./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/goblint-regression/09-regions_21-arrayloop2_nr.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/goblint-regression/09-regions_21-arrayloop2_nr.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 52746884466210ec366bc04a3a6cb03f413619353c73143d79c1024e676e598e --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 21:20:16,865 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 21:20:16,866 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 21:20:16,899 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 21:20:16,901 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 21:20:16,904 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 21:20:16,905 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 21:20:16,908 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 21:20:16,910 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 21:20:16,913 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 21:20:16,914 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 21:20:16,915 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 21:20:16,916 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 21:20:16,917 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 21:20:16,918 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 21:20:16,924 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 21:20:16,925 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 21:20:16,928 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 21:20:16,929 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 21:20:16,932 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 21:20:16,933 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 21:20:16,934 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 21:20:16,934 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 21:20:16,935 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 21:20:16,940 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 21:20:16,940 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 21:20:16,940 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 21:20:16,942 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 21:20:16,942 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 21:20:16,943 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 21:20:16,943 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 21:20:16,947 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 21:20:16,949 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 21:20:16,949 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 21:20:16,950 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 21:20:16,950 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 21:20:16,951 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 21:20:16,951 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 21:20:16,951 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 21:20:16,955 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 21:20:16,956 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 21:20:16,957 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-29 21:20:16,981 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 21:20:16,981 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 21:20:16,982 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 21:20:16,982 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 21:20:16,983 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 21:20:16,983 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 21:20:16,983 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 21:20:16,983 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 21:20:16,983 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 21:20:16,983 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 21:20:16,984 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 21:20:16,984 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 21:20:16,984 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 21:20:16,984 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 21:20:16,985 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 21:20:16,985 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-29 21:20:16,985 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-29 21:20:16,985 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-29 21:20:16,985 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 21:20:16,985 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-29 21:20:16,985 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 21:20:16,985 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 21:20:16,986 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 21:20:16,986 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 21:20:16,986 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 21:20:16,986 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 21:20:16,986 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 21:20:16,986 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 21:20:16,986 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 21:20:16,987 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 21:20:16,987 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 21:20:16,987 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 21:20:16,987 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 21:20:16,987 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 21:20:16,987 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 52746884466210ec366bc04a3a6cb03f413619353c73143d79c1024e676e598e Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 21:20:17,215 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 21:20:17,228 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 21:20:17,231 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 21:20:17,231 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 21:20:17,231 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 21:20:17,232 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/09-regions_21-arrayloop2_nr.i [2023-08-29 21:20:18,256 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 21:20:18,474 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 21:20:18,475 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/09-regions_21-arrayloop2_nr.i [2023-08-29 21:20:18,502 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59e5d6c5e/238b1c8be0aa4e97ac5ac3de6fc0289b/FLAGbd7b6443a [2023-08-29 21:20:18,515 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59e5d6c5e/238b1c8be0aa4e97ac5ac3de6fc0289b [2023-08-29 21:20:18,517 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 21:20:18,518 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 21:20:18,520 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 21:20:18,520 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 21:20:18,522 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 21:20:18,522 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 09:20:18" (1/1) ... [2023-08-29 21:20:18,523 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7004915d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:20:18, skipping insertion in model container [2023-08-29 21:20:18,523 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 09:20:18" (1/1) ... [2023-08-29 21:20:18,527 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 21:20:18,564 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 21:20:18,790 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-29 21:20:18,790 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-29 21:20:18,791 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-29 21:20:18,791 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-29 21:20:18,802 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 21:20:18,818 ERROR L324 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-08-29 21:20:18,818 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@785e2e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:20:18, skipping insertion in model container [2023-08-29 21:20:18,818 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 21:20:18,819 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-08-29 21:20:18,820 INFO L158 Benchmark]: Toolchain (without parser) took 301.24ms. Allocated memory is still 60.8MB. Free memory was 41.5MB in the beginning and 39.7MB in the end (delta: 1.9MB). Peak memory consumption was 16.6MB. Max. memory is 16.1GB. [2023-08-29 21:20:18,820 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 50.3MB. Free memory was 28.7MB in the beginning and 28.7MB in the end (delta: 52.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 21:20:18,821 INFO L158 Benchmark]: CACSL2BoogieTranslator took 298.97ms. Allocated memory is still 60.8MB. Free memory was 41.4MB in the beginning and 39.7MB in the end (delta: 1.7MB). Peak memory consumption was 16.6MB. Max. memory is 16.1GB. [2023-08-29 21:20:18,822 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 50.3MB. Free memory was 28.7MB in the beginning and 28.7MB in the end (delta: 52.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 298.97ms. Allocated memory is still 60.8MB. Free memory was 41.4MB in the beginning and 39.7MB in the end (delta: 1.7MB). Peak memory consumption was 16.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1031]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/goblint-regression/09-regions_21-arrayloop2_nr.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 52746884466210ec366bc04a3a6cb03f413619353c73143d79c1024e676e598e --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 21:20:20,163 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 21:20:20,164 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 21:20:20,197 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 21:20:20,198 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 21:20:20,200 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 21:20:20,202 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 21:20:20,204 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 21:20:20,205 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 21:20:20,208 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 21:20:20,209 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 21:20:20,211 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 21:20:20,211 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 21:20:20,212 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 21:20:20,213 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 21:20:20,215 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 21:20:20,216 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 21:20:20,218 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 21:20:20,221 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 21:20:20,225 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 21:20:20,226 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 21:20:20,226 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 21:20:20,227 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 21:20:20,228 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 21:20:20,232 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 21:20:20,233 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 21:20:20,233 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 21:20:20,234 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 21:20:20,234 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 21:20:20,235 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 21:20:20,235 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 21:20:20,236 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 21:20:20,237 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 21:20:20,238 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 21:20:20,238 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 21:20:20,238 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 21:20:20,239 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 21:20:20,239 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 21:20:20,239 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 21:20:20,240 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 21:20:20,240 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 21:20:20,242 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-08-29 21:20:20,266 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 21:20:20,267 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 21:20:20,268 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 21:20:20,268 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 21:20:20,268 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 21:20:20,269 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 21:20:20,269 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 21:20:20,269 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 