 encePairwiseOnDemand]: 423/426 looper letters, 78 selfloop transitions, 1 changer transitions 0/82 dead transitions. [2023-09-01 03:10:21,331 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 82 transitions, 601 flow [2023-09-01 03:10:21,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 03:10:21,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 03:10:21,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 578 transitions. [2023-09-01 03:10:21,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4522691705790297 [2023-09-01 03:10:21,334 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 578 transitions. [2023-09-01 03:10:21,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 578 transitions. [2023-09-01 03:10:21,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 03:10:21,335 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 578 transitions. [2023-09-01 03:10:21,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:10:21,338 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 426.0) internal successors, (1704), 4 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:10:21,338 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 426.0) internal successors, (1704), 4 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:10:21,338 INFO L175 Difference]: Start difference. First operand has 81 places, 94 transitions, 545 flow. Second operand 3 states and 578 transitions. [2023-09-01 03:10:21,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 82 transitions, 601 flow [2023-09-01 03:10:21,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 82 transitions, 569 flow, removed 16 selfloop flow, removed 0 redundant places. [2023-09-01 03:10:21,343 INFO L231 Difference]: Finished difference. Result has 81 places, 82 transitions, 413 flow [2023-09-01 03:10:21,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=426, PETRI_DIFFERENCE_MINUEND_FLOW=411, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=413, PETRI_PLACES=81, PETRI_TRANSITIONS=82} [2023-09-01 03:10:21,344 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 19 predicate places. [2023-09-01 03:10:21,344 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 82 transitions, 413 flow [2023-09-01 03:10:21,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2023-09-01 03:10:21,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 03:10:21,344 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-09-01 03:10:21,359 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 [2023-09-01 03:10:21,556 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 [2023-09-01 03:10:21,557 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2023-09-01 03:10:21,558 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 03:10:21,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1526873788, now seen corresponding path program 2 times [2023-09-01 03:10:21,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 03:10:21,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [946706781] [2023-09-01 03:10:21,559 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 03:10:21,559 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 03:10:21,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 03:10:21,560 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) [2023-09-01 03:10:21,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-09-01 03:10:21,645 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 03:10:21,645 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 03:10:21,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 14 conjunts are in the unsatisfiable core [2023-09-01 03:10:21,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 03:10:21,751 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2023-09-01 03:10:21,751 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 3 case distinctions, treesize of input 17 treesize of output 44 [2023-09-01 03:10:21,892 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 03:10:21,892 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 03:10:22,444 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 03:10:22,444 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 03:10:22,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [946706781] [2023-09-01 03:10:22,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [946706781] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 03:10:22,445 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-09-01 03:10:22,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2023-09-01 03:10:22,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015202888] [2023-09-01 03:10:22,445 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-09-01 03:10:22,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-09-01 03:10:22,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 03:10:22,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-09-01 03:10:22,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-09-01 03:10:25,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 426 [2023-09-01 03:10:25,956 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 82 transitions, 413 flow. Second operand has 12 states, 12 states have (on average 166.0) internal successors, (1992), 12 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:10:25,956 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 03:10:25,956 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 426 [2023-09-01 03:10:25,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 03:10:28,413 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 03:10:29,669 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 03:10:31,416 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 03:10:33,399 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 03:10:35,262 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 03:10:36,515 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 03:10:37,572 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 03:10:39,242 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 03:10:40,267 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 03:10:41,722 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 03:10:55,626 INFO L130 PetriNetUnfolder]: 98447/125845 cut-off events. [2023-09-01 03:10:55,626 INFO L131 PetriNetUnfolder]: For 287/287 co-relation queries the response was YES. [2023-09-01 03:10:55,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252115 conditions, 125845 events. 