./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/goblint-regression/09-regions_22-nocollapse.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/goblint-regression/09-regions_22-nocollapse.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 a0270befea30c9963adb19613f3074c8c29d9100e1f0592dc0c89cf3d3dda0df --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 03:48:34,013 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 03:48:34,014 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 03:48:34,035 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 03:48:34,036 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 03:48:34,038 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 03:48:34,040 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 03:48:34,041 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 03:48:34,042 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 03:48:34,043 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 03:48:34,044 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 03:48:34,044 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 03:48:34,045 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 03:48:34,045 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 03:48:34,046 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 03:48:34,047 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 03:48:34,047 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 03:48:34,048 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 03:48:34,049 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 03:48:34,050 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 03:48:34,053 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 03:48:34,055 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 03:48:34,056 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 03:48:34,057 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 03:48:34,059 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 03:48:34,063 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 03:48:34,063 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 03:48:34,064 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 03:48:34,065 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 03:48:34,065 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 03:48:34,066 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 03:48:34,066 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 03:48:34,067 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 03:48:34,068 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 03:48:34,069 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 03:48:34,069 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 03:48:34,070 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 03:48:34,070 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 03:48:34,071 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 03:48:34,071 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 03:48:34,071 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 03:48:34,076 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-30 03:48:34,106 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 03:48:34,106 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 03:48:34,107 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 03:48:34,107 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 03:48:34,107 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 03:48:34,108 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 03:48:34,108 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 03:48:34,108 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 03:48:34,108 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 03:48:34,108 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 03:48:34,109 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 03:48:34,109 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 03:48:34,109 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 03:48:34,109 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 03:48:34,110 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 03:48:34,110 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 03:48:34,110 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 03:48:34,110 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 03:48:34,110 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 03:48:34,110 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 03:48:34,110 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 03:48:34,110 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 03:48:34,111 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 03:48:34,111 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 03:48:34,111 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 03:48:34,111 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 03:48:34,111 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 03:48:34,111 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 03:48:34,111 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 03:48:34,112 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 03:48:34,112 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 03:48:34,112 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 03:48:34,112 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 03:48:34,112 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 03:48:34,112 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a0270befea30c9963adb19613f3074c8c29d9100e1f0592dc0c89cf3d3dda0df Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 03:48:34,348 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 03:48:34,373 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 03:48:34,374 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 03:48:34,375 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 03:48:34,375 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 03:48:34,376 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/09-regions_22-nocollapse.i [2023-08-30 03:48:35,353 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 03:48:35,533 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 03:48:35,534 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/09-regions_22-nocollapse.i [2023-08-30 03:48:35,544 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91891f9b1/d21a7d3e12a343f99c59d1a1c43e7776/FLAG826974905 [2023-08-30 03:48:35,560 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91891f9b1/d21a7d3e12a343f99c59d1a1c43e7776 [2023-08-30 03:48:35,562 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 03:48:35,563 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 03:48:35,564 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 03:48:35,564 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 03:48:35,566 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 03:48:35,566 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:48:35" (1/1) ... [2023-08-30 03:48:35,569 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@611bd506 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:48:35, skipping insertion in model container [2023-08-30 03:48:35,569 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:48:35" (1/1) ... [2023-08-30 03:48:35,573 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 03:48:35,606 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 03:48:35,895 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 03:48:35,895 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 03:48:35,896 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 03:48:35,897 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 03:48:35,927 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 03:48:35,945 ERROR L324 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-08-30 03:48:35,946 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@403a7841 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:48:35, skipping insertion in model container [2023-08-30 03:48:35,946 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 03:48:35,946 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-08-30 03:48:35,948 INFO L158 Benchmark]: Toolchain (without parser) took 384.01ms. Allocated memory is still 67.1MB. Free memory was 36.5MB in the beginning and 36.8MB in the end (delta: -254.3kB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. [2023-08-30 03:48:35,948 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 54.5MB. Free memory is still 32.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 03:48:35,949 INFO L158 Benchmark]: CACSL2BoogieTranslator took 382.25ms. Allocated memory is still 67.1MB. Free memory was 36.3MB in the beginning and 36.8MB in the end (delta: -420.1kB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. [2023-08-30 03:48:35,949 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 54.5MB. Free memory is still 32.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 382.25ms. Allocated memory is still 67.1MB. Free memory was 36.3MB in the beginning and 36.8MB in the end (delta: -420.1kB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1038]: 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_22-nocollapse.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 a0270befea30c9963adb19613f3074c8c29d9100e1f0592dc0c89cf3d3dda0df --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 03:48:37,277 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 03:48:37,279 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 03:48:37,301 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 03:48:37,316 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 03:48:37,318 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 03:48:37,319 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 03:48:37,320 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 03:48:37,321 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 03:48:37,321 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 03:48:37,322 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 03:48:37,323 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 03:48:37,323 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 03:48:37,324 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 03:48:37,324 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 03:48:37,325 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 03:48:37,326 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 03:48:37,326 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 03:48:37,327 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 03:48:37,328 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 03:48:37,329 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 03:48:37,330 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 03:48:37,331 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 03:48:37,331 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 03:48:37,333 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 03:48:37,334 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 03:48:37,338 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 03:48:37,338 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 03:48:37,339 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 03:48:37,340 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 03:48:37,340 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 03:48:37,341 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 03:48:37,342 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 03:48:37,342 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 03:48:37,343 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 03:48:37,344 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 03:48:37,344 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 03:48:37,345 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 03:48:37,345 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 03:48:37,346 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 03:48:37,346 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 03:48:37,361 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-08-30 03:48:37,380 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 03:48:37,380 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 03:48:37,381 