./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/ldv-races/race-2_4-container_of.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/ldv-races/race-2_4-container_of.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 da1ee67f9d4a34134c6c682362ba77c4c77858b09ffe0620532fe4446dd160da --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 20:52:32,270 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 20:52:32,272 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 20:52:32,307 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 20:52:32,309 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 20:52:32,312 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 20:52:32,314 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 20:52:32,317 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 20:52:32,319 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 20:52:32,323 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 20:52:32,324 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 20:52:32,325 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 20:52:32,326 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 20:52:32,328 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 20:52:32,329 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 20:52:32,332 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 20:52:32,335 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 20:52:32,336 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 20:52:32,337 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 20:52:32,346 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 20:52:32,348 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 20:52:32,348 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 20:52:32,349 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 20:52:32,350 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 20:52:32,358 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 20:52:32,358 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 20:52:32,358 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 20:52:32,360 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 20:52:32,361 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 20:52:32,361 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 20:52:32,362 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 20:52:32,367 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 20:52:32,368 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 20:52:32,369 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 20:52:32,370 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 20:52:32,370 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 20:52:32,371 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 20:52:32,371 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 20:52:32,372 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 20:52:32,372 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 20:52:32,373 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 20:52:32,374 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-29 20:52:32,407 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 20:52:32,408 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 20:52:32,409 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 20:52:32,409 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 20:52:32,410 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 20:52:32,410 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 20:52:32,411 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 20:52:32,411 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 20:52:32,411 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 20:52:32,411 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 20:52:32,412 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 20:52:32,412 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 20:52:32,412 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 20:52:32,412 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 20:52:32,413 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 20:52:32,413 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-29 20:52:32,413 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-29 20:52:32,413 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-29 20:52:32,413 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 20:52:32,414 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-29 20:52:32,414 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 20:52:32,418 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 20:52:32,418 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 20:52:32,419 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 20:52:32,420 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 20:52:32,420 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 20:52:32,421 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 20:52:32,421 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 20:52:32,421 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 20:52:32,421 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 20:52:32,422 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 20:52:32,422 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 20:52:32,422 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 20:52:32,422 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 20:52:32,423 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da1ee67f9d4a34134c6c682362ba77c4c77858b09ffe0620532fe4446dd160da Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 20:52:32,678 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 20:52:32,696 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 20:52:32,698 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 20:52:32,699 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 20:52:32,699 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 20:52:32,701 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-2_4-container_of.i [2023-08-29 20:52:33,890 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 20:52:34,245 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 20:52:34,245 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_4-container_of.i [2023-08-29 20:52:34,268 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5320a6ec4/74ba1cdc9509450b88ea708097309250/FLAGca8985489 [2023-08-29 20:52:34,280 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5320a6ec4/74ba1cdc9509450b88ea708097309250 [2023-08-29 20:52:34,282 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 20:52:34,283 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 20:52:34,284 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 20:52:34,284 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 20:52:34,288 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 20:52:34,289 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 08:52:34" (1/1) ... [2023-08-29 20:52:34,292 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35fd7ce2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:52:34, skipping insertion in model container [2023-08-29 20:52:34,292 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 08:52:34" (1/1) ... [2023-08-29 20:52:34,298 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 20:52:34,362 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 20:52:34,462 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-29 20:52:34,824 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_4-container_of.i[75002,75015] [2023-08-29 20:52:34,863 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 20:52:34,873 ERROR L324 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-08-29 20:52:34,876 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7640cfc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:52:34, skipping insertion in model container [2023-08-29 20:52:34,876 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 20:52:34,876 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-08-29 20:52:34,878 INFO L158 Benchmark]: Toolchain (without parser) took 594.14ms. Allocated memory is still 83.9MB. Free memory was 58.3MB in the beginning and 39.9MB in the end (delta: 18.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-08-29 20:52:34,878 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 60.8MB. Free memory was 38.4MB in the beginning and 38.3MB in the end (delta: 57.3kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 20:52:34,880 INFO L158 Benchmark]: CACSL2BoogieTranslator took 592.48ms. Allocated memory is still 83.9MB. Free memory was 58.3MB in the beginning and 39.9MB in the end (delta: 18.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-08-29 20:52:34,881 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 60.8MB. Free memory was 38.4MB in the beginning and 38.3MB in the end (delta: 57.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 592.48ms. Allocated memory is still 83.9MB. Free memory was 58.3MB in the beginning and 39.9MB in the end (delta: 18.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1691]: 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/ldv-races/race-2_4-container_of.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 da1ee67f9d4a34134c6c682362ba77c4c77858b09ffe0620532fe4446dd160da --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 20:52:36,565 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 20:52:36,567 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 20:52:36,611 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 20:52:36,611 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 20:52:36,614 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 20:52:36,616 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 20:52:36,619 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 20:52:36,621 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 20:52:36,627 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 20:52:36,628 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 20:52:36,630 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 20:52:36,630 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 20:52:36,632 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 20:52:36,634 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 20:52:36,640 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 20:52:36,641 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 20:52:36,641 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 20:52:36,642 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 20:52:36,643 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 20:52:36,644 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 20:52:36,645 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 20:52:36,646 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 20:52:36,646 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 20:52:36,649 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 20:52:36,655 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 20:52:36,655 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 20:52:36,656 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 20:52:36,657 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 20:52:36,658 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 20:52:36,658 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 20:52:36,659 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 20:52:36,660 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 20:52:36,661 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 20:52:36,662 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 20:52:36,663 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 20:52:36,663 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 20:52:36,664 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 20:52:36,664 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 20:52:36,665 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 20:52:36,665 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 20:52:36,667 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-08-29 20:52:36,701 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 20:52:36,702 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 20:52:36,703 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 20:52:36,703 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 20:52:36,704 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 20:52:36,704 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 20:52:36,704 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 20:52:36,705 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 20:52:36,705 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 20:52:36,705 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 20:52:36,706 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 20:52:36,706 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 20:52:36,706 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 20:52:36,706 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 20:52:36,707 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 20:52:36,707 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-29 20:52:36,707 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-29 20:52:36,707 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-29 20:52:36,707 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 20:52:36,708 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-29 20:52:36,708 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-08-29 20:52:36,708 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-08-29 20:52:36,708 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 20:52:36,708 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 20:52:36,709 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 20:52:36,709 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 20:52:36,709 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 20:52:36,709 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 20:52:36,709 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 20:52:36,710 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 20:52:36,710 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-08-29 20:52:36,710 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-08-29 20:52:36,710 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 20:52:36,711 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 20:52:36,711 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 20:52:36,711 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-08-29 20:52:36,711 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 20:52:36,711 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da1ee67f9d4a34134c6c682362ba77c4c77858b09ffe0620532fe4446dd160da Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 20:52:37,027 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 20:52:37,048 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 20:52:37,050 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 20:52:37,051 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 20:52:37,053 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 20:52:37,054 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-2_4-container_of.i [2023-08-29 20:52:38,282 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 20:52:38,590 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 20:52:38,591 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_4-container_of.i [2023-08-29 20:52:38,612 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31c22cfd8/90d41f4894c947588a70cc7c73100e24/FLAGb16423078 [2023-08-29 20:52:38,627 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31c22cfd8/90d41f4894c947588a70cc7c73100e24 [2023-08-29 20:52:38,629 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 20:52:38,631 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 20:52:38,632 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 20:52:38,632 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 20:52:38,635 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 20:52:38,635 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 08:52:38" (1/1) ... [2023-08-29 20:52:38,636 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b136d3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:52:38, skipping insertion in model container [2023-08-29 20:52:38,636 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 08:52:38" (1/1) ... [2023-08-29 20:52:38,642 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 20:52:38,704 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 20:52:38,818 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-29 20:52:39,178 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_4-container_of.i[75002,75015] [2023-08-29 20:52:39,236 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 20:52:39,257 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-08-29 20:52:39,270 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 20:52:39,287 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-29 20:52:39,323 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_4-container_of.i[75002,75015] [2023-08-29 20:52:39,343 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 20:52:39,348 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 20:52:39,357 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-29 20:52:39,389 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-2_4-container_of.i[75002,75015] [2023-08-29 20:52:39,398 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 20:52:39,523 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-29 20:52:39,523 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-29 20:52:39,523 WARN L667 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-08-29 20:52:39,529 INFO L208 MainTranslator]: Completed translation [2023-08-29 20:52:39,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:52:39 WrapperNode [2023-08-29 20:52:39,531 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 20:52:39,532 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 20:52:39,532 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 20:52:39,532 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 20:52:39,538 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:52:39" (1/1) ... [2023-08-29 20:52:39,575 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:52:39" (1/1) ... [2023-08-29 20:52:39,619 INFO L138 Inliner]: procedures = 473, calls = 63, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 142 [2023-08-29 20:52:39,620 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 20:52:39,621 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 20:52:39,621 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 20:52:39,621 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 20:52:39,629 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:52:39" (1/1) ... [2023-08-29 20:52:39,630 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:52:39" (1/1) ... [2023-08-29 20:52:39,647 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:52:39" (1/1) ... [2023-08-29 20:52:39,647 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:52:39" (1/1) ... [2023-08-29 20:52:39,662 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:52:39" (1/1) ... [2023-08-29 20:52:39,664 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:52:39" (1/1) ... [2023-08-29 20:52:39,669 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:52:39" (1/1) ... [2023-08-29 20:52:39,671 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:52:39" (1/1) ... [2023-08-29 20:52:39,676 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 20:52:39,677 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 20:52:39,677 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 20:52:39,678 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 20:52:39,678 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:52:39" (1/1) ... [2023-08-29 20:52:39,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 20:52:39,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 20:52:39,712 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-29 20:52:39,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-29 20:52:39,755 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-29 20:52:39,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 20:52:39,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-08-29 20:52:39,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-08-29 20:52:39,756 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-29 20:52:39,756 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-29 20:52:39,756 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 20:52:39,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-29 20:52:39,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 20:52:39,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 20:52:39,757 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-08-29 20:52:39,757 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2023-08-29 20:52:39,757 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2023-08-29 20:52:39,758 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 20:52:39,758 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-08-29 20:52:39,760 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-29 20:52:40,101 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 20:52:40,103 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 20:52:40,617 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 20:52:40,666 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 20:52:40,666 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-29 20:52:40,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:52:40 BoogieIcfgContainer [2023-08-29 20:52:40,668 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 20:52:40,670 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 20:52:40,670 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 20:52:40,673 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 20:52:40,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 08:52:38" (1/3) ... [2023-08-29 20:52:40,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bdc131d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 08:52:40, skipping insertion in model container [2023-08-29 20:52:40,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:52:39" (2/3) ... [2023-08-29 20:52:40,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bdc131d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 08:52:40, skipping insertion in model container [2023-08-29 20:52:40,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:52:40" (3/3) ... [2023-08-29 20:52:40,676 INFO L112 eAbstractionObserver]: Analyzing ICFG race-2_4-container_of.i [2023-08-29 20:52:40,690 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 20:52:40,690 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 49 error locations. [2023-08-29 20:52:40,690 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 20:52:40,763 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-29 20:52:40,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 209 places, 209 transitions, 434 flow [2023-08-29 20:52:40,923 INFO L130 PetriNetUnfolder]: 8/273 cut-off events. [2023-08-29 20:52:40,923 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-29 20:52:40,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 282 conditions, 273 events. 