21:20:20,269 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 21:20:20,270 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 21:20:20,270 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 21:20:20,270 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 21:20:20,271 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 21:20:20,271 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 21:20:20,271 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 21:20:20,271 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-29 21:20:20,271 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-29 21:20:20,271 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-29 21:20:20,272 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 21:20:20,272 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-29 21:20:20,272 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-08-29 21:20:20,272 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-08-29 21:20:20,272 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 21:20:20,272 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 21:20:20,273 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 21:20:20,273 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 21:20:20,273 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 21:20:20,273 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 21:20:20,273 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 21:20:20,273 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 21:20:20,274 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-08-29 21:20:20,274 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-08-29 21:20:20,274 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 21:20:20,274 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 21:20:20,274 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 21:20:20,274 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-08-29 21:20:20,275 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 21:20:20,275 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 52746884466210ec366bc04a3a6cb03f413619353c73143d79c1024e676e598e Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 21:20:20,508 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 21:20:20,524 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 21:20:20,526 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 21:20:20,527 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 21:20:20,527 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 21:20:20,528 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/09-regions_21-arrayloop2_nr.i [2023-08-29 21:20:21,507 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 21:20:21,758 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 21:20:21,758 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/09-regions_21-arrayloop2_nr.i [2023-08-29 21:20:21,773 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52cef0081/d4656a6218bf45e39baba73011fb3aef/FLAG7ebed1f6c [2023-08-29 21:20:21,782 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52cef0081/d4656a6218bf45e39baba73011fb3aef [2023-08-29 21:20:21,784 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 21:20:21,785 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 21:20:21,786 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 21:20:21,786 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 21:20:21,788 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 21:20:21,788 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 09:20:21" (1/1) ... [2023-08-29 21:20:21,789 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f39dfbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:20:21, skipping insertion in model container [2023-08-29 21:20:21,790 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 09:20:21" (1/1) ... [2023-08-29 21:20:21,794 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 21:20:21,838 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 21:20:22,178 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-29 21:20:22,179 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-29 21:20:22,179 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-29 21:20:22,180 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-29 21:20:22,208 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 21:20:22,228 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-08-29 21:20:22,244 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 21:20:22,271 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-29 21:20:22,272 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-29 21:20:22,272 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-29 21:20:22,272 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-29 21:20:22,284 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 21:20:22,293 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 21:20:22,314 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-29 21:20:22,314 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-29 21:20:22,314 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-29 21:20:22,315 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-29 21:20:22,319 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 21:20:22,373 INFO L208 MainTranslator]: Completed translation [2023-08-29 21:20:22,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:20:22 WrapperNode [2023-08-29 21:20:22,373 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 21:20:22,374 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 21:20:22,374 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 21:20:22,375 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 21:20:22,379 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:20:22" (1/1) ... [2023-08-29 21:20:22,408 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:20:22" (1/1) ... [2023-08-29 21:20:22,431 INFO L138 Inliner]: procedures = 274, calls = 32, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 118 [2023-08-29 21:20:22,431 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 21:20:22,433 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 21:20:22,434 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 21:20:22,434 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 21:20:22,439 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:20:22" (1/1) ... [2023-08-29 21:20:22,440 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:20:22" (1/1) ... [2023-08-29 21:20:22,453 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:20:22" (1/1) ... [2023-08-29 21:20:22,454 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:20:22" (1/1) ... [2023-08-29 21:20:22,464 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:20:22" (1/1) ... [2023-08-29 21:20:22,473 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:20:22" (1/1) ... [2023-08-29 21:20:22,475 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:20:22" (1/1) ... [2023-08-29 21:20:22,481 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:20:22" (1/1) ... [2023-08-29 21:20:22,484 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 21:20:22,485 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 21:20:22,485 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 21:20:22,485 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 21:20:22,498 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:20:22" (1/1) ... [2023-08-29 21:20:22,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 21:20:22,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 21:20:22,519 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-29 21:20:22,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-29 21:20:22,547 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-08-29 21:20:22,548 INFO L130 BoogieDeclarations]: Found specification of procedure f [2023-08-29 21:20:22,548 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2023-08-29 21:20:22,548 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 21:20:22,548 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-29 21:20:22,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 21:20:22,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-08-29 21:20:22,548 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-29 21:20:22,548 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-29 21:20:22,549 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 21:20:22,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-29 21:20:22,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 21:20:22,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 21:20:22,550 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-29 21:20:22,656 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 21:20:22,657 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 21:20:23,062 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 21:20:23,066 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 21:20:23,067 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-29 21:20:23,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 09:20:23 BoogieIcfgContainer [2023-08-29 21:20:23,068 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 21:20:23,069 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 21:20:23,069 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 21:20:23,071 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 21:20:23,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 09:20:21" (1/3) ... [2023-08-29 21:20:23,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cb28c98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 09:20:23, skipping insertion in model container [2023-08-29 21:20:23,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:20:22" (2/3) ... [2023-08-29 21:20:23,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cb28c98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 09:20:23, skipping insertion in model container [2023-08-29 21:20:23,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 09:20:23" (3/3) ... [2023-08-29 21:20:23,073 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_21-arrayloop2_nr.i [2023-08-29 21:20:23,084 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 21:20:23,084 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 33 error locations. [2023-08-29 21:20:23,084 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 21:20:23,157 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 21:20:23,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 197 places, 204 transitions, 418 flow [2023-08-29 21:20:23,222 INFO L130 PetriNetUnfolder]: 14/202 cut-off events. [2023-08-29 21:20:23,222 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 21:20:23,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 209 conditions, 202 events. 14/202 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 634 event pairs, 0 based on Foata normal form. 0/147 useless extension candidates. Maximal degree in co-relation 143. Up to 2 conditions per place. [2023-08-29 21:20:23,226 INFO L82 GeneralOperation]: Start removeDead. Operand has 197 places, 204 transitions, 418 flow [2023-08-29 21:20:23,230 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 195 places, 202 transitions, 410 flow [2023-08-29 21:20:23,232 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 21:20:23,239 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 195 places, 202 transitions, 410 flow [2023-08-29 21:20:23,243 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 195 places, 202 transitions, 410 flow [2023-08-29 21:20:23,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 195 places, 202 transitions, 410 flow [2023-08-29 21:20:23,264 INFO L130 PetriNetUnfolder]: 14/202 cut-off events. [2023-08-29 21:20:23,265 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 21:20:23,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 209 conditions, 202 events. 