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 03:48:37,381 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 03:48:37,382 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 03:48:37,382 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 03:48:37,383 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 03:48:37,383 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 03:48:37,383 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 03:48:37,384 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 03:48:37,384 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 03:48:37,384 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 03:48:37,384 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 03:48:37,385 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 03:48:37,385 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 03:48:37,385 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 03:48:37,385 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 03:48:37,385 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 03:48:37,385 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 03:48:37,385 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 03:48:37,386 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-08-30 03:48:37,386 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-08-30 03:48:37,386 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 03:48:37,386 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 03:48:37,386 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 03:48:37,386 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 03:48:37,387 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 03:48:37,387 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 03:48:37,387 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 03:48:37,387 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 03:48:37,387 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-08-30 03:48:37,387 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-08-30 03:48:37,388 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 03:48:37,388 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 03:48:37,388 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 03:48:37,388 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-08-30 03:48:37,388 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 03:48:37,388 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a0270befea30c9963adb19613f3074c8c29d9100e1f0592dc0c89cf3d3dda0df Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 03:48:37,661 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 03:48:37,677 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 03:48:37,678 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 03:48:37,679 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 03:48:37,679 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 03:48:37,680 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/09-regions_22-nocollapse.i [2023-08-30 03:48:38,751 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 03:48:38,963 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 03:48:38,964 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/09-regions_22-nocollapse.i [2023-08-30 03:48:38,976 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65ccaa812/cc591905423544dcb09448adab809533/FLAG6db4bae74 [2023-08-30 03:48:38,988 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65ccaa812/cc591905423544dcb09448adab809533 [2023-08-30 03:48:38,989 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 03:48:38,990 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 03:48:38,991 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 03:48:38,991 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 03:48:38,999 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 03:48:39,000 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:48:38" (1/1) ... [2023-08-30 03:48:39,002 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@147cab96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:48:39, skipping insertion in model container [2023-08-30 03:48:39,002 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:48:38" (1/1) ... [2023-08-30 03:48:39,006 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 03:48:39,043 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 03:48:39,443 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 03:48:39,443 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 03:48:39,444 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 03:48:39,445 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 03:48:39,473 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 03:48:39,494 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-08-30 03:48:39,498 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 03:48:39,524 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 03:48:39,524 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 03:48:39,525 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 03:48:39,525 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 03:48:39,539 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 03:48:39,549 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 03:48:39,592 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 03:48:39,592 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 03:48:39,593 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 03:48:39,593 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-30 03:48:39,602 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 03:48:39,660 INFO L208 MainTranslator]: Completed translation [2023-08-30 03:48:39,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:48:39 WrapperNode [2023-08-30 03:48:39,661 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 03:48:39,662 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 03:48:39,662 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 03:48:39,663 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 03:48:39,667 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:48:39" (1/1) ... [2023-08-30 03:48:39,693 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:48:39" (1/1) ... [2023-08-30 03:48:39,715 INFO L138 Inliner]: procedures = 275, calls = 35, calls flagged for inlining = 9, calls inlined = 8, statements flattened = 128 [2023-08-30 03:48:39,716 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 03:48:39,717 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 03:48:39,717 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 03:48:39,717 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 03:48:39,722 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:48:39" (1/1) ... [2023-08-30 03:48:39,723 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:48:39" (1/1) ... [2023-08-30 03:48:39,743 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:48:39" (1/1) ... [2023-08-30 03:48:39,743 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:48:39" (1/1) ... [2023-08-30 03:48:39,760 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:48:39" (1/1) ... [2023-08-30 03:48:39,763 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:48:39" (1/1) ... [2023-08-30 03:48:39,765 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:48:39" (1/1) ... [2023-08-30 03:48:39,773 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:48:39" (1/1) ... [2023-08-30 03:48:39,776 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 03:48:39,778 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 03:48:39,778 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 03:48:39,778 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 03:48:39,779 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:48:39" (1/1) ... [2023-08-30 03:48:39,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 03:48:39,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 03:48:39,799 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 03:48:39,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 03:48:39,848 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-08-30 03:48:39,848 INFO L130 BoogieDeclarations]: Found specification of procedure f [2023-08-30 03:48:39,848 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2023-08-30 03:48:39,849 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 03:48:39,849 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-30 03:48:39,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 03:48:39,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-08-30 03:48:39,849 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 03:48:39,849 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 03:48:39,849 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 03:48:39,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-30 03:48:39,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 03:48:39,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 03:48:39,851 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 03:48:40,007 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 03:48:40,010 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 03:48:40,369 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 03:48:40,376 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 03:48:40,376 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-30 03:48:40,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:48:40 BoogieIcfgContainer [2023-08-30 03:48:40,378 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 03:48:40,379 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 03:48:40,379 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 03:48:40,381 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 03:48:40,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 03:48:38" (1/3) ... [2023-08-30 03:48:40,382 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3193f9e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:48:40, skipping insertion in model container [2023-08-30 03:48:40,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:48:39" (2/3) ... [2023-08-30 03:48:40,382 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3193f9e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:48:40, skipping insertion in model container [2023-08-30 03:48:40,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:48:40" (3/3) ... [2023-08-30 03:48:40,383 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_22-nocollapse.i [2023-08-30 03:48:40,393 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 03:48:40,394 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 33 error locations. [2023-08-30 03:48:40,394 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 03:48:40,534 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 03:48:40,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 209 places, 217 transitions, 444 flow [2023-08-30 03:48:40,647 INFO L130 PetriNetUnfolder]: 15/215 cut-off events. [2023-08-30 03:48:40,647 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 03:48:40,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222 conditions, 215 events. 15/215 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 654 event pairs, 0 based on Foata normal form. 0/159 useless extension candidates. Maximal degree in co-relation 156. Up to 2 conditions per place. [2023-08-30 03:48:40,653 INFO L82 GeneralOperation]: Start removeDead. Operand has 209 places, 217 transitions, 444 flow [2023-08-30 03:48:40,663 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 207 places, 215 transitions, 436 flow [2023-08-30 03:48:40,665 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 03:48:40,672 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 207 places, 215 transitions, 436 flow [2023-08-30 03:48:40,675 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 207 places, 215 transitions, 436 flow [2023-08-30 03:48:40,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 207 places, 215 transitions, 436 flow [2023-08-30 03:48:40,726 INFO L130 PetriNetUnfolder]: 15/215 cut-off events. [2023-08-30 03:48:40,726 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 03:48:40,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222 conditions, 215 events. 