8/273 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 800 event pairs, 0 based on Foata normal form. 0/185 useless extension candidates. Maximal degree in co-relation 144. Up to 4 conditions per place. [2023-08-29 20:52:40,929 INFO L82 GeneralOperation]: Start removeDead. Operand has 209 places, 209 transitions, 434 flow [2023-08-29 20:52:40,939 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 207 places, 207 transitions, 426 flow [2023-08-29 20:52:40,950 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 20:52:40,964 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 207 places, 207 transitions, 426 flow [2023-08-29 20:52:40,977 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 207 places, 207 transitions, 426 flow [2023-08-29 20:52:40,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 207 places, 207 transitions, 426 flow [2023-08-29 20:52:41,073 INFO L130 PetriNetUnfolder]: 8/273 cut-off events. [2023-08-29 20:52:41,073 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-29 20:52:41,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 282 conditions, 273 events. 8/273 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 799 event pairs, 0 based on Foata normal form. 0/185 useless extension candidates. Maximal degree in co-relation 144. Up to 4 conditions per place. [2023-08-29 20:52:41,078 INFO L119 LiptonReduction]: Number of co-enabled transitions 6612 [2023-08-29 20:53:54,933 WARN L222 SmtUtils]: Spent 8.72s on a formula simplification that was a NOOP. DAG size: 202 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 20:54:03,744 WARN L222 SmtUtils]: Spent 8.81s on a formula simplification that was a NOOP. DAG size: 202 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 20:55:44,686 WARN L222 SmtUtils]: Spent 1.68m on a formula simplification. DAG size of input: 257 DAG size of output: 253 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 20:56:35,218 WARN L222 SmtUtils]: Spent 50.53s on a formula simplification that was a NOOP. DAG size: 245 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 20:58:21,870 WARN L222 SmtUtils]: Spent 1.78m on a formula simplification. DAG size of input: 257 DAG size of output: 253 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 20:59:14,048 WARN L222 SmtUtils]: Spent 52.18s on a formula simplification that was a NOOP. DAG size: 245 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 20:59:24,494 WARN L222 SmtUtils]: Spent 10.16s on a formula simplification that was a NOOP. DAG size: 214 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 20:59:34,103 WARN L222 SmtUtils]: Spent 9.61s on a formula simplification that was a NOOP. DAG size: 212 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 20:59:46,082 WARN L222 SmtUtils]: Spent 11.98s on a formula simplification that was a NOOP. DAG size: 214 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 20:59:57,768 WARN L222 SmtUtils]: Spent 11.69s on a formula simplification that was a NOOP. DAG size: 212 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 20:59:57,773 INFO L134 LiptonReduction]: Checked pairs total: 33684 [2023-08-29 20:59:57,773 INFO L136 LiptonReduction]: Total number of compositions: 220 [2023-08-29 20:59:57,785 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 20:59:57,789 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;@6c9eb0ca, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 20:59:57,790 INFO L358 AbstractCegarLoop]: Starting to check reachability of 63 error locations. [2023-08-29 20:59:57,791 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-29 20:59:57,791 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:59:57,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:59:57,792 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 20:59:57,792 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-08-29 20:59:57,796 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:59:57,797 INFO L85 PathProgramCache]: Analyzing trace with hash 759, now seen corresponding path program 1 times [2023-08-29 20:59:57,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 20:59:57,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1665457085] [2023-08-29 20:59:57,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:59:57,809 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 20:59:57,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 20:59:57,815 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 20:59:57,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-08-29 20:59:57,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:59:57,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2023-08-29 20:59:57,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 20:59:57,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:59:57,932 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 20:59:57,933 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 20:59:57,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1665457085] [2023-08-29 20:59:57,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1665457085] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:59:57,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:59:57,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 20:59:57,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132401242] [2023-08-29 20:59:57,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:59:57,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 20:59:57,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 20:59:57,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 20:59:57,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 20:59:57,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 429 [2023-08-29 20:59:57,972 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 91 transitions, 194 flow. Second operand has 2 states, 2 states have (on average 191.5) internal successors, (383), 2 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:59:57,972 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:59:57,972 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 429 [2023-08-29 20:59:57,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:59:59,195 INFO L130 PetriNetUnfolder]: 661/1321 cut-off events. [2023-08-29 20:59:59,195 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-29 20:59:59,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2502 conditions, 1321 events. 661/1321 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 8882 event pairs, 660 based on Foata normal form. 0/1006 useless extension candidates. Maximal degree in co-relation 2336. Up to 1163 conditions per place. [2023-08-29 20:59:59,209 INFO L137 encePairwiseOnDemand]: 414/429 looper letters, 51 selfloop transitions, 0 changer transitions 0/76 dead transitions. [2023-08-29 20:59:59,209 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 76 transitions, 266 flow [2023-08-29 20:59:59,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 20:59:59,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 20:59:59,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 448 transitions. [2023-08-29 20:59:59,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5221445221445221 [2023-08-29 20:59:59,231 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 448 transitions. [2023-08-29 20:59:59,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 448 transitions. [2023-08-29 20:59:59,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:59:59,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 448 transitions. [2023-08-29 20:59:59,244 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 224.0) internal successors, (448), 2 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:59:59,248 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 429.0) internal successors, (1287), 3 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:59:59,249 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 429.0) internal successors, (1287), 3 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:59:59,251 INFO L175 Difference]: Start difference. First operand has 94 places, 91 transitions, 194 flow. Second operand 2 states and 448 transitions. [2023-08-29 20:59:59,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 76 transitions, 266 flow [2023-08-29 20:59:59,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 76 transitions, 258 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-29 20:59:59,258 INFO L231 Difference]: Finished difference. Result has 78 places, 76 transitions, 156 flow [2023-08-29 20:59:59,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=156, PETRI_PLACES=78, PETRI_TRANSITIONS=76} [2023-08-29 20:59:59,263 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, -16 predicate places. [2023-08-29 20:59:59,263 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 76 transitions, 156 flow [2023-08-29 20:59:59,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 191.5) internal successors, (383), 2 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:59:59,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:59:59,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-29 20:59:59,279 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-08-29 20:59:59,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 20:59:59,476 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-08-29 20:59:59,477 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:59:59,477 INFO L85 PathProgramCache]: Analyzing trace with hash 24421, now seen corresponding path program 1 times [2023-08-29 20:59:59,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 20:59:59,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1995108554] [2023-08-29 20:59:59,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:59:59,478 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 20:59:59,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 20:59:59,480 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 20:59:59,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-08-29 20:59:59,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:59:59,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-29 20:59:59,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 20:59:59,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:59:59,640 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 20:59:59,641 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 20:59:59,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1995108554] [2023-08-29 20:59:59,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1995108554] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:59:59,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:59:59,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 20:59:59,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576684180] [2023-08-29 20:59:59,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:59:59,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 20:59:59,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 20:59:59,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 20:59:59,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 20:59:59,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 429 [2023-08-29 20:59:59,664 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 76 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 187.66666666666666) internal successors, (563), 3 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:59:59,665 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:59:59,665 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 429 [2023-08-29 20:59:59,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:00:01,698 INFO L130 PetriNetUnfolder]: 660/1320 cut-off events. [2023-08-29 21:00:01,699 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-29 21:00:01,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2490 conditions, 1320 events. 660/1320 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 8471 event pairs, 660 based on Foata normal form. 0/1007 useless extension candidates. Maximal degree in co-relation 2487. Up to 1149 conditions per place. [2023-08-29 21:00:01,707 INFO L137 encePairwiseOnDemand]: 425/429 looper letters, 62 selfloop transitions, 1 changer transitions 1/89 dead transitions. [2023-08-29 21:00:01,707 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 89 transitions, 310 flow [2023-08-29 21:00:01,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:00:01,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:00:01,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 628 transitions. [2023-08-29 21:00:01,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48795648795648794 [2023-08-29 21:00:01,711 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 628 transitions. [2023-08-29 21:00:01,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 628 transitions. [2023-08-29 21:00:01,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:00:01,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 628 transitions. [2023-08-29 21:00:01,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 209.33333333333334) internal successors, (628), 3 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:01,716 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:01,717 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:01,717 INFO L175 Difference]: Start difference. First operand has 78 places, 76 transitions, 156 flow. Second operand 3 states and 628 transitions. [2023-08-29 21:00:01,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 89 transitions, 310 flow [2023-08-29 21:00:01,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 89 transitions, 310 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 21:00:01,720 INFO L231 Difference]: Finished difference. Result has 81 places, 76 transitions, 165 flow [2023-08-29 21:00:01,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=165, PETRI_PLACES=81, PETRI_TRANSITIONS=76} [2023-08-29 21:00:01,721 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, -13 predicate places. [2023-08-29 21:00:01,721 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 76 transitions, 165 flow [2023-08-29 21:00:01,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 187.66666666666666) internal successors, (563), 3 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:01,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:00:01,722 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 21:00:01,744 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-08-29 21:00:01,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:00:01,934 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-08-29 21:00:01,934 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:00:01,934 INFO L85 PathProgramCache]: Analyzing trace with hash 756890, now seen corresponding path program 1 times [2023-08-29 21:00:01,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:00:01,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [655688939] [2023-08-29 21:00:01,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:00:01,935 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:00:01,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:00:01,942 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:00:01,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-08-29 21:00:02,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:00:02,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 21:00:02,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:00:02,079 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-08-29 21:00:02,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:00:02,088 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:00:02,089 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:00:02,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [655688939] [2023-08-29 21:00:02,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [655688939] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:00:02,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:00:02,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 21:00:02,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519178500] [2023-08-29 21:00:02,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:00:02,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:00:02,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:00:02,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:00:02,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:00:02,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 429 [2023-08-29 21:00:02,427 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 76 transitions, 165 flow. Second operand has 3 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:02,427 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:00:02,427 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 429 [2023-08-29 21:00:02,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:00:03,655 INFO L130 PetriNetUnfolder]: 636/1262 cut-off events. [2023-08-29 21:00:03,655 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-29 21:00:03,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2427 conditions, 1262 events. 