14/202 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 638 event pairs, 0 based on Foata normal form. 0/147 useless extension candidates. Maximal degree in co-relation 143. Up to 2 conditions per place. [2023-08-29 21:20:23,268 INFO L119 LiptonReduction]: Number of co-enabled transitions 7680 [2023-08-29 21:23:54,192 WARN L222 SmtUtils]: Spent 2.05m on a formula simplification. DAG size of input: 224 DAG size of output: 216 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 21:24:46,622 WARN L222 SmtUtils]: Spent 52.43s on a formula simplification that was a NOOP. DAG size: 212 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 21:26:48,609 WARN L222 SmtUtils]: Spent 2.03m on a formula simplification. DAG size of input: 224 DAG size of output: 216 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 21:27:46,321 WARN L222 SmtUtils]: Spent 57.71s on a formula simplification that was a NOOP. DAG size: 212 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 21:28:11,724 WARN L222 SmtUtils]: Spent 5.07s on a formula simplification that was a NOOP. DAG size: 165 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 21:28:51,642 INFO L134 LiptonReduction]: Checked pairs total: 13073 [2023-08-29 21:28:51,642 INFO L136 LiptonReduction]: Total number of compositions: 259 [2023-08-29 21:28:51,651 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 21:28:51,654 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;@20a5262f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 21:28:51,654 INFO L358 AbstractCegarLoop]: Starting to check reachability of 51 error locations. [2023-08-29 21:28:51,655 INFO L130 PetriNetUnfolder]: 0/2 cut-off events. [2023-08-29 21:28:51,656 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 21:28:51,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:28:51,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-29 21:28:51,656 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-08-29 21:28:51,659 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:28:51,659 INFO L85 PathProgramCache]: Analyzing trace with hash 23001, now seen corresponding path program 1 times [2023-08-29 21:28:51,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:28:51,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1090858416] [2023-08-29 21:28:51,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:28:51,667 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:28:51,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:28:51,669 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:28:51,670 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-08-29 21:28:51,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:28:51,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-29 21:28:51,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:28:51,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:28:51,765 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:28:51,766 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:28:51,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1090858416] [2023-08-29 21:28:51,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1090858416] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:28:51,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:28:51,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 21:28:51,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32459136] [2023-08-29 21:28:51,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:28:51,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:28:51,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:28:51,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:28:51,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:28:51,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 463 [2023-08-29 21:28:51,829 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 67 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 190.66666666666666) internal successors, (572), 3 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:28:51,830 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:28:51,830 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 463 [2023-08-29 21:28:51,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:28:53,723 INFO L130 PetriNetUnfolder]: 1548/2409 cut-off events. [2023-08-29 21:28:53,724 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2023-08-29 21:28:53,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4852 conditions, 2409 events. 1548/2409 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 11327 event pairs, 1313 based on Foata normal form. 0/1122 useless extension candidates. Maximal degree in co-relation 4796. Up to 2400 conditions per place. [2023-08-29 21:28:53,738 INFO L137 encePairwiseOnDemand]: 443/463 looper letters, 60 selfloop transitions, 2 changer transitions 0/62 dead transitions. [2023-08-29 21:28:53,739 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 62 transitions, 254 flow [2023-08-29 21:28:53,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:28:53,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:28:53,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 663 transitions. [2023-08-29 21:28:53,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4773218142548596 [2023-08-29 21:28:53,756 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 663 transitions. [2023-08-29 21:28:53,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 663 transitions. [2023-08-29 21:28:53,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:28:53,769 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 663 transitions. [2023-08-29 21:28:53,773 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 221.0) internal successors, (663), 3 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:28:53,779 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:28:53,783 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:28:53,784 INFO L175 Difference]: Start difference. First operand has 68 places, 67 transitions, 140 flow. Second operand 3 states and 663 transitions. [2023-08-29 21:28:53,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 62 transitions, 254 flow [2023-08-29 21:28:53,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 62 transitions, 252 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 21:28:53,788 INFO L231 Difference]: Finished difference. Result has 54 places, 53 transitions, 124 flow [2023-08-29 21:28:53,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=54, PETRI_TRANSITIONS=53} [2023-08-29 21:28:53,794 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -14 predicate places. [2023-08-29 21:28:53,795 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 53 transitions, 124 flow [2023-08-29 21:28:53,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 190.66666666666666) internal successors, (572), 3 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:28:53,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:28:53,796 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-29 21:28:53,807 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-08-29 21:28:54,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:28:54,008 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-08-29 21:28:54,008 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:28:54,008 INFO L85 PathProgramCache]: Analyzing trace with hash 23029, now seen corresponding path program 1 times [2023-08-29 21:28:54,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:28:54,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1580901893] [2023-08-29 21:28:54,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:28:54,009 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:28:54,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:28:54,011 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:28:54,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-08-29 21:28:54,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:28:54,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-29 21:28:54,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:28:54,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:28:54,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:28:54,118 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2023-08-29 21:28:54,119 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 31 [2023-08-29 21:28:54,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:28:54,146 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:28:54,146 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:28:54,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1580901893] [2023-08-29 21:28:54,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1580901893] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:28:54,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:28:54,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 21:28:54,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384033650] [2023-08-29 21:28:54,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:28:54,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:28:54,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:28:54,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:28:54,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:28:54,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 463 [2023-08-29 21:28:54,444 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 53 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 190.66666666666666) internal successors, (572), 3 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:28:54,444 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:28:54,444 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 463 [2023-08-29 21:28:54,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:28:55,402 INFO L130 PetriNetUnfolder]: 1488/2314 cut-off events. [2023-08-29 21:28:55,402 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 21:28:55,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4667 conditions, 2314 events. 1488/2314 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 11902 event pairs, 249 based on Foata normal form. 0/1084 useless extension candidates. Maximal degree in co-relation 4642. Up to 1822 conditions per place. [2023-08-29 21:28:55,409 INFO L137 encePairwiseOnDemand]: 457/463 looper letters, 77 selfloop transitions, 2 changer transitions 0/79 dead transitions. [2023-08-29 21:28:55,409 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 79 transitions, 334 flow [2023-08-29 21:28:55,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:28:55,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:28:55,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 652 transitions. [2023-08-29 21:28:55,412 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46940244780417567 [2023-08-29 21:28:55,412 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 652 transitions. [2023-08-29 21:28:55,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 652 transitions. [2023-08-29 21:28:55,412 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:28:55,412 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 652 transitions. [2023-08-29 21:28:55,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 217.33333333333334) internal successors, (652), 3 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:28:55,415 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:28:55,416 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:28:55,416 INFO L175 Difference]: Start difference. First operand has 54 places, 53 transitions, 124 flow. Second operand 3 states and 652 transitions. [2023-08-29 21:28:55,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 79 transitions, 334 flow [2023-08-29 21:28:55,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 79 transitions, 332 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 21:28:55,418 INFO L231 Difference]: Finished difference. Result has 54 places, 51 transitions, 128 flow [2023-08-29 21:28:55,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=54, PETRI_TRANSITIONS=51} [2023-08-29 21:28:55,418 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -14 predicate places. [2023-08-29 21:28:55,418 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 51 transitions, 128 flow [2023-08-29 21:28:55,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 190.66666666666666) internal successors, (572), 3 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:28:55,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:28:55,419 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-29 21:28:55,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-08-29 21:28:55,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:28:55,626 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-08-29 21:28:55,626 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:28:55,629 INFO L85 PathProgramCache]: Analyzing trace with hash 23030, now seen corresponding path program 1 times [2023-08-29 21:28:55,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:28:55,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [382061359] [2023-08-29 21:28:55,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:28:55,630 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:28:55,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:28:55,631 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:28:55,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-08-29 21:28:55,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:28:55,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-29 21:28:55,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:28:55,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:28:55,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:28:55,752 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-29 21:28:55,752 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 23 [2023-08-29 21:28:55,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:28:55,784 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:28:55,785 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:28:55,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [382061359] [2023-08-29 21:28:55,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [382061359] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:28:55,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:28:55,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 21:28:55,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137401820] [2023-08-29 21:28:55,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:28:55,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:28:55,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:28:55,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:28:55,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:28:56,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 463 [2023-08-29 21:28:56,055 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 51 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 188.66666666666666) internal successors, (566), 3 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:28:56,055 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:28:56,055 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 463 [2023-08-29 21:28:56,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:28:57,222 INFO L130 PetriNetUnfolder]: 1491/2316 cut-off events. [2023-08-29 21:28:57,222 INFO L131 PetriNetUnfolder]: For 231/231 co-relation queries the response was YES. [2023-08-29 21:28:57,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5095 conditions, 2316 events. 