15/215 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 654 event pairs, 0 based on Foata normal form. 0/159 useless extension candidates. Maximal degree in co-relation 156. Up to 2 conditions per place. [2023-08-30 03:48:40,734 INFO L119 LiptonReduction]: Number of co-enabled transitions 7680 [2023-08-30 03:49:44,007 WARN L222 SmtUtils]: Spent 5.06s on a formula simplification. DAG size of input: 130 DAG size of output: 126 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:53:52,974 WARN L222 SmtUtils]: Spent 2.71m on a formula simplification. DAG size of input: 229 DAG size of output: 222 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:55:19,548 WARN L222 SmtUtils]: Spent 1.44m on a formula simplification that was a NOOP. DAG size: 218 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:57:35,912 WARN L222 SmtUtils]: Spent 2.27m 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) [2023-08-30 03:58:40,090 WARN L222 SmtUtils]: Spent 1.07m 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) [2023-08-30 03:58:40,099 INFO L134 LiptonReduction]: Checked pairs total: 12021 [2023-08-30 03:58:40,099 INFO L136 LiptonReduction]: Total number of compositions: 258 [2023-08-30 03:58:40,112 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 03:58:40,118 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;@86ac9d4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 03:58:40,118 INFO L358 AbstractCegarLoop]: Starting to check reachability of 51 error locations. [2023-08-30 03:58:40,120 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-08-30 03:58:40,120 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 03:58:40,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:58:40,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 03:58:40,121 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-08-30 03:58:40,124 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:58:40,124 INFO L85 PathProgramCache]: Analyzing trace with hash 24117, now seen corresponding path program 1 times [2023-08-30 03:58:40,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:58:40,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1279084490] [2023-08-30 03:58:40,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:58:40,132 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:58:40,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:58:40,133 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 03:58:40,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-08-30 03:58:40,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:58:40,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-30 03:58:40,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:58:40,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:58:40,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:58:40,315 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2023-08-30 03:58:40,316 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 [2023-08-30 03:58:40,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:58:40,358 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:58:40,359 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:58:40,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1279084490] [2023-08-30 03:58:40,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1279084490] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:58:40,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:58:40,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 03:58:40,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154056593] [2023-08-30 03:58:40,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:58:40,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:58:40,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:58:40,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:58:40,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:58:40,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 475 [2023-08-30 03:58:40,662 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 67 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 202.66666666666666) internal successors, (608), 3 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:58:40,662 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:58:40,663 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 475 [2023-08-30 03:58:40,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:58:42,121 INFO L130 PetriNetUnfolder]: 1387/2164 cut-off events. [2023-08-30 03:58:42,122 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2023-08-30 03:58:42,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4347 conditions, 2164 events. 1387/2164 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 11073 event pairs, 235 based on Foata normal form. 0/1041 useless extension candidates. Maximal degree in co-relation 4315. Up to 1694 conditions per place. [2023-08-30 03:58:42,137 INFO L137 encePairwiseOnDemand]: 454/475 looper letters, 74 selfloop transitions, 2 changer transitions 0/77 dead transitions. [2023-08-30 03:58:42,137 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 77 transitions, 312 flow [2023-08-30 03:58:42,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:58:42,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:58:42,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 703 transitions. [2023-08-30 03:58:42,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49333333333333335 [2023-08-30 03:58:42,150 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 703 transitions. [2023-08-30 03:58:42,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 703 transitions. [2023-08-30 03:58:42,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:58:42,158 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 703 transitions. [2023-08-30 03:58:42,162 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 234.33333333333334) internal successors, (703), 3 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) [2023-08-30 03:58:42,167 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 475.0) internal successors, (1900), 4 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:58:42,168 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 475.0) internal successors, (1900), 4 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:58:42,169 INFO L175 Difference]: Start difference. First operand has 68 places, 67 transitions, 140 flow. Second operand 3 states and 703 transitions. [2023-08-30 03:58:42,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 77 transitions, 312 flow [2023-08-30 03:58:42,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 77 transitions, 310 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 03:58:42,174 INFO L231 Difference]: Finished difference. Result has 52 places, 50 transitions, 114 flow [2023-08-30 03:58:42,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=52, PETRI_TRANSITIONS=50} [2023-08-30 03:58:42,177 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -16 predicate places. [2023-08-30 03:58:42,177 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 50 transitions, 114 flow [2023-08-30 03:58:42,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 202.66666666666666) internal successors, (608), 3 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:58:42,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:58:42,178 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 03:58:42,187 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-08-30 03:58:42,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:58:42,385 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-08-30 03:58:42,385 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:58:42,386 INFO L85 PathProgramCache]: Analyzing trace with hash 24119, now seen corresponding path program 1 times [2023-08-30 03:58:42,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:58:42,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1092939148] [2023-08-30 03:58:42,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:58:42,386 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:58:42,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:58:42,387 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 03:58:42,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-08-30 03:58:42,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:58:42,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-30 03:58:42,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:58:42,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:58:42,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:58:42,494 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-30 03:58:42,494 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 [2023-08-30 03:58:42,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:58:42,535 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:58:42,535 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:58:42,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1092939148] [2023-08-30 03:58:42,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1092939148] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:58:42,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:58:42,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 03:58:42,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826056878] [2023-08-30 03:58:42,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:58:42,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:58:42,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:58:42,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:58:42,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:58:42,838 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 475 [2023-08-30 03:58:42,839 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 50 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 200.66666666666666) internal successors, (602), 3 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:58:42,839 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:58:42,839 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 475 [2023-08-30 03:58:42,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:58:44,393 INFO L130 PetriNetUnfolder]: 1390/2211 cut-off events. [2023-08-30 03:58:44,394 INFO L131 PetriNetUnfolder]: For 198/198 co-relation queries the response was YES. [2023-08-30 03:58:44,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4793 conditions, 2211 events. 1390/2211 cut-off events. For 198/198 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 10623 event pairs, 1165 based on Foata normal form. 0/1166 useless extension candidates. Maximal degree in co-relation 4750. Up to 2155 conditions per place. [2023-08-30 03:58:44,401 INFO L137 encePairwiseOnDemand]: 464/475 looper letters, 49 selfloop transitions, 5 changer transitions 0/55 dead transitions. [2023-08-30 03:58:44,401 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 55 transitions, 232 flow [2023-08-30 03:58:44,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:58:44,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:58:44,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 660 transitions. [2023-08-30 03:58:44,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4631578947368421 [2023-08-30 03:58:44,404 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 660 transitions. [2023-08-30 03:58:44,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 660 transitions. [2023-08-30 03:58:44,404 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:58:44,404 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 660 transitions. [2023-08-30 03:58:44,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 220.0) internal successors, (660), 3 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:58:44,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 475.0) internal successors, (1900), 4 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:58:44,409 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 475.0) internal successors, (1900), 4 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:58:44,409 INFO L175 Difference]: Start difference. First operand has 52 places, 50 transitions, 114 flow. Second operand 3 states and 660 transitions. [2023-08-30 03:58:44,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 55 transitions, 232 flow [2023-08-30 03:58:44,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 55 transitions, 228 