636/1262 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 8041 event pairs, 588 based on Foata normal form. 0/982 useless extension candidates. Maximal degree in co-relation 2422. Up to 1036 conditions per place. [2023-08-29 21:00:03,663 INFO L137 encePairwiseOnDemand]: 422/429 looper letters, 51 selfloop transitions, 5 changer transitions 0/80 dead transitions. [2023-08-29 21:00:03,663 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 80 transitions, 283 flow [2023-08-29 21:00:03,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:00:03,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:00:03,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 580 transitions. [2023-08-29 21:00:03,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4506604506604507 [2023-08-29 21:00:03,667 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 580 transitions. [2023-08-29 21:00:03,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 580 transitions. [2023-08-29 21:00:03,667 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:00:03,668 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 580 transitions. [2023-08-29 21:00:03,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 193.33333333333334) internal successors, (580), 3 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:03,671 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:03,672 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:03,672 INFO L175 Difference]: Start difference. First operand has 81 places, 76 transitions, 165 flow. Second operand 3 states and 580 transitions. [2023-08-29 21:00:03,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 80 transitions, 283 flow [2023-08-29 21:00:03,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 80 transitions, 282 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 21:00:03,675 INFO L231 Difference]: Finished difference. Result has 80 places, 74 transitions, 168 flow [2023-08-29 21:00:03,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=168, PETRI_PLACES=80, PETRI_TRANSITIONS=74} [2023-08-29 21:00:03,676 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, -14 predicate places. [2023-08-29 21:00:03,676 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 74 transitions, 168 flow [2023-08-29 21:00:03,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:03,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:00:03,676 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 21:00:03,696 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-08-29 21:00:03,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:00:03,897 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-08-29 21:00:03,897 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:00:03,897 INFO L85 PathProgramCache]: Analyzing trace with hash 749812, now seen corresponding path program 1 times [2023-08-29 21:00:03,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:00:03,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2087140157] [2023-08-29 21:00:03,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:00:03,898 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:00:03,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:00:03,899 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:00:03,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-08-29 21:00:04,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:00:04,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-29 21:00:04,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:00:04,112 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-08-29 21:00:04,112 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 19 treesize of output 27 [2023-08-29 21:00:04,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:00:04,150 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:00:04,151 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:00:04,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2087140157] [2023-08-29 21:00:04,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2087140157] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:00:04,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:00:04,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 21:00:04,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064299997] [2023-08-29 21:00:04,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:00:04,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:00:04,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:00:04,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:00:04,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:00:04,456 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 429 [2023-08-29 21:00:04,457 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 74 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 188.0) internal successors, (564), 3 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:04,457 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:00:04,457 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 429 [2023-08-29 21:00:04,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:00:05,626 INFO L130 PetriNetUnfolder]: 606/1216 cut-off events. [2023-08-29 21:00:05,627 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-29 21:00:05,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2347 conditions, 1216 events. 606/1216 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 7780 event pairs, 558 based on Foata normal form. 0/968 useless extension candidates. Maximal degree in co-relation 2342. Up to 967 conditions per place. [2023-08-29 21:00:05,632 INFO L137 encePairwiseOnDemand]: 418/429 looper letters, 54 selfloop transitions, 9 changer transitions 0/88 dead transitions. [2023-08-29 21:00:05,633 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 88 transitions, 324 flow [2023-08-29 21:00:05,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:00:05,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:00:05,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 626 transitions. [2023-08-29 21:00:05,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864024864024864 [2023-08-29 21:00:05,637 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 626 transitions. [2023-08-29 21:00:05,637 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 626 transitions. [2023-08-29 21:00:05,637 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:00:05,637 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 626 transitions. [2023-08-29 21:00:05,639 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 208.66666666666666) internal successors, (626), 3 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:05,641 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:05,642 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:05,642 INFO L175 Difference]: Start difference. First operand has 80 places, 74 transitions, 168 flow. Second operand 3 states and 626 transitions. [2023-08-29 21:00:05,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 88 transitions, 324 flow [2023-08-29 21:00:05,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 88 transitions, 312 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 21:00:05,645 INFO L231 Difference]: Finished difference. Result has 79 places, 73 transitions, 185 flow [2023-08-29 21:00:05,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=185, PETRI_PLACES=79, PETRI_TRANSITIONS=73} [2023-08-29 21:00:05,646 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, -15 predicate places. [2023-08-29 21:00:05,646 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 73 transitions, 185 flow [2023-08-29 21:00:05,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 188.0) internal successors, (564), 3 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:05,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:00:05,647 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 21:00:05,663 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-08-29 21:00:05,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:00:05,860 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-08-29 21:00:05,860 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:00:05,860 INFO L85 PathProgramCache]: Analyzing trace with hash 749813, now seen corresponding path program 1 times [2023-08-29 21:00:05,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:00:05,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [540006592] [2023-08-29 21:00:05,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:00:05,861 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:00:05,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:00:05,863 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:00:05,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-08-29 21:00:06,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:00:06,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-29 21:00:06,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:00:06,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:00:06,092 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-29 21:00:06,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:00:06,120 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:00:06,121 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:00:06,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [540006592] [2023-08-29 21:00:06,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [540006592] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:00:06,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:00:06,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 21:00:06,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433472108] [2023-08-29 21:00:06,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:00:06,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:00:06,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:00:06,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:00:06,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:00:06,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 429 [2023-08-29 21:00:06,485 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 73 transitions, 185 flow. Second operand has 3 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:06,485 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:00:06,485 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 429 [2023-08-29 21:00:06,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:00:07,279 INFO L130 PetriNetUnfolder]: 600/1194 cut-off events. [2023-08-29 21:00:07,280 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-29 21:00:07,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2339 conditions, 1194 events. 600/1194 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 7625 event pairs, 600 based on Foata normal form. 0/958 useless extension candidates. Maximal degree in co-relation 2333. Up to 1052 conditions per place. [2023-08-29 21:00:07,289 INFO L137 encePairwiseOnDemand]: 425/429 looper letters, 44 selfloop transitions, 2 changer transitions 0/71 dead transitions. [2023-08-29 21:00:07,289 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 71 transitions, 273 flow [2023-08-29 21:00:07,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:00:07,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:00:07,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 611 transitions. [2023-08-29 21:00:07,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47474747474747475 [2023-08-29 21:00:07,293 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 611 transitions. [2023-08-29 21:00:07,293 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 611 transitions. [2023-08-29 21:00:07,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:00:07,294 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 611 transitions. [2023-08-29 21:00:07,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 203.66666666666666) internal successors, (611), 3 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:07,297 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:07,298 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:07,299 INFO L175 Difference]: Start difference. First operand has 79 places, 73 transitions, 185 flow. Second operand 3 states and 611 transitions. [2023-08-29 21:00:07,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 71 transitions, 273 flow [2023-08-29 21:00:07,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 71 transitions, 264 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 21:00:07,305 INFO L231 Difference]: Finished difference. Result has 78 places, 71 transitions, 176 flow [2023-08-29 21:00:07,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=78, PETRI_TRANSITIONS=71} [2023-08-29 21:00:07,314 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, -16 predicate places. [2023-08-29 21:00:07,314 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 71 transitions, 176 flow [2023-08-29 21:00:07,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:07,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:00:07,314 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 21:00:07,331 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-08-29 21:00:07,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:00:07,515 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-08-29 21:00:07,515 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:00:07,515 INFO L85 PathProgramCache]: Analyzing trace with hash 756929, now seen corresponding path program 1 times [2023-08-29 21:00:07,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:00:07,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [792717777] [2023-08-29 21:00:07,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:00:07,516 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:00:07,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:00:07,518 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:00:07,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-08-29 21:00:07,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:00:07,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-29 21:00:07,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:00:07,658 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 [2023-08-29 21:00:07,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:00:07,674 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:00:07,675 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:00:07,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [792717777] [2023-08-29 21:00:07,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [792717777] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:00:07,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:00:07,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 21:00:07,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130122508] [2023-08-29 21:00:07,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:00:07,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:00:07,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:00:07,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:00:07,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:00:07,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 429 [2023-08-29 21:00:07,963 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 71 transitions, 176 flow. Second operand has 3 states, 3 states have (on average 182.0) internal successors, (546), 3 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:07,963 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:00:07,963 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 429 [2023-08-29 21:00:07,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:00:09,111 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec, FloatRoundingMode], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-29 21:00:09,655 INFO L130 PetriNetUnfolder]: 504/1030 cut-off events. [2023-08-29 21:00:09,655 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-29 21:00:09,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1990 conditions, 1030 events. 504/1030 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 6375 event pairs, 183 based on Foata normal form. 17/862 useless extension candidates. Maximal degree in co-relation 1984. Up to 562 conditions per place. [2023-08-29 21:00:09,662 INFO L137 encePairwiseOnDemand]: 420/429 looper letters, 52 selfloop transitions, 5 changer transitions 0/82 dead transitions. [2023-08-29 21:00:09,662 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 82 transitions, 312 flow [2023-08-29 21:00:09,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:00:09,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:00:09,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 604 transitions. [2023-08-29 21:00:09,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4693084693084693 [2023-08-29 21:00:09,665 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 604 transitions. [2023-08-29 21:00:09,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 604 transitions. [2023-08-29 21:00:09,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:00:09,666 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 604 transitions. [2023-08-29 21:00:09,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 201.33333333333334) internal successors, (604), 3 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:09,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:09,671 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:09,671 INFO L175 Difference]: Start difference. First operand has 78 places, 71 transitions, 176 flow. Second operand 3 states and 604 transitions. [2023-08-29 21:00:09,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 82 transitions, 312 flow [2023-08-29 21:00:09,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 82 transitions, 310 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 21:00:09,673 INFO L231 Difference]: Finished difference. Result has 80 places, 71 transitions, 197 flow [2023-08-29 21:00:09,674 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=197, PETRI_PLACES=80, PETRI_TRANSITIONS=71} [2023-08-29 21:00:09,674 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, -14 predicate places. [2023-08-29 21:00:09,675 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 71 transitions, 197 flow [2023-08-29 21:00:09,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 182.0) internal successors, (546), 3 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:09,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:00:09,675 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-29 21:00:09,689 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-08-29 21:00:09,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:00:09,887 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting my_callbackErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-08-29 21:00:09,887 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:00:09,887 INFO L85 PathProgramCache]: Analyzing trace with hash 23245384, now seen corresponding path program 1 times [2023-08-29 21:00:09,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:00:09,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1662431291] [2023-08-29 21:00:09,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:00:09,889 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:00:09,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:00:09,890 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:00:09,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-08-29 21:00:10,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:00:10,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-29 21:00:10,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:00:10,022 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-08-29 21:00:10,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:00:10,052 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:00:10,052 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:00:10,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1662431291] [2023-08-29 21:00:10,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1662431291] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:00:10,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:00:10,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 21:00:10,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163513891] [2023-08-29 21:00:10,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:00:10,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 21:00:10,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:00:10,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 21:00:10,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-29 21:00:10,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 429 [2023-08-29 21:00:10,748 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 71 transitions, 197 flow. Second operand has 5 states, 5 states have (on average 180.8) internal successors, (904), 5 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:10,748 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:00:10,748 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 429 [2023-08-29 21:00:10,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:00:13,983 INFO L130 PetriNetUnfolder]: 856/1746 cut-off events. [2023-08-29 21:00:13,983 INFO L131 PetriNetUnfolder]: For 94/94 co-relation queries the response was YES. [2023-08-29 21:00:13,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3465 conditions, 1746 events. 