1491/2316 cut-off events. For 231/231 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 10877 event pairs, 1257 based on Foata normal form. 0/1170 useless extension candidates. Maximal degree in co-relation 5038. Up to 2315 conditions per place. [2023-08-29 21:28:57,229 INFO L137 encePairwiseOnDemand]: 455/463 looper letters, 51 selfloop transitions, 5 changer transitions 0/56 dead transitions. [2023-08-29 21:28:57,230 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 56 transitions, 252 flow [2023-08-29 21:28:57,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:28:57,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:28:57,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 622 transitions. [2023-08-29 21:28:57,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4478041756659467 [2023-08-29 21:28:57,247 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 622 transitions. [2023-08-29 21:28:57,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 622 transitions. [2023-08-29 21:28:57,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:28:57,260 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 622 transitions. [2023-08-29 21:28:57,262 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 207.33333333333334) internal successors, (622), 3 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:28:57,265 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:28:57,266 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:28:57,267 INFO L175 Difference]: Start difference. First operand has 54 places, 51 transitions, 128 flow. Second operand 3 states and 622 transitions. [2023-08-29 21:28:57,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 56 transitions, 252 flow [2023-08-29 21:28:57,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 56 transitions, 248 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 21:28:57,271 INFO L231 Difference]: Finished difference. Result has 55 places, 55 transitions, 163 flow [2023-08-29 21:28:57,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=163, PETRI_PLACES=55, PETRI_TRANSITIONS=55} [2023-08-29 21:28:57,272 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -13 predicate places. [2023-08-29 21:28:57,272 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 55 transitions, 163 flow [2023-08-29 21:28:57,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 188.66666666666666) internal successors, (566), 3 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:28:57,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:28:57,275 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 21:28:57,307 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-08-29 21:28:57,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:28:57,476 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-08-29 21:28:57,476 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:28:57,476 INFO L85 PathProgramCache]: Analyzing trace with hash 715196, now seen corresponding path program 1 times [2023-08-29 21:28:57,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:28:57,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1515639327] [2023-08-29 21:28:57,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:28:57,477 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:28:57,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:28:57,478 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:28:57,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-08-29 21:28:57,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:28:57,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-29 21:28:57,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:28:57,627 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 21 [2023-08-29 21:28:57,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:28:57,654 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:28:57,654 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:28:57,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1515639327] [2023-08-29 21:28:57,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1515639327] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:28:57,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:28:57,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 21:28:57,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381435213] [2023-08-29 21:28:57,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:28:57,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 21:28:57,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:28:57,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 21:28:57,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-29 21:28:57,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 463 [2023-08-29 21:28:57,993 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 55 transitions, 163 flow. Second operand has 4 states, 4 states have (on average 176.75) internal successors, (707), 4 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:28:57,993 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:28:57,993 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 463 [2023-08-29 21:28:57,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:29:00,014 INFO L130 PetriNetUnfolder]: 1490/2319 cut-off events. [2023-08-29 21:29:00,015 INFO L131 PetriNetUnfolder]: For 51/51 co-relation queries the response was YES. [2023-08-29 21:29:00,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4954 conditions, 2319 events. 1490/2319 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 10871 event pairs, 1257 based on Foata normal form. 0/1173 useless extension candidates. Maximal degree in co-relation 4913. Up to 2313 conditions per place. [2023-08-29 21:29:00,022 INFO L137 encePairwiseOnDemand]: 457/463 looper letters, 51 selfloop transitions, 7 changer transitions 0/58 dead transitions. [2023-08-29 21:29:00,022 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 58 transitions, 290 flow [2023-08-29 21:29:00,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 21:29:00,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 21:29:00,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 759 transitions. [2023-08-29 21:29:00,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40982721382289417 [2023-08-29 21:29:00,025 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 759 transitions. [2023-08-29 21:29:00,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 759 transitions. [2023-08-29 21:29:00,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:29:00,026 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 759 transitions. [2023-08-29 21:29:00,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 189.75) internal successors, (759), 4 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:29:00,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 463.0) internal successors, (2315), 5 states have internal predecessors, (2315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:29:00,030 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 463.0) internal successors, (2315), 5 states have internal predecessors, (2315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:29:00,030 INFO L175 Difference]: Start difference. First operand has 55 places, 55 transitions, 163 flow. Second operand 4 states and 759 transitions. [2023-08-29 21:29:00,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 58 transitions, 290 flow [2023-08-29 21:29:00,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 58 transitions, 286 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 21:29:00,033 INFO L231 Difference]: Finished difference. Result has 58 places, 56 transitions, 188 flow [2023-08-29 21:29:00,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=188, PETRI_PLACES=58, PETRI_TRANSITIONS=56} [2023-08-29 21:29:00,034 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -10 predicate places. [2023-08-29 21:29:00,034 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 56 transitions, 188 flow [2023-08-29 21:29:00,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 176.75) internal successors, (707), 4 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:29:00,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:29:00,035 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 21:29:00,047 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-08-29 21:29:00,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:29:00,248 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-08-29 21:29:00,249 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:29:00,249 INFO L85 PathProgramCache]: Analyzing trace with hash 715195, now seen corresponding path program 1 times [2023-08-29 21:29:00,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:29:00,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [171210075] [2023-08-29 21:29:00,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:29:00,251 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:29:00,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:29:00,252 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:29:00,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-08-29 21:29:00,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:29:00,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 30 conjunts are in the unsatisfiable core [2023-08-29 21:29:00,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:29:00,442 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2023-08-29 21:29:00,456 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2023-08-29 21:29:00,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:29:00,482 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:29:00,482 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:29:00,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [171210075] [2023-08-29 21:29:00,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [171210075] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:29:00,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:29:00,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 21:29:00,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957633953] [2023-08-29 21:29:00,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:29:00,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 21:29:00,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:29:00,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 21:29:00,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-29 21:29:00,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 463 [2023-08-29 21:29:00,905 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 56 transitions, 188 flow. Second operand has 4 states, 4 states have (on average 175.75) internal successors, (703), 4 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:29:00,906 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:29:00,906 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 463 [2023-08-29 21:29:00,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:29:02,663 INFO L130 PetriNetUnfolder]: 1490/2318 cut-off events. [2023-08-29 21:29:02,664 INFO L131 PetriNetUnfolder]: For 51/51 co-relation queries the response was YES. [2023-08-29 21:29:02,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4966 conditions, 2318 events. 