98447/125845 cut-off events. For 287/287 co-relation queries the response was YES. Maximal size of possible extension queue 5858. Compared 784912 event pairs, 49542 based on Foata normal form. 24/36607 useless extension candidates. Maximal degree in co-relation 252096. Up to 19730 conditions per place. [2023-09-01 03:10:56,308 INFO L137 encePairwiseOnDemand]: 418/426 looper letters, 402 selfloop transitions, 41 changer transitions 0/446 dead transitions. [2023-09-01 03:10:56,309 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 446 transitions, 2325 flow [2023-09-01 03:10:56,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 03:10:56,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 03:10:56,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2407 transitions. [2023-09-01 03:10:56,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4708528951486698 [2023-09-01 03:10:56,316 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2407 transitions. [2023-09-01 03:10:56,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2407 transitions. [2023-09-01 03:10:56,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 03:10:56,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2407 transitions. [2023-09-01 03:10:56,322 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 200.58333333333334) internal successors, (2407), 12 states have internal predecessors, (2407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:10:56,328 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 426.0) internal successors, (5538), 13 states have internal predecessors, (5538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:10:56,330 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 426.0) internal successors, (5538), 13 states have internal predecessors, (5538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:10:56,330 INFO L175 Difference]: Start difference. First operand has 81 places, 82 transitions, 413 flow. Second operand 12 states and 2407 transitions. [2023-09-01 03:10:56,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 446 transitions, 2325 flow [2023-09-01 03:10:56,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 446 transitions, 2324 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 03:10:56,338 INFO L231 Difference]: Finished difference. Result has 98 places, 104 transitions, 755 flow [2023-09-01 03:10:56,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=426, PETRI_DIFFERENCE_MINUEND_FLOW=412, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=755, PETRI_PLACES=98, PETRI_TRANSITIONS=104} [2023-09-01 03:10:56,339 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 36 predicate places. [2023-09-01 03:10:56,339 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 104 transitions, 755 flow [2023-09-01 03:10:56,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 166.0) internal successors, (1992), 12 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:10:56,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 03:10:56,340 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 03:10:56,354 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 [2023-09-01 03:10:56,551 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 [2023-09-01 03:10:56,551 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2023-09-01 03:10:56,551 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 03:10:56,552 INFO L85 PathProgramCache]: Analyzing trace with hash -55512832, now seen corresponding path program 1 times [2023-09-01 03:10:56,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 03:10:56,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [309244451] [2023-09-01 03:10:56,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 03:10:56,552 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 [2023-09-01 03:10:56,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 03:10:56,553 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) [2023-09-01 03:10:56,556 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 [2023-09-01 03:10:56,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 03:10:56,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 26 conjunts are in the unsatisfiable core [2023-09-01 03:10:56,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 03:10:56,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 03:10:56,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 03:10:56,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 03:10:56,773 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2023-09-01 03:10:56,774 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 34 [2023-09-01 03:10:56,784 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 [2023-09-01 03:10:56,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 03:10:56,959 INFO L321 Elim1Store]: treesize reduction 32, result has 25.6 percent of original size [2023-09-01 03:10:56,959 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 26 [2023-09-01 03:10:57,097 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 03:10:57,097 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 03:10:57,311 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 03:10:57,311 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 03:10:57,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [309244451] [2023-09-01 03:10:57,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [309244451] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 03:10:57,312 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-09-01 03:10:57,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2023-09-01 03:10:57,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53640034] [2023-09-01 03:10:57,312 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-09-01 03:10:57,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 03:10:57,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 03:10:57,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 03:10:57,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-09-01 03:10:58,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 426 [2023-09-01 03:10:58,986 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 104 transitions, 755 flow. Second operand has 8 states, 8 states have (on average 160.75) internal successors, (1286), 8 states have internal predecessors, (1286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:10:58,986 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 03:10:58,986 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 426 [2023-09-01 03:10:58,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 03:11:14,722 INFO L130 PetriNetUnfolder]: 94493/120725 cut-off events. [2023-09-01 03:11:14,722 INFO L131 PetriNetUnfolder]: For 357/357 co-relation queries the response was YES. [2023-09-01 03:11:15,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 242022 conditions, 120725 events. 