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 03:58:44,412 INFO L231 Difference]: Finished difference. Result has 53 places, 54 transitions, 153 flow [2023-08-30 03:58:44,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=153, PETRI_PLACES=53, PETRI_TRANSITIONS=54} [2023-08-30 03:58:44,413 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -15 predicate places. [2023-08-30 03:58:44,413 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 54 transitions, 153 flow [2023-08-30 03:58:44,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 200.66666666666666) internal successors, (602), 3 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:58:44,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:58:44,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 03:58:44,420 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-08-30 03:58:44,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:58:44,621 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-08-30 03:58:44,621 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:58:44,621 INFO L85 PathProgramCache]: Analyzing trace with hash 23203926, now seen corresponding path program 1 times [2023-08-30 03:58:44,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:58:44,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [929352120] [2023-08-30 03:58:44,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:58:44,623 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:58:44,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:58:44,624 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 03:58:44,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-08-30 03:58:44,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:58:44,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 30 conjunts are in the unsatisfiable core [2023-08-30 03:58:44,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:58:45,746 INFO L321 Elim1Store]: treesize reduction 188, result has 31.1 percent of original size [2023-08-30 03:58:45,747 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 8 case distinctions, treesize of input 2054 treesize of output 1213 [2023-08-30 03:58:45,825 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 [2023-08-30 03:58:45,859 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 20 treesize of output 19 [2023-08-30 03:58:45,884 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 20 treesize of output 19 [2023-08-30 03:58:45,926 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 1336 treesize of output 963 [2023-08-30 03:58:45,952 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 14 treesize of output 15 [2023-08-30 03:58:46,449 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 3 [2023-08-30 03:58:47,857 INFO L321 Elim1Store]: treesize reduction 112, result has 24.8 percent of original size [2023-08-30 03:58:47,857 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 228 treesize of output 268 [2023-08-30 03:58:47,870 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 130 treesize of output 124 [2023-08-30 03:58:48,132 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 3 [2023-08-30 03:58:48,420 INFO L321 Elim1Store]: treesize reduction 43, result has 2.3 percent of original size [2023-08-30 03:58:48,420 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 70 treesize of output 16 [2023-08-30 03:58:48,500 INFO L321 Elim1Store]: treesize reduction 29, result has 35.6 percent of original size [2023-08-30 03:58:48,500 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 885 treesize of output 770 [2023-08-30 03:58:48,562 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 17 treesize of output 11 [2023-08-30 03:58:48,686 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 17 treesize of output 11 [2023-08-30 03:58:48,696 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 3 [2023-08-30 03:58:48,945 INFO L321 Elim1Store]: treesize reduction 197, result has 21.5 percent of original size [2023-08-30 03:58:48,946 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 14 case distinctions, treesize of input 2068 treesize of output 1949 [2023-08-30 03:58:49,124 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 3 [2023-08-30 03:58:49,138 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-08-30 03:58:49,229 INFO L321 Elim1Store]: treesize reduction 43, result has 2.3 percent of original size [2023-08-30 03:58:49,233 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 70 treesize of output 16 [2023-08-30 03:58:50,073 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:58:50,073 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:58:50,073 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:58:50,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [929352120] [2023-08-30 03:58:50,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [929352120] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:58:50,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:58:50,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 03:58:50,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139677569] [2023-08-30 03:58:50,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:58:50,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 03:58:50,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:58:50,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 03:58:50,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 03:58:51,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 475 [2023-08-30 03:58:51,224 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 54 transitions, 153 flow. Second operand has 4 states, 4 states have (on average 181.0) internal successors, (724), 4 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:58:51,224 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:58:51,224 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 475 [2023-08-30 03:58:51,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:58:53,274 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 03:58:54,372 INFO L130 PetriNetUnfolder]: 1389/2209 cut-off events. [2023-08-30 03:58:54,373 INFO L131 PetriNetUnfolder]: For 47/47 co-relation queries the response was YES. [2023-08-30 03:58:54,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4649 conditions, 2209 events. 1389/2209 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 10622 event pairs, 1165 based on Foata normal form. 0/1167 useless extension candidates. Maximal degree in co-relation 4615. Up to 2149 conditions per place. [2023-08-30 03:58:54,381 INFO L137 encePairwiseOnDemand]: 468/475 looper letters, 43 selfloop transitions, 8 changer transitions 0/52 dead transitions. [2023-08-30 03:58:54,381 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 52 transitions, 246 flow [2023-08-30 03:58:54,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 03:58:54,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 03:58:54,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 769 transitions. [2023-08-30 03:58:54,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4047368421052632 [2023-08-30 03:58:54,384 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 769 transitions. [2023-08-30 03:58:54,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 769 transitions. [2023-08-30 03:58:54,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:58:54,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 769 transitions. [2023-08-30 03:58:54,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 192.25) internal successors, (769), 4 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:58:54,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 475.0) internal successors, (2375), 5 states have internal predecessors, (2375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:58:54,389 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 475.0) internal successors, (2375), 5 states have internal predecessors, (2375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:58:54,389 INFO L175 Difference]: Start difference. First operand has 53 places, 54 transitions, 153 flow. Second operand 4 states and 769 transitions. [2023-08-30 03:58:54,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 52 transitions, 246 flow [2023-08-30 03:58:54,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 52 transitions, 242 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 03:58:54,393 INFO L231 Difference]: Finished difference. Result has 54 places, 52 transitions, 156 flow [2023-08-30 03:58:54,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=156, PETRI_PLACES=54, PETRI_TRANSITIONS=52} [2023-08-30 03:58:54,394 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -14 predicate places. [2023-08-30 03:58:54,394 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 52 transitions, 156 flow [2023-08-30 03:58:54,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 181.0) internal successors, (724), 4 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:58:54,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:58:54,396 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 03:58:54,410 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-08-30 03:58:54,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:58:54,608 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-08-30 03:58:54,609 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:58:54,609 INFO L85 PathProgramCache]: Analyzing trace with hash 23203924, now seen corresponding path program 1 times [2023-08-30 03:58:54,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:58:54,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1072304043] [2023-08-30 03:58:54,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:58:54,609 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:58:54,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:58:54,610 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 03:58:54,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-08-30 03:58:55,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:58:55,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 47 conjunts are in the unsatisfiable core [2023-08-30 03:58:55,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:58:56,560 INFO L321 Elim1Store]: treesize reduction 188, result has 31.1 percent of original size [2023-08-30 03:58:56,561 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 8 case distinctions, treesize of input 506 treesize of output 589 [2023-08-30 03:58:59,658 INFO L321 Elim1Store]: treesize reduction 188, result has 31.1 percent of original size [2023-08-30 03:58:59,658 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 8 case distinctions, treesize of input 506 treesize of output 589 [2023-08-30 03:58:59,770 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 [2023-08-30 03:59:00,276 INFO L217 Elim1Store]: Index analysis took 469 ms [2023-08-30 03:59:00,854 INFO L321 Elim1Store]: treesize reduction 117, result has 17.6 percent of original size [2023-08-30 03:59:00,854 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 291 treesize of output 411 [2023-08-30 03:59:00,936 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 18 treesize of output 17 [2023-08-30 03:59:01,549 INFO L217 Elim1Store]: Index analysis took 576 ms [2023-08-30 03:59:02,079 INFO L321 Elim1Store]: treesize reduction 117, result has 17.6 percent of original size [2023-08-30 03:59:02,080 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 163 treesize of output 301 [2023-08-30 03:59:02,177 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 5 [2023-08-30 03:59:02,234 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 [2023-08-30 03:59:02,295 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 51 [2023-08-30 03:59:02,399 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 18 treesize of output 17 [2023-08-30 03:59:02,496 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 18 treesize of output 17 [2023-08-30 03:59:02,572 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 18 treesize of output 17 [2023-08-30 03:59:02,645 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 18 treesize of output 17 [2023-08-30 03:59:02,708 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 18 treesize of output 17 [2023-08-30 03:59:03,856 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 