1490/2318 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 10888 event pairs, 1257 based on Foata normal form. 1/1178 useless extension candidates. Maximal degree in co-relation 4886. Up to 2312 conditions per place. [2023-08-29 21:29:02,671 INFO L137 encePairwiseOnDemand]: 458/463 looper letters, 55 selfloop transitions, 5 changer transitions 0/60 dead transitions. [2023-08-29 21:29:02,671 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 60 transitions, 329 flow [2023-08-29 21:29:02,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 21:29:02,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 21:29:02,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 759 transitions. [2023-08-29 21:29:02,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40982721382289417 [2023-08-29 21:29:02,674 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 759 transitions. [2023-08-29 21:29:02,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 759 transitions. [2023-08-29 21:29:02,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:29:02,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 759 transitions. [2023-08-29 21:29:02,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 189.75) internal successors, (759), 4 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:29:02,678 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 463.0) internal successors, (2315), 5 states have internal predecessors, (2315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:29:02,678 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 463.0) internal successors, (2315), 5 states have internal predecessors, (2315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:29:02,678 INFO L175 Difference]: Start difference. First operand has 58 places, 56 transitions, 188 flow. Second operand 4 states and 759 transitions. [2023-08-29 21:29:02,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 60 transitions, 329 flow [2023-08-29 21:29:02,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 60 transitions, 320 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 21:29:02,682 INFO L231 Difference]: Finished difference. Result has 60 places, 56 transitions, 196 flow [2023-08-29 21:29:02,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=196, PETRI_PLACES=60, PETRI_TRANSITIONS=56} [2023-08-29 21:29:02,684 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -8 predicate places. [2023-08-29 21:29:02,684 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 56 transitions, 196 flow [2023-08-29 21:29:02,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 175.75) internal successors, (703), 4 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:29:02,686 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:29:02,686 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-29 21:29:02,696 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-08-29 21:29:02,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:29:02,897 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-08-29 21:29:02,897 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:29:02,897 INFO L85 PathProgramCache]: Analyzing trace with hash 22168903, now seen corresponding path program 1 times [2023-08-29 21:29:02,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:29:02,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2085475873] [2023-08-29 21:29:02,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:29:02,898 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:29:02,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:29:02,901 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:29:02,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-08-29 21:29:02,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:29:02,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-29 21:29:02,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:29:02,977 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:29:02,978 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:29:02,978 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:29:02,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2085475873] [2023-08-29 21:29:02,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2085475873] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:29:02,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:29:02,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 21:29:02,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982780114] [2023-08-29 21:29:02,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:29:02,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:29:02,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:29:02,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:29:02,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:29:03,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 463 [2023-08-29 21:29:03,001 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 56 transitions, 196 flow. Second operand has 3 states, 3 states have (on average 191.33333333333334) internal successors, (574), 3 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:29:03,001 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:29:03,001 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 463 [2023-08-29 21:29:03,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:29:05,260 INFO L130 PetriNetUnfolder]: 1488/2316 cut-off events. [2023-08-29 21:29:05,261 INFO L131 PetriNetUnfolder]: For 51/51 co-relation queries the response was YES. [2023-08-29 21:29:05,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4960 conditions, 2316 events. 1488/2316 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 10867 event pairs, 1257 based on Foata normal form. 2/1177 useless extension candidates. Maximal degree in co-relation 4917. Up to 2313 conditions per place. [2023-08-29 21:29:05,272 INFO L137 encePairwiseOnDemand]: 460/463 looper letters, 52 selfloop transitions, 4 changer transitions 0/56 dead transitions. [2023-08-29 21:29:05,273 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 56 transitions, 300 flow [2023-08-29 21:29:05,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:29:05,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:29:05,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 624 transitions. [2023-08-29 21:29:05,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44924406047516197 [2023-08-29 21:29:05,275 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 624 transitions. [2023-08-29 21:29:05,275 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 624 transitions. [2023-08-29 21:29:05,276 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:29:05,276 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 624 transitions. [2023-08-29 21:29:05,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 208.0) internal successors, (624), 3 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:29:05,279 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:29:05,279 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:29:05,280 INFO L175 Difference]: Start difference. First operand has 60 places, 56 transitions, 196 flow. Second operand 3 states and 624 transitions. [2023-08-29 21:29:05,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 56 transitions, 300 flow [2023-08-29 21:29:05,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 56 transitions, 292 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-29 21:29:05,283 INFO L231 Difference]: Finished difference. Result has 59 places, 54 transitions, 180 flow [2023-08-29 21:29:05,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=59, PETRI_TRANSITIONS=54} [2023-08-29 21:29:05,285 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -9 predicate places. [2023-08-29 21:29:05,285 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 54 transitions, 180 flow [2023-08-29 21:29:05,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 191.33333333333334) internal successors, (574), 3 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:29:05,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:29:05,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-29 21:29:05,300 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-08-29 21:29:05,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:29:05,492 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-08-29 21:29:05,493 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:29:05,493 INFO L85 PathProgramCache]: Analyzing trace with hash 22171597, now seen corresponding path program 1 times [2023-08-29 21:29:05,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:29:05,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [945419925] [2023-08-29 21:29:05,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:29:05,493 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:29:05,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:29:05,494 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:29:05,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-08-29 21:29:05,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:29:05,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 44 conjunts are in the unsatisfiable core [2023-08-29 21:29:05,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:29:08,423 INFO L321 Elim1Store]: treesize reduction 324, result has 30.9 percent of original size [2023-08-29 21:29:08,424 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 442 treesize of output 633 [2023-08-29 21:29:14,786 WARN L222 SmtUtils]: Spent 6.22s on a formula simplification. DAG size of input: 117 DAG size of output: 54 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-08-29 21:29:14,787 INFO L321 Elim1Store]: treesize reduction 324, result has 30.9 percent of original size [2023-08-29 21:29:14,787 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 442 treesize of output 633 [2023-08-29 21:29:15,207 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-08-29 21:29:15,457 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 8 treesize of output 7 [2023-08-29 21:29:15,632 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 8 treesize of output 7 [2023-08-29 21:29:15,870 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 12 treesize of output 11 [2023-08-29 21:29:16,013 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 12 treesize of output 11 [2023-08-29 21:29:16,150 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 10 treesize of output 9 [2023-08-29 21:29:16,293 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 8 treesize of output 7 [2023-08-29 21:29:16,408 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 8 treesize of output 7 [2023-08-29 21:29:16,507 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 12 treesize of output 11 [2023-08-29 21:29:16,622 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 8 treesize of output 7 [2023-08-29 21:29:23,654 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:29:23,674 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:29:23,766 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:29:23,781 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:29:23,839 INFO L217 Elim1Store]: Index analysis took 224 ms [2023-08-29 21:29:24,029 INFO L321 Elim1Store]: treesize reduction 242, result has 8.0 percent of original size [2023-08-29 21:29:24,030 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 16 case distinctions, treesize of input 244 treesize of output 420 [2023-08-29 21:29:24,520 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 9 treesize of output 7 [2023-08-29 21:29:24,592 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:29:24,596 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:29:24,600 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 159 treesize of output 259 [2023-08-29 21:29:24,622 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 9 treesize of output 7 [2023-08-29 21:29:24,952 INFO L217 Elim1Store]: Index analysis took 146 ms [2023-08-29 21:29:25,039 INFO L321 Elim1Store]: treesize reduction 125, result has 12.0 percent of original size [2023-08-29 21:29:25,040 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 15 case distinctions, treesize of input 159 treesize of output 259 [2023-08-29 21:29:25,640 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:29:25,669 INFO L217 Elim1Store]: Index analysis took 109 ms [2023-08-29 21:29:25,751 INFO L321 Elim1Store]: treesize reduction 216, result has 7.3 percent of original size [2023-08-29 21:29:25,751 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 13 case distinctions, treesize of input 318 treesize of output 317 [2023-08-29 21:29:26,172 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 9 treesize of output 7 [2023-08-29 21:29:26,524 INFO L321 Elim1Store]: treesize reduction 47, result has 26.6 percent of original size [2023-08-29 21:29:26,524 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 79 treesize of output 56 [2023-08-29 21:29:26,726 INFO L321 Elim1Store]: treesize reduction 110, result has 6.8 percent of original size [2023-08-29 21:29:26,726 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 100 treesize of output 37 [2023-08-29 21:29:26,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:29:26,845 INFO L321 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2023-08-29 21:29:26,845 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 24 [2023-08-29 21:29:26,858 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 9 treesize of output 7 [2023-08-29 21:29:27,179 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 236 treesize of output 220 [2023-08-29 21:29:27,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:29:27,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:29:27,464 INFO L321 Elim1Store]: treesize reduction 343, result has 12.9 percent of original size [2023-08-29 21:29:27,464 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 19 case distinctions, treesize of input 683 treesize of output 882 [2023-08-29 21:29:27,515 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 276 treesize of output 274 [2023-08-29 21:29:27,536 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 274 treesize of output 272 [2023-08-29 21:29:28,123 INFO L321 Elim1Store]: treesize reduction 67, result has 23.9 percent of original size [2023-08-29 21:29:28,124 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 986 treesize of output 913 [2023-08-29 21:29:28,187 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 337 treesize of output 335 [2023-08-29 21:29:28,204 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 335 treesize of output 333 [2023-08-29 21:29:28,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:29:28,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:29:28,810 INFO L321 Elim1Store]: treesize reduction 264, result has 16.2 percent of original size [2023-08-29 21:29:28,811 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 13 case distinctions, treesize of input 411947 treesize of output 412005 [2023-08-29 21:29:29,087 INFO L321 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2023-08-29 21:29:29,087 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 145 treesize of output 16 [2023-08-29 21:29:29,207 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 171 treesize of output 115 [2023-08-29 21:29:30,178 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:29:30,178 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:29:30,178 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:29:30,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [945419925] [2023-08-29 21:29:30,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [945419925] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:29:30,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:29:30,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 21:29:30,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690919929] [2023-08-29 21:29:30,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:29:30,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 21:29:30,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:29:30,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 21:29:30,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-29 21:29:30,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 463 [2023-08-29 21:29:30,875 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 54 transitions, 180 flow. Second operand has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:29:30,875 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:29:30,875 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 463 [2023-08-29 21:29:30,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:29:33,318 INFO L130 PetriNetUnfolder]: 1488/2314 cut-off events. [2023-08-29 21:29:33,319 INFO L131 PetriNetUnfolder]: For 52/52 co-relation queries the response was YES. [2023-08-29 21:29:33,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4953 conditions, 2314 events. 1488/2314 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 10852 event pairs, 1257 based on Foata normal form. 0/1175 useless extension candidates. Maximal degree in co-relation 4897. Up to 2310 conditions per place. [2023-08-29 21:29:33,330 INFO L137 encePairwiseOnDemand]: 457/463 looper letters, 52 selfloop transitions, 4 changer transitions 0/56 dead transitions. [2023-08-29 21:29:33,330 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 56 transitions, 302 flow [2023-08-29 21:29:33,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 21:29:33,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 21:29:33,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 725 transitions. [2023-08-29 21:29:33,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39146868250539957 [2023-08-29 21:29:33,335 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 725 transitions. [2023-08-29 21:29:33,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 725 transitions. [2023-08-29 21:29:33,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:29:33,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 725 transitions. [2023-08-29 21:29:33,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 181.25) internal successors, (725), 4 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:29:33,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 463.0) internal successors, (2315), 5 states have internal predecessors, (2315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:29:33,342 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 463.0) internal successors, (2315), 5 states have internal predecessors, (2315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:29:33,342 INFO L175 Difference]: Start difference. First operand has 59 places, 54 transitions, 180 flow. Second operand 4 states and 725 transitions. [2023-08-29 21:29:33,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 56 transitions, 302 flow [2023-08-29 21:29:33,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 56 transitions, 293 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 21:29:33,344 INFO L231 Difference]: Finished difference. Result has 61 places, 55 transitions, 192 flow [2023-08-29 21:29:33,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=192, PETRI_PLACES=61, PETRI_TRANSITIONS=55} [2023-08-29 21:29:33,345 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -7 predicate places. [2023-08-29 21:29:33,345 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 55 transitions, 192 flow [2023-08-29 21:29:33,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 168.0) internal successors, (672), 4 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:29:33,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:29:33,346 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-29 21:29:33,359 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 (8)] Forceful destruction successful, exit code 0 [2023-08-29 21:29:33,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:29:33,556 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-08-29 21:29:33,557 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:29:33,557 INFO L85 PathProgramCache]: Analyzing trace with hash 22171596, now seen corresponding path program 1 times [2023-08-29 21:29:33,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:29:33,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [560892144] [2023-08-29 21:29:33,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:29:33,557 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:29:33,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:29:33,558 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:29:33,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-08-29 21:29:33,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:29:33,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 19 conjunts are in the unsatisfiable core [2023-08-29 21:29:33,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:29:33,845 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:29:33,845 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:29:33,845 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:29:33,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [560892144] [2023-08-29 21:29:33,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [560892144] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:29:33,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:29:33,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 21:29:33,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176493162] [2023-08-29 21:29:33,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:29:33,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 21:29:33,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:29:33,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 21:29:33,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-29 21:29:34,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 463 [2023-08-29 21:29:34,201 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 55 transitions, 192 flow. Second operand has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:29:34,201 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:29:34,201 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 463 [2023-08-29 21:29:34,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:29:35,526 INFO L130 PetriNetUnfolder]: 1488/2313 cut-off events. [2023-08-29 21:29:35,526 INFO L131 PetriNetUnfolder]: For 52/52 co-relation queries the response was YES. [2023-08-29 21:29:35,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4955 conditions, 2313 events. 1488/2313 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 10820 event pairs, 1257 based on Foata normal form. 1/1176 useless extension candidates. Maximal degree in co-relation 4921. Up to 2310 conditions per place. [2023-08-29 21:29:35,533 INFO L137 encePairwiseOnDemand]: 460/463 looper letters, 53 selfloop transitions, 2 changer transitions 0/55 dead transitions. [2023-08-29 21:29:35,533 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 55 transitions, 301 flow [2023-08-29 21:29:35,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:29:35,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:29:35,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 606 transitions. [2023-08-29 21:29:35,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43628509719222464 [2023-08-29 21:29:35,536 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 606 transitions. [2023-08-29 21:29:35,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 606 transitions. [2023-08-29 21:29:35,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:29:35,537 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 606 transitions. [2023-08-29 21:29:35,537 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 202.0) internal successors, (606), 3 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:29:35,539 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:29:35,539 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 463.0) internal successors, (1852), 4 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:29:35,539 INFO L175 Difference]: Start difference. First operand has 61 places, 55 transitions, 192 flow. Second operand 3 states and 606 transitions. [2023-08-29 21:29:35,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 55 transitions, 301 flow [2023-08-29 21:29:35,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 55 transitions, 297 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 21:29:35,543 INFO L231 Difference]: Finished difference. Result has 61 places, 54 transitions, 185 flow [2023-08-29 21:29:35,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=185, PETRI_PLACES=61, PETRI_TRANSITIONS=54} [2023-08-29 21:29:35,545 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -7 predicate places. [2023-08-29 21:29:35,545 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 54 transitions, 185 flow [2023-08-29 21:29:35,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 185.0) internal successors, (740), 4 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:29:35,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:29:35,545 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-29 21:29:35,560 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-08-29 21:29:35,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:29:35,756 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-08-29 21:29:35,756 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:29:35,756 INFO L85 PathProgramCache]: Analyzing trace with hash 687317365, now seen corresponding path program 1 times [2023-08-29 21:29:35,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:29:35,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2022251990] [2023-08-29 