856/1746 cut-off events. For 94/94 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 11868 event pairs, 440 based on Foata normal form. 0/1416 useless extension candidates. Maximal degree in co-relation 3458. Up to 1067 conditions per place. [2023-08-29 21:00:13,997 INFO L137 encePairwiseOnDemand]: 412/429 looper letters, 86 selfloop transitions, 16 changer transitions 0/122 dead transitions. [2023-08-29 21:00:13,998 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 122 transitions, 524 flow [2023-08-29 21:00:13,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 21:00:13,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 21:00:14,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1187 transitions. [2023-08-29 21:00:14,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46114996114996115 [2023-08-29 21:00:14,002 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1187 transitions. [2023-08-29 21:00:14,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1187 transitions. [2023-08-29 21:00:14,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:00:14,003 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1187 transitions. [2023-08-29 21:00:14,006 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 197.83333333333334) internal successors, (1187), 6 states have internal predecessors, (1187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:14,011 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 429.0) internal successors, (3003), 7 states have internal predecessors, (3003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:14,011 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 429.0) internal successors, (3003), 7 states have internal predecessors, (3003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:14,012 INFO L175 Difference]: Start difference. First operand has 80 places, 71 transitions, 197 flow. Second operand 6 states and 1187 transitions. [2023-08-29 21:00:14,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 122 transitions, 524 flow [2023-08-29 21:00:14,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 122 transitions, 504 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 21:00:14,017 INFO L231 Difference]: Finished difference. Result has 87 places, 77 transitions, 279 flow [2023-08-29 21:00:14,017 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=279, PETRI_PLACES=87, PETRI_TRANSITIONS=77} [2023-08-29 21:00:14,018 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, -7 predicate places. [2023-08-29 21:00:14,018 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 77 transitions, 279 flow [2023-08-29 21:00:14,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 180.8) internal successors, (904), 5 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:14,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:00:14,019 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-29 21:00:14,033 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-08-29 21:00:14,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:00:14,231 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-08-29 21:00:14,231 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:00:14,231 INFO L85 PathProgramCache]: Analyzing trace with hash 23245385, now seen corresponding path program 1 times [2023-08-29 21:00:14,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:00:14,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [602021276] [2023-08-29 21:00:14,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:00:14,232 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:00:14,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:00:14,233 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:00:14,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-08-29 21:00:14,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:00:14,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-29 21:00:14,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:00:14,369 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 [2023-08-29 21:00:14,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:00:14,439 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:00:14,439 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:00:14,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [602021276] [2023-08-29 21:00:14,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [602021276] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:00:14,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:00:14,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 21:00:14,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663144164] [2023-08-29 21:00:14,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:00:14,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 21:00:14,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:00:14,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 21:00:14,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-29 21:00:15,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 429 [2023-08-29 21:00:15,436 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 77 transitions, 279 flow. Second operand has 5 states, 5 states have (on average 183.8) internal successors, (919), 5 states have internal predecessors, (919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:15,436 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:00:15,436 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 429 [2023-08-29 21:00:15,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:00:18,148 INFO L130 PetriNetUnfolder]: 751/1501 cut-off events. [2023-08-29 21:00:18,148 INFO L131 PetriNetUnfolder]: For 468/512 co-relation queries the response was YES. [2023-08-29 21:00:18,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3385 conditions, 1501 events. 751/1501 cut-off events. For 468/512 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 10138 event pairs, 151 based on Foata normal form. 138/1409 useless extension candidates. Maximal degree in co-relation 3375. Up to 819 conditions per place. [2023-08-29 21:00:18,156 INFO L137 encePairwiseOnDemand]: 420/429 looper letters, 76 selfloop transitions, 9 changer transitions 2/111 dead transitions. [2023-08-29 21:00:18,156 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 111 transitions, 536 flow [2023-08-29 21:00:18,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 21:00:18,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 21:00:18,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1003 transitions. [2023-08-29 21:00:18,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4675990675990676 [2023-08-29 21:00:18,162 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1003 transitions. [2023-08-29 21:00:18,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1003 transitions. [2023-08-29 21:00:18,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:00:18,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1003 transitions. [2023-08-29 21:00:18,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 200.6) internal successors, (1003), 5 states have internal predecessors, (1003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:18,168 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 429.0) internal successors, (2574), 6 states have internal predecessors, (2574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:18,169 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 429.0) internal successors, (2574), 6 states have internal predecessors, (2574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:18,169 INFO L175 Difference]: Start difference. First operand has 87 places, 77 transitions, 279 flow. Second operand 5 states and 1003 transitions. [2023-08-29 21:00:18,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 111 transitions, 536 flow [2023-08-29 21:00:18,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 111 transitions, 536 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 21:00:18,176 INFO L231 Difference]: Finished difference. Result has 93 places, 80 transitions, 332 flow [2023-08-29 21:00:18,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=332, PETRI_PLACES=93, PETRI_TRANSITIONS=80} [2023-08-29 21:00:18,178 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, -1 predicate places. [2023-08-29 21:00:18,178 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 80 transitions, 332 flow [2023-08-29 21:00:18,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 183.8) internal successors, (919), 5 states have internal predecessors, (919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:18,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:00:18,184 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-29 21:00:18,199 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-08-29 21:00:18,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:00:18,396 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-08-29 21:00:18,396 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:00:18,396 INFO L85 PathProgramCache]: Analyzing trace with hash 727421441, now seen corresponding path program 1 times [2023-08-29 21:00:18,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:00:18,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [206500727] [2023-08-29 21:00:18,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:00:18,397 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:00:18,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:00:18,398 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:00:18,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-08-29 21:00:18,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:00:18,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-29 21:00:18,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:00:18,620 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 45 [2023-08-29 21:00:18,698 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 21:00:18,699 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 73 treesize of output 93 [2023-08-29 21:00:18,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:00:18,727 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:00:18,727 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:00:18,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [206500727] [2023-08-29 21:00:18,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [206500727] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:00:18,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:00:18,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 21:00:18,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608542102] [2023-08-29 21:00:18,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:00:18,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:00:18,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:00:18,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:00:18,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:00:19,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 429 [2023-08-29 21:00:19,371 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 80 transitions, 332 flow. Second operand has 3 states, 3 states have (on average 176.33333333333334) internal successors, (529), 3 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:19,371 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:00:19,371 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 429 [2023-08-29 21:00:19,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:00:21,259 INFO L130 PetriNetUnfolder]: 1622/3002 cut-off events. [2023-08-29 21:00:21,259 INFO L131 PetriNetUnfolder]: For 2154/2168 co-relation queries the response was YES. [2023-08-29 21:00:21,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7395 conditions, 3002 events. 1622/3002 cut-off events. For 2154/2168 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 18980 event pairs, 1144 based on Foata normal form. 0/2499 useless extension candidates. Maximal degree in co-relation 7382. Up to 2348 conditions per place. [2023-08-29 21:00:21,274 INFO L137 encePairwiseOnDemand]: 420/429 looper letters, 65 selfloop transitions, 11 changer transitions 0/95 dead transitions. [2023-08-29 21:00:21,274 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 95 transitions, 542 flow [2023-08-29 21:00:21,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:00:21,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:00:21,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 591 transitions. [2023-08-29 21:00:21,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4592074592074592 [2023-08-29 21:00:21,278 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 591 transitions. [2023-08-29 21:00:21,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 591 transitions. [2023-08-29 21:00:21,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:00:21,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 591 transitions. [2023-08-29 21:00:21,280 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:21,282 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:21,282 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:21,282 INFO L175 Difference]: Start difference. First operand has 93 places, 80 transitions, 332 flow. Second operand 3 states and 591 transitions. [2023-08-29 21:00:21,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 95 transitions, 542 flow [2023-08-29 21:00:21,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 95 transitions, 519 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-08-29 21:00:21,288 INFO L231 Difference]: Finished difference. Result has 93 places, 87 transitions, 402 flow [2023-08-29 21:00:21,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=402, PETRI_PLACES=93, PETRI_TRANSITIONS=87} [2023-08-29 21:00:21,289 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, -1 predicate places. [2023-08-29 21:00:21,289 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 87 transitions, 402 flow [2023-08-29 21:00:21,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 176.33333333333334) internal successors, (529), 3 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:21,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:00:21,290 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-29 21:00:21,303 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-08-29 21:00:21,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:00:21,502 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-08-29 21:00:21,503 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:00:21,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1075229008, now seen corresponding path program 1 times [2023-08-29 21:00:21,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:00:21,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [619296161] [2023-08-29 21:00:21,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:00:21,503 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:00:21,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:00:21,504 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:00:21,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-08-29 21:00:21,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:00:21,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-29 21:00:21,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:00:21,702 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:00:21,703 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:00:21,703 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:00:21,705 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 41 [2023-08-29 21:00:21,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:00:21,747 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:00:21,747 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:00:21,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [619296161] [2023-08-29 21:00:21,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [619296161] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:00:21,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:00:21,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 21:00:21,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591064041] [2023-08-29 21:00:21,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:00:21,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:00:21,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:00:21,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:00:21,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:00:22,319 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 429 [2023-08-29 21:00:22,320 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 87 transitions, 402 flow. Second operand has 3 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:22,320 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:00:22,320 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 429 [2023-08-29 21:00:22,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:00:24,026 INFO L130 PetriNetUnfolder]: 1934/3480 cut-off events. [2023-08-29 21:00:24,026 INFO L131 PetriNetUnfolder]: For 3651/3665 co-relation queries the response was YES. [2023-08-29 21:00:24,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9948 conditions, 3480 events. 1934/3480 cut-off events. For 3651/3665 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 21893 event pairs, 1316 based on Foata normal form. 0/3009 useless extension candidates. Maximal degree in co-relation 9935. Up to 2799 conditions per place. [2023-08-29 21:00:24,043 INFO L137 encePairwiseOnDemand]: 421/429 looper letters, 74 selfloop transitions, 14 changer transitions 0/106 dead transitions. [2023-08-29 21:00:24,043 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 106 transitions, 685 flow [2023-08-29 21:00:24,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:00:24,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:00:24,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 592 transitions. [2023-08-29 21:00:24,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45998445998445997 [2023-08-29 21:00:24,047 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 592 transitions. [2023-08-29 21:00:24,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 592 transitions. [2023-08-29 21:00:24,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:00:24,048 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 592 transitions. [2023-08-29 21:00:24,049 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.33333333333334) internal successors, (592), 3 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:24,051 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:24,051 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:24,051 INFO L175 Difference]: Start difference. First operand has 93 places, 87 transitions, 402 flow. Second operand 3 states and 592 transitions. [2023-08-29 21:00:24,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 106 transitions, 685 flow [2023-08-29 21:00:24,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 106 transitions, 649 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 21:00:24,061 INFO L231 Difference]: Finished difference. Result has 94 places, 97 transitions, 506 flow [2023-08-29 21:00:24,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=506, PETRI_PLACES=94, PETRI_TRANSITIONS=97} [2023-08-29 21:00:24,062 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, 0 predicate places. [2023-08-29 21:00:24,062 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 97 transitions, 506 flow [2023-08-29 21:00:24,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:24,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:00:24,063 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-29 21:00:24,083 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-08-29 21:00:24,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:00:24,283 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting my_callbackErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-08-29 21:00:24,284 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:00:24,284 INFO L85 PathProgramCache]: Analyzing trace with hash 863295962, now seen corresponding path program 1 times [2023-08-29 21:00:24,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:00:24,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1785152276] [2023-08-29 21:00:24,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:00:24,284 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:00:24,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:00:24,285 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:00:24,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-08-29 21:00:24,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:00:24,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-29 21:00:24,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:00:24,427 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-08-29 21:00:24,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:00:24,453 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:00:24,454 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:00:24,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1785152276] [2023-08-29 21:00:24,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1785152276] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:00:24,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:00:24,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 21:00:24,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342821106] [2023-08-29 21:00:24,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:00:24,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 21:00:24,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:00:24,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 21:00:24,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-29 21:00:25,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 429 [2023-08-29 21:00:25,172 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 97 transitions, 506 flow. Second operand has 5 states, 5 states have (on average 181.2) internal successors, (906), 5 states have internal predecessors, (906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:25,172 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:00:25,172 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 429 [2023-08-29 21:00:25,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:00:28,347 INFO L130 PetriNetUnfolder]: 1545/3088 cut-off events. [2023-08-29 21:00:28,347 INFO L131 PetriNetUnfolder]: For 3048/3320 co-relation queries the response was YES. [2023-08-29 21:00:28,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8924 conditions, 3088 events. 