3 [2023-08-30 03:59:04,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:59:04,405 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 147 treesize of output 97 [2023-08-30 03:59:04,429 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 15 treesize of output 9 [2023-08-30 03:59:04,551 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 3 [2023-08-30 03:59:04,718 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 15 treesize of output 9 [2023-08-30 03:59:04,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 03:59:04,986 INFO L321 Elim1Store]: treesize reduction 113, result has 6.6 percent of original size [2023-08-30 03:59:04,987 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 498 treesize of output 867 [2023-08-30 03:59:05,006 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 104 treesize of output 98 [2023-08-30 03:59:05,236 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 15 treesize of output 9 [2023-08-30 03:59:05,341 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 15 treesize of output 9 [2023-08-30 03:59:05,502 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 721 treesize of output 643 [2023-08-30 03:59:05,771 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 82 treesize of output 34 [2023-08-30 03:59:05,860 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 15 treesize of output 9 [2023-08-30 03:59:06,493 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 1554 treesize of output 1074 [2023-08-30 03:59:07,235 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:59:07,235 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:59:07,235 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:59:07,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1072304043] [2023-08-30 03:59:07,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1072304043] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:59:07,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:59:07,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 03:59:07,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863141146] [2023-08-30 03:59:07,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:59:07,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 03:59:07,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:59:07,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 03:59:07,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 03:59:09,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 475 [2023-08-30 03:59:09,147 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 52 transitions, 156 flow. Second operand has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:59:09,147 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:59:09,147 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 475 [2023-08-30 03:59:09,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:59:11,007 INFO L130 PetriNetUnfolder]: 1391/2212 cut-off events. [2023-08-30 03:59:11,007 INFO L131 PetriNetUnfolder]: For 47/47 co-relation queries the response was YES. [2023-08-30 03:59:11,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4666 conditions, 2212 events. 1391/2212 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 10642 event pairs, 1165 based on Foata normal form. 0/1172 useless extension candidates. Maximal degree in co-relation 4610. Up to 2154 conditions per place. [2023-08-30 03:59:11,015 INFO L137 encePairwiseOnDemand]: 470/475 looper letters, 49 selfloop transitions, 5 changer transitions 0/55 dead transitions. [2023-08-30 03:59:11,015 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 55 transitions, 280 flow [2023-08-30 03:59:11,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 03:59:11,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 03:59:11,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 776 transitions. [2023-08-30 03:59:11,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40842105263157896 [2023-08-30 03:59:11,019 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 776 transitions. [2023-08-30 03:59:11,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 776 transitions. [2023-08-30 03:59:11,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:59:11,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 776 transitions. [2023-08-30 03:59:11,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 194.0) internal successors, (776), 4 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:59:11,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 475.0) internal successors, (2375), 5 states have internal predecessors, (2375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:59:11,024 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 475.0) internal successors, (2375), 5 states have internal predecessors, (2375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:59:11,024 INFO L175 Difference]: Start difference. First operand has 54 places, 52 transitions, 156 flow. Second operand 4 states and 776 transitions. [2023-08-30 03:59:11,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 55 transitions, 280 flow [2023-08-30 03:59:11,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 55 transitions, 260 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 03:59:11,026 INFO L231 Difference]: Finished difference. Result has 56 places, 55 transitions, 179 flow [2023-08-30 03:59:11,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=179, PETRI_PLACES=56, PETRI_TRANSITIONS=55} [2023-08-30 03:59:11,026 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -12 predicate places. [2023-08-30 03:59:11,027 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 55 transitions, 179 flow [2023-08-30 03:59:11,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:59:11,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:59:11,027 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 03:59:11,043 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-08-30 03:59:11,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:59:11,234 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-08-30 03:59:11,235 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:59:11,235 INFO L85 PathProgramCache]: Analyzing trace with hash 748485, now seen corresponding path program 1 times [2023-08-30 03:59:11,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:59:11,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [429512605] [2023-08-30 03:59:11,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:59:11,235 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:59:11,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:59:11,236 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 03:59:11,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-08-30 03:59:11,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:59:11,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 31 conjunts are in the unsatisfiable core [2023-08-30 03:59:11,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:59:11,405 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 [2023-08-30 03:59:11,414 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 [2023-08-30 03:59:11,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:59:11,441 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:59:11,441 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:59:11,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [429512605] [2023-08-30 03:59:11,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [429512605] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:59:11,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:59:11,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 03:59:11,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622968655] [2023-08-30 03:59:11,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:59:11,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 03:59:11,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:59:11,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 03:59:11,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 03:59:11,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 475 [2023-08-30 03:59:11,835 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 55 transitions, 179 flow. Second operand has 4 states, 4 states have (on average 187.75) internal successors, (751), 4 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:59:11,835 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:59:11,836 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 475 [2023-08-30 03:59:11,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:59:13,904 INFO L130 PetriNetUnfolder]: 1391/2214 cut-off events. [2023-08-30 03:59:13,904 INFO L131 PetriNetUnfolder]: For 54/54 co-relation queries the response was YES. [2023-08-30 03:59:13,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4681 conditions, 2214 events. 1391/2214 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 10630 event pairs, 1165 based on Foata normal form. 0/1173 useless extension candidates. Maximal degree in co-relation 4632. Up to 2155 conditions per place. [2023-08-30 03:59:13,911 INFO L137 encePairwiseOnDemand]: 470/475 looper letters, 52 selfloop transitions, 5 changer transitions 0/58 dead transitions. [2023-08-30 03:59:13,911 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 58 transitions, 313 flow [2023-08-30 03:59:13,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 03:59:13,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 03:59:13,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 803 transitions. [2023-08-30 03:59:13,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4226315789473684 [2023-08-30 03:59:13,914 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 803 transitions. [2023-08-30 03:59:13,914 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 803 transitions. [2023-08-30 03:59:13,915 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:59:13,915 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 803 transitions. [2023-08-30 03:59:13,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 200.75) internal successors, (803), 4 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:59:13,918 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 475.0) internal successors, (2375), 5 states have internal predecessors, (2375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:59:13,919 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 475.0) internal successors, (2375), 5 states have internal predecessors, (2375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:59:13,919 INFO L175 Difference]: Start difference. First operand has 56 places, 55 transitions, 179 flow. Second operand 4 states and 803 transitions. [2023-08-30 03:59:13,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 58 transitions, 313 flow [2023-08-30 03:59:13,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 58 transitions, 300 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-30 03:59:13,923 INFO L231 Difference]: Finished difference. Result has 59 places, 56 transitions, 194 flow [2023-08-30 03:59:13,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=194, PETRI_PLACES=59, PETRI_TRANSITIONS=56} [2023-08-30 03:59:13,925 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -9 predicate places. [2023-08-30 03:59:13,925 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 56 transitions, 194 flow [2023-08-30 03:59:13,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 187.75) internal successors, (751), 4 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:59:13,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:59:13,925 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 03:59:13,936 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-08-30 03:59:14,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:59:14,136 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-08-30 03:59:14,136 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:59:14,137 INFO L85 PathProgramCache]: Analyzing trace with hash 23203923, now seen corresponding path program 1 times [2023-08-30 03:59:14,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:59:14,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [640224804] [2023-08-30 03:59:14,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:59:14,137 