21:29:35,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:29:35,757 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:29:35,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:29:35,758 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:29:35,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-08-29 21:29:35,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:29:35,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 21:29:35,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:29:35,912 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:29:35,912 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 21:29:35,928 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:29:35,928 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:29:35,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2022251990] [2023-08-29 21:29:35,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2022251990] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 21:29:35,928 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-29 21:29:35,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-08-29 21:29:35,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235455267] [2023-08-29 21:29:35,929 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-29 21:29:35,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 21:29:35,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:29:35,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 21:29:35,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-29 21:29:35,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 463 [2023-08-29 21:29:35,955 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 54 transitions, 185 flow. Second operand has 6 states, 6 states have (on average 190.33333333333334) internal successors, (1142), 6 states have internal predecessors, (1142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:29:35,955 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:29:35,956 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 463 [2023-08-29 21:29:35,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:29:37,917 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-29 21:29:39,704 INFO L130 PetriNetUnfolder]: 1491/2328 cut-off events. [2023-08-29 21:29:39,705 INFO L131 PetriNetUnfolder]: For 61/61 co-relation queries the response was YES. [2023-08-29 21:29:39,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5018 conditions, 2328 events. 1491/2328 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 10912 event pairs, 1257 based on Foata normal form. 6/1193 useless extension candidates. Maximal degree in co-relation 4972. Up to 2307 conditions per place. [2023-08-29 21:29:39,711 INFO L137 encePairwiseOnDemand]: 457/463 looper letters, 58 selfloop transitions, 10 changer transitions 0/68 dead transitions. [2023-08-29 21:29:39,711 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 68 transitions, 411 flow [2023-08-29 21:29:39,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 21:29:39,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 21:29:39,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1202 transitions. [2023-08-29 21:29:39,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4326853851691865 [2023-08-29 21:29:39,714 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1202 transitions. [2023-08-29 21:29:39,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1202 transitions. [2023-08-29 21:29:39,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:29:39,715 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1202 transitions. [2023-08-29 21:29:39,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 200.33333333333334) internal successors, (1202), 6 states have internal predecessors, (1202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:29:39,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 463.0) internal successors, (3241), 7 states have internal predecessors, (3241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:29:39,719 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 463.0) internal successors, (3241), 7 states have internal predecessors, (3241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:29:39,720 INFO L175 Difference]: Start difference. First operand has 61 places, 54 transitions, 185 flow. Second operand 6 states and 1202 transitions. [2023-08-29 21:29:39,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 68 transitions, 411 flow [2023-08-29 21:29:39,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 68 transitions, 407 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 21:29:39,721 INFO L231 Difference]: Finished difference. Result has 68 places, 60 transitions, 275 flow [2023-08-29 21:29:39,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=275, PETRI_PLACES=68, PETRI_TRANSITIONS=60} [2023-08-29 21:29:39,722 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 0 predicate places. [2023-08-29 21:29:39,722 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 60 transitions, 275 flow [2023-08-29 21:29:39,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 190.33333333333334) internal successors, (1142), 6 states have internal predecessors, (1142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:29:39,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:29:39,722 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2023-08-29 21:29:39,731 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2023-08-29 21:29:39,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:29:39,931 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-08-29 21:29:39,931 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:29:39,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1843323079, now seen corresponding path program 2 times [2023-08-29 21:29:39,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:29:39,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [226022905] [2023-08-29 21:29:39,932 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 21:29:39,932 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:29:39,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:29:39,933 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:29:39,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-08-29 21:29:40,419 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-29 21:29:40,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 21:29:40,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 727 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-29 21:29:40,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:29:40,473 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:29:40,474 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 21:29:40,543 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:29:40,544 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:29:40,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [226022905] [2023-08-29 21:29:40,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [226022905] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 21:29:40,544 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-29 21:29:40,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-08-29 21:29:40,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305517305] [2023-08-29 21:29:40,544 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-29 21:29:40,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-29 21:29:40,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:29:40,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-29 21:29:40,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-08-29 21:29:40,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 463 [2023-08-29 21:29:40,633 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 60 transitions, 275 flow. Second operand has 12 states, 12 states have (on average 190.16666666666666) internal successors, (2282), 12 states have internal predecessors, (2282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:29:40,633 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:29:40,633 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 463 [2023-08-29 21:29:40,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:29:44,140 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-29 21:29:50,853 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-29 21:30:03,371 INFO L130 PetriNetUnfolder]: 1491/2358 cut-off events. [2023-08-29 21:30:03,371 INFO L131 PetriNetUnfolder]: For 179/179 co-relation queries the response was YES. [2023-08-29 21:30:03,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5236 conditions, 2358 events. 1491/2358 cut-off events. For 179/179 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 11232 event pairs, 1257 based on Foata normal form. 12/1223 useless extension candidates. Maximal degree in co-relation 4955. Up to 2307 conditions per place. [2023-08-29 21:30:03,377 INFO L137 encePairwiseOnDemand]: 457/463 looper letters, 76 selfloop transitions, 16 changer transitions 0/92 dead transitions. [2023-08-29 21:30:03,378 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 92 transitions, 767 flow [2023-08-29 21:30:03,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-29 21:30:03,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-29 21:30:03,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2363 transitions. [2023-08-29 21:30:03,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42530597552195826 [2023-08-29 21:30:03,401 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2363 transitions. [2023-08-29 21:30:03,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2363 transitions. [2023-08-29 21:30:03,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:30:03,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2363 transitions. [2023-08-29 21:30:03,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 196.91666666666666) internal successors, (2363), 12 states have internal predecessors, (2363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:30:03,420 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 463.0) internal successors, (6019), 13 states have internal predecessors, (6019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:30:03,421 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 463.0) internal successors, (6019), 13 states have internal predecessors, (6019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:30:03,421 INFO L175 Difference]: Start difference. First operand has 68 places, 60 transitions, 275 flow. Second operand 12 states and 2363 transitions. [2023-08-29 21:30:03,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 92 transitions, 767 flow [2023-08-29 21:30:03,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 92 transitions, 763 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 21:30:03,424 INFO L231 Difference]: Finished difference. Result has 85 places, 69 transitions, 436 flow [2023-08-29 21:30:03,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=436, PETRI_PLACES=85, PETRI_TRANSITIONS=69} [2023-08-29 21:30:03,425 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 17 predicate places. [2023-08-29 21:30:03,425 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 69 transitions, 436 flow [2023-08-29 21:30:03,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 190.16666666666666) internal successors, (2282), 12 states have internal predecessors, (2282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:30:03,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:30:03,426 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1] [2023-08-29 21:30:03,444 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-08-29 21:30:03,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:30:03,640 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-08-29 21:30:03,640 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:30:03,640 INFO L85 PathProgramCache]: Analyzing trace with hash 509313543, now seen corresponding path program 3 times [2023-08-29 21:30:03,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:30:03,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [629077267] [2023-08-29 21:30:03,641 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-29 21:30:03,641 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:30:03,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:30:03,642 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:30:03,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-08-29 21:30:08,935 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-08-29 21:30:08,935 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 21:30:09,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 1699 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-29 21:30:09,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:30:09,112 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 