94493/120725 cut-off events. For 357/357 co-relation queries the response was YES. Maximal size of possible extension queue 5615. Compared 746947 event pairs, 47393 based on Foata normal form. 0/35756 useless extension candidates. Maximal degree in co-relation 241995. Up to 56453 conditions per place. [2023-09-01 03:11:15,688 INFO L137 encePairwiseOnDemand]: 415/426 looper letters, 236 selfloop transitions, 41 changer transitions 0/280 dead transitions. [2023-09-01 03:11:15,688 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 280 transitions, 1811 flow [2023-09-01 03:11:15,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-09-01 03:11:15,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-09-01 03:11:15,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2785 transitions. [2023-09-01 03:11:15,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40859741784037557 [2023-09-01 03:11:15,696 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2785 transitions. [2023-09-01 03:11:15,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2785 transitions. [2023-09-01 03:11:15,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 03:11:15,700 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2785 transitions. [2023-09-01 03:11:15,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 174.0625) internal successors, (2785), 16 states have internal predecessors, (2785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:11:15,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 426.0) internal successors, (7242), 17 states have internal predecessors, (7242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:11:15,720 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 426.0) internal successors, (7242), 17 states have internal predecessors, (7242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:11:15,720 INFO L175 Difference]: Start difference. First operand has 98 places, 104 transitions, 755 flow. Second operand 16 states and 2785 transitions. [2023-09-01 03:11:15,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 280 transitions, 1811 flow [2023-09-01 03:11:15,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 280 transitions, 1701 flow, removed 28 selfloop flow, removed 4 redundant places. [2023-09-01 03:11:15,731 INFO L231 Difference]: Finished difference. Result has 114 places, 104 transitions, 796 flow [2023-09-01 03:11:15,732 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=426, PETRI_DIFFERENCE_MINUEND_FLOW=674, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=796, PETRI_PLACES=114, PETRI_TRANSITIONS=104} [2023-09-01 03:11:15,734 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 52 predicate places. [2023-09-01 03:11:15,734 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 104 transitions, 796 flow [2023-09-01 03:11:15,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 160.75) internal successors, (1286), 8 states have internal predecessors, (1286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:11:15,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 03:11:15,735 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 03:11:15,749 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 [2023-09-01 03:11:15,946 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 [2023-09-01 03:11:15,946 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2023-09-01 03:11:15,947 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 03:11:15,947 INFO L85 PathProgramCache]: Analyzing trace with hash -55512831, now seen corresponding path program 1 times [2023-09-01 03:11:15,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 03:11:15,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [769227198] [2023-09-01 03:11:15,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 03:11:15,948 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 [2023-09-01 03:11:15,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 03:11:15,949 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) [2023-09-01 03:11:15,951 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 [2023-09-01 03:11:16,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 03:11:16,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 13 conjunts are in the unsatisfiable core [2023-09-01 03:11:16,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 03:11:16,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 03:11:16,135 INFO L321 Elim1Store]: treesize reduction 79, result has 27.5 percent of original size [2023-09-01 03:11:16,135 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 29 treesize of output 48 [2023-09-01 03:11:16,260 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-09-01 03:11:16,260 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 1 case distinctions, treesize of input 14 treesize of output 20 [2023-09-01 03:11:16,291 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 03:11:16,291 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 03:11:16,291 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 03:11:16,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [769227198] [2023-09-01 03:11:16,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [769227198] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 03:11:16,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 03:11:16,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 03:11:16,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706471664] [2023-09-01 03:11:16,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 03:11:16,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 03:11:16,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 03:11:16,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 03:11:16,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 03:11:16,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 426 [2023-09-01 03:11:16,414 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 104 transitions, 796 flow. Second operand has 3 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) [2023-09-01 03:11:16,414 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 03:11:16,415 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 426 [2023-09-01 03:11:16,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 03:11:28,162 INFO L130 PetriNetUnfolder]: 90496/115323 cut-off events. [2023-09-01 03:11:28,162 INFO L131 PetriNetUnfolder]: For 1612/1612 co-relation queries the response was YES. [2023-09-01 03:11:28,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 231712 conditions, 115323 events. 