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:59:14,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:59:14,138 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 03:59:14,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-08-30 03:59:14,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:59:14,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-30 03:59:14,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:59:14,498 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:59:14,498 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:59:14,498 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:59:14,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [640224804] [2023-08-30 03:59:14,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [640224804] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:59:14,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:59:14,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 03:59:14,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486085083] [2023-08-30 03:59:14,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:59:14,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 03:59:14,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:59:14,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 03:59:14,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 03:59:14,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 475 [2023-08-30 03:59:14,851 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 56 transitions, 194 flow. Second operand has 4 states, 4 states have (on average 197.0) internal successors, (788), 4 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:59:14,851 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:59:14,851 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 475 [2023-08-30 03:59:14,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:59:16,223 INFO L130 PetriNetUnfolder]: 1391/2213 cut-off events. [2023-08-30 03:59:16,224 INFO L131 PetriNetUnfolder]: For 54/54 co-relation queries the response was YES. [2023-08-30 03:59:16,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4681 conditions, 2213 events. 1391/2213 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 10631 event pairs, 1165 based on Foata normal form. 1/1175 useless extension candidates. Maximal degree in co-relation 4645. Up to 2155 conditions per place. [2023-08-30 03:59:16,235 INFO L137 encePairwiseOnDemand]: 472/475 looper letters, 53 selfloop transitions, 3 changer transitions 0/57 dead transitions. [2023-08-30 03:59:16,235 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 57 transitions, 310 flow [2023-08-30 03:59:16,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:59:16,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:59:16,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 640 transitions. [2023-08-30 03:59:16,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44912280701754387 [2023-08-30 03:59:16,238 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 640 transitions. [2023-08-30 03:59:16,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 640 transitions. [2023-08-30 03:59:16,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:59:16,238 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 640 transitions. [2023-08-30 03:59:16,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 213.33333333333334) internal successors, (640), 3 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:59:16,241 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 475.0) internal successors, (1900), 4 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:59:16,241 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 475.0) internal successors, (1900), 4 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:59:16,241 INFO L175 Difference]: Start difference. First operand has 59 places, 56 transitions, 194 flow. Second operand 3 states and 640 transitions. [2023-08-30 03:59:16,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 57 transitions, 310 flow [2023-08-30 03:59:16,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 57 transitions, 302 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-30 03:59:16,244 INFO L231 Difference]: Finished difference. Result has 60 places, 56 transitions, 197 flow [2023-08-30 03:59:16,244 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=197, PETRI_PLACES=60, PETRI_TRANSITIONS=56} [2023-08-30 03:59:16,246 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -8 predicate places. [2023-08-30 03:59:16,246 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 56 transitions, 197 flow [2023-08-30 03:59:16,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 197.0) internal successors, (788), 4 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:59:16,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:59:16,247 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 03:59:16,259 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-08-30 03:59:16,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:59:16,458 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-08-30 03:59:16,458 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:59:16,458 INFO L85 PathProgramCache]: Analyzing trace with hash 23201175, now seen corresponding path program 1 times [2023-08-30 03:59:16,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:59:16,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1225591192] [2023-08-30 03:59:16,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:59:16,459 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:59:16,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:59:16,460 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 03:59:16,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-08-30 03:59:16,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:59:16,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-30 03:59:16,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:59:16,548 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:59:16,548 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 03:59:16,549 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:59:16,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1225591192] [2023-08-30 03:59:16,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1225591192] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:59:16,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:59:16,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 03:59:16,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075910907] [2023-08-30 03:59:16,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:59:16,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:59:16,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:59:16,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:59:16,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:59:16,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 475 [2023-08-30 03:59:16,568 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 56 transitions, 197 flow. Second operand has 3 states, 3 states have (on average 203.33333333333334) internal successors, (610), 3 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:59:16,569 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:59:16,569 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 475 [2023-08-30 03:59:16,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:59:17,673 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 [] [2023-08-30 03:59:18,757 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 [] [2023-08-30 03:59:19,256 INFO L130 PetriNetUnfolder]: 1388/2211 cut-off events. [2023-08-30 03:59:19,257 INFO L131 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2023-08-30 03:59:19,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4675 conditions, 2211 events. 1388/2211 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 10624 event pairs, 1165 based on Foata normal form. 1/1174 useless extension candidates. Maximal degree in co-relation 4642. Up to 2153 conditions per place. [2023-08-30 03:59:19,263 INFO L137 encePairwiseOnDemand]: 472/475 looper letters, 49 selfloop transitions, 4 changer transitions 0/54 dead transitions. [2023-08-30 03:59:19,263 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 54 transitions, 290 flow [2023-08-30 03:59:19,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:59:19,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:59:19,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 657 transitions. [2023-08-30 03:59:19,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4610526315789474 [2023-08-30 03:59:19,266 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 657 transitions. [2023-08-30 03:59:19,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 657 transitions. [2023-08-30 03:59:19,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:59:19,266 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 657 transitions. [2023-08-30 03:59:19,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 219.0) internal successors, (657), 3 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:59:19,268 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 475.0) internal successors, (1900), 4 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:59:19,269 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 475.0) internal successors, (1900), 4 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:59:19,269 INFO L175 Difference]: Start difference. First operand has 60 places, 56 transitions, 197 flow. Second operand 3 states and 657 transitions. [2023-08-30 03:59:19,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 54 transitions, 290 flow [2023-08-30 03:59:19,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 54 transitions, 286 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 03:59:19,270 INFO L231 Difference]: Finished difference. Result has 60 places, 54 transitions, 188 flow [2023-08-30 03:59:19,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=58, 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=188, PETRI_PLACES=60, PETRI_TRANSITIONS=54} [2023-08-30 03:59:19,271 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -8 predicate places. [2023-08-30 03:59:19,271 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 54 transitions, 188 flow [2023-08-30 03:59:19,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 203.33333333333334) internal successors, (610), 3 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:59:19,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:59:19,271 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 03:59:19,281 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-08-30 03:59:19,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:59:19,481 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-08-30 03:59:19,481 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:59:19,482 INFO L85 PathProgramCache]: Analyzing trace with hash 719319784, now seen corresponding path program 1 times [2023-08-30 03:59:19,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:59:19,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2135495344] [2023-08-30 03:59:19,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:59:19,482 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:59:19,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:59:19,483 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 03:59:19,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-08-30 03:59:19,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:59:19,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 03:59:19,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:59:19,654 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:59:19,655 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 03:59:19,671 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:59:19,671 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:59:19,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2135495344] [2023-08-30 03:59:19,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2135495344] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 03:59:19,671 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 03:59:19,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-08-30 03:59:19,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864793751] [2023-08-30 03:59:19,672 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 03:59:19,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 03:59:19,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:59:19,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 03:59:19,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-30 03:59:19,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 475 [2023-08-30 03:59:19,728 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 54 transitions, 188 flow. Second operand has 6 states, 6 states have (on average 202.33333333333334) internal successors, (1214), 6 states have internal predecessors, (1214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:59:19,728 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:59:19,728 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 475 [2023-08-30 03:59:19,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:59:23,124 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 03:59:24,806 INFO L130 PetriNetUnfolder]: 1389/2220 cut-off events. [2023-08-30 03:59:24,806 INFO L131 PetriNetUnfolder]: For 61/61 co-relation queries the response was YES. [2023-08-30 03:59:24,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4710 conditions, 2220 events. 1389/2220 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 10661 event pairs, 1165 based on Foata normal form. 6/1188 useless extension candidates. Maximal degree in co-relation 4648. Up to 2152 conditions per place. [2023-08-30 03:59:24,812 INFO L137 encePairwiseOnDemand]: 471/475 looper letters, 51 selfloop transitions, 8 changer transitions 0/60 dead transitions. [2023-08-30 03:59:24,812 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 60 transitions, 342 flow [2023-08-30 03:59:24,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 03:59:24,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 03:59:24,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1265 transitions. [2023-08-30 03:59:24,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.443859649122807 [2023-08-30 03:59:24,815 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1265 transitions. [2023-08-30 03:59:24,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1265 transitions. [2023-08-30 03:59:24,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:59:24,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1265 transitions. [2023-08-30 03:59:24,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 210.83333333333334) internal successors, (1265), 6 states have internal predecessors, (1265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:59:24,821 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 475.0) internal successors, (3325), 7 states have internal predecessors, (3325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:59:24,822 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 475.0) internal successors, (3325), 7 states have internal predecessors, (3325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:59:24,822 INFO L175 Difference]: Start difference. First operand has 60 places, 54 transitions, 188 flow. Second operand 6 states and 1265 transitions. [2023-08-30 03:59:24,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 60 transitions, 342 flow [2023-08-30 03:59:24,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 60 transitions, 329 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 03:59:24,823 INFO L231 Difference]: Finished difference. Result has 67 places, 58 transitions, 241 flow [2023-08-30 03:59:24,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=241, PETRI_PLACES=67, PETRI_TRANSITIONS=58} [2023-08-30 03:59:24,824 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -1 predicate places. [2023-08-30 03:59:24,824 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 58 transitions, 241 flow [2023-08-30 03:59:24,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 202.33333333333334) internal successors, (1214), 6 states have internal predecessors, (1214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:59:24,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:59:24,825 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2023-08-30 03:59:24,834 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-08-30 03:59:25,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:59:25,034 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-08-30 03:59:25,034 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:59:25,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1746620887, now seen corresponding path program 2 times [2023-08-30 03:59:25,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:59:25,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1391838760] [2023-08-30 03:59:25,035 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 03:59:25,035 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:59:25,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:59:25,036 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 03:59:25,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-08-30 03:59:25,442 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 03:59:25,442 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 03:59:25,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 742 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 03:59:25,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 03:59:25,501 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:59:25,502 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 03:59:25,573 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:59:25,573 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 03:59:25,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1391838760] [2023-08-30 03:59:25,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1391838760] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 03:59:25,573 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 03:59:25,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-08-30 03:59:25,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928769859] [2023-08-30 03:59:25,574 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 03:59:25,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 03:59:25,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 03:59:25,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 03:59:25,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-08-30 03:59:25,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 475 [2023-08-30 03:59:25,780 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 58 transitions, 241 flow. Second operand has 12 states, 12 states have (on average 202.16666666666666) internal successors, (2426), 12 states have internal predecessors, (2426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:59:25,780 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:59:25,780 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 475 [2023-08-30 03:59:25,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:59:28,818 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 03:59:30,872 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 03:59:33,852 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 03:59:34,885 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 03:59:36,405 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 03:59:37,416 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 03:59:39,456 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 03:59:40,658 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 03:59:48,847 INFO L130 PetriNetUnfolder]: 1389/2238 cut-off events. [2023-08-30 03:59:48,848 INFO L131 PetriNetUnfolder]: For 211/211 co-relation queries the response was YES. [2023-08-30 03:59:48,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4819 conditions, 2238 events. 1389/2238 cut-off events. For 211/211 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 10790 event pairs, 1165 based on Foata normal form. 12/1212 useless extension candidates. Maximal degree in co-relation 4683. Up to 2152 conditions per place. [2023-08-30 03:59:48,854 INFO L137 encePairwiseOnDemand]: 471/475 looper letters, 57 selfloop transitions, 14 changer transitions 0/72 dead transitions. [2023-08-30 03:59:48,854 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 72 transitions, 503 flow [2023-08-30 03:59:48,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 03:59:48,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 03:59:48,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2486 transitions. [2023-08-30 03:59:48,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.436140350877193 [2023-08-30 03:59:48,864 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2486 transitions. [2023-08-30 03:59:48,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2486 transitions. [2023-08-30 03:59:48,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:59:48,865 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2486 transitions. [2023-08-30 03:59:48,868 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 207.16666666666666) internal successors, (2486), 12 states have internal predecessors, (2486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:59:48,873 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 475.0) internal successors, (6175), 13 states have internal predecessors, (6175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:59:48,874 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 475.0) internal successors, (6175), 13 states have internal predecessors, (6175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:59:48,874 INFO L175 Difference]: Start difference. First operand has 67 places, 58 transitions, 241 flow. Second operand 12 states and 2486 transitions. [2023-08-30 03:59:48,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 72 transitions, 503 flow [2023-08-30 03:59:48,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 72 transitions, 499 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 03:59:48,876 INFO L231 Difference]: Finished difference. Result has 84 places, 65 transitions, 357 flow [2023-08-30 03:59:48,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=357, PETRI_PLACES=84, PETRI_TRANSITIONS=65} [2023-08-30 03:59:48,877 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 16 predicate places. [2023-08-30 03:59:48,877 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 65 transitions, 357 flow [2023-08-30 03:59:48,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 202.16666666666666) internal successors, (2426), 12 states have internal predecessors, (2426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:59:48,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:59:48,878 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1] [2023-08-30 03:59:48,893 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-08-30 03:59:49,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:59:49,084 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-08-30 03:59:49,084 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:59:49,084 INFO L85 PathProgramCache]: Analyzing trace with hash 433457207, now seen corresponding path program 3 times [2023-08-30 03:59:49,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 03:59:49,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1290843766] [2023-08-30 03:59:49,085 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 03:59:49,085 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 03:59:49,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 03:59:49,086 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 03:59:49,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-08-30 04:00:01,032 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-08-30 04:00:01,032 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 04:00:01,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 1732 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-30 04:00:01,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 04:00:01,226 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 1 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:00:01,226 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 04:00:01,570 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 1 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:00:01,570 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 04:00:01,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1290843766] [2023-08-30 04:00:01,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1290843766] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 04:00:01,571 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 04:00:01,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2023-08-30 04:00:01,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623527434] [2023-08-30 04:00:01,571 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 04:00:01,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-30 04:00:01,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 04:00:01,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-30 04:00:01,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2023-08-30 04:00:02,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 475 [2023-08-30 04:00:02,306 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 65 transitions, 357 flow. Second operand has 24 states, 24 states have (on average 202.08333333333334) internal successors, (4850), 24 states have internal predecessors, (4850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:00:02,306 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:00:02,306 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 475 [2023-08-30 04:00:02,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:00:05,211 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:00:07,538 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:00:09,003 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:00:13,367 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:00:15,049 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:00:17,519 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:00:23,606 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:00:24,887 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:00:28,809 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:00:30,249 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:00:32,146 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:00:33,912 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:00:35,907 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:00:37,129 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:00:38,261 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:00:39,773 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:00:41,491 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:00:43,043 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:00:44,568 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:00:46,761 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:00:48,107 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:00:49,368 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:00:50,940 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:00:52,221 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:00:53,870 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:00:56,133 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:00:59,383 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:01:00,693 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:01:01,754 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:01:04,074 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:01:06,787 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:01:10,936 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:01:13,450 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:01:16,281 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:01:17,624 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:01:19,207 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:01:25,333 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:01:27,789 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:01:29,195 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:01:31,124 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:01:32,133 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:01:36,552 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:01:39,533 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:01:40,867 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:01:42,526 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 [] [2023-08-30 04:01:52,046 INFO L130 PetriNetUnfolder]: 1389/2274 cut-off events. [2023-08-30 04:01:52,047 INFO L131 PetriNetUnfolder]: For 1582/1582 co-relation queries the response was YES. [2023-08-30 04:01:52,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5098 conditions, 2274 events. 1389/2274 cut-off events. For 1582/1582 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 11003 event pairs, 1165 based on Foata normal form. 24/1260 useless extension candidates. Maximal degree in co-relation 4767. Up to 2152 conditions per place. [2023-08-30 04:01:52,054 INFO L137 encePairwiseOnDemand]: 471/475 looper letters, 69 selfloop transitions, 26 changer transitions 0/96 dead transitions. [2023-08-30 04:01:52,054 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 96 transitions, 906 flow [2023-08-30 04:01:52,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-30 04:01:52,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-30 04:01:52,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4928 transitions. [2023-08-30 04:01:52,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.432280701754386 [2023-08-30 04:01:52,067 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4928 transitions. [2023-08-30 04:01:52,067 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4928 transitions. [2023-08-30 04:01:52,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 04:01:52,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4928 transitions. [2023-08-30 04:01:52,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 205.33333333333334) internal successors, (4928), 24 states have internal predecessors, (4928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:01:52,120 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 475.0) internal successors, (11875), 25 states have internal predecessors, (11875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:01:52,123 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 475.0) internal successors, (11875), 25 states have internal predecessors, (11875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:01:52,123 INFO L175 Difference]: Start difference. First operand has 84 places, 65 transitions, 357 flow. Second operand 24 states and 4928 transitions. [2023-08-30 04:01:52,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 96 transitions, 906 flow [2023-08-30 04:01:52,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 96 transitions, 850 flow, removed 13 selfloop flow, removed 4 redundant places. [2023-08-30 04:01:52,127 INFO L231 Difference]: Finished difference. Result has 116 places, 78 transitions, 561 flow [2023-08-30 04:01:52,127 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=561, PETRI_PLACES=116, PETRI_TRANSITIONS=78} [2023-08-30 04:01:52,128 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 48 predicate places. [2023-08-30 04:01:52,128 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 78 transitions, 561 flow [2023-08-30 04:01:52,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 202.08333333333334) internal successors, (4850), 24 states have internal predecessors, (4850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:01:52,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 04:01:52,129 INFO L208 CegarLoopForPetriNet]: trace histogram [22, 1, 1, 1, 1] [2023-08-30 04:01:52,172 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-08-30 04:01:52,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 04:01:52,344 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [fErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, fErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 48 more)] === [2023-08-30 04:01:52,344 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 04:01:52,344 INFO L85 PathProgramCache]: Analyzing trace with hash 520264952, now seen corresponding path program 1 times [2023-08-30 04:01:52,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 04:01:52,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [774755159] [2023-08-30 04:01:52,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 04:01:52,345 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 04:01:52,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 04:01:52,347 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 04:01:52,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-08-30 04:01:56,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 04:01:57,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 3700 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-30 04:01:57,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 04:01:57,459 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 1 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:01:57,459 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 04:01:58,429 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 1 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 04:01:58,430 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 04:01:58,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [774755159] [2023-08-30 04:01:58,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [774755159] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 04:01:58,430 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 04:01:58,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 48 [2023-08-30 04:01:58,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246010282] [2023-08-30 04:01:58,430 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 04:01:58,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-08-30 04:01:58,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 04:01:58,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-08-30 04:01:58,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=502, Invalid=1754, Unknown=0, NotChecked=0, Total=2256 [2023-08-30 04:02:00,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 475 [2023-08-30 04:02:00,281 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 78 transitions, 561 flow. Second operand has 48 states, 48 states have (on average 202.04166666666666) internal successors, (9698), 48 states have internal predecessors, (9698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 04:02:00,281 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 04:02:00,281 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 475 [2023-08-30 04:02:00,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 04:02:05,390 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:02:06,655 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:02:07,837 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:02:08,915 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:02:10,009 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:02:13,529 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:02:15,398 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:02:16,672 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:02:18,168 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:02:19,621 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:02:21,499 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:02:22,796 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:02:24,425 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:02:28,531 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:02:29,540 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:02:34,545 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:02:38,568 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:02:41,986 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:02:43,737 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:02:51,233 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:02:53,967 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:02:56,404 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 04:03:01,408 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15