1545/3088 cut-off events. For 3048/3320 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 23242 event pairs, 275 based on Foata normal form. 295/3043 useless extension candidates. Maximal degree in co-relation 8910. Up to 1714 conditions per place. [2023-08-29 21:00:28,361 INFO L137 encePairwiseOnDemand]: 412/429 looper letters, 102 selfloop transitions, 24 changer transitions 0/154 dead transitions. [2023-08-29 21:00:28,362 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 154 transitions, 999 flow [2023-08-29 21:00:28,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 21:00:28,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 21:00:28,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1187 transitions. [2023-08-29 21:00:28,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46114996114996115 [2023-08-29 21:00:28,366 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1187 transitions. [2023-08-29 21:00:28,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1187 transitions. [2023-08-29 21:00:28,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:00:28,367 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1187 transitions. [2023-08-29 21:00:28,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 197.83333333333334) internal successors, (1187), 6 states have internal predecessors, (1187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:28,372 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 429.0) internal successors, (3003), 7 states have internal predecessors, (3003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:28,373 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 429.0) internal successors, (3003), 7 states have internal predecessors, (3003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:28,373 INFO L175 Difference]: Start difference. First operand has 94 places, 97 transitions, 506 flow. Second operand 6 states and 1187 transitions. [2023-08-29 21:00:28,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 154 transitions, 999 flow [2023-08-29 21:00:28,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 154 transitions, 983 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 21:00:28,380 INFO L231 Difference]: Finished difference. Result has 102 places, 105 transitions, 668 flow [2023-08-29 21:00:28,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=492, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=668, PETRI_PLACES=102, PETRI_TRANSITIONS=105} [2023-08-29 21:00:28,381 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, 8 predicate places. [2023-08-29 21:00:28,381 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 105 transitions, 668 flow [2023-08-29 21:00:28,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 181.2) internal successors, (906), 5 states have internal predecessors, (906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:28,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:00:28,382 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-29 21:00:28,397 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-08-29 21:00:28,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:00:28,594 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-08-29 21:00:28,594 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:00:28,595 INFO L85 PathProgramCache]: Analyzing trace with hash 863295963, now seen corresponding path program 1 times [2023-08-29 21:00:28,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:00:28,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [81290607] [2023-08-29 21:00:28,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:00:28,596 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:00:28,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:00:28,597 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:00:28,599 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-08-29 21:00:28,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:00:28,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-29 21:00:28,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:00:28,774 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 [2023-08-29 21:00:28,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:00:28,839 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:00:28,839 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:00:28,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [81290607] [2023-08-29 21:00:28,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [81290607] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:00:28,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:00:28,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 21:00:28,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749854347] [2023-08-29 21:00:28,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:00:28,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 21:00:28,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:00:28,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 21:00:28,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-29 21:00:29,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 429 [2023-08-29 21:00:29,438 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 105 transitions, 668 flow. Second operand has 5 states, 5 states have (on average 184.2) internal successors, (921), 5 states have internal predecessors, (921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:29,438 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:00:29,438 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 429 [2023-08-29 21:00:29,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:00:32,598 INFO L130 PetriNetUnfolder]: 1547/2882 cut-off events. [2023-08-29 21:00:32,598 INFO L131 PetriNetUnfolder]: For 4518/4844 co-relation queries the response was YES. [2023-08-29 21:00:32,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8783 conditions, 2882 events. 1547/2882 cut-off events. For 4518/4844 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 20090 event pairs, 383 based on Foata normal form. 344/2843 useless extension candidates. Maximal degree in co-relation 8766. Up to 1113 conditions per place. [2023-08-29 21:00:32,612 INFO L137 encePairwiseOnDemand]: 420/429 looper letters, 87 selfloop transitions, 13 changer transitions 2/140 dead transitions. [2023-08-29 21:00:32,612 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 140 transitions, 1011 flow [2023-08-29 21:00:32,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 21:00:32,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 21:00:32,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1000 transitions. [2023-08-29 21:00:32,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4662004662004662 [2023-08-29 21:00:32,615 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1000 transitions. [2023-08-29 21:00:32,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1000 transitions. [2023-08-29 21:00:32,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:00:32,616 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1000 transitions. [2023-08-29 21:00:32,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 200.0) internal successors, (1000), 5 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:32,620 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 429.0) internal successors, (2574), 6 states have internal predecessors, (2574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:32,621 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 429.0) internal successors, (2574), 6 states have internal predecessors, (2574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:32,621 INFO L175 Difference]: Start difference. First operand has 102 places, 105 transitions, 668 flow. Second operand 5 states and 1000 transitions. [2023-08-29 21:00:32,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 140 transitions, 1011 flow [2023-08-29 21:00:32,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 140 transitions, 1007 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 21:00:32,630 INFO L231 Difference]: Finished difference. Result has 107 places, 110 transitions, 741 flow [2023-08-29 21:00:32,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=664, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=741, PETRI_PLACES=107, PETRI_TRANSITIONS=110} [2023-08-29 21:00:32,631 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, 13 predicate places. [2023-08-29 21:00:32,631 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 110 transitions, 741 flow [2023-08-29 21:00:32,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 184.2) internal successors, (921), 5 states have internal predecessors, (921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:32,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:00:32,632 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-29 21:00:32,643 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-08-29 21:00:32,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:00:32,844 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-08-29 21:00:32,844 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:00:32,844 INFO L85 PathProgramCache]: Analyzing trace with hash 863295537, now seen corresponding path program 1 times [2023-08-29 21:00:32,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:00:32,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1627978219] [2023-08-29 21:00:32,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:00:32,845 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:00:32,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:00:32,846 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:00:32,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-08-29 21:00:33,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:00:33,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-29 21:00:33,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:00:33,101 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 [2023-08-29 21:00:33,108 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-08-29 21:00:33,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:00:33,151 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:00:33,152 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:00:33,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1627978219] [2023-08-29 21:00:33,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1627978219] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:00:33,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:00:33,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 21:00:33,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724923265] [2023-08-29 21:00:33,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:00:33,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:00:33,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:00:33,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:00:33,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:00:33,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 429 [2023-08-29 21:00:33,446 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 110 transitions, 741 flow. Second operand has 3 states, 3 states have (on average 176.0) internal successors, (528), 3 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:33,446 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:00:33,446 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 429 [2023-08-29 21:00:33,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:00:34,322 INFO L130 PetriNetUnfolder]: 1222/2353 cut-off events. [2023-08-29 21:00:34,322 INFO L131 PetriNetUnfolder]: For 4875/5120 co-relation queries the response was YES. [2023-08-29 21:00:34,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7678 conditions, 2353 events. 1222/2353 cut-off events. For 4875/5120 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 16380 event pairs, 736 based on Foata normal form. 17/2059 useless extension candidates. Maximal degree in co-relation 7658. Up to 1444 conditions per place. [2023-08-29 21:00:34,333 INFO L137 encePairwiseOnDemand]: 418/429 looper letters, 48 selfloop transitions, 15 changer transitions 0/104 dead transitions. [2023-08-29 21:00:34,334 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 104 transitions, 801 flow [2023-08-29 21:00:34,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:00:34,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:00:34,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 573 transitions. [2023-08-29 21:00:34,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44522144522144524 [2023-08-29 21:00:34,338 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 573 transitions. [2023-08-29 21:00:34,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 573 transitions. [2023-08-29 21:00:34,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:00:34,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 573 transitions. [2023-08-29 21:00:34,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 191.0) internal successors, (573), 3 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:34,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:34,342 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:34,342 INFO L175 Difference]: Start difference. First operand has 107 places, 110 transitions, 741 flow. Second operand 3 states and 573 transitions. [2023-08-29 21:00:34,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 104 transitions, 801 flow [2023-08-29 21:00:34,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 104 transitions, 771 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-29 21:00:34,353 INFO L231 Difference]: Finished difference. Result has 98 places, 100 transitions, 663 flow [2023-08-29 21:00:34,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=633, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=663, PETRI_PLACES=98, PETRI_TRANSITIONS=100} [2023-08-29 21:00:34,354 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, 4 predicate places. [2023-08-29 21:00:34,354 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 100 transitions, 663 flow [2023-08-29 21:00:34,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 176.0) internal successors, (528), 3 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:34,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:00:34,355 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:00:34,370 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-08-29 21:00:34,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:00:34,568 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-08-29 21:00:34,568 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:00:34,569 INFO L85 PathProgramCache]: Analyzing trace with hash 992358416, now seen corresponding path program 1 times [2023-08-29 21:00:34,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:00:34,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1129306417] [2023-08-29 21:00:34,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:00:34,570 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:00:34,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:00:34,571 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:00:34,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-08-29 21:00:34,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:00:34,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-29 21:00:34,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:00:34,861 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-08-29 21:00:34,867 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 [2023-08-29 21:00:34,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:00:34,945 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-29 21:00:34,968 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-08-29 21:00:34,969 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-08-29 21:00:34,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:00:34,983 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:00:34,983 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:00:34,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1129306417] [2023-08-29 21:00:34,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1129306417] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:00:34,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:00:34,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 21:00:34,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038793124] [2023-08-29 21:00:34,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:00:34,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 21:00:34,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:00:34,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 21:00:34,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-29 21:00:35,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 429 [2023-08-29 21:00:35,345 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 100 transitions, 663 flow. Second operand has 4 states, 4 states have (on average 168.75) internal successors, (675), 4 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:35,345 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:00:35,346 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 429 [2023-08-29 21:00:35,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:00:37,400 INFO L130 PetriNetUnfolder]: 1132/2201 cut-off events. [2023-08-29 21:00:37,400 INFO L131 PetriNetUnfolder]: For 5101/5310 co-relation queries the response was YES. [2023-08-29 21:00:37,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7225 conditions, 2201 events. 1132/2201 cut-off events. For 5101/5310 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 15059 event pairs, 517 based on Foata normal form. 53/1976 useless extension candidates. Maximal degree in co-relation 7206. Up to 911 conditions per place. [2023-08-29 21:00:37,409 INFO L137 encePairwiseOnDemand]: 421/429 looper letters, 48 selfloop transitions, 19 changer transitions 1/109 dead transitions. [2023-08-29 21:00:37,409 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 109 transitions, 829 flow [2023-08-29 21:00:37,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 21:00:37,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 21:00:37,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 890 transitions. [2023-08-29 21:00:37,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4149184149184149 [2023-08-29 21:00:37,415 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 890 transitions. [2023-08-29 21:00:37,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 890 transitions. [2023-08-29 21:00:37,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:00:37,415 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 890 transitions. [2023-08-29 21:00:37,417 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 178.0) internal successors, (890), 5 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:37,420 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 429.0) internal successors, (2574), 6 states have internal predecessors, (2574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:37,420 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 429.0) internal successors, (2574), 6 states have internal predecessors, (2574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:37,420 INFO L175 Difference]: Start difference. First operand has 98 places, 100 transitions, 663 flow. Second operand 5 states and 890 transitions. [2023-08-29 21:00:37,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 109 transitions, 829 flow [2023-08-29 21:00:37,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 109 transitions, 799 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 21:00:37,430 INFO L231 Difference]: Finished difference. Result has 97 places, 97 transitions, 665 flow [2023-08-29 21:00:37,430 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=627, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=665, PETRI_PLACES=97, PETRI_TRANSITIONS=97} [2023-08-29 21:00:37,431 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, 3 predicate places. [2023-08-29 21:00:37,431 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 97 transitions, 665 flow [2023-08-29 21:00:37,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 168.75) internal successors, (675), 4 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:37,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:00:37,431 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:00:37,448 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-08-29 21:00:37,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:00:37,645 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-08-29 21:00:37,646 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:00:37,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1792080940, now seen corresponding path program 1 times [2023-08-29 21:00:37,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:00:37,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1478627968] [2023-08-29 21:00:37,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:00:37,647 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:00:37,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:00:37,647 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:00:37,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-08-29 21:00:37,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:00:37,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-29 21:00:37,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:00:38,007 WARN L861 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#data~1#1.base_199| (_ BitVec 32))) (and (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#data~1#1.base_199| (_ bv0 1))) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#data~1#1.base_199|)))) is different from true [2023-08-29 21:00:38,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:00:38,008 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:00:38,008 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:00:38,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1478627968] [2023-08-29 21:00:38,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1478627968] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:00:38,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:00:38,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 21:00:38,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570495457] [2023-08-29 21:00:38,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:00:38,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 21:00:38,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:00:38,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 21:00:38,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-08-29 21:00:38,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 429 [2023-08-29 21:00:38,075 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 97 transitions, 665 flow. Second operand has 4 states, 4 states have (on average 126.0) internal successors, (504), 4 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:38,075 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:00:38,075 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 429 [2023-08-29 21:00:38,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:00:39,133 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec, FloatRoundingMode], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-29 21:00:40,109 INFO L130 PetriNetUnfolder]: 2312/3888 cut-off events. [2023-08-29 21:00:40,109 INFO L131 PetriNetUnfolder]: For 9526/9526 co-relation queries the response was YES. [2023-08-29 21:00:40,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13852 conditions, 3888 events. 