90496/115323 cut-off events. For 1612/1612 co-relation queries the response was YES. Maximal size of possible extension queue 5590. Compared 711469 event pairs, 45189 based on Foata normal form. 162/34900 useless extension candidates. Maximal degree in co-relation 231678. Up to 114251 conditions per place. [2023-09-01 03:11:29,144 INFO L137 encePairwiseOnDemand]: 423/426 looper letters, 98 selfloop transitions, 1 changer transitions 0/102 dead transitions. [2023-09-01 03:11:29,144 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 102 transitions, 990 flow [2023-09-01 03:11:29,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 03:11:29,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 03:11:29,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 575 transitions. [2023-09-01 03:11:29,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44992175273865415 [2023-09-01 03:11:29,146 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 575 transitions. [2023-09-01 03:11:29,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 575 transitions. [2023-09-01 03:11:29,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 03:11:29,146 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 575 transitions. [2023-09-01 03:11:29,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 191.66666666666666) internal successors, (575), 3 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:11:29,149 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 426.0) internal successors, (1704), 4 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:11:29,161 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 426.0) internal successors, (1704), 4 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:11:29,161 INFO L175 Difference]: Start difference. First operand has 114 places, 104 transitions, 796 flow. Second operand 3 states and 575 transitions. [2023-09-01 03:11:29,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 102 transitions, 990 flow [2023-09-01 03:11:29,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 102 transitions, 925 flow, removed 0 selfloop flow, removed 11 redundant places. [2023-09-01 03:11:29,170 INFO L231 Difference]: Finished difference. Result has 103 places, 102 transitions, 729 flow [2023-09-01 03:11:29,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=426, PETRI_DIFFERENCE_MINUEND_FLOW=727, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=729, PETRI_PLACES=103, PETRI_TRANSITIONS=102} [2023-09-01 03:11:29,171 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 41 predicate places. [2023-09-01 03:11:29,171 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 102 transitions, 729 flow [2023-09-01 03:11:29,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2023-09-01 03:11:29,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 03:11:29,172 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2023-09-01 03:11:29,180 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 [2023-09-01 03:11:29,376 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 [2023-09-01 03:11:29,377 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2023-09-01 03:11:29,377 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 03:11:29,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1553227453, now seen corresponding path program 2 times [2023-09-01 03:11:29,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 03:11:29,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1917809199] [2023-09-01 03:11:29,378 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 03:11:29,378 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 [2023-09-01 03:11:29,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 03:11:29,379 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) [2023-09-01 03:11:29,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-09-01 03:11:29,466 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 03:11:29,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 03:11:29,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 25 conjunts are in the unsatisfiable core [2023-09-01 03:11:29,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 03:11:29,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 03:11:29,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 03:11:29,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 03:11:29,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 03:11:29,545 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2023-09-01 03:11:29,546 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 29 [2023-09-01 03:11:29,571 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2023-09-01 03:11:29,571 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2023-09-01 03:11:29,684 INFO L321 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-09-01 03:11:29,684 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 1 case distinctions, treesize of input 14 treesize of output 20 [2023-09-01 03:11:29,741 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-09-01 03:11:29,742 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 03:11:29,742 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 03:11:29,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1917809199] [2023-09-01 03:11:29,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1917809199] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 03:11:29,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 03:11:29,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 03:11:29,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526614966] [2023-09-01 03:11:29,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 03:11:29,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 03:11:29,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 03:11:29,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 03:11:29,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 03:11:31,950 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-09-01 03:11:32,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 426 [2023-09-01 03:11:32,134 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 102 transitions, 729 flow. Second operand has 4 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) [2023-09-01 03:11:32,134 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 03:11:32,134 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 426 [2023-09-01 03:11:32,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 03:11:43,996 INFO L130 PetriNetUnfolder]: 90495/115313 cut-off events. [2023-09-01 03:11:43,996 INFO L131 PetriNetUnfolder]: For 1468/1468 co-relation queries the response was YES. [2023-09-01 03:11:44,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 231626 conditions, 115313 events. 90495/115313 cut-off events. For 1468/1468 co-relation queries the response was YES. Maximal size of possible extension queue 5463. Compared 709966 event pairs, 45189 based on Foata normal form. 0/34738 useless extension candidates. Maximal degree in co-relation 231592. Up to 114228 conditions per place. [2023-09-01 03:11:44,910 INFO L137 encePairwiseOnDemand]: 423/426 looper letters, 84 selfloop transitions, 11 changer transitions 0/98 dead transitions. [2023-09-01 03:11:44,910 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 98 transitions, 874 flow [2023-09-01 03:11:44,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 03:11:44,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 03:11:44,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 737 transitions. [2023-09-01 03:11:44,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4325117370892019 [2023-09-01 03:11:44,913 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 737 transitions. [2023-09-01 03:11:44,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 737 transitions. [2023-09-01 03:11:44,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 03:11:44,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 737 transitions. [2023-09-01 03:11:44,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 184.25) internal successors, (737), 4 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:11:44,916 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 426.0) internal successors, (2130), 5 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:11:44,916 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 426.0) internal successors, (2130), 5 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:11:44,916 INFO L175 Difference]: Start difference. First operand has 103 places, 102 transitions, 729 flow. Second operand 4 states and 737 transitions. [2023-09-01 03:11:44,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 98 transitions, 874 flow [2023-09-01 03:11:44,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 98 transitions, 873 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 03:11:44,926 INFO L231 Difference]: Finished difference. Result has 103 places, 98 transitions, 705 flow [2023-09-01 03:11:44,926 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=426, PETRI_DIFFERENCE_MINUEND_FLOW=683, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=705, PETRI_PLACES=103, PETRI_TRANSITIONS=98} [2023-09-01 03:11:44,927 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 41 predicate places. [2023-09-01 03:11:44,927 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 98 transitions, 705 flow [2023-09-01 03:11:44,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 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) [2023-09-01 03:11:44,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 03:11:44,927 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 03:11:44,937 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 [2023-09-01 03:11:45,137 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 [2023-09-01 03:11:45,137 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2023-09-01 03:11:45,139 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 03:11:45,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1720903423, now seen corresponding path program 1 times [2023-09-01 03:11:45,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 03:11:45,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [753323497] [2023-09-01 03:11:45,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 03:11:45,140 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 [2023-09-01 03:11:45,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 03:11:45,141 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) [2023-09-01 03:11:45,142 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 [2023-09-01 03:11:45,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 03:11:45,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 9 conjunts are in the unsatisfiable core [2023-09-01 03:11:45,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 03:11:45,500 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 03:11:45,500 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 03:11:45,616 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 25 treesize of output 21 [2023-09-01 03:11:45,666 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 03:11:45,666 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 03:11:45,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [753323497] [2023-09-01 03:11:45,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [753323497] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 03:11:45,666 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-09-01 03:11:45,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-09-01 03:11:45,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788838091] [2023-09-01 03:11:45,666 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-09-01 03:11:45,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 03:11:45,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 03:11:45,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 03:11:45,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-09-01 03:11:47,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 426 [2023-09-01 03:11:47,290 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 98 transitions, 705 flow. Second operand has 10 states, 10 states have (on average 166.4) internal successors, (1664), 10 states have internal predecessors, (1664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:11:47,290 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 03:11:47,290 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 426 [2023-09-01 03:11:47,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 03:12:05,973 INFO L130 PetriNetUnfolder]: 139152/182523 cut-off events. [2023-09-01 03:12:05,973 INFO L131 PetriNetUnfolder]: For 3582/3582 co-relation queries the response was YES. [2023-09-01 03:12:06,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 367496 conditions, 182523 events. 139152/182523 cut-off events. For 3582/3582 co-relation queries the response was YES. Maximal size of possible extension queue 9237. Compared 1258397 event pairs, 43222 based on Foata normal form. 0/61012 useless extension candidates. Maximal degree in co-relation 367461. Up to 84563 conditions per place. [2023-09-01 03:12:07,499 INFO L137 encePairwiseOnDemand]: 418/426 looper letters, 170 selfloop transitions, 38 changer transitions 0/210 dead transitions. [2023-09-01 03:12:07,500 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 210 transitions, 1419 flow [2023-09-01 03:12:07,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 03:12:07,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 03:12:07,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1646 transitions. [2023-09-01 03:12:07,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42931664058424623 [2023-09-01 03:12:07,503 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1646 transitions. [2023-09-01 03:12:07,503 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1646 transitions. [2023-09-01 03:12:07,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 03:12:07,504 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1646 transitions. [2023-09-01 03:12:07,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 182.88888888888889) internal successors, (1646), 9 states have internal predecessors, (1646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:12:07,508 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 426.0) internal successors, (4260), 10 states have internal predecessors, (4260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:12:07,509 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 426.0) internal successors, (4260), 10 states have internal predecessors, (4260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:12:07,509 INFO L175 Difference]: Start difference. First operand has 103 places, 98 transitions, 705 flow. Second operand 9 states and 1646 transitions. [2023-09-01 03:12:07,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 210 transitions, 1419 flow [2023-09-01 03:12:07,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 210 transitions, 1407 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 03:12:07,519 INFO L231 Difference]: Finished difference. Result has 111 places, 102 transitions, 799 flow [2023-09-01 03:12:07,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=426, PETRI_DIFFERENCE_MINUEND_FLOW=693, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=799, PETRI_PLACES=111, PETRI_TRANSITIONS=102} [2023-09-01 03:12:07,520 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 49 predicate places. [2023-09-01 03:12:07,520 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 102 transitions, 799 flow [2023-09-01 03:12:07,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 166.4) internal successors, (1664), 10 states have internal predecessors, (1664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:12:07,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 03:12:07,521 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 03:12:07,534 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-09-01 03:12:07,730 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 [2023-09-01 03:12:07,730 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2023-09-01 03:12:07,731 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 03:12:07,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1720903424, now seen corresponding path program 1 times [2023-09-01 03:12:07,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 03:12:07,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2094158029] [2023-09-01 03:12:07,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 03:12:07,731 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 [2023-09-01 03:12:07,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 03:12:07,733 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) [2023-09-01 03:12:07,736 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 [2023-09-01 03:12:07,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 03:12:07,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 03:12:07,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 03:12:07,834 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-09-01 03:12:07,847 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 03:12:07,847 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 03:12:07,847 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 03:12:07,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2094158029] [2023-09-01 03:12:07,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2094158029] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 03:12:07,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 03:12:07,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 03:12:07,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899059698] [2023-09-01 03:12:07,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 03:12:07,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 03:12:07,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 03:12:07,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 03:12:07,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 03:12:08,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 426 [2023-09-01 03:12:08,003 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 102 transitions, 799 flow. Second operand has 4 states, 4 states have (on average 172.75) internal successors, (691), 4 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:12:08,003 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 03:12:08,003 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 426 [2023-09-01 03:12:08,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 03:12:19,569 INFO L130 PetriNetUnfolder]: 79225/106232 cut-off events. [2023-09-01 03:12:19,570 INFO L131 PetriNetUnfolder]: For 15576/17847 co-relation queries the response was YES. [2023-09-01 03:12:20,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227782 conditions, 106232 events. 79225/106232 cut-off events. For 15576/17847 co-relation queries the response was YES. Maximal size of possible extension queue 5297. Compared 742599 event pairs, 47883 based on Foata normal form. 2271/45614 useless extension candidates. Maximal degree in co-relation 227745. Up to 105021 conditions per place. [2023-09-01 03:12:20,513 INFO L137 encePairwiseOnDemand]: 421/426 looper letters, 79 selfloop transitions, 16 changer transitions 0/99 dead transitions. [2023-09-01 03:12:20,513 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 99 transitions, 983 flow [2023-09-01 03:12:20,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 03:12:20,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 03:12:20,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 728 transitions. [2023-09-01 03:12:20,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4272300469483568 [2023-09-01 03:12:20,515 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 728 transitions. [2023-09-01 03:12:20,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 728 transitions. [2023-09-01 03:12:20,516 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 03:12:20,516 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 728 transitions. [2023-09-01 03:12:20,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:12:20,518 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 426.0) internal successors, (2130), 5 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:12:20,518 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 426.0) internal successors, (2130), 5 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:12:20,518 INFO L175 Difference]: Start difference. First operand has 111 places, 102 transitions, 799 flow. Second operand 4 states and 728 transitions. [2023-09-01 03:12:20,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 99 transitions, 983 flow [2023-09-01 03:12:20,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 99 transitions, 931 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-09-01 03:12:20,552 INFO L231 Difference]: Finished difference. Result has 107 places, 99 transitions, 773 flow [2023-09-01 03:12:20,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=426, PETRI_DIFFERENCE_MINUEND_FLOW=741, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=773, PETRI_PLACES=107, PETRI_TRANSITIONS=99} [2023-09-01 03:12:20,553 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 45 predicate places. [2023-09-01 03:12:20,553 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 99 transitions, 773 flow [2023-09-01 03:12:20,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 172.75) internal successors, (691), 4 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:12:20,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 03:12:20,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 03:12:20,567 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 [2023-09-01 03:12:20,764 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 [2023-09-01 03:12:20,764 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2023-09-01 03:12:20,764 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 03:12:20,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1720903425, now seen corresponding path program 1 times [2023-09-01 03:12:20,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 03:12:20,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [349528176] [2023-09-01 03:12:20,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 03:12:20,765 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 [2023-09-01 03:12:20,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 03:12:20,766 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) [2023-09-01 03:12:20,767 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 [2023-09-01 03:12:20,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 03:12:20,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 18 conjunts are in the unsatisfiable core [2023-09-01 03:12:20,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 03:12:20,970 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2023-09-01 03:12:20,971 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 3 case distinctions, treesize of input 17 treesize of output 44 [2023-09-01 03:12:21,053 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2023-09-01 03:12:21,054 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 3 case distinctions, treesize of input 15 treesize of output 50 [2023-09-01 03:12:21,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 03:12:21,145 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-09-01 03:12:21,152 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-09-01 03:12:21,152 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-09-01 03:12:21,238 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 03:12:21,239 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 03:12:23,586 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 03:12:23,586 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 03:12:23,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [349528176] [2023-09-01 03:12:23,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [349528176] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 03:12:23,587 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-09-01 03:12:23,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2023-09-01 03:12:23,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077534433] [2023-09-01 03:12:23,587 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-09-01 03:12:23,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 03:12:23,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 03:12:23,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 03:12:23,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-09-01 03:12:27,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 426 [2023-09-01 03:12:27,612 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 99 transitions, 773 flow. Second operand has 10 states, 10 states have (on average 154.6) internal successors, (1546), 10 states have internal predecessors, (1546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 03:12:27,612 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 03:12:27,613 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 426 [2023-09-01 03:12:27,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 03:12:52,707 INFO L130 PetriNetUnfolder]: 119876/159209 cut-off events. [2023-09-01 03:12:52,707 INFO L131 PetriNetUnfolder]: For 23405/23405 co-relation queries the response was YES. [2023-09-01 03:12:53,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 343821 conditions, 159209 events. 119876/159209 cut-off events. For 23405/23405 co-relation queries the response was YES. Maximal size of possible extension queue 7457. Compared 1118877 event pairs, 45904 based on Foata normal form. 0/67341 useless extension candidates. Maximal degree in co-relation 343785. Up to 33349 conditions per place.