1 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:30:09,112 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 21:30:09,418 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 1 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:30:09,418 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:30:09,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [629077267] [2023-08-29 21:30:09,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [629077267] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 21:30:09,419 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-29 21:30:09,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2023-08-29 21:30:09,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942131039] [2023-08-29 21:30:09,419 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-29 21:30:09,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-29 21:30:09,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:30:09,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-29 21:30:09,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2023-08-29 21:30:09,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 463 [2023-08-29 21:30:09,897 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 69 transitions, 436 flow. Second operand has 24 states, 24 states have (on average 190.08333333333334) internal successors, (4562), 24 states have internal predecessors, (4562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:30:09,897 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:30:09,897 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 463 [2023-08-29 21:30:09,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:30:16,157 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-29 21:30:19,436 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-29 21:30:28,204 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-29 21:30:36,190 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-29 21:30:40,585 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-29 21:30:46,158 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-29 21:30:50,103 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-29 21:31:00,021 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-29 21:31:01,179 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-29 21:31:04,075 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-29 21:31:06,325 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-29 21:31:07,361 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-29 21:31:08,508 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-29 21:31:13,524 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-29 21:31:15,209 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-29 21:31:40,485 INFO L130 PetriNetUnfolder]: 1491/2418 cut-off events. [2023-08-29 21:31:40,485 INFO L131 PetriNetUnfolder]: For 1455/1455 co-relation queries the response was YES. [2023-08-29 21:31:40,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5759 conditions, 2418 events. 1491/2418 cut-off events. For 1455/1455 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 11651 event pairs, 1257 based on Foata normal form. 24/1283 useless extension candidates. Maximal degree in co-relation 5114. Up to 2307 conditions per place. [2023-08-29 21:31:40,492 INFO L137 encePairwiseOnDemand]: 457/463 looper letters, 112 selfloop transitions, 28 changer transitions 0/140 dead transitions. [2023-08-29 21:31:40,492 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 140 transitions, 1622 flow [2023-08-29 21:31:40,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-29 21:31:40,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-29 21:31:40,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4685 transitions. [2023-08-29 21:31:40,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4216162706983441 [2023-08-29 21:31:40,503 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4685 transitions. [2023-08-29 21:31:40,503 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4685 transitions. [2023-08-29 21:31:40,505 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:31:40,505 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4685 transitions. [2023-08-29 21:31:40,511 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 195.20833333333334) internal successors, (4685), 24 states have internal predecessors, (4685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:31:40,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 463.0) internal successors, (11575), 25 states have internal predecessors, (11575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:31:40,521 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 463.0) internal successors, (11575), 25 states have internal predecessors, (11575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:31:40,521 INFO L175 Difference]: Start difference. First operand has 85 places, 69 transitions, 436 flow. Second operand 24 states and 4685 transitions. [2023-08-29 21:31:40,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 140 transitions, 1622 flow [2023-08-29 21:31:40,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 140 transitions, 1528 flow, removed 13 selfloop flow, removed 4 redundant places. [2023-08-29 21:31:40,526 INFO L231 Difference]: Finished difference. Result has 117 places, 84 transitions, 699 flow [2023-08-29 21:31:40,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=463, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=699, PETRI_PLACES=117, PETRI_TRANSITIONS=84} [2023-08-29 21:31:40,526 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 49 predicate places. [2023-08-29 21:31:40,527 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 84 transitions, 699 flow [2023-08-29 21:31:40,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 190.08333333333334) internal successors, (4562), 24 states have internal predecessors, (4562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:31:40,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:31:40,528 INFO L208 CegarLoopForPetriNet]: trace histogram [22, 1, 1, 1, 1] [2023-08-29 21:31:40,565 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-08-29 21:31:40,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:31:40,741 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-08-29 21:31:40,741 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:31:40,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1694430343, now seen corresponding path program 4 times [2023-08-29 21:31:40,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:31:40,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [337571299] [2023-08-29 21:31:40,742 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-29 21:31:40,742 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:31:40,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:31:40,743 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:31:40,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-08-29 21:31:50,042 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-29 21:31:50,042 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 21:31:50,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 3643 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-29 21:31:50,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:31:50,508 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 1 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:31:50,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 21:31:51,418 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 1 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:31:51,419 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:31:51,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [337571299] [2023-08-29 21:31:51,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [337571299] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 21:31:51,419 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-29 21:31:51,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 48 [2023-08-29 21:31:51,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655043553] [2023-08-29 21:31:51,419 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-29 21:31:51,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-08-29 21:31:51,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:31:51,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-08-29 21:31:51,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=502, Invalid=1754, Unknown=0, NotChecked=0, Total=2256 [2023-08-29 21:31:52,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 463 [2023-08-29 21:31:52,828 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 84 transitions, 699 flow. Second operand has 48 states, 48 states have (on average 190.04166666666666) internal successors, (9122), 48 states have internal predecessors, (9122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:31:52,829 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:31:52,829 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 463 [2023-08-29 21:31:52,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:31:55,767 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-29 21:32:03,411 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-29 21:32:07,032 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-29 21:32:11,285 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-29 21:32:16,635 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-29 21:32:27,640 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-29 21:32:32,474 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-29 21:32:34,653 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-29 21:32:37,758 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-29 21:32:40,763 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-29 21:32:46,827 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-29 21:32:48,533 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-29 21:32:59,683 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-29 21:33:01,269 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-29 21:33:08,638 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-29 21:33:10,093 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-29 21:33:11,599 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-29 21:33:14,461 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-29 21:33:17,206 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-29 21:33:18,433 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-29 21:33:19,734 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-29 21:33:21,972 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-29 21:33:26,021 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-29 21:33:27,143 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-29 21:33:31,711 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-29 21:33:32,951 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-29 21:33:35,081 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-29 21:33:36,460 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-29 21:33:37,909 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-29 21:33:40,012 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-29 21:33:44,332 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-29 21:33:47,614 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-29 21:33:52,255 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-29 21:33:54,708 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-29 21:33:55,928 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-29 21:33:57,618 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-29 21:34:01,943 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-29 21:34:03,723 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-29 21:34:04,856 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-29 21:34:08,526 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-29 21:34:09,566 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-29 21:34:10,922 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-29 21:34:15,200 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-29 21:34:16,319 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-29 21:34:18,975 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-29 21:34:20,967 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-29 21:34:23,062 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-29 21:34:24,174 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-29 21:34:25,697 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-29 21:34:28,585 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-29 21:34:29,637 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-29 21:34:33,391 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-29 21:34:46,229 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-29 21:34:47,638 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15