2312/3888 cut-off events. For 9526/9526 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 22606 event pairs, 783 based on Foata normal form. 0/3517 useless extension candidates. Maximal degree in co-relation 13833. Up to 2219 conditions per place. [2023-08-29 21:00:40,123 INFO L137 encePairwiseOnDemand]: 407/429 looper letters, 84 selfloop transitions, 32 changer transitions 2/126 dead transitions. [2023-08-29 21:00:40,123 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 126 transitions, 1055 flow [2023-08-29 21:00:40,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 21:00:40,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 21:00:40,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 581 transitions. [2023-08-29 21:00:40,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3385780885780886 [2023-08-29 21:00:40,125 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 581 transitions. [2023-08-29 21:00:40,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 581 transitions. [2023-08-29 21:00:40,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:00:40,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 581 transitions. [2023-08-29 21:00:40,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 145.25) internal successors, (581), 4 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:40,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 429.0) internal successors, (2145), 5 states have internal predecessors, (2145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:40,129 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 429.0) internal successors, (2145), 5 states have internal predecessors, (2145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:40,129 INFO L175 Difference]: Start difference. First operand has 97 places, 97 transitions, 665 flow. Second operand 4 states and 581 transitions. [2023-08-29 21:00:40,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 126 transitions, 1055 flow [2023-08-29 21:00:40,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 126 transitions, 1025 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 21:00:40,138 INFO L231 Difference]: Finished difference. Result has 99 places, 112 transitions, 834 flow [2023-08-29 21:00:40,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=635, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=834, PETRI_PLACES=99, PETRI_TRANSITIONS=112} [2023-08-29 21:00:40,138 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, 5 predicate places. [2023-08-29 21:00:40,139 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 112 transitions, 834 flow [2023-08-29 21:00:40,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 126.0) internal successors, (504), 4 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:40,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:00:40,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:00:40,153 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 (16)] Forceful destruction successful, exit code 0 [2023-08-29 21:00:40,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:00:40,352 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-08-29 21:00:40,353 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:00:40,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1522924607, now seen corresponding path program 1 times [2023-08-29 21:00:40,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:00:40,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [961985298] [2023-08-29 21:00:40,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:00:40,354 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:00:40,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:00:40,355 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:00:40,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-08-29 21:00:40,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:00:40,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-29 21:00:40,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:00:40,612 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-08-29 21:00:40,618 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 [2023-08-29 21:00:40,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:00:40,736 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-29 21:00:40,748 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-08-29 21:00:40,748 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-08-29 21:00:40,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:00:40,762 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:00:40,762 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:00:40,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [961985298] [2023-08-29 21:00:40,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [961985298] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:00:40,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:00:40,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 21:00:40,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854251437] [2023-08-29 21:00:40,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:00:40,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 21:00:40,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:00:40,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 21:00:40,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-29 21:00:42,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 429 [2023-08-29 21:00:42,200 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 112 transitions, 834 flow. Second operand has 6 states, 6 states have (on average 177.33333333333334) internal successors, (1064), 6 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:42,200 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:00:42,200 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 429 [2023-08-29 21:00:42,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:00:45,260 INFO L130 PetriNetUnfolder]: 2131/3770 cut-off events. [2023-08-29 21:00:45,260 INFO L131 PetriNetUnfolder]: For 10379/10602 co-relation queries the response was YES. [2023-08-29 21:00:45,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14150 conditions, 3770 events. 2131/3770 cut-off events. For 10379/10602 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 24606 event pairs, 914 based on Foata normal form. 125/3582 useless extension candidates. Maximal degree in co-relation 14130. Up to 1718 conditions per place. [2023-08-29 21:00:45,275 INFO L137 encePairwiseOnDemand]: 415/429 looper letters, 103 selfloop transitions, 24 changer transitions 0/157 dead transitions. [2023-08-29 21:00:45,275 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 157 transitions, 1301 flow [2023-08-29 21:00:45,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 21:00:45,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 21:00:45,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1322 transitions. [2023-08-29 21:00:45,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44022644022644025 [2023-08-29 21:00:45,278 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1322 transitions. [2023-08-29 21:00:45,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1322 transitions. [2023-08-29 21:00:45,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:00:45,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1322 transitions. [2023-08-29 21:00:45,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 188.85714285714286) internal successors, (1322), 7 states have internal predecessors, (1322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:45,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 429.0) internal successors, (3432), 8 states have internal predecessors, (3432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:45,285 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 429.0) internal successors, (3432), 8 states have internal predecessors, (3432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:45,285 INFO L175 Difference]: Start difference. First operand has 99 places, 112 transitions, 834 flow. Second operand 7 states and 1322 transitions. [2023-08-29 21:00:45,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 157 transitions, 1301 flow [2023-08-29 21:00:45,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 157 transitions, 1219 flow, removed 17 selfloop flow, removed 4 redundant places. [2023-08-29 21:00:45,301 INFO L231 Difference]: Finished difference. Result has 98 places, 110 transitions, 820 flow [2023-08-29 21:00:45,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=746, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=820, PETRI_PLACES=98, PETRI_TRANSITIONS=110} [2023-08-29 21:00:45,302 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, 4 predicate places. [2023-08-29 21:00:45,302 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 110 transitions, 820 flow [2023-08-29 21:00:45,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 177.33333333333334) internal successors, (1064), 6 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:45,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:00:45,303 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:00:45,313 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-08-29 21:00:45,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:00:45,505 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-08-29 21:00:45,505 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:00:45,505 INFO L85 PathProgramCache]: Analyzing trace with hash 698935319, now seen corresponding path program 1 times [2023-08-29 21:00:45,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:00:45,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1888226964] [2023-08-29 21:00:45,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:00:45,506 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:00:45,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:00:45,507 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:00:45,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-08-29 21:00:45,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:00:45,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-29 21:00:45,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:00:45,748 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 [2023-08-29 21:00:45,753 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-08-29 21:00:45,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:00:45,835 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-29 21:00:45,850 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-08-29 21:00:45,850 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-08-29 21:00:45,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:00:45,864 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:00:45,864 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:00:45,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1888226964] [2023-08-29 21:00:45,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1888226964] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:00:45,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:00:45,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 21:00:45,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147922904] [2023-08-29 21:00:45,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:00:45,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 21:00:45,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:00:45,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 21:00:45,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-29 21:00:47,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 429 [2023-08-29 21:00:47,156 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 110 transitions, 820 flow. Second operand has 6 states, 6 states have (on average 177.33333333333334) internal successors, (1064), 6 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:47,156 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:00:47,156 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 429 [2023-08-29 21:00:47,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:00:49,818 INFO L130 PetriNetUnfolder]: 2420/4327 cut-off events. [2023-08-29 21:00:49,818 INFO L131 PetriNetUnfolder]: For 12593/12825 co-relation queries the response was YES. [2023-08-29 21:00:49,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16597 conditions, 4327 events. 2420/4327 cut-off events. For 12593/12825 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 29511 event pairs, 791 based on Foata normal form. 155/4175 useless extension candidates. Maximal degree in co-relation 16577. Up to 2183 conditions per place. [2023-08-29 21:00:49,834 INFO L137 encePairwiseOnDemand]: 415/429 looper letters, 107 selfloop transitions, 24 changer transitions 0/159 dead transitions. [2023-08-29 21:00:49,834 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 159 transitions, 1319 flow [2023-08-29 21:00:49,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 21:00:49,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 21:00:49,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1326 transitions. [2023-08-29 21:00:49,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44155844155844154 [2023-08-29 21:00:49,838 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1326 transitions. [2023-08-29 21:00:49,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1326 transitions. [2023-08-29 21:00:49,839 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:00:49,839 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1326 transitions. [2023-08-29 21:00:49,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 189.42857142857142) internal successors, (1326), 7 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:49,845 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 429.0) internal successors, (3432), 8 states have internal predecessors, (3432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:49,845 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 429.0) internal successors, (3432), 8 states have internal predecessors, (3432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:49,845 INFO L175 Difference]: Start difference. First operand has 98 places, 110 transitions, 820 flow. Second operand 7 states and 1326 transitions. [2023-08-29 21:00:49,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 159 transitions, 1319 flow [2023-08-29 21:00:49,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 159 transitions, 1282 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-29 21:00:49,866 INFO L231 Difference]: Finished difference. Result has 97 places, 108 transitions, 855 flow [2023-08-29 21:00:49,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=777, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=855, PETRI_PLACES=97, PETRI_TRANSITIONS=108} [2023-08-29 21:00:49,867 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, 3 predicate places. [2023-08-29 21:00:49,867 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 108 transitions, 855 flow [2023-08-29 21:00:49,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 177.33333333333334) internal successors, (1064), 6 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:49,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:00:49,868 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:00:49,884 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-08-29 21:00:50,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:00:50,082 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-08-29 21:00:50,082 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:00:50,082 INFO L85 PathProgramCache]: Analyzing trace with hash 173595306, now seen corresponding path program 1 times [2023-08-29 21:00:50,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:00:50,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1140063510] [2023-08-29 21:00:50,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:00:50,083 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:00:50,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:00:50,084 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:00:50,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-08-29 21:00:50,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:00:50,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-29 21:00:50,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:00:50,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:00:50,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:00:50,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:00:50,333 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:00:50,334 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:00:50,335 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 32 treesize of output 41 [2023-08-29 21:00:50,383 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 21:00:50,384 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 69 treesize of output 89 [2023-08-29 21:00:50,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:00:50,401 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:00:50,401 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:00:50,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1140063510] [2023-08-29 21:00:50,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1140063510] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:00:50,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:00:50,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 21:00:50,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406690001] [2023-08-29 21:00:50,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:00:50,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:00:50,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:00:50,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:00:50,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:00:50,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 429 [2023-08-29 21:00:50,857 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 108 transitions, 855 flow. Second operand has 3 states, 3 states have (on average 178.66666666666666) internal successors, (536), 3 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:50,857 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:00:50,857 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 429 [2023-08-29 21:00:50,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:00:52,905 INFO L130 PetriNetUnfolder]: 3028/5292 cut-off events. [2023-08-29 21:00:52,905 INFO L131 PetriNetUnfolder]: For 15939/15986 co-relation queries the response was YES. [2023-08-29 21:00:52,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20716 conditions, 5292 events. 3028/5292 cut-off events. For 15939/15986 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 35541 event pairs, 1466 based on Foata normal form. 0/4928 useless extension candidates. Maximal degree in co-relation 20696. Up to 4051 conditions per place. [2023-08-29 21:00:52,926 INFO L137 encePairwiseOnDemand]: 421/429 looper letters, 99 selfloop transitions, 7 changer transitions 0/125 dead transitions. [2023-08-29 21:00:52,926 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 125 transitions, 1146 flow [2023-08-29 21:00:52,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:00:52,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:00:52,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 586 transitions. [2023-08-29 21:00:52,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4553224553224553 [2023-08-29 21:00:52,929 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 586 transitions. [2023-08-29 21:00:52,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 586 transitions. [2023-08-29 21:00:52,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:00:52,930 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 586 transitions. [2023-08-29 21:00:52,930 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 195.33333333333334) internal successors, (586), 3 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:52,932 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:52,932 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:52,932 INFO L175 Difference]: Start difference. First operand has 97 places, 108 transitions, 855 flow. Second operand 3 states and 586 transitions. [2023-08-29 21:00:52,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 125 transitions, 1146 flow [2023-08-29 21:00:52,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 125 transitions, 1118 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-29 21:00:52,962 INFO L231 Difference]: Finished difference. Result has 97 places, 114 transitions, 907 flow [2023-08-29 21:00:52,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=829, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=907, PETRI_PLACES=97, PETRI_TRANSITIONS=114} [2023-08-29 21:00:52,962 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, 3 predicate places. [2023-08-29 21:00:52,963 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 114 transitions, 907 flow [2023-08-29 21:00:52,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 178.66666666666666) internal successors, (536), 3 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:52,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:00:52,963 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:00:52,977 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-08-29 21:00:53,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:00:53,177 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-08-29 21:00:53,177 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:00:53,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1086487809, now seen corresponding path program 1 times [2023-08-29 21:00:53,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:00:53,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1690612068] [2023-08-29 21:00:53,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:00:53,178 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:00:53,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:00:53,179 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:00:53,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-08-29 21:00:53,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:00:53,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-29 21:00:53,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:00:53,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:00:53,519 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-08-29 21:00:53,607 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-08-29 21:00:53,607 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2023-08-29 21:00:53,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:00:53,660 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:00:53,660 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:00:53,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1690612068] [2023-08-29 21:00:53,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1690612068] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:00:53,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:00:53,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 21:00:53,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000816446] [2023-08-29 21:00:53,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:00:53,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:00:53,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:00:53,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:00:53,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:00:54,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 429 [2023-08-29 21:00:54,087 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 114 transitions, 907 flow. Second operand has 3 states, 3 states have (on average 190.66666666666666) internal successors, (572), 3 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:54,087 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:00:54,087 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 429 [2023-08-29 21:00:54,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:00:55,274 INFO L130 PetriNetUnfolder]: 2360/4407 cut-off events. [2023-08-29 21:00:55,274 INFO L131 PetriNetUnfolder]: For 13165/13429 co-relation queries the response was YES. [2023-08-29 21:00:55,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16727 conditions, 4407 events. 2360/4407 cut-off events. For 13165/13429 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 32378 event pairs, 1267 based on Foata normal form. 11/4033 useless extension candidates. Maximal degree in co-relation 16706. Up to 2733 conditions per place. [2023-08-29 21:00:55,293 INFO L137 encePairwiseOnDemand]: 427/429 looper letters, 61 selfloop transitions, 1 changer transitions 0/113 dead transitions. [2023-08-29 21:00:55,293 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 113 transitions, 1029 flow [2023-08-29 21:00:55,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:00:55,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:00:55,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 598 transitions. [2023-08-29 21:00:55,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46464646464646464 [2023-08-29 21:00:55,296 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 598 transitions. [2023-08-29 21:00:55,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 598 transitions. [2023-08-29 21:00:55,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:00:55,296 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 598 transitions. [2023-08-29 21:00:55,297 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 199.33333333333334) internal successors, (598), 3 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:55,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:55,298 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:55,298 INFO L175 Difference]: Start difference. First operand has 97 places, 114 transitions, 907 flow. Second operand 3 states and 598 transitions. [2023-08-29 21:00:55,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 113 transitions, 1029 flow [2023-08-29 21:00:55,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 113 transitions, 999 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-08-29 21:00:55,315 INFO L231 Difference]: Finished difference. Result has 96 places, 113 transitions, 877 flow [2023-08-29 21:00:55,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=875, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=877, PETRI_PLACES=96, PETRI_TRANSITIONS=113} [2023-08-29 21:00:55,316 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, 2 predicate places. [2023-08-29 21:00:55,316 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 113 transitions, 877 flow [2023-08-29 21:00:55,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 190.66666666666666) internal successors, (572), 3 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:55,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:00:55,316 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:00:55,329 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-08-29 21:00:55,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:00:55,529 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-08-29 21:00:55,529 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:00:55,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1086487626, now seen corresponding path program 1 times [2023-08-29 21:00:55,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:00:55,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [620372088] [2023-08-29 21:00:55,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:00:55,530 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:00:55,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:00:55,531 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:00:55,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-08-29 21:00:55,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:00:55,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-29 21:00:55,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:00:55,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:00:55,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:00:55,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 21:00:55,819 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:00:55,820 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-29 21:00:55,821 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 32 treesize of output 41 [2023-08-29 21:00:55,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:00:55,873 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:00:55,873 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:00:55,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [620372088] [2023-08-29 21:00:55,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [620372088] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:00:55,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:00:55,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 21:00:55,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413505739] [2023-08-29 21:00:55,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:00:55,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:00:55,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:00:55,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:00:55,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:00:56,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 429 [2023-08-29 21:00:56,288 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 113 transitions, 877 flow. Second operand has 3 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:56,288 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:00:56,288 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 429 [2023-08-29 21:00:56,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:00:58,200 INFO L130 PetriNetUnfolder]: 3223/5649 cut-off events. [2023-08-29 21:00:58,201 INFO L131 PetriNetUnfolder]: For 16556/16603 co-relation queries the response was YES. [2023-08-29 21:00:58,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22360 conditions, 5649 events. 3223/5649 cut-off events. For 16556/16603 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 38219 event pairs, 1530 based on Foata normal form. 0/5286 useless extension candidates. Maximal degree in co-relation 22339. Up to 4187 conditions per place. [2023-08-29 21:00:58,223 INFO L137 encePairwiseOnDemand]: 420/429 looper letters, 101 selfloop transitions, 13 changer transitions 0/133 dead transitions. [2023-08-29 21:00:58,223 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 133 transitions, 1218 flow [2023-08-29 21:00:58,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:00:58,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:00:58,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 584 transitions. [2023-08-29 21:00:58,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45376845376845376 [2023-08-29 21:00:58,225 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 584 transitions. [2023-08-29 21:00:58,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 584 transitions. [2023-08-29 21:00:58,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:00:58,226 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 584 transitions. [2023-08-29 21:00:58,226 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 194.66666666666666) internal successors, (584), 3 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:58,227 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:58,227 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:58,227 INFO L175 Difference]: Start difference. First operand has 96 places, 113 transitions, 877 flow. Second operand 3 states and 584 transitions. [2023-08-29 21:00:58,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 133 transitions, 1218 flow [2023-08-29 21:00:58,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 133 transitions, 1217 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 21:00:58,243 INFO L231 Difference]: Finished difference. Result has 99 places, 124 transitions, 1024 flow [2023-08-29 21:00:58,244 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=876, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1024, PETRI_PLACES=99, PETRI_TRANSITIONS=124} [2023-08-29 21:00:58,244 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, 5 predicate places. [2023-08-29 21:00:58,244 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 124 transitions, 1024 flow [2023-08-29 21:00:58,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:58,245 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:00:58,245 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:00:58,257 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 (21)] Forceful destruction successful, exit code 0 [2023-08-29 21:00:58,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:00:58,452 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-08-29 21:00:58,452 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:00:58,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1086487808, now seen corresponding path program 1 times [2023-08-29 21:00:58,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:00:58,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1549571392] [2023-08-29 21:00:58,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:00:58,453 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:00:58,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:00:58,454 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:00:58,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-08-29 21:00:58,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:00:58,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-29 21:00:58,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:00:58,738 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-08-29 21:00:58,738 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 19 treesize of output 27 [2023-08-29 21:00:58,776 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-08-29 21:00:58,777 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2023-08-29 21:00:58,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:00:58,808 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:00:58,808 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:00:58,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1549571392] [2023-08-29 21:00:58,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1549571392] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:00:58,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:00:58,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 21:00:58,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405064873] [2023-08-29 21:00:58,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:00:58,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:00:58,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:00:58,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:00:58,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:00:59,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 429 [2023-08-29 21:00:59,041 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 124 transitions, 1024 flow. Second operand has 3 states, 3 states have (on average 189.66666666666666) internal successors, (569), 3 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:00:59,041 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:00:59,041 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 429 [2023-08-29 21:00:59,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:01:00,101 INFO L130 PetriNetUnfolder]: 2599/4793 cut-off events. [2023-08-29 21:01:00,101 INFO L131 PetriNetUnfolder]: For 15519/15866 co-relation queries the response was YES. [2023-08-29 21:01:00,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18844 conditions, 4793 events. 2599/4793 cut-off events. For 15519/15866 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 34755 event pairs, 1224 based on Foata normal form. 14/4463 useless extension candidates. Maximal degree in co-relation 18822. Up to 2193 conditions per place. [2023-08-29 21:01:00,126 INFO L137 encePairwiseOnDemand]: 422/429 looper letters, 55 selfloop transitions, 15 changer transitions 0/129 dead transitions. [2023-08-29 21:01:00,126 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 129 transitions, 1180 flow [2023-08-29 21:01:00,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:01:00,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:01:00,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 604 transitions. [2023-08-29 21:01:00,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4693084693084693 [2023-08-29 21:01:00,128 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 604 transitions. [2023-08-29 21:01:00,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 604 transitions. [2023-08-29 21:01:00,129 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:01:00,129 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 604 transitions. [2023-08-29 21:01:00,130 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 201.33333333333334) internal successors, (604), 3 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:01:00,131 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:01:00,131 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:01:00,131 INFO L175 Difference]: Start difference. First operand has 99 places, 124 transitions, 1024 flow. Second operand 3 states and 604 transitions. [2023-08-29 21:01:00,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 129 transitions, 1180 flow [2023-08-29 21:01:00,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 129 transitions, 1140 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-08-29 21:01:00,157 INFO L231 Difference]: Finished difference. Result has 98 places, 122 transitions, 1004 flow [2023-08-29 21:01:00,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=974, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1004, PETRI_PLACES=98, PETRI_TRANSITIONS=122} [2023-08-29 21:01:00,158 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, 4 predicate places. [2023-08-29 21:01:00,158 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 122 transitions, 1004 flow [2023-08-29 21:01:00,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 189.66666666666666) internal successors, (569), 3 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:01:00,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:01:00,160 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:01:00,177 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Ended with exit code 0 [2023-08-29 21:01:00,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:01:00,374 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-08-29 21:01:00,375 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:01:00,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1690246598, now seen corresponding path program 1 times [2023-08-29 21:01:00,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:01:00,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [956966942] [2023-08-29 21:01:00,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:01:00,375 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:01:00,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:01:00,376 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:01:00,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-08-29 21:01:00,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:01:00,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-29 21:01:00,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 21:01:00,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:01:00,593 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 21:01:00,593 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 21:01:00,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [956966942] [2023-08-29 21:01:00,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [956966942] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:01:00,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:01:00,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 21:01:00,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591834865] [2023-08-29 21:01:00,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:01:00,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:01:00,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 21:01:00,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:01:00,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:01:00,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 429 [2023-08-29 21:01:00,606 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 122 transitions, 1004 flow. Second operand has 3 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:01:00,606 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:01:00,606 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 429 [2023-08-29 21:01:00,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:01:02,125 INFO L130 PetriNetUnfolder]: 742/1444 cut-off events. [2023-08-29 21:01:02,125 INFO L131 PetriNetUnfolder]: For 2456/2581 co-relation queries the response was YES. [2023-08-29 21:01:02,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4936 conditions, 1444 events. 742/1444 cut-off events. For 2456/2581 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 8591 event pairs, 197 based on Foata normal form. 20/1249 useless extension candidates. Maximal degree in co-relation 4914. Up to 889 conditions per place. [2023-08-29 21:01:02,132 INFO L137 encePairwiseOnDemand]: 427/429 looper letters, 42 selfloop transitions, 1 changer transitions 1/69 dead transitions. [2023-08-29 21:01:02,132 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 69 transitions, 536 flow [2023-08-29 21:01:02,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:01:02,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:01:02,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 594 transitions. [2023-08-29 21:01:02,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46153846153846156 [2023-08-29 21:01:02,143 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 594 transitions. [2023-08-29 21:01:02,143 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 594 transitions. [2023-08-29 21:01:02,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:01:02,143 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 594 transitions. [2023-08-29 21:01:02,145 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 198.0) internal successors, (594), 3 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:01:02,146 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:01:02,146 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:01:02,146 INFO L175 Difference]: Start difference. First operand has 98 places, 122 transitions, 1004 flow. Second operand 3 states and 594 transitions. [2023-08-29 21:01:02,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 69 transitions, 536 flow [2023-08-29 21:01:02,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 69 transitions, 384 flow, removed 28 selfloop flow, removed 20 redundant places. [2023-08-29 21:01:02,152 INFO L231 Difference]: Finished difference. Result has 67 places, 62 transitions, 274 flow [2023-08-29 21:01:02,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=274, PETRI_PLACES=67, PETRI_TRANSITIONS=62} [2023-08-29 21:01:02,154 INFO L281 CegarLoopForPetriNet]: 94 programPoint places, -27 predicate places. [2023-08-29 21:01:02,154 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 62 transitions, 274 flow [2023-08-29 21:01:02,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:01:02,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:01:02,155 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:01:02,170 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2023-08-29 21:01:02,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:01:02,368 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 60 more)] === [2023-08-29 21:01:02,368 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:01:02,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1706628655, now seen corresponding path program 1 times [2023-08-29 21:01:02,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 21:01:02,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [370604753] [2023-08-29 21:01:02,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:01:02,369 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:01:02,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 21:01:02,370 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 21:01:02,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-08-29 21:01:02,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 21:01:02,660 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 21:01:02,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 21:01:02,839 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2023-08-29 21:01:02,839 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 21:01:02,840 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK (62 of 63 remaining) [2023-08-29 21:01:02,841 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK (61 of 63 remaining) [2023-08-29 21:01:02,841 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 63 remaining) [2023-08-29 21:01:02,842 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 63 remaining) [2023-08-29 21:01:02,842 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 63 remaining) [2023-08-29 21:01:02,842 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 63 remaining) [2023-08-29 21:01:02,842 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 63 remaining) [2023-08-29 21:01:02,842 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 63 remaining) [2023-08-29 21:01:02,842 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 63 remaining) [2023-08-29 21:01:02,843 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 63 remaining) [2023-08-29 21:01:02,843 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 63 remaining) [2023-08-29 21:01:02,843 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 63 remaining) [2023-08-29 21:01:02,843 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 63 remaining) [2023-08-29 21:01:02,843 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 63 remaining) [2023-08-29 21:01:02,843 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 63 remaining) [2023-08-29 21:01:02,843 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 63 remaining) [2023-08-29 21:01:02,844 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 63 remaining) [2023-08-29 21:01:02,844 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr37REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 63 remaining) [2023-08-29 21:01:02,844 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 63 remaining) [2023-08-29 21:01:02,844 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 63 remaining) [2023-08-29 21:01:02,844 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 63 remaining) [2023-08-29 21:01:02,844 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 63 remaining) [2023-08-29 21:01:02,844 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 63 remaining) [2023-08-29 21:01:02,845 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 63 remaining) [2023-08-29 21:01:02,845 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK (38 of 63 remaining) [2023-08-29 21:01:02,845 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 63 remaining) [2023-08-29 21:01:02,845 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 63 remaining) [2023-08-29 21:01:02,845 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK (35 of 63 remaining) [2023-08-29 21:01:02,845 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 63 remaining) [2023-08-29 21:01:02,846 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 63 remaining) [2023-08-29 21:01:02,846 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 63 remaining) [2023-08-29 21:01:02,846 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr40REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 63 remaining) [2023-08-29 21:01:02,846 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 63 remaining) [2023-08-29 21:01:02,846 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 63 remaining) [2023-08-29 21:01:02,846 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 63 remaining) [2023-08-29 21:01:02,846 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 63 remaining) [2023-08-29 21:01:02,847 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_LEAK (26 of 63 remaining) [2023-08-29 21:01:02,847 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 63 remaining) [2023-08-29 21:01:02,847 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 63 remaining) [2023-08-29 21:01:02,847 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK (23 of 63 remaining) [2023-08-29 21:01:02,847 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 63 remaining) [2023-08-29 21:01:02,847 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 63 remaining) [2023-08-29 21:01:02,848 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_LEAK (20 of 63 remaining) [2023-08-29 21:01:02,848 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (19 of 63 remaining) [2023-08-29 21:01:02,848 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 63 remaining) [2023-08-29 21:01:02,848 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 63 remaining) [2023-08-29 21:01:02,848 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 63 remaining) [2023-08-29 21:01:02,848 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 63 remaining) [2023-08-29 21:01:02,848 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 63 remaining) [2023-08-29 21:01:02,849 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 63 remaining) [2023-08-29 21:01:02,849 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 63 remaining) [2023-08-29 21:01:02,849 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 63 remaining) [2023-08-29 21:01:02,849 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 63 remaining) [2023-08-29 21:01:02,849 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 63 remaining) [2023-08-29 21:01:02,849 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 63 remaining) [2023-08-29 21:01:02,849 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 63 remaining) [2023-08-29 21:01:02,850 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 63 remaining) [2023-08-29 21:01:02,850 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 63 remaining) [2023-08-29 21:01:02,850 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 63 remaining) [2023-08-29 21:01:02,850 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 63 remaining) [2023-08-29 21:01:02,850 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 63 remaining) [2023-08-29 21:01:02,850 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 63 remaining) [2023-08-29 21:01:02,850 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location my_callbackErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 63 remaining) [2023-08-29 21:01:02,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2023-08-29 21:01:03,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 21:01:03,051 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:01:03,056 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-29 21:01:03,056 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-29 21:01:03,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 09:01:03 BasicIcfg [2023-08-29 21:01:03,090 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-29 21:01:03,091 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-29 21:01:03,091 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-29 21:01:03,091 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-29 21:01:03,092 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:52:40" (3/4) ... [2023-08-29 21:01:03,094 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-08-29 21:01:03,095 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-29 21:01:03,095 INFO L158 Benchmark]: Toolchain (without parser) took 504464.61ms. Allocated memory was 71.3MB in the beginning and 499.1MB in the end (delta: 427.8MB). Free memory was 36.6MB in the beginning and 134.4MB in the end (delta: -97.8MB). Peak memory consumption was 330.9MB. Max. memory is 16.1GB. [2023-08-29 21:01:03,095 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 52.4MB. Free memory is still 29.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 21:01:03,096 INFO L158 Benchmark]: CACSL2BoogieTranslator took 899.30ms. Allocated memory was 71.3MB in the beginning and 86.0MB in the end (delta: 14.7MB). Free memory was 36.5MB in the beginning and 58.8MB in the end (delta: -22.3MB). Peak memory consumption was 18.7MB. Max. memory is 16.1GB. [2023-08-29 21:01:03,096 INFO L158 Benchmark]: Boogie Procedure Inliner took 88.49ms. Allocated memory is still 86.0MB. Free memory was 58.8MB in the beginning and 55.0MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-29 21:01:03,097 INFO L158 Benchmark]: Boogie Preprocessor took 55.39ms. Allocated memory is still 86.0MB. Free memory was 55.0MB in the beginning and 51.6MB in the end (delta: 3.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 21:01:03,099 INFO L158 Benchmark]: RCFGBuilder took 991.14ms. Allocated memory is still 86.0MB. Free memory was 51.6MB in the beginning and 50.7MB in the end (delta: 935.7kB). Peak memory consumption was 26.9MB. Max. memory is 16.1GB. [2023-08-29 21:01:03,100 INFO L158 Benchmark]: TraceAbstraction took 502420.29ms. Allocated memory was 86.0MB in the beginning and 499.1MB in the end (delta: 413.1MB). Free memory was 49.7MB in the beginning and 134.4MB in the end (delta: -84.7MB). Peak memory consumption was 329.4MB. Max. memory is 16.1GB. [2023-08-29 21:01:03,100 INFO L158 Benchmark]: Witness Printer took 3.80ms. Allocated memory is still 499.1MB. Free memory is still 134.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 21:01:03,102 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 52.4MB. Free memory is still 29.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 899.30ms. Allocated memory was 71.3MB in the beginning and 86.0MB in the end (delta: 14.7MB). Free memory was 36.5MB in the beginning and 58.8MB in the end (delta: -22.3MB). Peak memory consumption was 18.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 88.49ms. Allocated memory is still 86.0MB. Free memory was 58.8MB in the beginning and 55.0MB in the end (delta: 3.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 55.39ms. Allocated memory is still 86.0MB. Free memory was 55.0MB in the beginning and 51.6MB in the end (delta: 3.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 991.14ms. Allocated memory is still 86.0MB. Free memory was 51.6MB in the beginning and 50.7MB in the end (delta: 935.7kB). Peak memory consumption was 26.9MB. Max. memory is 16.1GB. * TraceAbstraction took 502420.29ms. Allocated memory was 86.0MB in the beginning and 499.1MB in the end (delta: 413.1MB). Free memory was 49.7MB in the beginning and 134.4MB in the end (delta: -84.7MB). Peak memory consumption was 329.4MB. Max. memory is 16.1GB. * Witness Printer took 3.80ms. Allocated memory is still 499.1MB. Free memory is still 134.4MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 436.8s, 207 PlacesBefore, 94 PlacesAfterwards, 207 TransitionsBefore, 91 TransitionsAfterwards, 6612 CoEnabledTransitionPairs, 7 FixpointIterations, 108 TrivialSequentialCompositions, 95 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 11 ConcurrentYvCompositions, 3 ChoiceCompositions, 220 TotalNumberOfCompositions, 33684 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 10574, independent: 9865, independent conditional: 0, independent unconditional: 9865, dependent: 709, dependent conditional: 0, dependent unconditional: 709, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3768, independent: 3647, independent conditional: 0, independent unconditional: 3647, dependent: 121, dependent conditional: 0, dependent unconditional: 121, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 10574, independent: 6218, independent conditional: 0, independent unconditional: 6218, dependent: 588, dependent conditional: 0, dependent unconditional: 588, unknown: 3768, unknown conditional: 0, unknown unconditional: 3768] , Statistics on independence cache: Total cache size (in pairs): 645, Positive cache size: 592, Positive conditional cache size: 0, Positive unconditional cache size: 592, Negative cache size: 53, Negative conditional cache size: 0, Negative unconditional cache size: 53, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - UnprovableResult [Line: 1675]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1675. Possible FailurePath: [L1676] 0 pthread_t t1,t2; [L1745] CALL, EXPR 0 my_drv_init() [L1739] 0 return 0; [L1745] RET, EXPR 0 my_drv_init() [L1745] 0 int ret = my_drv_init(); [L1746] COND TRUE 0 ret==0 [L1747] 0 int probe_ret; [L1748] 0 struct my_data data; [L1749] CALL, EXPR 0 my_drv_probe(&data) [L1706] 0 struct device *d = &data->dev; [L1708] 0 data->shared.a = 0 [L1709] 0 data->shared.b = 0 [L1710] 0 int res = __VERIFIER_nondet_int(); [L1711] COND FALSE 0 !(\read(res)) [L1713] FCALL, FORK 0 pthread_create(&t1, ((void *)0), my_callback, (void *)d) VAL [arg={7:24}, d={7:24}, data={7:0}, data={7:0}, pthread_create(&t1, ((void *)0), my_callback, (void *)d)=0, res=0, t1={3:0}, t2={4:0}] [L1689] 1 struct device *dev = (struct device*)arg; [L1690] 1 struct my_data *data; [L1691] 1 const typeof( ((struct my_data *)0)->dev ) *__mptr = (dev); [L1691] 1 data = ({ const typeof( ((struct my_data *)0)->dev ) *__mptr = (dev); (struct my_data *)( (char *)__mptr - ((unsigned long) &((struct my_data *)0)->dev) );}) [L1714] FCALL, FORK 0 pthread_create(&t2, ((void *)0), my_callback, (void *)d) VAL [__mptr={7:24}, arg={7:24}, arg={7:24}, d={7:24}, data={7:0}, data={7:0}, data={7:0}, dev={7:24}, pthread_create(&t2, ((void *)0), my_callback, (void *)d)=1, res=0, t1={3:0}, t2={4:0}] [L1715] 0 return 0; [L1749] RET, EXPR 0 my_drv_probe(&data) [L1749] 0 probe_ret = my_drv_probe(&data) VAL [__mptr={7:24}, arg={7:24}, arg={7:24}, data={7:0}, data={7:0}, dev={7:24}, my_drv_probe(&data)=0, probe_ret=0, ret=0, t1={3:0}, t2={4:0}] [L1750] COND TRUE 0 probe_ret==0 [L1751] CALL 0 my_drv_disconnect(&data) [L1721] 0 void *status; VAL [__mptr={7:24}, arg={7:24}, arg={7:24}, data={7:0}, data={7:0}, data={7:0}, dev={7:24}, status={5:0}, t1={3:0}, t2={4:0}] [L1723] 0 data->shared.a = 3 VAL [__mptr={7:24}, arg={7:24}, arg={7:24}, data={7:0}, data={7:0}, data={7:0}, dev={7:24}, status={5:0}, t1={3:0}, t2={4:0}] [L1694] 1 data->shared.a = 1 VAL [__mptr={7:24}, arg={7:24}, arg={7:24}, data={7:0}, dev={7:24}, t1={3:0}, t2={4:0}] [L1726] 0 data->shared.b = 3 VAL [__mptr={7:24}, arg={7:24}, arg={7:24}, data={7:0}, data={7:0}, data={7:0}, dev={7:24}, status={5:0}, t1={3:0}, t2={4:0}] [L1729] EXPR 0 data->shared.a [L1729] CALL 0 ldv_assert(data->shared.a==3) [L1675] COND TRUE 0 !expression [L1675] 0 reach_error() VAL [\old(expression)=0, __mptr={7:24}, arg={7:24}, arg={7:24}, data={7:0}, dev={7:24}, expression=0, t1={3:0}, t2={4:0}] - UnprovableResult [Line: 1744]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1675]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1675]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1675]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1675]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1675]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1714]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 1713]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 4 procedures, 225 locations, 63 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 502.3s, OverallIterations: 23, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 53.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 437.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4807 SdHoareTripleChecker+Valid, 46.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2791 mSDsluCounter, 442 SdHoareTripleChecker+Invalid, 43.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 173 IncrementalHoareTripleChecker+Unchecked, 217 mSDsCounter, 222 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7135 IncrementalHoareTripleChecker+Invalid, 7530 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 222 mSolverCounterUnsat, 225 mSDtfsCounter, 7135 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 124 GetRequests, 72 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1024occurred in iteration=20, InterpolantAutomatonStates: 86, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 2.2s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 144 NumberOfCodeBlocks, 144 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 111 ConstructedInterpolants, 7 QuantifiedInterpolants, 1317 SizeOfPredicates, 100 NumberOfNonLiveVariables, 3316 ConjunctsInSsa, 232 ConjunctsInUnsatCore, 22 InterpolantComputations, 22 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-08-29 21:01:03,153 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample