./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/weaver/chl-name-comparator-subst.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/weaver/chl-name-comparator-subst.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 83223bd52506e4247e7ac7ce7a49284be0292b773b9e827e6221f58042ba0602 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 05:02:23,292 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 05:02:23,294 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 05:02:23,339 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 05:02:23,340 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 05:02:23,343 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 05:02:23,344 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 05:02:23,347 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 05:02:23,349 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 05:02:23,355 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 05:02:23,356 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 05:02:23,358 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 05:02:23,359 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 05:02:23,361 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 05:02:23,362 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 05:02:23,369 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 05:02:23,370 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 05:02:23,371 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 05:02:23,373 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 05:02:23,377 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 05:02:23,379 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 05:02:23,380 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 05:02:23,381 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 05:02:23,382 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 05:02:23,389 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 05:02:23,389 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 05:02:23,390 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 05:02:23,391 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 05:02:23,392 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 05:02:23,393 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 05:02:23,393 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 05:02:23,394 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 05:02:23,395 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 05:02:23,396 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 05:02:23,397 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 05:02:23,397 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 05:02:23,398 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 05:02:23,398 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 05:02:23,398 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 05:02:23,399 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 05:02:23,399 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 05:02:23,401 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-30 05:02:23,434 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 05:02:23,434 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 05:02:23,435 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 05:02:23,435 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 05:02:23,436 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 05:02:23,437 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 05:02:23,437 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 05:02:23,437 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 05:02:23,438 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 05:02:23,438 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 05:02:23,439 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 05:02:23,439 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 05:02:23,439 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 05:02:23,439 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 05:02:23,439 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 05:02:23,440 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 05:02:23,440 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 05:02:23,440 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 05:02:23,440 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 05:02:23,440 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 05:02:23,441 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 05:02:23,441 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 05:02:23,441 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 05:02:23,441 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 05:02:23,441 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 05:02:23,442 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 05:02:23,442 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 05:02:23,442 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 05:02:23,442 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 05:02:23,442 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 05:02:23,443 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 05:02:23,443 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 05:02:23,443 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 05:02:23,443 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 05:02:23,444 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 83223bd52506e4247e7ac7ce7a49284be0292b773b9e827e6221f58042ba0602 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 05:02:23,789 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 05:02:23,808 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 05:02:23,812 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 05:02:23,813 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 05:02:23,813 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 05:02:23,814 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-name-comparator-subst.wvr.c [2023-08-30 05:02:25,152 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 05:02:25,373 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 05:02:25,376 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-name-comparator-subst.wvr.c [2023-08-30 05:02:25,383 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc1f3502d/b124721edc904db6b2ab6fcefb450557/FLAGe7d4abae9 [2023-08-30 05:02:25,395 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc1f3502d/b124721edc904db6b2ab6fcefb450557 [2023-08-30 05:02:25,397 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 05:02:25,399 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 05:02:25,400 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 05:02:25,400 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 05:02:25,411 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 05:02:25,412 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:02:25" (1/1) ... [2023-08-30 05:02:25,413 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@abd9212 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:02:25, skipping insertion in model container [2023-08-30 05:02:25,413 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:02:25" (1/1) ... [2023-08-30 05:02:25,419 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 05:02:25,452 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 05:02:25,660 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-name-comparator-subst.wvr.c[4836,4849] [2023-08-30 05:02:25,678 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 05:02:25,692 ERROR L324 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-08-30 05:02:25,694 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@29cf03e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:02:25, skipping insertion in model container [2023-08-30 05:02:25,694 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 05:02:25,695 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-08-30 05:02:25,697 INFO L158 Benchmark]: Toolchain (without parser) took 297.54ms. Allocated memory is still 77.6MB. Free memory was 46.3MB in the beginning and 55.3MB in the end (delta: -9.0MB). Peak memory consumption was 9.4MB. Max. memory is 16.1GB. [2023-08-30 05:02:25,698 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 56.6MB. Free memory is still 34.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 05:02:25,699 INFO L158 Benchmark]: CACSL2BoogieTranslator took 295.11ms. Allocated memory is still 77.6MB. Free memory was 46.1MB in the beginning and 55.7MB in the end (delta: -9.6MB). Peak memory consumption was 9.4MB. Max. memory is 16.1GB. [2023-08-30 05:02:25,700 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 56.6MB. Free memory is still 34.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 295.11ms. Allocated memory is still 77.6MB. Free memory was 46.1MB in the beginning and 55.7MB in the end (delta: -9.6MB). Peak memory consumption was 9.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 151]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/weaver/chl-name-comparator-subst.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 83223bd52506e4247e7ac7ce7a49284be0292b773b9e827e6221f58042ba0602 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 05:02:27,557 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 05:02:27,560 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 05:02:27,604 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 05:02:27,605 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 05:02:27,608 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 05:02:27,609 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 05:02:27,612 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 05:02:27,614 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 05:02:27,619 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 05:02:27,620 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 05:02:27,622 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 05:02:27,623 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 05:02:27,624 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 05:02:27,625 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 05:02:27,629 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 05:02:27,630 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 05:02:27,630 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 05:02:27,631 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 05:02:27,637 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 05:02:27,639 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 05:02:27,645 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 05:02:27,646 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 05:02:27,647 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 05:02:27,650 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 05:02:27,653 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 05:02:27,654 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 05:02:27,654 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 05:02:27,655 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 05:02:27,656 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 05:02:27,657 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 05:02:27,658 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 05:02:27,659 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 05:02:27,660 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 05:02:27,661 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 05:02:27,661 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 05:02:27,662 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 05:02:27,662 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 05:02:27,662 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 05:02:27,663 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 05:02:27,663 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 05:02:27,665 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-08-30 05:02:27,699 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 05:02:27,699 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 05:02:27,701 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 05:02:27,701 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 05:02:27,702 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 05:02:27,702 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 05:02:27,702 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 05:02:27,703 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 05:02:27,703 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 05:02:27,703 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 05:02:27,704 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 05:02:27,704 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 05:02:27,704 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 05:02:27,704 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 05:02:27,705 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 05:02:27,705 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 05:02:27,705 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 05:02:27,705 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 05:02:27,705 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 05:02:27,706 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 05:02:27,706 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-08-30 05:02:27,706 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-08-30 05:02:27,706 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 05:02:27,706 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 05:02:27,707 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 05:02:27,707 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 05:02:27,707 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 05:02:27,707 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 05:02:27,707 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 05:02:27,708 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 05:02:27,708 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-08-30 05:02:27,708 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-08-30 05:02:27,708 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 05:02:27,708 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 05:02:27,709 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 05:02:27,709 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-08-30 05:02:27,709 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 05:02:27,709 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 83223bd52506e4247e7ac7ce7a49284be0292b773b9e827e6221f58042ba0602 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 05:02:28,034 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 05:02:28,056 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 05:02:28,058 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 05:02:28,059 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 05:02:28,060 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 05:02:28,062 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-name-comparator-subst.wvr.c [2023-08-30 05:02:29,290 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 05:02:29,541 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 05:02:29,542 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-name-comparator-subst.wvr.c [2023-08-30 05:02:29,551 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/053fa4e31/14068d33b02448fcbf3fde8303aed6c2/FLAG56f33095f [2023-08-30 05:02:29,563 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/053fa4e31/14068d33b02448fcbf3fde8303aed6c2 [2023-08-30 05:02:29,565 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 05:02:29,567 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 05:02:29,568 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 05:02:29,568 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 05:02:29,570 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 05:02:29,571 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:02:29" (1/1) ... [2023-08-30 05:02:29,573 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@311b8f8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:02:29, skipping insertion in model container [2023-08-30 05:02:29,573 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:02:29" (1/1) ... [2023-08-30 05:02:29,578 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 05:02:29,599 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 05:02:29,757 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-name-comparator-subst.wvr.c[4836,4849] [2023-08-30 05:02:29,771 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 05:02:29,784 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-08-30 05:02:29,790 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 05:02:29,808 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-name-comparator-subst.wvr.c[4836,4849] [2023-08-30 05:02:29,812 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 05:02:29,826 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 05:02:29,875 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-name-comparator-subst.wvr.c[4836,4849] [2023-08-30 05:02:29,888 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 05:02:29,923 INFO L208 MainTranslator]: Completed translation [2023-08-30 05:02:29,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:02:29 WrapperNode [2023-08-30 05:02:29,924 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 05:02:29,925 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 05:02:29,925 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 05:02:29,925 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 05:02:29,931 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:02:29" (1/1) ... [2023-08-30 05:02:29,941 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:02:29" (1/1) ... [2023-08-30 05:02:29,965 INFO L138 Inliner]: procedures = 28, calls = 44, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 297 [2023-08-30 05:02:29,965 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 05:02:29,966 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 05:02:29,966 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 05:02:29,966 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 05:02:29,975 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:02:29" (1/1) ... [2023-08-30 05:02:29,976 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:02:29" (1/1) ... [2023-08-30 05:02:29,983 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:02:29" (1/1) ... [2023-08-30 05:02:29,987 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:02:29" (1/1) ... [2023-08-30 05:02:30,000 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:02:29" (1/1) ... [2023-08-30 05:02:30,015 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:02:29" (1/1) ... [2023-08-30 05:02:30,020 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:02:29" (1/1) ... [2023-08-30 05:02:30,026 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:02:29" (1/1) ... [2023-08-30 05:02:30,030 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 05:02:30,033 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 05:02:30,034 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 05:02:30,034 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 05:02:30,035 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:02:29" (1/1) ... [2023-08-30 05:02:30,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 05:02:30,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:02:30,070 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 05:02:30,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 05:02:30,120 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 05:02:30,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-08-30 05:02:30,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 05:02:30,121 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-08-30 05:02:30,121 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 05:02:30,121 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 05:02:30,121 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 05:02:30,122 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 05:02:30,122 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 05:02:30,122 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 05:02:30,122 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 05:02:30,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 05:02:30,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 05:02:30,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 05:02:30,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-08-30 05:02:30,124 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 05:02:30,310 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 05:02:30,311 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 05:02:30,782 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 05:02:30,792 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 05:02:30,792 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-30 05:02:30,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:02:30 BoogieIcfgContainer [2023-08-30 05:02:30,795 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 05:02:30,797 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 05:02:30,797 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 05:02:30,800 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 05:02:30,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 05:02:29" (1/3) ... [2023-08-30 05:02:30,801 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77607067 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:02:30, skipping insertion in model container [2023-08-30 05:02:30,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:02:29" (2/3) ... [2023-08-30 05:02:30,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77607067 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:02:30, skipping insertion in model container [2023-08-30 05:02:30,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:02:30" (3/3) ... [2023-08-30 05:02:30,803 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-subst.wvr.c [2023-08-30 05:02:30,819 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 05:02:30,819 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2023-08-30 05:02:30,819 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 05:02:30,960 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 05:02:30,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 349 places, 365 transitions, 754 flow [2023-08-30 05:02:31,122 INFO L130 PetriNetUnfolder]: 26/362 cut-off events. [2023-08-30 05:02:31,122 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 05:02:31,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 375 conditions, 362 events. 26/362 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 927 event pairs, 0 based on Foata normal form. 0/314 useless extension candidates. Maximal degree in co-relation 263. Up to 2 conditions per place. [2023-08-30 05:02:31,132 INFO L82 GeneralOperation]: Start removeDead. Operand has 349 places, 365 transitions, 754 flow [2023-08-30 05:02:31,140 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 342 places, 358 transitions, 734 flow [2023-08-30 05:02:31,144 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 05:02:31,152 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 342 places, 358 transitions, 734 flow [2023-08-30 05:02:31,155 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 342 places, 358 transitions, 734 flow [2023-08-30 05:02:31,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 342 places, 358 transitions, 734 flow [2023-08-30 05:02:31,230 INFO L130 PetriNetUnfolder]: 26/358 cut-off events. [2023-08-30 05:02:31,231 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 05:02:31,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 371 conditions, 358 events. 26/358 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 926 event pairs, 0 based on Foata normal form. 0/311 useless extension candidates. Maximal degree in co-relation 263. Up to 2 conditions per place. [2023-08-30 05:02:31,251 INFO L119 LiptonReduction]: Number of co-enabled transitions 31488 [2023-08-30 05:02:52,210 INFO L134 LiptonReduction]: Checked pairs total: 27812 [2023-08-30 05:02:52,211 INFO L136 LiptonReduction]: Total number of compositions: 416 [2023-08-30 05:02:52,223 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 05:02:52,229 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;@47f57f5c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 05:02:52,229 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2023-08-30 05:02:52,233 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 05:02:52,233 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 05:02:52,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:02:52,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 05:02:52,235 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:02:52,239 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:02:52,239 INFO L85 PathProgramCache]: Analyzing trace with hash 47277, now seen corresponding path program 1 times [2023-08-30 05:02:52,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:02:52,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1056314872] [2023-08-30 05:02:52,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:02:52,253 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:02:52,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:02:52,260 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:02:52,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-08-30 05:02:52,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:02:52,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 05:02:52,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:02:52,609 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2023-08-30 05:02:52,610 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 42 [2023-08-30 05:02:52,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:02:52,681 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 05:02:52,682 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:02:52,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1056314872] [2023-08-30 05:02:52,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1056314872] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:02:52,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:02:52,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 05:02:52,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685381257] [2023-08-30 05:02:52,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:02:52,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 05:02:52,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:02:52,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 05:02:52,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 05:02:52,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 331 out of 781 [2023-08-30 05:02:52,864 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 45 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 331.6666666666667) internal successors, (995), 3 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:02:52,864 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:02:52,864 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 331 of 781 [2023-08-30 05:02:52,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:02:53,813 INFO L130 PetriNetUnfolder]: 3633/5128 cut-off events. [2023-08-30 05:02:53,813 INFO L131 PetriNetUnfolder]: For 190/190 co-relation queries the response was YES. [2023-08-30 05:02:53,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10447 conditions, 5128 events. 3633/5128 cut-off events. For 190/190 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 23417 event pairs, 2856 based on Foata normal form. 0/2051 useless extension candidates. Maximal degree in co-relation 4490. Up to 2566 conditions per place. [2023-08-30 05:02:53,845 INFO L137 encePairwiseOnDemand]: 777/781 looper letters, 84 selfloop transitions, 2 changer transitions 0/86 dead transitions. [2023-08-30 05:02:53,845 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 86 transitions, 380 flow [2023-08-30 05:02:53,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:02:53,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:02:53,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1082 transitions. [2023-08-30 05:02:53,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46180110968843363 [2023-08-30 05:02:53,863 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1082 transitions. [2023-08-30 05:02:53,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1082 transitions. [2023-08-30 05:02:53,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:02:53,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1082 transitions. [2023-08-30 05:02:53,874 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 360.6666666666667) internal successors, (1082), 3 states have internal predecessors, (1082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:02:53,884 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 781.0) internal successors, (3124), 4 states have internal predecessors, (3124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:02:53,888 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 781.0) internal successors, (3124), 4 states have internal predecessors, (3124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:02:53,890 INFO L175 Difference]: Start difference. First operand has 51 places, 45 transitions, 108 flow. Second operand 3 states and 1082 transitions. [2023-08-30 05:02:53,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 86 transitions, 380 flow [2023-08-30 05:02:53,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 86 transitions, 356 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-30 05:02:53,900 INFO L231 Difference]: Finished difference. Result has 47 places, 45 transitions, 106 flow [2023-08-30 05:02:53,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=47, PETRI_TRANSITIONS=45} [2023-08-30 05:02:53,906 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -4 predicate places. [2023-08-30 05:02:53,907 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 45 transitions, 106 flow [2023-08-30 05:02:53,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 331.6666666666667) internal successors, (995), 3 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:02:53,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:02:53,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 05:02:53,924 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 [2023-08-30 05:02:54,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:02:54,124 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:02:54,125 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:02:54,125 INFO L85 PathProgramCache]: Analyzing trace with hash 47276, now seen corresponding path program 1 times [2023-08-30 05:02:54,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:02:54,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [339846634] [2023-08-30 05:02:54,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:02:54,135 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:02:54,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:02:54,157 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:02:54,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-08-30 05:02:54,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:02:54,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 05:02:54,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:02:54,344 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2023-08-30 05:02:54,344 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 50 [2023-08-30 05:02:54,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:02:54,362 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 05:02:54,362 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:02:54,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [339846634] [2023-08-30 05:02:54,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [339846634] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:02:54,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:02:54,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 05:02:54,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522753960] [2023-08-30 05:02:54,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:02:54,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 05:02:54,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:02:54,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 05:02:54,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 05:02:54,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 332 out of 781 [2023-08-30 05:02:54,467 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 45 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 332.6666666666667) internal successors, (998), 3 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:02:54,467 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:02:54,467 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 332 of 781 [2023-08-30 05:02:54,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:02:55,256 INFO L130 PetriNetUnfolder]: 3633/5126 cut-off events. [2023-08-30 05:02:55,256 INFO L131 PetriNetUnfolder]: For 40/40 co-relation queries the response was YES. [2023-08-30 05:02:55,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10323 conditions, 5126 events. 3633/5126 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 23463 event pairs, 2856 based on Foata normal form. 0/2053 useless extension candidates. Maximal degree in co-relation 5159. Up to 5126 conditions per place. [2023-08-30 05:02:55,284 INFO L137 encePairwiseOnDemand]: 779/781 looper letters, 43 selfloop transitions, 1 changer transitions 0/44 dead transitions. [2023-08-30 05:02:55,284 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 44 transitions, 192 flow [2023-08-30 05:02:55,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:02:55,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:02:55,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1040 transitions. [2023-08-30 05:02:55,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44387537345283823 [2023-08-30 05:02:55,288 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1040 transitions. [2023-08-30 05:02:55,289 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1040 transitions. [2023-08-30 05:02:55,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:02:55,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1040 transitions. [2023-08-30 05:02:55,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 346.6666666666667) internal successors, (1040), 3 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:02:55,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 781.0) internal successors, (3124), 4 states have internal predecessors, (3124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:02:55,297 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 781.0) internal successors, (3124), 4 states have internal predecessors, (3124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:02:55,297 INFO L175 Difference]: Start difference. First operand has 47 places, 45 transitions, 106 flow. Second operand 3 states and 1040 transitions. [2023-08-30 05:02:55,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 44 transitions, 192 flow [2023-08-30 05:02:55,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 44 transitions, 190 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:02:55,300 INFO L231 Difference]: Finished difference. Result has 47 places, 44 transitions, 104 flow [2023-08-30 05:02:55,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=47, PETRI_TRANSITIONS=44} [2023-08-30 05:02:55,301 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -4 predicate places. [2023-08-30 05:02:55,302 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 44 transitions, 104 flow [2023-08-30 05:02:55,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 332.6666666666667) internal successors, (998), 3 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:02:55,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:02:55,303 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 05:02:55,315 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-08-30 05:02:55,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:02:55,513 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:02:55,513 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:02:55,514 INFO L85 PathProgramCache]: Analyzing trace with hash 47387, now seen corresponding path program 1 times [2023-08-30 05:02:55,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:02:55,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [894217110] [2023-08-30 05:02:55,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:02:55,514 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:02:55,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:02:55,516 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:02:55,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-08-30 05:02:55,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:02:55,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 05:02:55,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:02:55,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:02:55,597 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 05:02:55,597 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:02:55,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [894217110] [2023-08-30 05:02:55,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [894217110] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:02:55,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:02:55,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 05:02:55,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890795332] [2023-08-30 05:02:55,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:02:55,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 05:02:55,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:02:55,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 05:02:55,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 05:02:55,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 335 out of 781 [2023-08-30 05:02:55,632 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 44 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 335.6666666666667) internal successors, (1007), 3 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:02:55,632 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:02:55,632 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 335 of 781 [2023-08-30 05:02:55,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:02:56,101 INFO L130 PetriNetUnfolder]: 1817/2565 cut-off events. [2023-08-30 05:02:56,101 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2023-08-30 05:02:56,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5170 conditions, 2565 events. 1817/2565 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 10289 event pairs, 1428 based on Foata normal form. 1/1029 useless extension candidates. Maximal degree in co-relation 5162. Up to 2565 conditions per place. [2023-08-30 05:02:56,114 INFO L137 encePairwiseOnDemand]: 776/781 looper letters, 42 selfloop transitions, 2 changer transitions 0/44 dead transitions. [2023-08-30 05:02:56,115 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 44 transitions, 192 flow [2023-08-30 05:02:56,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:02:56,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:02:56,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1052 transitions. [2023-08-30 05:02:56,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44899701237729406 [2023-08-30 05:02:56,118 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1052 transitions. [2023-08-30 05:02:56,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1052 transitions. [2023-08-30 05:02:56,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:02:56,141 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1052 transitions. [2023-08-30 05:02:56,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 350.6666666666667) internal successors, (1052), 3 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:02:56,148 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 781.0) internal successors, (3124), 4 states have internal predecessors, (3124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:02:56,149 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 781.0) internal successors, (3124), 4 states have internal predecessors, (3124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:02:56,149 INFO L175 Difference]: Start difference. First operand has 47 places, 44 transitions, 104 flow. Second operand 3 states and 1052 transitions. [2023-08-30 05:02:56,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 44 transitions, 192 flow [2023-08-30 05:02:56,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 44 transitions, 189 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 05:02:56,151 INFO L231 Difference]: Finished difference. Result has 49 places, 44 transitions, 113 flow [2023-08-30 05:02:56,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=113, PETRI_PLACES=49, PETRI_TRANSITIONS=44} [2023-08-30 05:02:56,152 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -2 predicate places. [2023-08-30 05:02:56,152 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 44 transitions, 113 flow [2023-08-30 05:02:56,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 335.6666666666667) internal successors, (1007), 3 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:02:56,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:02:56,153 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 05:02:56,167 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-08-30 05:02:56,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:02:56,363 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:02:56,363 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:02:56,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1470721, now seen corresponding path program 1 times [2023-08-30 05:02:56,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:02:56,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1091527964] [2023-08-30 05:02:56,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:02:56,364 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:02:56,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:02:56,368 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:02:56,371 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 (5)] Waiting until timeout for monitored process [2023-08-30 05:02:56,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:02:56,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 05:02:56,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:02:56,460 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:02:56,460 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:02:56,488 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:02:56,488 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:02:56,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1091527964] [2023-08-30 05:02:56,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1091527964] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:02:56,489 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 05:02:56,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-08-30 05:02:56,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404125737] [2023-08-30 05:02:56,489 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 05:02:56,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 05:02:56,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:02:56,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 05:02:56,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-30 05:02:56,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 333 out of 781 [2023-08-30 05:02:56,600 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 44 transitions, 113 flow. Second operand has 6 states, 6 states have (on average 334.0) internal successors, (2004), 6 states have internal predecessors, (2004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:02:56,600 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:02:56,600 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 333 of 781 [2023-08-30 05:02:56,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:02:57,334 INFO L130 PetriNetUnfolder]: 1818/2569 cut-off events. [2023-08-30 05:02:57,334 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2023-08-30 05:02:57,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5188 conditions, 2569 events. 1818/2569 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 10292 event pairs, 1428 based on Foata normal form. 2/1032 useless extension candidates. Maximal degree in co-relation 5178. Up to 2564 conditions per place. [2023-08-30 05:02:57,346 INFO L137 encePairwiseOnDemand]: 775/781 looper letters, 43 selfloop transitions, 5 changer transitions 0/48 dead transitions. [2023-08-30 05:02:57,346 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 48 transitions, 225 flow [2023-08-30 05:02:57,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 05:02:57,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 05:02:57,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1719 transitions. [2023-08-30 05:02:57,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44020486555697824 [2023-08-30 05:02:57,351 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1719 transitions. [2023-08-30 05:02:57,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1719 transitions. [2023-08-30 05:02:57,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:02:57,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1719 transitions. [2023-08-30 05:02:57,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 343.8) internal successors, (1719), 5 states have internal predecessors, (1719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:02:57,361 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 781.0) internal successors, (4686), 6 states have internal predecessors, (4686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:02:57,363 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 781.0) internal successors, (4686), 6 states have internal predecessors, (4686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:02:57,363 INFO L175 Difference]: Start difference. First operand has 49 places, 44 transitions, 113 flow. Second operand 5 states and 1719 transitions. [2023-08-30 05:02:57,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 48 transitions, 225 flow [2023-08-30 05:02:57,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 48 transitions, 221 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 05:02:57,365 INFO L231 Difference]: Finished difference. Result has 54 places, 47 transitions, 155 flow [2023-08-30 05:02:57,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=155, PETRI_PLACES=54, PETRI_TRANSITIONS=47} [2023-08-30 05:02:57,366 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 3 predicate places. [2023-08-30 05:02:57,366 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 47 transitions, 155 flow [2023-08-30 05:02:57,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 334.0) internal successors, (2004), 6 states have internal predecessors, (2004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:02:57,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:02:57,367 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 05:02:57,379 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-08-30 05:02:57,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:02:57,577 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:02:57,577 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:02:57,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1470611, now seen corresponding path program 1 times [2023-08-30 05:02:57,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:02:57,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [772396978] [2023-08-30 05:02:57,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:02:57,578 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:02:57,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:02:57,579 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:02:57,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-08-30 05:02:57,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:02:57,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 05:02:57,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:02:57,731 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2023-08-30 05:02:57,732 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 42 [2023-08-30 05:02:57,764 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:02:57,764 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:02:57,846 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:02:57,847 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:02:57,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [772396978] [2023-08-30 05:02:57,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [772396978] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:02:57,847 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 05:02:57,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-08-30 05:02:57,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462480062] [2023-08-30 05:02:57,848 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 05:02:57,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 05:02:57,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:02:57,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 05:02:57,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-30 05:02:58,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 329 out of 781 [2023-08-30 05:02:58,681 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 47 transitions, 155 flow. Second operand has 6 states, 6 states have (on average 330.0) internal successors, (1980), 6 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:02:58,681 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:02:58,681 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 329 of 781 [2023-08-30 05:02:58,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:02:59,342 INFO L130 PetriNetUnfolder]: 1817/2567 cut-off events. [2023-08-30 05:02:59,343 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-08-30 05:02:59,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5198 conditions, 2567 events. 1817/2567 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 10276 event pairs, 1428 based on Foata normal form. 2/1033 useless extension candidates. Maximal degree in co-relation 5185. Up to 2565 conditions per place. [2023-08-30 05:02:59,372 INFO L137 encePairwiseOnDemand]: 778/781 looper letters, 42 selfloop transitions, 4 changer transitions 0/46 dead transitions. [2023-08-30 05:02:59,373 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 46 transitions, 241 flow [2023-08-30 05:02:59,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 05:02:59,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 05:02:59,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1693 transitions. [2023-08-30 05:02:59,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43354673495518564 [2023-08-30 05:02:59,379 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1693 transitions. [2023-08-30 05:02:59,379 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1693 transitions. [2023-08-30 05:02:59,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:02:59,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1693 transitions. [2023-08-30 05:02:59,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 338.6) internal successors, (1693), 5 states have internal predecessors, (1693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:02:59,390 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 781.0) internal successors, (4686), 6 states have internal predecessors, (4686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:02:59,392 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 781.0) internal successors, (4686), 6 states have internal predecessors, (4686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:02:59,393 INFO L175 Difference]: Start difference. First operand has 54 places, 47 transitions, 155 flow. Second operand 5 states and 1693 transitions. [2023-08-30 05:02:59,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 46 transitions, 241 flow [2023-08-30 05:02:59,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 46 transitions, 224 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-08-30 05:02:59,396 INFO L231 Difference]: Finished difference. Result has 55 places, 46 transitions, 140 flow [2023-08-30 05:02:59,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=140, PETRI_PLACES=55, PETRI_TRANSITIONS=46} [2023-08-30 05:02:59,398 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 4 predicate places. [2023-08-30 05:02:59,398 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 46 transitions, 140 flow [2023-08-30 05:02:59,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 330.0) internal successors, (1980), 6 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:02:59,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:02:59,400 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1] [2023-08-30 05:02:59,412 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-08-30 05:02:59,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:02:59,610 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:02:59,611 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:02:59,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1413418049, now seen corresponding path program 2 times [2023-08-30 05:02:59,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:02:59,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1432518743] [2023-08-30 05:02:59,612 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 05:02:59,612 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:02:59,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:02:59,613 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:02:59,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-08-30 05:02:59,688 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 05:02:59,688 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:02:59,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 05:02:59,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:02:59,745 INFO L321 Elim1Store]: treesize reduction 111, result has 19.0 percent of original size [2023-08-30 05:02:59,745 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 6 case distinctions, treesize of input 38 treesize of output 51 [2023-08-30 05:02:59,829 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:02:59,829 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 05:02:59,830 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:02:59,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1432518743] [2023-08-30 05:02:59,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1432518743] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:02:59,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:02:59,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 05:02:59,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11569168] [2023-08-30 05:02:59,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:02:59,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 05:02:59,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:02:59,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 05:02:59,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 05:02:59,994 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 332 out of 781 [2023-08-30 05:02:59,995 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 46 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 333.0) internal successors, (999), 3 states have internal predecessors, (999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:02:59,996 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:02:59,996 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 332 of 781 [2023-08-30 05:02:59,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:03:00,415 INFO L130 PetriNetUnfolder]: 1442/2066 cut-off events. [2023-08-30 05:03:00,415 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-30 05:03:00,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4188 conditions, 2066 events. 1442/2066 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 8082 event pairs, 1128 based on Foata normal form. 0/881 useless extension candidates. Maximal degree in co-relation 4176. Up to 2066 conditions per place. [2023-08-30 05:03:00,426 INFO L137 encePairwiseOnDemand]: 778/781 looper letters, 43 selfloop transitions, 1 changer transitions 0/44 dead transitions. [2023-08-30 05:03:00,426 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 44 transitions, 218 flow [2023-08-30 05:03:00,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:03:00,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:03:00,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1039 transitions. [2023-08-30 05:03:00,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4434485702091336 [2023-08-30 05:03:00,430 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1039 transitions. [2023-08-30 05:03:00,430 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1039 transitions. [2023-08-30 05:03:00,431 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:03:00,431 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1039 transitions. [2023-08-30 05:03:00,433 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 346.3333333333333) internal successors, (1039), 3 states have internal predecessors, (1039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:00,436 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 781.0) internal successors, (3124), 4 states have internal predecessors, (3124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:00,437 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 781.0) internal successors, (3124), 4 states have internal predecessors, (3124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:00,438 INFO L175 Difference]: Start difference. First operand has 55 places, 46 transitions, 140 flow. Second operand 3 states and 1039 transitions. [2023-08-30 05:03:00,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 44 transitions, 218 flow [2023-08-30 05:03:00,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 44 transitions, 207 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-08-30 05:03:00,439 INFO L231 Difference]: Finished difference. Result has 51 places, 44 transitions, 121 flow [2023-08-30 05:03:00,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=121, PETRI_PLACES=51, PETRI_TRANSITIONS=44} [2023-08-30 05:03:00,440 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 0 predicate places. [2023-08-30 05:03:00,441 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 121 flow [2023-08-30 05:03:00,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 333.0) internal successors, (999), 3 states have internal predecessors, (999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:00,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:03:00,441 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1] [2023-08-30 05:03:00,453 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-08-30 05:03:00,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:03:00,651 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:03:00,651 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:03:00,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1413418051, now seen corresponding path program 1 times [2023-08-30 05:03:00,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:03:00,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1787657310] [2023-08-30 05:03:00,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:03:00,652 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:03:00,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:03:00,653 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:03:00,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-08-30 05:03:00,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:03:00,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-30 05:03:00,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:03:00,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 05:03:00,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 05:03:00,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 05:03:00,856 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2023-08-30 05:03:00,857 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 33 [2023-08-30 05:03:00,874 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2023-08-30 05:03:00,875 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2023-08-30 05:03:00,989 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:03:00,989 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 05:03:00,990 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:03:00,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1787657310] [2023-08-30 05:03:00,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1787657310] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:03:00,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:03:00,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 05:03:00,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549180805] [2023-08-30 05:03:00,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:03:00,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 05:03:00,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:03:00,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 05:03:00,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 05:03:01,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 331 out of 781 [2023-08-30 05:03:01,158 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 121 flow. Second operand has 3 states, 3 states have (on average 332.0) internal successors, (996), 3 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:01,158 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:03:01,158 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 331 of 781 [2023-08-30 05:03:01,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:03:01,455 INFO L130 PetriNetUnfolder]: 1067/1565 cut-off events. [2023-08-30 05:03:01,456 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-08-30 05:03:01,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3178 conditions, 1565 events. 1067/1565 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 5921 event pairs, 828 based on Foata normal form. 0/731 useless extension candidates. Maximal degree in co-relation 3166. Up to 1565 conditions per place. [2023-08-30 05:03:01,462 INFO L137 encePairwiseOnDemand]: 778/781 looper letters, 41 selfloop transitions, 1 changer transitions 0/42 dead transitions. [2023-08-30 05:03:01,462 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 42 transitions, 195 flow [2023-08-30 05:03:01,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:03:01,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:03:01,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1034 transitions. [2023-08-30 05:03:01,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4413145539906103 [2023-08-30 05:03:01,465 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1034 transitions. [2023-08-30 05:03:01,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1034 transitions. [2023-08-30 05:03:01,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:03:01,466 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1034 transitions. [2023-08-30 05:03:01,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 344.6666666666667) internal successors, (1034), 3 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:01,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 781.0) internal successors, (3124), 4 states have internal predecessors, (3124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:01,472 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 781.0) internal successors, (3124), 4 states have internal predecessors, (3124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:01,472 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 121 flow. Second operand 3 states and 1034 transitions. [2023-08-30 05:03:01,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 42 transitions, 195 flow [2023-08-30 05:03:01,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 42 transitions, 194 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:03:01,474 INFO L231 Difference]: Finished difference. Result has 50 places, 42 transitions, 112 flow [2023-08-30 05:03:01,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=50, PETRI_TRANSITIONS=42} [2023-08-30 05:03:01,474 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -1 predicate places. [2023-08-30 05:03:01,474 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 42 transitions, 112 flow [2023-08-30 05:03:01,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 332.0) internal successors, (996), 3 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:01,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:03:01,475 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1] [2023-08-30 05:03:01,485 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-08-30 05:03:01,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:03:01,685 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:03:01,685 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:03:01,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1413417939, now seen corresponding path program 2 times [2023-08-30 05:03:01,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:03:01,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [535138288] [2023-08-30 05:03:01,686 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 05:03:01,686 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:03:01,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:03:01,687 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:03:01,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-08-30 05:03:01,767 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 05:03:01,767 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:03:01,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 05:03:01,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:03:01,810 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:03:01,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:03:01,932 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:03:01,933 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:03:01,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [535138288] [2023-08-30 05:03:01,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [535138288] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:03:01,933 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 05:03:01,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2023-08-30 05:03:01,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903128888] [2023-08-30 05:03:01,933 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 05:03:01,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 05:03:01,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:03:01,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 05:03:01,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-08-30 05:03:02,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 333 out of 781 [2023-08-30 05:03:02,240 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 42 transitions, 112 flow. Second operand has 10 states, 10 states have (on average 334.0) internal successors, (3340), 10 states have internal predecessors, (3340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:02,240 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:03:02,241 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 333 of 781 [2023-08-30 05:03:02,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:03:02,701 INFO L130 PetriNetUnfolder]: 1066/1563 cut-off events. [2023-08-30 05:03:02,702 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-08-30 05:03:02,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3174 conditions, 1563 events. 1066/1563 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 5900 event pairs, 828 based on Foata normal form. 2/731 useless extension candidates. Maximal degree in co-relation 3161. Up to 1560 conditions per place. [2023-08-30 05:03:02,708 INFO L137 encePairwiseOnDemand]: 778/781 looper letters, 36 selfloop transitions, 4 changer transitions 0/40 dead transitions. [2023-08-30 05:03:02,708 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 40 transitions, 184 flow [2023-08-30 05:03:02,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 05:03:02,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 05:03:02,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2040 transitions. [2023-08-30 05:03:02,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4353393085787452 [2023-08-30 05:03:02,715 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2040 transitions. [2023-08-30 05:03:02,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2040 transitions. [2023-08-30 05:03:02,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:03:02,717 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2040 transitions. [2023-08-30 05:03:02,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:02,728 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 781.0) internal successors, (5467), 7 states have internal predecessors, (5467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:02,729 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 781.0) internal successors, (5467), 7 states have internal predecessors, (5467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:02,730 INFO L175 Difference]: Start difference. First operand has 50 places, 42 transitions, 112 flow. Second operand 6 states and 2040 transitions. [2023-08-30 05:03:02,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 40 transitions, 184 flow [2023-08-30 05:03:02,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 40 transitions, 181 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 05:03:02,731 INFO L231 Difference]: Finished difference. Result has 52 places, 40 transitions, 109 flow [2023-08-30 05:03:02,732 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=109, PETRI_PLACES=52, PETRI_TRANSITIONS=40} [2023-08-30 05:03:02,732 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 1 predicate places. [2023-08-30 05:03:02,732 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 40 transitions, 109 flow [2023-08-30 05:03:02,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 334.0) internal successors, (3340), 10 states have internal predecessors, (3340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:02,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:03:02,734 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1] [2023-08-30 05:03:02,757 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-08-30 05:03:02,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:03:02,958 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:03:02,958 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:03:02,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1085113836, now seen corresponding path program 1 times [2023-08-30 05:03:02,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:03:02,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [425926805] [2023-08-30 05:03:02,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:03:02,959 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:03:02,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:03:02,960 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:03:02,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-08-30 05:03:03,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:03:03,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-30 05:03:03,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:03:03,147 INFO L321 Elim1Store]: treesize reduction 105, result has 17.3 percent of original size [2023-08-30 05:03:03,148 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 4 case distinctions, treesize of input 29 treesize of output 40 [2023-08-30 05:03:03,347 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:03:03,347 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 05:03:03,347 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:03:03,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [425926805] [2023-08-30 05:03:03,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [425926805] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:03:03,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:03:03,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 05:03:03,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614616561] [2023-08-30 05:03:03,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:03:03,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 05:03:03,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:03:03,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 05:03:03,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 05:03:03,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 332 out of 781 [2023-08-30 05:03:03,512 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 40 transitions, 109 flow. Second operand has 3 states, 3 states have (on average 333.6666666666667) internal successors, (1001), 3 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:03,512 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:03:03,512 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 332 of 781 [2023-08-30 05:03:03,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:03:03,854 INFO L130 PetriNetUnfolder]: 1011/1478 cut-off events. [2023-08-30 05:03:03,854 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-08-30 05:03:03,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3006 conditions, 1478 events. 1011/1478 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 5532 event pairs, 784 based on Foata normal form. 0/707 useless extension candidates. Maximal degree in co-relation 2993. Up to 1478 conditions per place. [2023-08-30 05:03:03,860 INFO L137 encePairwiseOnDemand]: 778/781 looper letters, 37 selfloop transitions, 1 changer transitions 0/38 dead transitions. [2023-08-30 05:03:03,860 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 38 transitions, 181 flow [2023-08-30 05:03:03,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:03:03,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:03:03,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1034 transitions. [2023-08-30 05:03:03,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4413145539906103 [2023-08-30 05:03:03,864 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1034 transitions. [2023-08-30 05:03:03,865 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1034 transitions. [2023-08-30 05:03:03,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:03:03,866 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1034 transitions. [2023-08-30 05:03:03,868 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 344.6666666666667) internal successors, (1034), 3 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:03,871 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 781.0) internal successors, (3124), 4 states have internal predecessors, (3124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:03,872 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 781.0) internal successors, (3124), 4 states have internal predecessors, (3124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:03,872 INFO L175 Difference]: Start difference. First operand has 52 places, 40 transitions, 109 flow. Second operand 3 states and 1034 transitions. [2023-08-30 05:03:03,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 38 transitions, 181 flow [2023-08-30 05:03:03,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 38 transitions, 174 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 05:03:03,874 INFO L231 Difference]: Finished difference. Result has 48 places, 38 transitions, 100 flow [2023-08-30 05:03:03,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=48, PETRI_TRANSITIONS=38} [2023-08-30 05:03:03,874 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -3 predicate places. [2023-08-30 05:03:03,875 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 38 transitions, 100 flow [2023-08-30 05:03:03,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 333.6666666666667) internal successors, (1001), 3 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:03,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:03:03,875 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1] [2023-08-30 05:03:03,891 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-08-30 05:03:04,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:03:04,085 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:03:04,086 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:03:04,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1085113837, now seen corresponding path program 1 times [2023-08-30 05:03:04,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:03:04,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1691717176] [2023-08-30 05:03:04,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:03:04,086 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:03:04,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:03:04,087 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:03:04,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-08-30 05:03:04,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:03:04,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-30 05:03:04,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:03:04,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 05:03:04,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 05:03:04,283 INFO L321 Elim1Store]: treesize reduction 43, result has 41.9 percent of original size [2023-08-30 05:03:04,284 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 36 [2023-08-30 05:03:04,294 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2023-08-30 05:03:04,409 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:03:04,409 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 05:03:04,409 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:03:04,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1691717176] [2023-08-30 05:03:04,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1691717176] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:03:04,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:03:04,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 05:03:04,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734300780] [2023-08-30 05:03:04,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:03:04,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 05:03:04,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:03:04,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 05:03:04,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 05:03:04,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 331 out of 781 [2023-08-30 05:03:04,589 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 38 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 332.6666666666667) internal successors, (998), 3 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:04,589 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:03:04,589 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 331 of 781 [2023-08-30 05:03:04,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:03:04,878 INFO L130 PetriNetUnfolder]: 956/1393 cut-off events. [2023-08-30 05:03:04,879 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-08-30 05:03:04,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2834 conditions, 1393 events. 956/1393 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 5146 event pairs, 740 based on Foata normal form. 0/685 useless extension candidates. Maximal degree in co-relation 2821. Up to 1393 conditions per place. [2023-08-30 05:03:04,885 INFO L137 encePairwiseOnDemand]: 778/781 looper letters, 35 selfloop transitions, 1 changer transitions 0/36 dead transitions. [2023-08-30 05:03:04,886 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 36 transitions, 168 flow [2023-08-30 05:03:04,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:03:04,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:03:04,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1029 transitions. [2023-08-30 05:03:04,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43918053777208704 [2023-08-30 05:03:04,889 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1029 transitions. [2023-08-30 05:03:04,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1029 transitions. [2023-08-30 05:03:04,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:03:04,890 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1029 transitions. [2023-08-30 05:03:04,892 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 343.0) internal successors, (1029), 3 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:04,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 781.0) internal successors, (3124), 4 states have internal predecessors, (3124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:04,896 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 781.0) internal successors, (3124), 4 states have internal predecessors, (3124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:04,896 INFO L175 Difference]: Start difference. First operand has 48 places, 38 transitions, 100 flow. Second operand 3 states and 1029 transitions. [2023-08-30 05:03:04,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 36 transitions, 168 flow [2023-08-30 05:03:04,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 36 transitions, 167 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:03:04,898 INFO L231 Difference]: Finished difference. Result has 47 places, 36 transitions, 97 flow [2023-08-30 05:03:04,899 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=97, PETRI_PLACES=47, PETRI_TRANSITIONS=36} [2023-08-30 05:03:04,900 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -4 predicate places. [2023-08-30 05:03:04,900 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 36 transitions, 97 flow [2023-08-30 05:03:04,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 332.6666666666667) internal successors, (998), 3 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:04,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:03:04,901 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1] [2023-08-30 05:03:04,916 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-08-30 05:03:05,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:03:05,112 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:03:05,112 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:03:05,112 INFO L85 PathProgramCache]: Analyzing trace with hash -721211347, now seen corresponding path program 1 times [2023-08-30 05:03:05,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:03:05,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1292791528] [2023-08-30 05:03:05,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:03:05,113 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:03:05,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:03:05,114 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:03:05,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-08-30 05:03:05,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:03:05,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-30 05:03:05,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:03:05,305 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2023-08-30 05:03:05,306 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 42 [2023-08-30 05:03:05,367 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:03:05,367 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 05:03:05,367 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:03:05,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1292791528] [2023-08-30 05:03:05,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1292791528] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:03:05,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:03:05,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 05:03:05,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223150766] [2023-08-30 05:03:05,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:03:05,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 05:03:05,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:03:05,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 05:03:05,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 05:03:05,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 326 out of 781 [2023-08-30 05:03:05,614 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 36 transitions, 97 flow. Second operand has 5 states, 5 states have (on average 327.2) internal successors, (1636), 5 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:05,614 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:03:05,614 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 326 of 781 [2023-08-30 05:03:05,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:03:06,124 INFO L130 PetriNetUnfolder]: 1577/2302 cut-off events. [2023-08-30 05:03:06,124 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-08-30 05:03:06,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4671 conditions, 2302 events. 1577/2302 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 10264 event pairs, 740 based on Foata normal form. 0/1122 useless extension candidates. Maximal degree in co-relation 4657. Up to 1389 conditions per place. [2023-08-30 05:03:06,139 INFO L137 encePairwiseOnDemand]: 776/781 looper letters, 60 selfloop transitions, 4 changer transitions 0/64 dead transitions. [2023-08-30 05:03:06,140 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 64 transitions, 286 flow [2023-08-30 05:03:06,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 05:03:06,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 05:03:06,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1693 transitions. [2023-08-30 05:03:06,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43354673495518564 [2023-08-30 05:03:06,145 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1693 transitions. [2023-08-30 05:03:06,145 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1693 transitions. [2023-08-30 05:03:06,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:03:06,146 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1693 transitions. [2023-08-30 05:03:06,149 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 338.6) internal successors, (1693), 5 states have internal predecessors, (1693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:06,155 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 781.0) internal successors, (4686), 6 states have internal predecessors, (4686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:06,156 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 781.0) internal successors, (4686), 6 states have internal predecessors, (4686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:06,156 INFO L175 Difference]: Start difference. First operand has 47 places, 36 transitions, 97 flow. Second operand 5 states and 1693 transitions. [2023-08-30 05:03:06,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 64 transitions, 286 flow [2023-08-30 05:03:06,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 64 transitions, 285 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:03:06,158 INFO L231 Difference]: Finished difference. Result has 51 places, 37 transitions, 112 flow [2023-08-30 05:03:06,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=112, PETRI_PLACES=51, PETRI_TRANSITIONS=37} [2023-08-30 05:03:06,159 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 0 predicate places. [2023-08-30 05:03:06,159 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 37 transitions, 112 flow [2023-08-30 05:03:06,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 327.2) internal successors, (1636), 5 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:06,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:03:06,160 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1] [2023-08-30 05:03:06,172 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-08-30 05:03:06,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:03:06,369 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:03:06,370 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:03:06,370 INFO L85 PathProgramCache]: Analyzing trace with hash -721211349, now seen corresponding path program 1 times [2023-08-30 05:03:06,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:03:06,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1945361477] [2023-08-30 05:03:06,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:03:06,370 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:03:06,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:03:06,371 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:03:06,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-08-30 05:03:06,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:03:06,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 05:03:06,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:03:06,528 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2023-08-30 05:03:06,528 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 50 [2023-08-30 05:03:06,552 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:03:06,552 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 05:03:06,552 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:03:06,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1945361477] [2023-08-30 05:03:06,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1945361477] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:03:06,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:03:06,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 05:03:06,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875038655] [2023-08-30 05:03:06,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:03:06,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 05:03:06,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:03:06,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 05:03:06,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 05:03:06,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 781 [2023-08-30 05:03:06,735 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 37 transitions, 112 flow. Second operand has 4 states, 4 states have (on average 325.5) internal successors, (1302), 4 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:06,735 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:03:06,735 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 781 [2023-08-30 05:03:06,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:03:07,019 INFO L130 PetriNetUnfolder]: 845/1250 cut-off events. [2023-08-30 05:03:07,019 INFO L131 PetriNetUnfolder]: For 265/265 co-relation queries the response was YES. [2023-08-30 05:03:07,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2802 conditions, 1250 events. 845/1250 cut-off events. For 265/265 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4511 event pairs, 635 based on Foata normal form. 0/816 useless extension candidates. Maximal degree in co-relation 2786. Up to 1246 conditions per place. [2023-08-30 05:03:07,025 INFO L137 encePairwiseOnDemand]: 776/781 looper letters, 32 selfloop transitions, 2 changer transitions 0/34 dead transitions. [2023-08-30 05:03:07,026 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 34 transitions, 174 flow [2023-08-30 05:03:07,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 05:03:07,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 05:03:07,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1330 transitions. [2023-08-30 05:03:07,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42573623559539053 [2023-08-30 05:03:07,030 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1330 transitions. [2023-08-30 05:03:07,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1330 transitions. [2023-08-30 05:03:07,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:03:07,031 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1330 transitions. [2023-08-30 05:03:07,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 332.5) internal successors, (1330), 4 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:07,037 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 781.0) internal successors, (3905), 5 states have internal predecessors, (3905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:07,037 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 781.0) internal successors, (3905), 5 states have internal predecessors, (3905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:07,038 INFO L175 Difference]: Start difference. First operand has 51 places, 37 transitions, 112 flow. Second operand 4 states and 1330 transitions. [2023-08-30 05:03:07,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 34 transitions, 174 flow [2023-08-30 05:03:07,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 34 transitions, 168 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 05:03:07,039 INFO L231 Difference]: Finished difference. Result has 48 places, 34 transitions, 104 flow [2023-08-30 05:03:07,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=104, PETRI_PLACES=48, PETRI_TRANSITIONS=34} [2023-08-30 05:03:07,040 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -3 predicate places. [2023-08-30 05:03:07,040 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 34 transitions, 104 flow [2023-08-30 05:03:07,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 325.5) internal successors, (1302), 4 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:07,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:03:07,041 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2023-08-30 05:03:07,052 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-08-30 05:03:07,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:03:07,250 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:03:07,251 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:03:07,251 INFO L85 PathProgramCache]: Analyzing trace with hash -882624075, now seen corresponding path program 1 times [2023-08-30 05:03:07,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:03:07,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [679345471] [2023-08-30 05:03:07,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:03:07,251 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:03:07,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:03:07,252 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:03:07,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-08-30 05:03:07,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:03:07,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 05:03:07,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:03:07,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 05:03:07,437 INFO L321 Elim1Store]: treesize reduction 62, result has 31.1 percent of original size [2023-08-30 05:03:07,437 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 38 [2023-08-30 05:03:07,473 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 342 treesize of output 334 [2023-08-30 05:03:07,545 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:03:07,545 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 05:03:07,545 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:03:07,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [679345471] [2023-08-30 05:03:07,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [679345471] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:03:07,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:03:07,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 05:03:07,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817516486] [2023-08-30 05:03:07,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:03:07,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 05:03:07,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:03:07,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 05:03:07,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 05:03:07,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 333 out of 781 [2023-08-30 05:03:07,667 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 34 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 335.3333333333333) internal successors, (1006), 3 states have internal predecessors, (1006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:07,667 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:03:07,667 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 333 of 781 [2023-08-30 05:03:07,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:03:07,921 INFO L130 PetriNetUnfolder]: 789/1162 cut-off events. [2023-08-30 05:03:07,922 INFO L131 PetriNetUnfolder]: For 154/154 co-relation queries the response was YES. [2023-08-30 05:03:07,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2560 conditions, 1162 events. 789/1162 cut-off events. For 154/154 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4098 event pairs, 591 based on Foata normal form. 0/780 useless extension candidates. Maximal degree in co-relation 2544. Up to 1162 conditions per place. [2023-08-30 05:03:07,927 INFO L137 encePairwiseOnDemand]: 778/781 looper letters, 31 selfloop transitions, 1 changer transitions 0/32 dead transitions. [2023-08-30 05:03:07,927 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 32 transitions, 164 flow [2023-08-30 05:03:07,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:03:07,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:03:07,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1030 transitions. [2023-08-30 05:03:07,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43960734101579174 [2023-08-30 05:03:07,931 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1030 transitions. [2023-08-30 05:03:07,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1030 transitions. [2023-08-30 05:03:07,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:03:07,932 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1030 transitions. [2023-08-30 05:03:07,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 343.3333333333333) internal successors, (1030), 3 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:07,936 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 781.0) internal successors, (3124), 4 states have internal predecessors, (3124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:07,937 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 781.0) internal successors, (3124), 4 states have internal predecessors, (3124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:07,937 INFO L175 Difference]: Start difference. First operand has 48 places, 34 transitions, 104 flow. Second operand 3 states and 1030 transitions. [2023-08-30 05:03:07,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 32 transitions, 164 flow [2023-08-30 05:03:07,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 32 transitions, 161 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 05:03:07,938 INFO L231 Difference]: Finished difference. Result has 46 places, 32 transitions, 99 flow [2023-08-30 05:03:07,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=99, PETRI_PLACES=46, PETRI_TRANSITIONS=32} [2023-08-30 05:03:07,939 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -5 predicate places. [2023-08-30 05:03:07,939 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 32 transitions, 99 flow [2023-08-30 05:03:07,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 335.3333333333333) internal successors, (1006), 3 states have internal predecessors, (1006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:07,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:03:07,940 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2023-08-30 05:03:07,955 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-08-30 05:03:08,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:03:08,151 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:03:08,151 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:03:08,151 INFO L85 PathProgramCache]: Analyzing trace with hash -882624074, now seen corresponding path program 1 times [2023-08-30 05:03:08,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:03:08,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [499836224] [2023-08-30 05:03:08,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:03:08,152 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:03:08,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:03:08,153 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:03:08,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-08-30 05:03:08,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:03:08,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-30 05:03:08,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:03:08,319 INFO L321 Elim1Store]: treesize reduction 105, result has 17.3 percent of original size [2023-08-30 05:03:08,320 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 29 [2023-08-30 05:03:08,348 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:03:08,348 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 05:03:08,348 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:03:08,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [499836224] [2023-08-30 05:03:08,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [499836224] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:03:08,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:03:08,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 05:03:08,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858884925] [2023-08-30 05:03:08,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:03:08,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 05:03:08,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:03:08,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 05:03:08,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 05:03:08,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 329 out of 781 [2023-08-30 05:03:08,433 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 32 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 331.3333333333333) internal successors, (994), 3 states have internal predecessors, (994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:08,433 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:03:08,433 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 329 of 781 [2023-08-30 05:03:08,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:03:08,622 INFO L130 PetriNetUnfolder]: 733/1074 cut-off events. [2023-08-30 05:03:08,622 INFO L131 PetriNetUnfolder]: For 139/139 co-relation queries the response was YES. [2023-08-30 05:03:08,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2368 conditions, 1074 events. 733/1074 cut-off events. For 139/139 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3721 event pairs, 547 based on Foata normal form. 0/744 useless extension candidates. Maximal degree in co-relation 2352. Up to 1074 conditions per place. [2023-08-30 05:03:08,626 INFO L137 encePairwiseOnDemand]: 778/781 looper letters, 29 selfloop transitions, 1 changer transitions 0/30 dead transitions. [2023-08-30 05:03:08,626 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 30 transitions, 155 flow [2023-08-30 05:03:08,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:03:08,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:03:08,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1016 transitions. [2023-08-30 05:03:08,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43363209560392657 [2023-08-30 05:03:08,629 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1016 transitions. [2023-08-30 05:03:08,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1016 transitions. [2023-08-30 05:03:08,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:03:08,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1016 transitions. [2023-08-30 05:03:08,631 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 338.6666666666667) internal successors, (1016), 3 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:08,635 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 781.0) internal successors, (3124), 4 states have internal predecessors, (3124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:08,635 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 781.0) internal successors, (3124), 4 states have internal predecessors, (3124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:08,635 INFO L175 Difference]: Start difference. First operand has 46 places, 32 transitions, 99 flow. Second operand 3 states and 1016 transitions. [2023-08-30 05:03:08,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 30 transitions, 155 flow [2023-08-30 05:03:08,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 30 transitions, 154 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:03:08,637 INFO L231 Difference]: Finished difference. Result has 45 places, 30 transitions, 96 flow [2023-08-30 05:03:08,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=45, PETRI_TRANSITIONS=30} [2023-08-30 05:03:08,637 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -6 predicate places. [2023-08-30 05:03:08,638 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 30 transitions, 96 flow [2023-08-30 05:03:08,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 331.3333333333333) internal successors, (994), 3 states have internal predecessors, (994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:08,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:03:08,638 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2023-08-30 05:03:08,648 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-08-30 05:03:08,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:03:08,849 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:03:08,849 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:03:08,849 INFO L85 PathProgramCache]: Analyzing trace with hash -882713886, now seen corresponding path program 1 times [2023-08-30 05:03:08,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:03:08,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1733947614] [2023-08-30 05:03:08,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:03:08,850 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:03:08,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:03:08,851 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:03:08,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-08-30 05:03:08,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:03:08,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-30 05:03:08,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:03:09,025 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2023-08-30 05:03:09,025 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 42 [2023-08-30 05:03:09,089 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:03:09,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:03:09,295 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:03:09,295 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:03:09,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1733947614] [2023-08-30 05:03:09,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1733947614] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:03:09,295 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 05:03:09,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2023-08-30 05:03:09,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282394558] [2023-08-30 05:03:09,296 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 05:03:09,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 05:03:09,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:03:09,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 05:03:09,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-08-30 05:03:11,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 781 [2023-08-30 05:03:11,011 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 30 transitions, 96 flow. Second operand has 10 states, 10 states have (on average 326.4) internal successors, (3264), 10 states have internal predecessors, (3264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:11,011 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:03:11,011 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 781 [2023-08-30 05:03:11,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:03:11,702 INFO L130 PetriNetUnfolder]: 1269/1862 cut-off events. [2023-08-30 05:03:11,702 INFO L131 PetriNetUnfolder]: For 92/92 co-relation queries the response was YES. [2023-08-30 05:03:11,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4049 conditions, 1862 events. 1269/1862 cut-off events. For 92/92 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 7925 event pairs, 333 based on Foata normal form. 0/1316 useless extension candidates. Maximal degree in co-relation 4032. Up to 676 conditions per place. [2023-08-30 05:03:11,708 INFO L137 encePairwiseOnDemand]: 776/781 looper letters, 86 selfloop transitions, 6 changer transitions 0/92 dead transitions. [2023-08-30 05:03:11,708 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 92 transitions, 423 flow [2023-08-30 05:03:11,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 05:03:11,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 05:03:11,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2367 transitions. [2023-08-30 05:03:11,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4329614047923907 [2023-08-30 05:03:11,715 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2367 transitions. [2023-08-30 05:03:11,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2367 transitions. [2023-08-30 05:03:11,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:03:11,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2367 transitions. [2023-08-30 05:03:11,719 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 338.14285714285717) internal successors, (2367), 7 states have internal predecessors, (2367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:11,726 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:11,727 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:11,727 INFO L175 Difference]: Start difference. First operand has 45 places, 30 transitions, 96 flow. Second operand 7 states and 2367 transitions. [2023-08-30 05:03:11,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 92 transitions, 423 flow [2023-08-30 05:03:11,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 92 transitions, 422 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:03:11,729 INFO L231 Difference]: Finished difference. Result has 52 places, 32 transitions, 125 flow [2023-08-30 05:03:11,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=125, PETRI_PLACES=52, PETRI_TRANSITIONS=32} [2023-08-30 05:03:11,730 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 1 predicate places. [2023-08-30 05:03:11,730 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 32 transitions, 125 flow [2023-08-30 05:03:11,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 326.4) internal successors, (3264), 10 states have internal predecessors, (3264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:11,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:03:11,731 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:03:11,741 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 [2023-08-30 05:03:11,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:03:11,942 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:03:11,942 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:03:11,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1591542639, now seen corresponding path program 1 times [2023-08-30 05:03:11,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:03:11,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1401184385] [2023-08-30 05:03:11,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:03:11,943 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:03:11,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:03:11,944 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:03:11,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-08-30 05:03:12,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:03:12,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-30 05:03:12,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:03:12,121 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2023-08-30 05:03:12,122 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 42 [2023-08-30 05:03:12,190 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:03:12,190 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 05:03:12,191 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:03:12,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1401184385] [2023-08-30 05:03:12,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1401184385] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:03:12,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:03:12,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 05:03:12,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664452906] [2023-08-30 05:03:12,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:03:12,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 05:03:12,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:03:12,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 05:03:12,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 05:03:12,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 326 out of 781 [2023-08-30 05:03:12,426 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 32 transitions, 125 flow. Second operand has 5 states, 5 states have (on average 327.6) internal successors, (1638), 5 states have internal predecessors, (1638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:12,426 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:03:12,426 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 326 of 781 [2023-08-30 05:03:12,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:03:12,888 INFO L130 PetriNetUnfolder]: 1909/2806 cut-off events. [2023-08-30 05:03:12,888 INFO L131 PetriNetUnfolder]: For 1638/1638 co-relation queries the response was YES. [2023-08-30 05:03:12,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6639 conditions, 2806 events. 1909/2806 cut-off events. For 1638/1638 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 12570 event pairs, 975 based on Foata normal form. 0/2042 useless extension candidates. Maximal degree in co-relation 6619. Up to 1858 conditions per place. [2023-08-30 05:03:12,902 INFO L137 encePairwiseOnDemand]: 776/781 looper letters, 50 selfloop transitions, 4 changer transitions 0/54 dead transitions. [2023-08-30 05:03:12,902 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 54 transitions, 311 flow [2023-08-30 05:03:12,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 05:03:12,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 05:03:12,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1677 transitions. [2023-08-30 05:03:12,906 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.429449423815621 [2023-08-30 05:03:12,906 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1677 transitions. [2023-08-30 05:03:12,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1677 transitions. [2023-08-30 05:03:12,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:03:12,907 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1677 transitions. [2023-08-30 05:03:12,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 335.4) internal successors, (1677), 5 states have internal predecessors, (1677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:12,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 781.0) internal successors, (4686), 6 states have internal predecessors, (4686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:12,915 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 781.0) internal successors, (4686), 6 states have internal predecessors, (4686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:12,915 INFO L175 Difference]: Start difference. First operand has 52 places, 32 transitions, 125 flow. Second operand 5 states and 1677 transitions. [2023-08-30 05:03:12,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 54 transitions, 311 flow [2023-08-30 05:03:12,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 54 transitions, 296 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-08-30 05:03:12,918 INFO L231 Difference]: Finished difference. Result has 54 places, 33 transitions, 132 flow [2023-08-30 05:03:12,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=132, PETRI_PLACES=54, PETRI_TRANSITIONS=33} [2023-08-30 05:03:12,918 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 3 predicate places. [2023-08-30 05:03:12,918 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 33 transitions, 132 flow [2023-08-30 05:03:12,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 327.6) internal successors, (1638), 5 states have internal predecessors, (1638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:12,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:03:12,919 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:03:12,933 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-08-30 05:03:13,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:03:13,129 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:03:13,129 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:03:13,129 INFO L85 PathProgramCache]: Analyzing trace with hash -2093179504, now seen corresponding path program 1 times [2023-08-30 05:03:13,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:03:13,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [988865557] [2023-08-30 05:03:13,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:03:13,130 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:03:13,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:03:13,131 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:03:13,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-08-30 05:03:13,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:03:13,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-30 05:03:13,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:03:13,305 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2023-08-30 05:03:13,306 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 42 [2023-08-30 05:03:13,384 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:03:13,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:03:13,570 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:03:13,570 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:03:13,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [988865557] [2023-08-30 05:03:13,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [988865557] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:03:13,570 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 05:03:13,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2023-08-30 05:03:13,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717618614] [2023-08-30 05:03:13,571 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 05:03:13,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 05:03:13,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:03:13,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 05:03:13,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-08-30 05:03:15,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 781 [2023-08-30 05:03:15,015 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 33 transitions, 132 flow. Second operand has 10 states, 10 states have (on average 326.8) internal successors, (3268), 10 states have internal predecessors, (3268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:15,015 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:03:15,015 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 781 [2023-08-30 05:03:15,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:03:16,024 INFO L130 PetriNetUnfolder]: 3189/4694 cut-off events. [2023-08-30 05:03:16,025 INFO L131 PetriNetUnfolder]: For 2515/2515 co-relation queries the response was YES. [2023-08-30 05:03:16,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11675 conditions, 4694 events. 3189/4694 cut-off events. For 2515/2515 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 23433 event pairs, 975 based on Foata normal form. 0/3938 useless extension candidates. Maximal degree in co-relation 11654. Up to 1858 conditions per place. [2023-08-30 05:03:16,042 INFO L137 encePairwiseOnDemand]: 776/781 looper letters, 92 selfloop transitions, 6 changer transitions 0/98 dead transitions. [2023-08-30 05:03:16,043 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 98 transitions, 546 flow [2023-08-30 05:03:16,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 05:03:16,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 05:03:16,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2361 transitions. [2023-08-30 05:03:16,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318639107371502 [2023-08-30 05:03:16,048 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2361 transitions. [2023-08-30 05:03:16,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2361 transitions. [2023-08-30 05:03:16,049 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:03:16,050 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2361 transitions. [2023-08-30 05:03:16,053 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 337.2857142857143) internal successors, (2361), 7 states have internal predecessors, (2361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:16,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:16,058 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:16,059 INFO L175 Difference]: Start difference. First operand has 54 places, 33 transitions, 132 flow. Second operand 7 states and 2361 transitions. [2023-08-30 05:03:16,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 98 transitions, 546 flow [2023-08-30 05:03:16,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 98 transitions, 540 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 05:03:16,062 INFO L231 Difference]: Finished difference. Result has 59 places, 35 transitions, 156 flow [2023-08-30 05:03:16,062 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=156, PETRI_PLACES=59, PETRI_TRANSITIONS=35} [2023-08-30 05:03:16,063 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 8 predicate places. [2023-08-30 05:03:16,063 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 35 transitions, 156 flow [2023-08-30 05:03:16,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 326.8) internal successors, (3268), 10 states have internal predecessors, (3268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:16,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:03:16,064 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1] [2023-08-30 05:03:16,077 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-08-30 05:03:16,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:03:16,275 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:03:16,275 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:03:16,275 INFO L85 PathProgramCache]: Analyzing trace with hash 2115524674, now seen corresponding path program 2 times [2023-08-30 05:03:16,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:03:16,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [887928867] [2023-08-30 05:03:16,275 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 05:03:16,276 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:03:16,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:03:16,277 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:03:16,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-08-30 05:03:16,399 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 05:03:16,399 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:03:16,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-30 05:03:16,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:03:16,468 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2023-08-30 05:03:16,469 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 42 [2023-08-30 05:03:16,569 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:03:16,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:03:16,866 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:03:16,867 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:03:16,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [887928867] [2023-08-30 05:03:16,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [887928867] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:03:16,867 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 05:03:16,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 11 [2023-08-30 05:03:16,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611339003] [2023-08-30 05:03:16,867 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 05:03:16,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 05:03:16,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:03:16,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 05:03:16,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-08-30 05:03:19,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 781 [2023-08-30 05:03:19,251 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 35 transitions, 156 flow. Second operand has 12 states, 12 states have (on average 326.5) internal successors, (3918), 12 states have internal predecessors, (3918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:19,251 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:03:19,252 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 781 [2023-08-30 05:03:19,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:03:20,407 INFO L130 PetriNetUnfolder]: 2845/4248 cut-off events. [2023-08-30 05:03:20,407 INFO L131 PetriNetUnfolder]: For 3566/3566 co-relation queries the response was YES. [2023-08-30 05:03:20,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11170 conditions, 4248 events. 2845/4248 cut-off events. For 3566/3566 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 22077 event pairs, 111 based on Foata normal form. 204/3868 useless extension candidates. Maximal degree in co-relation 11147. Up to 1000 conditions per place. [2023-08-30 05:03:20,424 INFO L137 encePairwiseOnDemand]: 776/781 looper letters, 112 selfloop transitions, 6 changer transitions 0/118 dead transitions. [2023-08-30 05:03:20,424 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 118 transitions, 685 flow [2023-08-30 05:03:20,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 05:03:20,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 05:03:20,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2703 transitions. [2023-08-30 05:03:20,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43261843790012805 [2023-08-30 05:03:20,428 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2703 transitions. [2023-08-30 05:03:20,429 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2703 transitions. [2023-08-30 05:03:20,430 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:03:20,430 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2703 transitions. [2023-08-30 05:03:20,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 337.875) internal successors, (2703), 8 states have internal predecessors, (2703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:20,439 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 781.0) internal successors, (7029), 9 states have internal predecessors, (7029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:20,439 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 781.0) internal successors, (7029), 9 states have internal predecessors, (7029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:20,439 INFO L175 Difference]: Start difference. First operand has 59 places, 35 transitions, 156 flow. Second operand 8 states and 2703 transitions. [2023-08-30 05:03:20,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 118 transitions, 685 flow [2023-08-30 05:03:20,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 118 transitions, 643 flow, removed 10 selfloop flow, removed 7 redundant places. [2023-08-30 05:03:20,452 INFO L231 Difference]: Finished difference. Result has 58 places, 33 transitions, 136 flow [2023-08-30 05:03:20,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=136, PETRI_PLACES=58, PETRI_TRANSITIONS=33} [2023-08-30 05:03:20,453 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 7 predicate places. [2023-08-30 05:03:20,453 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 33 transitions, 136 flow [2023-08-30 05:03:20,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 326.5) internal successors, (3918), 12 states have internal predecessors, (3918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:20,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:03:20,454 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:03:20,468 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-08-30 05:03:20,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:03:20,665 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:03:20,665 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:03:20,665 INFO L85 PathProgramCache]: Analyzing trace with hash -462939428, now seen corresponding path program 1 times [2023-08-30 05:03:20,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:03:20,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [138581012] [2023-08-30 05:03:20,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:03:20,666 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:03:20,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:03:20,668 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:03:20,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-08-30 05:03:20,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:03:20,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-30 05:03:20,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:03:20,851 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2023-08-30 05:03:20,852 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 42 [2023-08-30 05:03:20,908 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:03:20,908 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 05:03:20,909 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:03:20,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [138581012] [2023-08-30 05:03:20,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [138581012] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:03:20,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:03:20,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 05:03:20,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682424319] [2023-08-30 05:03:20,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:03:20,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 05:03:20,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:03:20,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 05:03:20,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 05:03:21,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 326 out of 781 [2023-08-30 05:03:21,103 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 33 transitions, 136 flow. Second operand has 5 states, 5 states have (on average 328.0) internal successors, (1640), 5 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:21,104 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:03:21,104 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 326 of 781 [2023-08-30 05:03:21,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:03:21,893 INFO L130 PetriNetUnfolder]: 4089/6108 cut-off events. [2023-08-30 05:03:21,893 INFO L131 PetriNetUnfolder]: For 4326/4326 co-relation queries the response was YES. [2023-08-30 05:03:21,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15425 conditions, 6108 events. 4089/6108 cut-off events. For 4326/4326 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 32042 event pairs, 2431 based on Foata normal form. 0/5232 useless extension candidates. Maximal degree in co-relation 15405. Up to 4244 conditions per place. [2023-08-30 05:03:21,912 INFO L137 encePairwiseOnDemand]: 776/781 looper letters, 50 selfloop transitions, 4 changer transitions 0/54 dead transitions. [2023-08-30 05:03:21,912 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 54 transitions, 327 flow [2023-08-30 05:03:21,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 05:03:21,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 05:03:21,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1673 transitions. [2023-08-30 05:03:21,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4284250960307298 [2023-08-30 05:03:21,916 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1673 transitions. [2023-08-30 05:03:21,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1673 transitions. [2023-08-30 05:03:21,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:03:21,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1673 transitions. [2023-08-30 05:03:21,918 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 334.6) internal successors, (1673), 5 states have internal predecessors, (1673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:21,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 781.0) internal successors, (4686), 6 states have internal predecessors, (4686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:21,921 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 781.0) internal successors, (4686), 6 states have internal predecessors, (4686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:21,921 INFO L175 Difference]: Start difference. First operand has 58 places, 33 transitions, 136 flow. Second operand 5 states and 1673 transitions. [2023-08-30 05:03:21,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 54 transitions, 327 flow [2023-08-30 05:03:21,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 54 transitions, 309 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-30 05:03:21,926 INFO L231 Difference]: Finished difference. Result has 57 places, 34 transitions, 141 flow [2023-08-30 05:03:21,926 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=141, PETRI_PLACES=57, PETRI_TRANSITIONS=34} [2023-08-30 05:03:21,926 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 6 predicate places. [2023-08-30 05:03:21,927 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 34 transitions, 141 flow [2023-08-30 05:03:21,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 328.0) internal successors, (1640), 5 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:21,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:03:21,927 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:03:21,937 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-08-30 05:03:22,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:03:22,137 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:03:22,137 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:03:22,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1466219012, now seen corresponding path program 1 times [2023-08-30 05:03:22,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:03:22,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1567768479] [2023-08-30 05:03:22,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:03:22,138 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:03:22,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:03:22,139 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:03:22,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-08-30 05:03:22,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:03:22,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-30 05:03:22,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:03:22,334 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2023-08-30 05:03:22,334 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 42 [2023-08-30 05:03:22,399 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:03:22,399 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:03:22,624 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:03:22,624 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:03:22,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1567768479] [2023-08-30 05:03:22,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1567768479] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:03:22,625 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 05:03:22,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2023-08-30 05:03:22,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624223905] [2023-08-30 05:03:22,625 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 05:03:22,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 05:03:22,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:03:22,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 05:03:22,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-08-30 05:03:24,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 781 [2023-08-30 05:03:24,045 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 34 transitions, 141 flow. Second operand has 10 states, 10 states have (on average 327.2) internal successors, (3272), 10 states have internal predecessors, (3272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:24,045 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:03:24,046 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 781 [2023-08-30 05:03:24,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:03:25,601 INFO L130 PetriNetUnfolder]: 6577/9828 cut-off events. [2023-08-30 05:03:25,601 INFO L131 PetriNetUnfolder]: For 6943/6943 co-relation queries the response was YES. [2023-08-30 05:03:25,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26052 conditions, 9828 events. 6577/9828 cut-off events. For 6943/6943 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 56006 event pairs, 2431 based on Foata normal form. 0/9536 useless extension candidates. Maximal degree in co-relation 26031. Up to 4244 conditions per place. [2023-08-30 05:03:25,642 INFO L137 encePairwiseOnDemand]: 776/781 looper letters, 90 selfloop transitions, 6 changer transitions 0/96 dead transitions. [2023-08-30 05:03:25,642 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 96 transitions, 563 flow [2023-08-30 05:03:25,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 05:03:25,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 05:03:25,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2351 transitions. [2023-08-30 05:03:25,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43003475397841595 [2023-08-30 05:03:25,645 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2351 transitions. [2023-08-30 05:03:25,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2351 transitions. [2023-08-30 05:03:25,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:03:25,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2351 transitions. [2023-08-30 05:03:25,649 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 335.85714285714283) internal successors, (2351), 7 states have internal predecessors, (2351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:25,652 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:25,653 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:25,653 INFO L175 Difference]: Start difference. First operand has 57 places, 34 transitions, 141 flow. Second operand 7 states and 2351 transitions. [2023-08-30 05:03:25,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 96 transitions, 563 flow [2023-08-30 05:03:25,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 96 transitions, 557 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 05:03:25,658 INFO L231 Difference]: Finished difference. Result has 62 places, 36 transitions, 165 flow [2023-08-30 05:03:25,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=165, PETRI_PLACES=62, PETRI_TRANSITIONS=36} [2023-08-30 05:03:25,658 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 11 predicate places. [2023-08-30 05:03:25,659 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 36 transitions, 165 flow [2023-08-30 05:03:25,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 327.2) internal successors, (3272), 10 states have internal predecessors, (3272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:25,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:03:25,659 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:03:25,669 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Ended with exit code 0 [2023-08-30 05:03:25,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:03:25,865 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:03:25,866 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:03:25,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1500743248, now seen corresponding path program 2 times [2023-08-30 05:03:25,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:03:25,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [638692184] [2023-08-30 05:03:25,866 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 05:03:25,866 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:03:25,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:03:25,867 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:03:25,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-08-30 05:03:26,000 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 05:03:26,000 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:03:26,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 05:03:26,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:03:26,039 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:03:26,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:03:26,080 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:03:26,081 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:03:26,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [638692184] [2023-08-30 05:03:26,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [638692184] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:03:26,081 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 05:03:26,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-08-30 05:03:26,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963188757] [2023-08-30 05:03:26,081 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 05:03:26,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 05:03:26,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:03:26,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 05:03:26,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-08-30 05:03:26,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 335 out of 781 [2023-08-30 05:03:26,189 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 36 transitions, 165 flow. Second operand has 10 states, 10 states have (on average 336.6) internal successors, (3366), 10 states have internal predecessors, (3366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:26,190 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:03:26,190 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 335 of 781 [2023-08-30 05:03:26,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:03:27,685 INFO L130 PetriNetUnfolder]: 5675/8648 cut-off events. [2023-08-30 05:03:27,685 INFO L131 PetriNetUnfolder]: For 8811/8811 co-relation queries the response was YES. [2023-08-30 05:03:27,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24153 conditions, 8648 events. 5675/8648 cut-off events. For 8811/8811 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 51371 event pairs, 337 based on Foata normal form. 556/9204 useless extension candidates. Maximal degree in co-relation 24130. Up to 1996 conditions per place. [2023-08-30 05:03:27,713 INFO L137 encePairwiseOnDemand]: 778/781 looper letters, 113 selfloop transitions, 4 changer transitions 0/117 dead transitions. [2023-08-30 05:03:27,713 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 117 transitions, 713 flow [2023-08-30 05:03:27,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 05:03:27,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 05:03:27,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2102 transitions. [2023-08-30 05:03:27,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4485702091335894 [2023-08-30 05:03:27,716 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2102 transitions. [2023-08-30 05:03:27,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2102 transitions. [2023-08-30 05:03:27,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:03:27,717 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2102 transitions. [2023-08-30 05:03:27,719 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 350.3333333333333) internal successors, (2102), 6 states have internal predecessors, (2102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:27,721 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 781.0) internal successors, (5467), 7 states have internal predecessors, (5467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:27,722 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 781.0) internal successors, (5467), 7 states have internal predecessors, (5467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:27,722 INFO L175 Difference]: Start difference. First operand has 62 places, 36 transitions, 165 flow. Second operand 6 states and 2102 transitions. [2023-08-30 05:03:27,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 117 transitions, 713 flow [2023-08-30 05:03:27,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 117 transitions, 671 flow, removed 10 selfloop flow, removed 7 redundant places. [2023-08-30 05:03:27,746 INFO L231 Difference]: Finished difference. Result has 59 places, 34 transitions, 141 flow [2023-08-30 05:03:27,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=141, PETRI_PLACES=59, PETRI_TRANSITIONS=34} [2023-08-30 05:03:27,746 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 8 predicate places. [2023-08-30 05:03:27,746 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 34 transitions, 141 flow [2023-08-30 05:03:27,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 336.6) internal successors, (3366), 10 states have internal predecessors, (3366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:27,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:03:27,747 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:03:27,756 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 (22)] Forceful destruction successful, exit code 0 [2023-08-30 05:03:27,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:03:27,949 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:03:27,949 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:03:27,949 INFO L85 PathProgramCache]: Analyzing trace with hash -287153668, now seen corresponding path program 2 times [2023-08-30 05:03:27,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:03:27,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1740090513] [2023-08-30 05:03:27,949 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 05:03:27,950 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:03:27,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:03:27,950 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:03:27,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-08-30 05:03:28,092 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 05:03:28,092 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:03:28,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-30 05:03:28,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:03:28,169 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2023-08-30 05:03:28,169 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 42 [2023-08-30 05:03:28,295 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:03:28,296 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:03:28,583 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:03:28,584 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:03:28,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1740090513] [2023-08-30 05:03:28,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1740090513] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:03:28,584 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 05:03:28,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 11 [2023-08-30 05:03:28,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800467675] [2023-08-30 05:03:28,584 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 05:03:28,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 05:03:28,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:03:28,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 05:03:28,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-08-30 05:03:30,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 781 [2023-08-30 05:03:30,724 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 34 transitions, 141 flow. Second operand has 12 states, 12 states have (on average 327.1666666666667) internal successors, (3926), 12 states have internal predecessors, (3926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:30,724 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:03:30,724 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 781 [2023-08-30 05:03:30,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:03:32,187 INFO L130 PetriNetUnfolder]: 4872/7579 cut-off events. [2023-08-30 05:03:32,188 INFO L131 PetriNetUnfolder]: For 4323/4323 co-relation queries the response was YES. [2023-08-30 05:03:32,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19628 conditions, 7579 events. 4872/7579 cut-off events. For 4323/4323 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 44413 event pairs, 576 based on Foata normal form. 532/8111 useless extension candidates. Maximal degree in co-relation 19609. Up to 1638 conditions per place. [2023-08-30 05:03:32,214 INFO L137 encePairwiseOnDemand]: 776/781 looper letters, 95 selfloop transitions, 6 changer transitions 0/101 dead transitions. [2023-08-30 05:03:32,214 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 101 transitions, 562 flow [2023-08-30 05:03:32,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 05:03:32,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 05:03:32,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2681 transitions. [2023-08-30 05:03:32,218 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4290973111395647 [2023-08-30 05:03:32,219 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2681 transitions. [2023-08-30 05:03:32,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2681 transitions. [2023-08-30 05:03:32,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:03:32,219 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2681 transitions. [2023-08-30 05:03:32,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 335.125) internal successors, (2681), 8 states have internal predecessors, (2681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:32,226 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 781.0) internal successors, (7029), 9 states have internal predecessors, (7029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:32,226 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 781.0) internal successors, (7029), 9 states have internal predecessors, (7029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:32,226 INFO L175 Difference]: Start difference. First operand has 59 places, 34 transitions, 141 flow. Second operand 8 states and 2681 transitions. [2023-08-30 05:03:32,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 101 transitions, 562 flow [2023-08-30 05:03:32,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 101 transitions, 518 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-08-30 05:03:32,251 INFO L231 Difference]: Finished difference. Result has 57 places, 32 transitions, 123 flow [2023-08-30 05:03:32,251 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=123, PETRI_PLACES=57, PETRI_TRANSITIONS=32} [2023-08-30 05:03:32,251 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 6 predicate places. [2023-08-30 05:03:32,251 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 32 transitions, 123 flow [2023-08-30 05:03:32,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 327.1666666666667) internal successors, (3926), 12 states have internal predecessors, (3926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:32,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:03:32,253 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:03:32,261 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 (23)] Ended with exit code 0 [2023-08-30 05:03:32,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:03:32,457 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:03:32,457 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:03:32,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1532449246, now seen corresponding path program 1 times [2023-08-30 05:03:32,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:03:32,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1823548996] [2023-08-30 05:03:32,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:03:32,458 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:03:32,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:03:32,459 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:03:32,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-08-30 05:03:32,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:03:32,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-30 05:03:32,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:03:32,910 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:03:32,911 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 05:03:32,911 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:03:32,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1823548996] [2023-08-30 05:03:32,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1823548996] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:03:32,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:03:32,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 05:03:32,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611710810] [2023-08-30 05:03:32,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:03:32,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 05:03:32,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:03:32,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 05:03:32,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-30 05:03:33,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 781 [2023-08-30 05:03:33,327 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 32 transitions, 123 flow. Second operand has 8 states, 8 states have (on average 305.625) internal successors, (2445), 8 states have internal predecessors, (2445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:33,327 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:03:33,327 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 781 [2023-08-30 05:03:33,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:03:34,789 INFO L130 PetriNetUnfolder]: 5014/7836 cut-off events. [2023-08-30 05:03:34,790 INFO L131 PetriNetUnfolder]: For 3175/3175 co-relation queries the response was YES. [2023-08-30 05:03:34,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19494 conditions, 7836 events. 5014/7836 cut-off events. For 3175/3175 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 46152 event pairs, 3710 based on Foata normal form. 7/7843 useless extension candidates. Maximal degree in co-relation 19477. Up to 5788 conditions per place. [2023-08-30 05:03:34,816 INFO L137 encePairwiseOnDemand]: 772/781 looper letters, 86 selfloop transitions, 6 changer transitions 10/102 dead transitions. [2023-08-30 05:03:34,816 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 102 transitions, 555 flow [2023-08-30 05:03:34,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 05:03:34,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 05:03:34,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2206 transitions. [2023-08-30 05:03:34,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4035119809767697 [2023-08-30 05:03:34,819 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2206 transitions. [2023-08-30 05:03:34,819 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2206 transitions. [2023-08-30 05:03:34,819 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:03:34,819 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2206 transitions. [2023-08-30 05:03:34,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 315.14285714285717) internal successors, (2206), 7 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:34,824 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:34,825 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:34,825 INFO L175 Difference]: Start difference. First operand has 57 places, 32 transitions, 123 flow. Second operand 7 states and 2206 transitions. [2023-08-30 05:03:34,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 102 transitions, 555 flow [2023-08-30 05:03:34,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 102 transitions, 516 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-30 05:03:34,829 INFO L231 Difference]: Finished difference. Result has 62 places, 36 transitions, 159 flow [2023-08-30 05:03:34,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=159, PETRI_PLACES=62, PETRI_TRANSITIONS=36} [2023-08-30 05:03:34,830 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 11 predicate places. [2023-08-30 05:03:34,830 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 36 transitions, 159 flow [2023-08-30 05:03:34,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 305.625) internal successors, (2445), 8 states have internal predecessors, (2445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:34,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:03:34,831 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:03:34,845 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2023-08-30 05:03:35,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:03:35,042 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:03:35,042 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:03:35,042 INFO L85 PathProgramCache]: Analyzing trace with hash 385831842, now seen corresponding path program 2 times [2023-08-30 05:03:35,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:03:35,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [558725343] [2023-08-30 05:03:35,043 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 05:03:35,043 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:03:35,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:03:35,044 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:03:35,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-08-30 05:03:35,174 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 05:03:35,175 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:03:35,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-30 05:03:35,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:03:35,355 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:03:35,356 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 05:03:35,356 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:03:35,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [558725343] [2023-08-30 05:03:35,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [558725343] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:03:35,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:03:35,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 05:03:35,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543708808] [2023-08-30 05:03:35,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:03:35,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 05:03:35,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:03:35,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 05:03:35,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 05:03:35,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 781 [2023-08-30 05:03:35,635 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 36 transitions, 159 flow. Second operand has 6 states, 6 states have (on average 310.5) internal successors, (1863), 6 states have internal predecessors, (1863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:35,635 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:03:35,635 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 781 [2023-08-30 05:03:35,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:03:36,961 INFO L130 PetriNetUnfolder]: 5086/7967 cut-off events. [2023-08-30 05:03:36,961 INFO L131 PetriNetUnfolder]: For 5734/5734 co-relation queries the response was YES. [2023-08-30 05:03:36,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22813 conditions, 7967 events. 5086/7967 cut-off events. For 5734/5734 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 47364 event pairs, 3692 based on Foata normal form. 4/7971 useless extension candidates. Maximal degree in co-relation 22792. Up to 5868 conditions per place. [2023-08-30 05:03:36,990 INFO L137 encePairwiseOnDemand]: 774/781 looper letters, 77 selfloop transitions, 8 changer transitions 13/98 dead transitions. [2023-08-30 05:03:36,990 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 98 transitions, 596 flow [2023-08-30 05:03:36,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 05:03:36,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 05:03:36,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1914 transitions. [2023-08-30 05:03:36,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4084507042253521 [2023-08-30 05:03:36,993 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1914 transitions. [2023-08-30 05:03:36,993 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1914 transitions. [2023-08-30 05:03:36,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:03:36,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1914 transitions. [2023-08-30 05:03:36,995 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 319.0) internal successors, (1914), 6 states have internal predecessors, (1914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:36,998 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 781.0) internal successors, (5467), 7 states have internal predecessors, (5467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:36,998 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 781.0) internal successors, (5467), 7 states have internal predecessors, (5467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:36,998 INFO L175 Difference]: Start difference. First operand has 62 places, 36 transitions, 159 flow. Second operand 6 states and 1914 transitions. [2023-08-30 05:03:36,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 98 transitions, 596 flow [2023-08-30 05:03:37,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 98 transitions, 552 flow, removed 12 selfloop flow, removed 3 redundant places. [2023-08-30 05:03:37,012 INFO L231 Difference]: Finished difference. Result has 67 places, 39 transitions, 198 flow [2023-08-30 05:03:37,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=198, PETRI_PLACES=67, PETRI_TRANSITIONS=39} [2023-08-30 05:03:37,012 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 16 predicate places. [2023-08-30 05:03:37,012 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 39 transitions, 198 flow [2023-08-30 05:03:37,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 310.5) internal successors, (1863), 6 states have internal predecessors, (1863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:37,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:03:37,013 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:03:37,026 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2023-08-30 05:03:37,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:03:37,223 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:03:37,224 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:03:37,224 INFO L85 PathProgramCache]: Analyzing trace with hash -402423942, now seen corresponding path program 3 times [2023-08-30 05:03:37,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:03:37,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1442774437] [2023-08-30 05:03:37,224 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 05:03:37,224 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:03:37,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:03:37,225 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:03:37,226 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 (26)] Waiting until timeout for monitored process [2023-08-30 05:03:37,345 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-30 05:03:37,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:03:37,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-30 05:03:37,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:03:37,575 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:03:37,576 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 05:03:37,576 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:03:37,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1442774437] [2023-08-30 05:03:37,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1442774437] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:03:37,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:03:37,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 05:03:37,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934088784] [2023-08-30 05:03:37,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:03:37,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 05:03:37,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:03:37,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 05:03:37,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-30 05:03:38,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 781 [2023-08-30 05:03:38,017 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 39 transitions, 198 flow. Second operand has 8 states, 8 states have (on average 305.625) internal successors, (2445), 8 states have internal predecessors, (2445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:38,017 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:03:38,017 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 781 [2023-08-30 05:03:38,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:03:39,519 INFO L130 PetriNetUnfolder]: 5218/8196 cut-off events. [2023-08-30 05:03:39,519 INFO L131 PetriNetUnfolder]: For 11747/11747 co-relation queries the response was YES. [2023-08-30 05:03:39,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26687 conditions, 8196 events. 5218/8196 cut-off events. For 11747/11747 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 49029 event pairs, 3751 based on Foata normal form. 5/8201 useless extension candidates. Maximal degree in co-relation 26663. Up to 5845 conditions per place. [2023-08-30 05:03:39,552 INFO L137 encePairwiseOnDemand]: 772/781 looper letters, 102 selfloop transitions, 8 changer transitions 8/118 dead transitions. [2023-08-30 05:03:39,552 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 118 transitions, 823 flow [2023-08-30 05:03:39,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 05:03:39,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 05:03:39,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2204 transitions. [2023-08-30 05:03:39,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4031461496250229 [2023-08-30 05:03:39,554 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2204 transitions. [2023-08-30 05:03:39,554 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2204 transitions. [2023-08-30 05:03:39,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:03:39,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2204 transitions. [2023-08-30 05:03:39,556 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 314.85714285714283) internal successors, (2204), 7 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:39,559 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:39,559 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:39,559 INFO L175 Difference]: Start difference. First operand has 67 places, 39 transitions, 198 flow. Second operand 7 states and 2204 transitions. [2023-08-30 05:03:39,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 118 transitions, 823 flow [2023-08-30 05:03:39,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 118 transitions, 757 flow, removed 20 selfloop flow, removed 3 redundant places. [2023-08-30 05:03:39,568 INFO L231 Difference]: Finished difference. Result has 73 places, 44 transitions, 253 flow [2023-08-30 05:03:39,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=253, PETRI_PLACES=73, PETRI_TRANSITIONS=44} [2023-08-30 05:03:39,569 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 22 predicate places. [2023-08-30 05:03:39,569 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 44 transitions, 253 flow [2023-08-30 05:03:39,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 305.625) internal successors, (2445), 8 states have internal predecessors, (2445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:39,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:03:39,570 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:03:39,578 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 (26)] Ended with exit code 0 [2023-08-30 05:03:39,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:03:39,774 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:03:39,774 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:03:39,774 INFO L85 PathProgramCache]: Analyzing trace with hash -207091048, now seen corresponding path program 4 times [2023-08-30 05:03:39,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:03:39,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [599115120] [2023-08-30 05:03:39,774 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 05:03:39,774 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:03:39,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:03:39,775 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:03:39,777 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 (27)] Waiting until timeout for monitored process [2023-08-30 05:03:39,908 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 05:03:39,909 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:03:39,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-30 05:03:39,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:03:40,145 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:03:40,145 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 05:03:40,145 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:03:40,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [599115120] [2023-08-30 05:03:40,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [599115120] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:03:40,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:03:40,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 05:03:40,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032677892] [2023-08-30 05:03:40,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:03:40,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 05:03:40,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:03:40,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 05:03:40,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 05:03:40,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 781 [2023-08-30 05:03:40,522 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 44 transitions, 253 flow. Second operand has 6 states, 6 states have (on average 310.5) internal successors, (1863), 6 states have internal predecessors, (1863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:40,522 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:03:40,522 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 781 [2023-08-30 05:03:40,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:03:42,160 INFO L130 PetriNetUnfolder]: 5501/8670 cut-off events. [2023-08-30 05:03:42,161 INFO L131 PetriNetUnfolder]: For 13602/13602 co-relation queries the response was YES. [2023-08-30 05:03:42,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29147 conditions, 8670 events. 5501/8670 cut-off events. For 13602/13602 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 52811 event pairs, 3800 based on Foata normal form. 6/8676 useless extension candidates. Maximal degree in co-relation 29120. Up to 6112 conditions per place. [2023-08-30 05:03:42,194 INFO L137 encePairwiseOnDemand]: 774/781 looper letters, 83 selfloop transitions, 18 changer transitions 14/115 dead transitions. [2023-08-30 05:03:42,194 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 115 transitions, 833 flow [2023-08-30 05:03:42,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 05:03:42,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 05:03:42,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1917 transitions. [2023-08-30 05:03:42,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2023-08-30 05:03:42,197 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1917 transitions. [2023-08-30 05:03:42,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1917 transitions. [2023-08-30 05:03:42,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:03:42,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1917 transitions. [2023-08-30 05:03:42,200 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 319.5) internal successors, (1917), 6 states have internal predecessors, (1917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:42,202 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 781.0) internal successors, (5467), 7 states have internal predecessors, (5467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:42,203 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 781.0) internal successors, (5467), 7 states have internal predecessors, (5467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:42,203 INFO L175 Difference]: Start difference. First operand has 73 places, 44 transitions, 253 flow. Second operand 6 states and 1917 transitions. [2023-08-30 05:03:42,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 115 transitions, 833 flow [2023-08-30 05:03:42,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 115 transitions, 790 flow, removed 9 selfloop flow, removed 3 redundant places. [2023-08-30 05:03:42,223 INFO L231 Difference]: Finished difference. Result has 78 places, 54 transitions, 408 flow [2023-08-30 05:03:42,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=408, PETRI_PLACES=78, PETRI_TRANSITIONS=54} [2023-08-30 05:03:42,223 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 27 predicate places. [2023-08-30 05:03:42,223 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 54 transitions, 408 flow [2023-08-30 05:03:42,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 310.5) internal successors, (1863), 6 states have internal predecessors, (1863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:42,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:03:42,224 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:03:42,235 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 (27)] Ended with exit code 0 [2023-08-30 05:03:42,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:03:42,435 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:03:42,435 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:03:42,435 INFO L85 PathProgramCache]: Analyzing trace with hash -2143863636, now seen corresponding path program 5 times [2023-08-30 05:03:42,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:03:42,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2039477147] [2023-08-30 05:03:42,436 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 05:03:42,436 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:03:42,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:03:42,437 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:03:42,438 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 (28)] Waiting until timeout for monitored process [2023-08-30 05:03:42,589 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-30 05:03:42,590 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:03:42,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-30 05:03:42,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:03:42,921 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:03:42,921 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 05:03:42,922 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:03:42,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2039477147] [2023-08-30 05:03:42,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2039477147] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:03:42,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:03:42,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 05:03:42,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845789454] [2023-08-30 05:03:42,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:03:42,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 05:03:42,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:03:42,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 05:03:42,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-30 05:03:43,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 781 [2023-08-30 05:03:43,436 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 54 transitions, 408 flow. Second operand has 8 states, 8 states have (on average 305.625) internal successors, (2445), 8 states have internal predecessors, (2445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:43,436 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:03:43,436 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 781 [2023-08-30 05:03:43,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:03:45,227 INFO L130 PetriNetUnfolder]: 5837/9233 cut-off events. [2023-08-30 05:03:45,228 INFO L131 PetriNetUnfolder]: For 26337/26337 co-relation queries the response was YES. [2023-08-30 05:03:45,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34928 conditions, 9233 events. 5837/9233 cut-off events. For 26337/26337 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 57221 event pairs, 3849 based on Foata normal form. 5/9238 useless extension candidates. Maximal degree in co-relation 34898. Up to 6155 conditions per place. [2023-08-30 05:03:45,270 INFO L137 encePairwiseOnDemand]: 772/781 looper letters, 123 selfloop transitions, 23 changer transitions 8/154 dead transitions. [2023-08-30 05:03:45,270 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 154 transitions, 1374 flow [2023-08-30 05:03:45,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 05:03:45,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 05:03:45,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2209 transitions. [2023-08-30 05:03:45,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40406072800438997 [2023-08-30 05:03:45,272 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2209 transitions. [2023-08-30 05:03:45,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2209 transitions. [2023-08-30 05:03:45,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:03:45,273 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2209 transitions. [2023-08-30 05:03:45,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 315.57142857142856) internal successors, (2209), 7 states have internal predecessors, (2209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:45,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:45,277 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:45,277 INFO L175 Difference]: Start difference. First operand has 78 places, 54 transitions, 408 flow. Second operand 7 states and 2209 transitions. [2023-08-30 05:03:45,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 154 transitions, 1374 flow [2023-08-30 05:03:45,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 154 transitions, 1332 flow, removed 10 selfloop flow, removed 2 redundant places. [2023-08-30 05:03:45,305 INFO L231 Difference]: Finished difference. Result has 86 places, 68 transitions, 663 flow [2023-08-30 05:03:45,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=663, PETRI_PLACES=86, PETRI_TRANSITIONS=68} [2023-08-30 05:03:45,306 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 35 predicate places. [2023-08-30 05:03:45,306 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 68 transitions, 663 flow [2023-08-30 05:03:45,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 305.625) internal successors, (2445), 8 states have internal predecessors, (2445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:45,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:03:45,307 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:03:45,321 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 (28)] Forceful destruction successful, exit code 0 [2023-08-30 05:03:45,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:03:45,519 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:03:45,519 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:03:45,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1195217666, now seen corresponding path program 6 times [2023-08-30 05:03:45,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:03:45,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1046551251] [2023-08-30 05:03:45,519 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 05:03:45,519 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:03:45,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:03:45,520 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:03:45,521 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 (29)] Waiting until timeout for monitored process [2023-08-30 05:03:45,663 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-08-30 05:03:45,664 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:03:45,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-30 05:03:45,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:03:45,926 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:03:45,927 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 05:03:45,927 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:03:45,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1046551251] [2023-08-30 05:03:45,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1046551251] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:03:45,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:03:45,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 05:03:45,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458763186] [2023-08-30 05:03:45,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:03:45,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 05:03:45,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:03:45,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 05:03:45,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 05:03:46,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 781 [2023-08-30 05:03:46,218 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 68 transitions, 663 flow. Second operand has 6 states, 6 states have (on average 310.5) internal successors, (1863), 6 states have internal predecessors, (1863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:46,219 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:03:46,219 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 781 [2023-08-30 05:03:46,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:03:47,888 INFO L130 PetriNetUnfolder]: 5836/9296 cut-off events. [2023-08-30 05:03:47,888 INFO L131 PetriNetUnfolder]: For 36049/36049 co-relation queries the response was YES. [2023-08-30 05:03:47,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38328 conditions, 9296 events. 5836/9296 cut-off events. For 36049/36049 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 58144 event pairs, 3856 based on Foata normal form. 9/9305 useless extension candidates. Maximal degree in co-relation 38294. Up to 6386 conditions per place. [2023-08-30 05:03:47,928 INFO L137 encePairwiseOnDemand]: 774/781 looper letters, 89 selfloop transitions, 39 changer transitions 17/145 dead transitions. [2023-08-30 05:03:47,929 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 145 transitions, 1483 flow [2023-08-30 05:03:47,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 05:03:47,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 05:03:47,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1913 transitions. [2023-08-30 05:03:47,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4082373026034998 [2023-08-30 05:03:47,933 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1913 transitions. [2023-08-30 05:03:47,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1913 transitions. [2023-08-30 05:03:47,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:03:47,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1913 transitions. [2023-08-30 05:03:47,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 318.8333333333333) internal successors, (1913), 6 states have internal predecessors, (1913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:47,938 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 781.0) internal successors, (5467), 7 states have internal predecessors, (5467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:47,939 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 781.0) internal successors, (5467), 7 states have internal predecessors, (5467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:47,939 INFO L175 Difference]: Start difference. First operand has 86 places, 68 transitions, 663 flow. Second operand 6 states and 1913 transitions. [2023-08-30 05:03:47,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 145 transitions, 1483 flow [2023-08-30 05:03:47,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 145 transitions, 1441 flow, removed 14 selfloop flow, removed 2 redundant places. [2023-08-30 05:03:47,979 INFO L231 Difference]: Finished difference. Result has 92 places, 82 transitions, 973 flow [2023-08-30 05:03:47,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=646, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=973, PETRI_PLACES=92, PETRI_TRANSITIONS=82} [2023-08-30 05:03:47,980 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 41 predicate places. [2023-08-30 05:03:47,980 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 82 transitions, 973 flow [2023-08-30 05:03:47,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 310.5) internal successors, (1863), 6 states have internal predecessors, (1863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:47,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:03:47,981 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:03:47,989 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 (29)] Ended with exit code 0 [2023-08-30 05:03:48,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:03:48,185 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:03:48,185 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:03:48,185 INFO L85 PathProgramCache]: Analyzing trace with hash -967072956, now seen corresponding path program 7 times [2023-08-30 05:03:48,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:03:48,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [770268957] [2023-08-30 05:03:48,186 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-30 05:03:48,186 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:03:48,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:03:48,187 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:03:48,187 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 (30)] Waiting until timeout for monitored process [2023-08-30 05:03:48,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:03:48,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-30 05:03:48,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:03:49,311 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:03:49,312 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 05:03:49,312 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:03:49,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [770268957] [2023-08-30 05:03:49,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [770268957] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:03:49,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:03:49,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 05:03:49,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514384959] [2023-08-30 05:03:49,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:03:49,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 05:03:49,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:03:49,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 05:03:49,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-08-30 05:03:50,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 781 [2023-08-30 05:03:50,503 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 82 transitions, 973 flow. Second operand has 8 states, 8 states have (on average 303.625) internal successors, (2429), 8 states have internal predecessors, (2429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:50,503 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:03:50,503 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 781 [2023-08-30 05:03:50,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:03:53,113 INFO L130 PetriNetUnfolder]: 6128/9732 cut-off events. [2023-08-30 05:03:53,113 INFO L131 PetriNetUnfolder]: For 55634/55634 co-relation queries the response was YES. [2023-08-30 05:03:53,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44123 conditions, 9732 events. 6128/9732 cut-off events. For 55634/55634 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 61407 event pairs, 3775 based on Foata normal form. 7/9739 useless extension candidates. Maximal degree in co-relation 44086. Up to 6179 conditions per place. [2023-08-30 05:03:53,165 INFO L137 encePairwiseOnDemand]: 771/781 looper letters, 161 selfloop transitions, 27 changer transitions 8/196 dead transitions. [2023-08-30 05:03:53,165 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 196 transitions, 2389 flow [2023-08-30 05:03:53,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 05:03:53,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 05:03:53,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2503 transitions. [2023-08-30 05:03:53,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40060819462227915 [2023-08-30 05:03:53,168 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2503 transitions. [2023-08-30 05:03:53,168 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2503 transitions. [2023-08-30 05:03:53,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:03:53,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2503 transitions. [2023-08-30 05:03:53,171 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 312.875) internal successors, (2503), 8 states have internal predecessors, (2503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:53,173 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 781.0) internal successors, (7029), 9 states have internal predecessors, (7029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:53,174 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 781.0) internal successors, (7029), 9 states have internal predecessors, (7029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:53,174 INFO L175 Difference]: Start difference. First operand has 92 places, 82 transitions, 973 flow. Second operand 8 states and 2503 transitions. [2023-08-30 05:03:53,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 196 transitions, 2389 flow [2023-08-30 05:03:53,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 196 transitions, 2187 flow, removed 41 selfloop flow, removed 3 redundant places. [2023-08-30 05:03:53,243 INFO L231 Difference]: Finished difference. Result has 101 places, 102 transitions, 1227 flow [2023-08-30 05:03:53,243 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=869, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1227, PETRI_PLACES=101, PETRI_TRANSITIONS=102} [2023-08-30 05:03:53,244 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 50 predicate places. [2023-08-30 05:03:53,244 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 102 transitions, 1227 flow [2023-08-30 05:03:53,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 303.625) internal successors, (2429), 8 states have internal predecessors, (2429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:53,245 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:03:53,245 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:03:53,254 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 (30)] Forceful destruction successful, exit code 0 [2023-08-30 05:03:53,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:03:53,446 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:03:53,447 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:03:53,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1282802204, now seen corresponding path program 8 times [2023-08-30 05:03:53,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:03:53,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [585161224] [2023-08-30 05:03:53,447 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 05:03:53,447 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:03:53,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:03:53,448 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:03:53,449 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 (31)] Waiting until timeout for monitored process [2023-08-30 05:03:53,579 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 05:03:53,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:03:53,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-30 05:03:53,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:03:53,807 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:03:53,807 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 05:03:53,808 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:03:53,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [585161224] [2023-08-30 05:03:53,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [585161224] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:03:53,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:03:53,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 05:03:53,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715800122] [2023-08-30 05:03:53,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:03:53,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 05:03:53,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:03:53,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 05:03:53,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 05:03:54,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 781 [2023-08-30 05:03:54,079 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 102 transitions, 1227 flow. Second operand has 6 states, 6 states have (on average 310.5) internal successors, (1863), 6 states have internal predecessors, (1863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:54,079 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:03:54,079 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 781 [2023-08-30 05:03:54,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:03:55,870 INFO L130 PetriNetUnfolder]: 6122/9703 cut-off events. [2023-08-30 05:03:55,871 INFO L131 PetriNetUnfolder]: For 55403/55403 co-relation queries the response was YES. [2023-08-30 05:03:55,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45476 conditions, 9703 events. 6122/9703 cut-off events. For 55403/55403 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 60786 event pairs, 3935 based on Foata normal form. 10/9713 useless extension candidates. Maximal degree in co-relation 45434. Up to 6577 conditions per place. [2023-08-30 05:03:55,936 INFO L137 encePairwiseOnDemand]: 774/781 looper letters, 106 selfloop transitions, 52 changer transitions 18/176 dead transitions. [2023-08-30 05:03:55,936 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 176 transitions, 2106 flow [2023-08-30 05:03:55,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 05:03:55,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 05:03:55,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1913 transitions. [2023-08-30 05:03:55,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4082373026034998 [2023-08-30 05:03:55,938 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1913 transitions. [2023-08-30 05:03:55,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1913 transitions. [2023-08-30 05:03:55,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:03:55,939 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1913 transitions. [2023-08-30 05:03:55,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 318.8333333333333) internal successors, (1913), 6 states have internal predecessors, (1913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:55,944 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 781.0) internal successors, (5467), 7 states have internal predecessors, (5467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:55,944 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 781.0) internal successors, (5467), 7 states have internal predecessors, (5467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:55,944 INFO L175 Difference]: Start difference. First operand has 101 places, 102 transitions, 1227 flow. Second operand 6 states and 1913 transitions. [2023-08-30 05:03:55,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 176 transitions, 2106 flow [2023-08-30 05:03:56,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 176 transitions, 2090 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-08-30 05:03:56,056 INFO L231 Difference]: Finished difference. Result has 107 places, 110 transitions, 1462 flow [2023-08-30 05:03:56,056 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=1213, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1462, PETRI_PLACES=107, PETRI_TRANSITIONS=110} [2023-08-30 05:03:56,056 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 56 predicate places. [2023-08-30 05:03:56,056 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 110 transitions, 1462 flow [2023-08-30 05:03:56,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 310.5) internal successors, (1863), 6 states have internal predecessors, (1863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:56,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:03:56,057 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:03:56,065 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 (31)] Ended with exit code 0 [2023-08-30 05:03:56,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:03:56,257 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:03:56,258 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:03:56,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1310716994, now seen corresponding path program 9 times [2023-08-30 05:03:56,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:03:56,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [502795607] [2023-08-30 05:03:56,258 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 05:03:56,258 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:03:56,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:03:56,261 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:03:56,263 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 (32)] Waiting until timeout for monitored process [2023-08-30 05:03:56,387 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-30 05:03:56,388 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:03:56,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-30 05:03:56,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:03:56,634 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:03:56,634 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 05:03:56,635 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:03:56,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [502795607] [2023-08-30 05:03:56,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [502795607] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:03:56,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:03:56,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 05:03:56,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100642553] [2023-08-30 05:03:56,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:03:56,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 05:03:56,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:03:56,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 05:03:56,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-08-30 05:03:57,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 781 [2023-08-30 05:03:57,067 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 110 transitions, 1462 flow. Second operand has 8 states, 8 states have (on average 305.625) internal successors, (2445), 8 states have internal predecessors, (2445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:57,067 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:03:57,067 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 781 [2023-08-30 05:03:57,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:03:59,063 INFO L130 PetriNetUnfolder]: 6101/9689 cut-off events. [2023-08-30 05:03:59,063 INFO L131 PetriNetUnfolder]: For 69657/69657 co-relation queries the response was YES. [2023-08-30 05:03:59,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47897 conditions, 9689 events. 6101/9689 cut-off events. For 69657/69657 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 60422 event pairs, 3962 based on Foata normal form. 5/9694 useless extension candidates. Maximal degree in co-relation 47852. Up to 6742 conditions per place. [2023-08-30 05:03:59,121 INFO L137 encePairwiseOnDemand]: 772/781 looper letters, 135 selfloop transitions, 56 changer transitions 8/199 dead transitions. [2023-08-30 05:03:59,121 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 199 transitions, 2701 flow [2023-08-30 05:03:59,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 05:03:59,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 05:03:59,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2199 transitions. [2023-08-30 05:03:59,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40223157124565573 [2023-08-30 05:03:59,123 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2199 transitions. [2023-08-30 05:03:59,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2199 transitions. [2023-08-30 05:03:59,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:03:59,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2199 transitions. [2023-08-30 05:03:59,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:59,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:59,128 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:59,128 INFO L175 Difference]: Start difference. First operand has 107 places, 110 transitions, 1462 flow. Second operand 7 states and 2199 transitions. [2023-08-30 05:03:59,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 199 transitions, 2701 flow [2023-08-30 05:03:59,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 199 transitions, 2558 flow, removed 23 selfloop flow, removed 4 redundant places. [2023-08-30 05:03:59,245 INFO L231 Difference]: Finished difference. Result has 113 places, 129 transitions, 1836 flow [2023-08-30 05:03:59,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=1374, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1836, PETRI_PLACES=113, PETRI_TRANSITIONS=129} [2023-08-30 05:03:59,246 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 62 predicate places. [2023-08-30 05:03:59,246 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 129 transitions, 1836 flow [2023-08-30 05:03:59,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 305.625) internal successors, (2445), 8 states have internal predecessors, (2445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:03:59,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:03:59,246 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:03:59,256 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 (32)] Ended with exit code 0 [2023-08-30 05:03:59,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:03:59,452 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:03:59,452 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:03:59,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1412301778, now seen corresponding path program 10 times [2023-08-30 05:03:59,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:03:59,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1598366744] [2023-08-30 05:03:59,452 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 05:03:59,453 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 [2023-08-30 05:03:59,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:03:59,454 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:03:59,455 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 (33)] Waiting until timeout for monitored process [2023-08-30 05:03:59,596 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 05:03:59,597 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:03:59,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-30 05:03:59,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:03:59,840 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:03:59,841 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 05:03:59,841 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:03:59,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1598366744] [2023-08-30 05:03:59,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1598366744] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:03:59,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:03:59,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 05:03:59,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497750223] [2023-08-30 05:03:59,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:03:59,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 05:03:59,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:03:59,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 05:03:59,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-08-30 05:04:00,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 302 out of 781 [2023-08-30 05:04:00,297 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 129 transitions, 1836 flow. Second operand has 8 states, 8 states have (on average 304.625) internal successors, (2437), 8 states have internal predecessors, (2437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:00,297 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:04:00,297 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 302 of 781 [2023-08-30 05:04:00,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:04:02,403 INFO L130 PetriNetUnfolder]: 6091/9667 cut-off events. [2023-08-30 05:04:02,403 INFO L131 PetriNetUnfolder]: For 81035/81035 co-relation queries the response was YES. [2023-08-30 05:04:02,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50085 conditions, 9667 events. 6091/9667 cut-off events. For 81035/81035 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 60492 event pairs, 3726 based on Foata normal form. 5/9672 useless extension candidates. Maximal degree in co-relation 50037. Up to 6118 conditions per place. [2023-08-30 05:04:02,467 INFO L137 encePairwiseOnDemand]: 772/781 looper letters, 162 selfloop transitions, 29 changer transitions 8/199 dead transitions. [2023-08-30 05:04:02,467 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 199 transitions, 2702 flow [2023-08-30 05:04:02,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 05:04:02,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 05:04:02,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2198 transitions. [2023-08-30 05:04:02,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4020486555697823 [2023-08-30 05:04:02,470 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2198 transitions. [2023-08-30 05:04:02,470 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2198 transitions. [2023-08-30 05:04:02,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:04:02,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2198 transitions. [2023-08-30 05:04:02,473 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 314.0) internal successors, (2198), 7 states have internal predecessors, (2198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:02,476 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:02,477 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:02,477 INFO L175 Difference]: Start difference. First operand has 113 places, 129 transitions, 1836 flow. Second operand 7 states and 2198 transitions. [2023-08-30 05:04:02,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 199 transitions, 2702 flow [2023-08-30 05:04:02,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 199 transitions, 2583 flow, removed 35 selfloop flow, removed 2 redundant places. [2023-08-30 05:04:02,589 INFO L231 Difference]: Finished difference. Result has 119 places, 131 transitions, 1849 flow [2023-08-30 05:04:02,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=1723, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1849, PETRI_PLACES=119, PETRI_TRANSITIONS=131} [2023-08-30 05:04:02,589 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 68 predicate places. [2023-08-30 05:04:02,589 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 131 transitions, 1849 flow [2023-08-30 05:04:02,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 304.625) internal successors, (2437), 8 states have internal predecessors, (2437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:02,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:04:02,590 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:04:02,598 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 (33)] Ended with exit code 0 [2023-08-30 05:04:02,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:04:02,791 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:04:02,791 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:04:02,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1005431846, now seen corresponding path program 11 times [2023-08-30 05:04:02,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:04:02,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [693408133] [2023-08-30 05:04:02,792 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 05:04:02,792 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:04:02,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:04:02,793 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:04:02,793 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 (34)] Waiting until timeout for monitored process [2023-08-30 05:04:02,946 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-30 05:04:02,947 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:04:02,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-30 05:04:02,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:04:03,808 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:04:03,808 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 05:04:03,808 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:04:03,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [693408133] [2023-08-30 05:04:03,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [693408133] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:04:03,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:04:03,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 05:04:03,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843880759] [2023-08-30 05:04:03,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:04:03,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 05:04:03,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:04:03,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 05:04:03,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-08-30 05:04:04,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 781 [2023-08-30 05:04:04,811 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 131 transitions, 1849 flow. Second operand has 8 states, 8 states have (on average 303.625) internal successors, (2429), 8 states have internal predecessors, (2429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:04,812 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:04:04,812 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 781 [2023-08-30 05:04:04,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:04:07,495 INFO L130 PetriNetUnfolder]: 6097/9677 cut-off events. [2023-08-30 05:04:07,496 INFO L131 PetriNetUnfolder]: For 80010/80010 co-relation queries the response was YES. [2023-08-30 05:04:07,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50213 conditions, 9677 events. 6097/9677 cut-off events. For 80010/80010 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 60787 event pairs, 3744 based on Foata normal form. 5/9682 useless extension candidates. Maximal degree in co-relation 50163. Up to 6122 conditions per place. [2023-08-30 05:04:07,556 INFO L137 encePairwiseOnDemand]: 771/781 looper letters, 158 selfloop transitions, 53 changer transitions 9/220 dead transitions. [2023-08-30 05:04:07,557 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 220 transitions, 3026 flow [2023-08-30 05:04:07,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 05:04:07,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 05:04:07,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2500 transitions. [2023-08-30 05:04:07,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4001280409731114 [2023-08-30 05:04:07,559 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2500 transitions. [2023-08-30 05:04:07,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2500 transitions. [2023-08-30 05:04:07,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:04:07,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2500 transitions. [2023-08-30 05:04:07,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 312.5) internal successors, (2500), 8 states have internal predecessors, (2500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:07,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 781.0) internal successors, (7029), 9 states have internal predecessors, (7029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:07,566 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 781.0) internal successors, (7029), 9 states have internal predecessors, (7029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:07,566 INFO L175 Difference]: Start difference. First operand has 119 places, 131 transitions, 1849 flow. Second operand 8 states and 2500 transitions. [2023-08-30 05:04:07,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 220 transitions, 3026 flow [2023-08-30 05:04:07,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 220 transitions, 2943 flow, removed 13 selfloop flow, removed 4 redundant places. [2023-08-30 05:04:07,695 INFO L231 Difference]: Finished difference. Result has 126 places, 143 transitions, 2150 flow [2023-08-30 05:04:07,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=1794, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2150, PETRI_PLACES=126, PETRI_TRANSITIONS=143} [2023-08-30 05:04:07,696 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 75 predicate places. [2023-08-30 05:04:07,696 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 143 transitions, 2150 flow [2023-08-30 05:04:07,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 303.625) internal successors, (2429), 8 states have internal predecessors, (2429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:07,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:04:07,697 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:04:07,708 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 (34)] Forceful destruction successful, exit code 0 [2023-08-30 05:04:07,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:04:07,905 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:04:07,905 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:04:07,905 INFO L85 PathProgramCache]: Analyzing trace with hash 197282022, now seen corresponding path program 12 times [2023-08-30 05:04:07,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:04:07,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1217513320] [2023-08-30 05:04:07,906 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 05:04:07,906 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:04:07,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:04:07,907 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:04:07,907 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 (35)] Waiting until timeout for monitored process [2023-08-30 05:04:08,046 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-08-30 05:04:08,047 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:04:08,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-30 05:04:08,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:04:08,398 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:04:08,399 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 05:04:08,399 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:04:08,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1217513320] [2023-08-30 05:04:08,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1217513320] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:04:08,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:04:08,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 05:04:08,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822604344] [2023-08-30 05:04:08,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:04:08,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 05:04:08,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:04:08,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 05:04:08,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-08-30 05:04:08,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 781 [2023-08-30 05:04:08,901 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 143 transitions, 2150 flow. Second operand has 8 states, 8 states have (on average 303.625) internal successors, (2429), 8 states have internal predecessors, (2429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:08,901 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:04:08,901 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 781 [2023-08-30 05:04:08,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:04:11,045 INFO L130 PetriNetUnfolder]: 6087/9655 cut-off events. [2023-08-30 05:04:11,046 INFO L131 PetriNetUnfolder]: For 91180/91180 co-relation queries the response was YES. [2023-08-30 05:04:11,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51754 conditions, 9655 events. 6087/9655 cut-off events. For 91180/91180 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 60456 event pairs, 3758 based on Foata normal form. 5/9660 useless extension candidates. Maximal degree in co-relation 51700. Up to 6122 conditions per place. [2023-08-30 05:04:11,112 INFO L137 encePairwiseOnDemand]: 772/781 looper letters, 152 selfloop transitions, 58 changer transitions 8/218 dead transitions. [2023-08-30 05:04:11,112 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 218 transitions, 3193 flow [2023-08-30 05:04:11,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 05:04:11,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 05:04:11,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2197 transitions. [2023-08-30 05:04:11,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4018657398939089 [2023-08-30 05:04:11,115 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2197 transitions. [2023-08-30 05:04:11,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2197 transitions. [2023-08-30 05:04:11,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:04:11,116 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2197 transitions. [2023-08-30 05:04:11,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 313.85714285714283) internal successors, (2197), 7 states have internal predecessors, (2197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:11,121 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:11,122 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:11,122 INFO L175 Difference]: Start difference. First operand has 126 places, 143 transitions, 2150 flow. Second operand 7 states and 2197 transitions. [2023-08-30 05:04:11,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 218 transitions, 3193 flow [2023-08-30 05:04:11,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 218 transitions, 3101 flow, removed 22 selfloop flow, removed 3 redundant places. [2023-08-30 05:04:11,293 INFO L231 Difference]: Finished difference. Result has 132 places, 155 transitions, 2484 flow [2023-08-30 05:04:11,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=2076, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2484, PETRI_PLACES=132, PETRI_TRANSITIONS=155} [2023-08-30 05:04:11,294 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 81 predicate places. [2023-08-30 05:04:11,294 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 155 transitions, 2484 flow [2023-08-30 05:04:11,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 303.625) internal successors, (2429), 8 states have internal predecessors, (2429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:11,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:04:11,295 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:04:11,302 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 (35)] Forceful destruction successful, exit code 0 [2023-08-30 05:04:11,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:04:11,495 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:04:11,495 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:04:11,496 INFO L85 PathProgramCache]: Analyzing trace with hash -201991596, now seen corresponding path program 13 times [2023-08-30 05:04:11,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:04:11,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [37094729] [2023-08-30 05:04:11,496 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-30 05:04:11,496 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:04:11,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:04:11,498 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:04:11,498 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 (36)] Waiting until timeout for monitored process [2023-08-30 05:04:11,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:04:11,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-30 05:04:11,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:04:12,071 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:04:12,071 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 05:04:12,071 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:04:12,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [37094729] [2023-08-30 05:04:12,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [37094729] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:04:12,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:04:12,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 05:04:12,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694414696] [2023-08-30 05:04:12,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:04:12,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 05:04:12,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:04:12,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 05:04:12,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-08-30 05:04:12,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 302 out of 781 [2023-08-30 05:04:12,620 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 155 transitions, 2484 flow. Second operand has 8 states, 8 states have (on average 304.625) internal successors, (2437), 8 states have internal predecessors, (2437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:12,620 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:04:12,620 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 302 of 781 [2023-08-30 05:04:12,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:04:14,843 INFO L130 PetriNetUnfolder]: 6077/9633 cut-off events. [2023-08-30 05:04:14,843 INFO L131 PetriNetUnfolder]: For 93094/93094 co-relation queries the response was YES. [2023-08-30 05:04:14,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52024 conditions, 9633 events. 6077/9633 cut-off events. For 93094/93094 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 60042 event pairs, 3754 based on Foata normal form. 5/9638 useless extension candidates. Maximal degree in co-relation 51967. Up to 6122 conditions per place. [2023-08-30 05:04:14,905 INFO L137 encePairwiseOnDemand]: 772/781 looper letters, 150 selfloop transitions, 58 changer transitions 8/216 dead transitions. [2023-08-30 05:04:14,905 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 216 transitions, 3301 flow [2023-08-30 05:04:14,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 05:04:14,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 05:04:14,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2202 transitions. [2023-08-30 05:04:14,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40278031827327604 [2023-08-30 05:04:14,908 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2202 transitions. [2023-08-30 05:04:14,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2202 transitions. [2023-08-30 05:04:14,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:04:14,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2202 transitions. [2023-08-30 05:04:14,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 314.57142857142856) internal successors, (2202), 7 states have internal predecessors, (2202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:14,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:14,914 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:14,914 INFO L175 Difference]: Start difference. First operand has 132 places, 155 transitions, 2484 flow. Second operand 7 states and 2202 transitions. [2023-08-30 05:04:14,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 216 transitions, 3301 flow [2023-08-30 05:04:15,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 216 transitions, 3205 flow, removed 23 selfloop flow, removed 3 redundant places. [2023-08-30 05:04:15,084 INFO L231 Difference]: Finished difference. Result has 137 places, 157 transitions, 2584 flow [2023-08-30 05:04:15,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=2387, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2584, PETRI_PLACES=137, PETRI_TRANSITIONS=157} [2023-08-30 05:04:15,085 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 86 predicate places. [2023-08-30 05:04:15,085 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 157 transitions, 2584 flow [2023-08-30 05:04:15,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 304.625) internal successors, (2437), 8 states have internal predecessors, (2437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:15,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:04:15,086 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:04:15,103 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 (36)] Forceful destruction successful, exit code 0 [2023-08-30 05:04:15,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:04:15,297 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:04:15,298 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:04:15,298 INFO L85 PathProgramCache]: Analyzing trace with hash -2090220844, now seen corresponding path program 14 times [2023-08-30 05:04:15,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:04:15,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [783986002] [2023-08-30 05:04:15,298 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 05:04:15,298 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:04:15,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:04:15,300 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:04:15,300 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 (37)] Waiting until timeout for monitored process [2023-08-30 05:04:15,444 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 05:04:15,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:04:15,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-30 05:04:15,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:04:15,643 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:04:15,643 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 05:04:15,643 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:04:15,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [783986002] [2023-08-30 05:04:15,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [783986002] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:04:15,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:04:15,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 05:04:15,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827403121] [2023-08-30 05:04:15,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:04:15,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 05:04:15,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:04:15,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 05:04:15,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-08-30 05:04:16,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 781 [2023-08-30 05:04:16,093 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 157 transitions, 2584 flow. Second operand has 8 states, 8 states have (on average 305.625) internal successors, (2445), 8 states have internal predecessors, (2445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:16,093 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:04:16,093 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 781 [2023-08-30 05:04:16,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:04:18,195 INFO L130 PetriNetUnfolder]: 6067/9611 cut-off events. [2023-08-30 05:04:18,196 INFO L131 PetriNetUnfolder]: For 94294/94294 co-relation queries the response was YES. [2023-08-30 05:04:18,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52009 conditions, 9611 events. 6067/9611 cut-off events. For 94294/94294 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 59916 event pairs, 3738 based on Foata normal form. 5/9616 useless extension candidates. Maximal degree in co-relation 51950. Up to 6122 conditions per place. [2023-08-30 05:04:18,267 INFO L137 encePairwiseOnDemand]: 772/781 looper letters, 161 selfloop transitions, 55 changer transitions 8/224 dead transitions. [2023-08-30 05:04:18,267 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 224 transitions, 3420 flow [2023-08-30 05:04:18,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 05:04:18,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 05:04:18,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2207 transitions. [2023-08-30 05:04:18,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40369489665264313 [2023-08-30 05:04:18,270 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2207 transitions. [2023-08-30 05:04:18,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2207 transitions. [2023-08-30 05:04:18,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:04:18,270 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2207 transitions. [2023-08-30 05:04:18,273 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 315.2857142857143) internal successors, (2207), 7 states have internal predecessors, (2207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:18,276 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:18,276 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:18,277 INFO L175 Difference]: Start difference. First operand has 137 places, 157 transitions, 2584 flow. Second operand 7 states and 2207 transitions. [2023-08-30 05:04:18,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 224 transitions, 3420 flow [2023-08-30 05:04:18,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 224 transitions, 3316 flow, removed 8 selfloop flow, removed 4 redundant places. [2023-08-30 05:04:18,465 INFO L231 Difference]: Finished difference. Result has 140 places, 156 transitions, 2578 flow [2023-08-30 05:04:18,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=2462, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2578, PETRI_PLACES=140, PETRI_TRANSITIONS=156} [2023-08-30 05:04:18,466 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 89 predicate places. [2023-08-30 05:04:18,466 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 156 transitions, 2578 flow [2023-08-30 05:04:18,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 305.625) internal successors, (2445), 8 states have internal predecessors, (2445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:18,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:04:18,466 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:04:18,476 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 (37)] Forceful destruction successful, exit code 0 [2023-08-30 05:04:18,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:04:18,667 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:04:18,667 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:04:18,667 INFO L85 PathProgramCache]: Analyzing trace with hash -146850300, now seen corresponding path program 15 times [2023-08-30 05:04:18,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:04:18,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [674487938] [2023-08-30 05:04:18,668 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 05:04:18,668 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:04:18,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:04:18,669 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:04:18,671 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 (38)] Waiting until timeout for monitored process [2023-08-30 05:04:18,814 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-30 05:04:18,814 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:04:18,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-30 05:04:18,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:04:19,175 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:04:19,175 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 05:04:19,175 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:04:19,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [674487938] [2023-08-30 05:04:19,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [674487938] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:04:19,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:04:19,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 05:04:19,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955873671] [2023-08-30 05:04:19,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:04:19,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 05:04:19,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:04:19,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 05:04:19,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-30 05:04:19,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 302 out of 781 [2023-08-30 05:04:19,626 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 156 transitions, 2578 flow. Second operand has 8 states, 8 states have (on average 304.625) internal successors, (2437), 8 states have internal predecessors, (2437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:19,626 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:04:19,626 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 302 of 781 [2023-08-30 05:04:19,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:04:21,723 INFO L130 PetriNetUnfolder]: 6057/9589 cut-off events. [2023-08-30 05:04:21,723 INFO L131 PetriNetUnfolder]: For 94816/94816 co-relation queries the response was YES. [2023-08-30 05:04:21,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51987 conditions, 9589 events. 6057/9589 cut-off events. For 94816/94816 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 59765 event pairs, 3746 based on Foata normal form. 5/9594 useless extension candidates. Maximal degree in co-relation 51927. Up to 6122 conditions per place. [2023-08-30 05:04:21,800 INFO L137 encePairwiseOnDemand]: 772/781 looper letters, 161 selfloop transitions, 51 changer transitions 8/220 dead transitions. [2023-08-30 05:04:21,800 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 220 transitions, 3389 flow [2023-08-30 05:04:21,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 05:04:21,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 05:04:21,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2201 transitions. [2023-08-30 05:04:21,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4025974025974026 [2023-08-30 05:04:21,802 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2201 transitions. [2023-08-30 05:04:21,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2201 transitions. [2023-08-30 05:04:21,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:04:21,803 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2201 transitions. [2023-08-30 05:04:21,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 314.42857142857144) internal successors, (2201), 7 states have internal predecessors, (2201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:21,807 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:21,808 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:21,808 INFO L175 Difference]: Start difference. First operand has 140 places, 156 transitions, 2578 flow. Second operand 7 states and 2201 transitions. [2023-08-30 05:04:21,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 220 transitions, 3389 flow [2023-08-30 05:04:21,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 220 transitions, 3273 flow, removed 12 selfloop flow, removed 4 redundant places. [2023-08-30 05:04:21,981 INFO L231 Difference]: Finished difference. Result has 142 places, 154 transitions, 2533 flow [2023-08-30 05:04:21,982 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=2449, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2533, PETRI_PLACES=142, PETRI_TRANSITIONS=154} [2023-08-30 05:04:21,982 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 91 predicate places. [2023-08-30 05:04:21,982 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 154 transitions, 2533 flow [2023-08-30 05:04:21,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 304.625) internal successors, (2437), 8 states have internal predecessors, (2437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:21,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:04:21,983 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:04:21,991 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 (38)] Forceful destruction successful, exit code 0 [2023-08-30 05:04:22,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:04:22,185 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:04:22,185 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:04:22,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1706802844, now seen corresponding path program 16 times [2023-08-30 05:04:22,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:04:22,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [438071575] [2023-08-30 05:04:22,186 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 05:04:22,186 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:04:22,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:04:22,187 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:04:22,188 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 (39)] Waiting until timeout for monitored process [2023-08-30 05:04:22,340 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 05:04:22,340 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:04:22,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-30 05:04:22,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:04:22,563 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:04:22,564 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 05:04:22,564 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:04:22,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [438071575] [2023-08-30 05:04:22,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [438071575] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:04:22,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:04:22,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 05:04:22,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840174627] [2023-08-30 05:04:22,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:04:22,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 05:04:22,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:04:22,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 05:04:22,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 05:04:22,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 781 [2023-08-30 05:04:22,882 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 154 transitions, 2533 flow. Second operand has 6 states, 6 states have (on average 310.5) internal successors, (1863), 6 states have internal predecessors, (1863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:22,882 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:04:22,882 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 781 [2023-08-30 05:04:22,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:04:24,991 INFO L130 PetriNetUnfolder]: 6133/9730 cut-off events. [2023-08-30 05:04:24,991 INFO L131 PetriNetUnfolder]: For 95625/95625 co-relation queries the response was YES. [2023-08-30 05:04:25,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52794 conditions, 9730 events. 6133/9730 cut-off events. For 95625/95625 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 60690 event pairs, 3976 based on Foata normal form. 8/9738 useless extension candidates. Maximal degree in co-relation 52734. Up to 6742 conditions per place. [2023-08-30 05:04:25,055 INFO L137 encePairwiseOnDemand]: 774/781 looper letters, 123 selfloop transitions, 75 changer transitions 17/215 dead transitions. [2023-08-30 05:04:25,055 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 215 transitions, 3438 flow [2023-08-30 05:04:25,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 05:04:25,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 05:04:25,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1913 transitions. [2023-08-30 05:04:25,057 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4082373026034998 [2023-08-30 05:04:25,057 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1913 transitions. [2023-08-30 05:04:25,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1913 transitions. [2023-08-30 05:04:25,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:04:25,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1913 transitions. [2023-08-30 05:04:25,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 318.8333333333333) internal successors, (1913), 6 states have internal predecessors, (1913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:25,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 781.0) internal successors, (5467), 7 states have internal predecessors, (5467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:25,061 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 781.0) internal successors, (5467), 7 states have internal predecessors, (5467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:25,061 INFO L175 Difference]: Start difference. First operand has 142 places, 154 transitions, 2533 flow. Second operand 6 states and 1913 transitions. [2023-08-30 05:04:25,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 215 transitions, 3438 flow [2023-08-30 05:04:25,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 215 transitions, 3306 flow, removed 6 selfloop flow, removed 6 redundant places. [2023-08-30 05:04:25,239 INFO L231 Difference]: Finished difference. Result has 143 places, 160 transitions, 2726 flow [2023-08-30 05:04:25,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=2423, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2726, PETRI_PLACES=143, PETRI_TRANSITIONS=160} [2023-08-30 05:04:25,239 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 92 predicate places. [2023-08-30 05:04:25,240 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 160 transitions, 2726 flow [2023-08-30 05:04:25,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 310.5) internal successors, (1863), 6 states have internal predecessors, (1863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:25,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:04:25,240 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:04:25,249 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 (39)] Forceful destruction successful, exit code 0 [2023-08-30 05:04:25,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:04:25,441 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:04:25,442 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:04:25,442 INFO L85 PathProgramCache]: Analyzing trace with hash -323265574, now seen corresponding path program 17 times [2023-08-30 05:04:25,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:04:25,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [205661580] [2023-08-30 05:04:25,442 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 05:04:25,442 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:04:25,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:04:25,443 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:04:25,444 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 (40)] Waiting until timeout for monitored process [2023-08-30 05:04:25,606 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-30 05:04:25,606 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:04:25,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-30 05:04:25,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:04:26,317 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:04:26,317 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 05:04:26,317 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:04:26,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [205661580] [2023-08-30 05:04:26,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [205661580] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:04:26,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:04:26,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 05:04:26,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717914111] [2023-08-30 05:04:26,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:04:26,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 05:04:26,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:04:26,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 05:04:26,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-08-30 05:04:27,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 781 [2023-08-30 05:04:27,392 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 160 transitions, 2726 flow. Second operand has 8 states, 8 states have (on average 303.625) internal successors, (2429), 8 states have internal predecessors, (2429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:27,392 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:04:27,392 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 781 [2023-08-30 05:04:27,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:04:30,224 INFO L130 PetriNetUnfolder]: 6164/9784 cut-off events. [2023-08-30 05:04:30,224 INFO L131 PetriNetUnfolder]: For 106116/106116 co-relation queries the response was YES. [2023-08-30 05:04:30,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54796 conditions, 9784 events. 6164/9784 cut-off events. For 106116/106116 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 61209 event pairs, 3934 based on Foata normal form. 5/9789 useless extension candidates. Maximal degree in co-relation 54736. Up to 6742 conditions per place. [2023-08-30 05:04:30,304 INFO L137 encePairwiseOnDemand]: 771/781 looper letters, 158 selfloop transitions, 70 changer transitions 9/237 dead transitions. [2023-08-30 05:04:30,304 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 237 transitions, 3815 flow [2023-08-30 05:04:30,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 05:04:30,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 05:04:30,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2498 transitions. [2023-08-30 05:04:30,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3998079385403329 [2023-08-30 05:04:30,307 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2498 transitions. [2023-08-30 05:04:30,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2498 transitions. [2023-08-30 05:04:30,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:04:30,307 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2498 transitions. [2023-08-30 05:04:30,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 312.25) internal successors, (2498), 8 states have internal predecessors, (2498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:30,312 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 781.0) internal successors, (7029), 9 states have internal predecessors, (7029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:30,313 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 781.0) internal successors, (7029), 9 states have internal predecessors, (7029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:30,313 INFO L175 Difference]: Start difference. First operand has 143 places, 160 transitions, 2726 flow. Second operand 8 states and 2498 transitions. [2023-08-30 05:04:30,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 237 transitions, 3815 flow [2023-08-30 05:04:30,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 237 transitions, 3710 flow, removed 26 selfloop flow, removed 3 redundant places. [2023-08-30 05:04:30,573 INFO L231 Difference]: Finished difference. Result has 151 places, 173 transitions, 3074 flow [2023-08-30 05:04:30,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=2637, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3074, PETRI_PLACES=151, PETRI_TRANSITIONS=173} [2023-08-30 05:04:30,574 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 100 predicate places. [2023-08-30 05:04:30,574 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 173 transitions, 3074 flow [2023-08-30 05:04:30,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 303.625) internal successors, (2429), 8 states have internal predecessors, (2429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:30,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:04:30,574 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:04:30,582 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 (40)] Ended with exit code 0 [2023-08-30 05:04:30,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:04:30,775 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:04:30,775 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:04:30,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1452080456, now seen corresponding path program 18 times [2023-08-30 05:04:30,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:04:30,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2128178274] [2023-08-30 05:04:30,776 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 05:04:30,776 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:04:30,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:04:30,777 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:04:30,780 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 (41)] Waiting until timeout for monitored process [2023-08-30 05:04:30,918 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-08-30 05:04:30,918 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:04:30,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-30 05:04:30,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:04:31,037 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:04:31,037 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 05:04:31,037 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:04:31,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2128178274] [2023-08-30 05:04:31,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2128178274] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:04:31,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:04:31,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 05:04:31,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948410238] [2023-08-30 05:04:31,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:04:31,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 05:04:31,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:04:31,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 05:04:31,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 05:04:31,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 781 [2023-08-30 05:04:31,260 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 173 transitions, 3074 flow. Second operand has 6 states, 6 states have (on average 310.5) internal successors, (1863), 6 states have internal predecessors, (1863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:31,261 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:04:31,261 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 781 [2023-08-30 05:04:31,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:04:33,356 INFO L130 PetriNetUnfolder]: 6158/9760 cut-off events. [2023-08-30 05:04:33,356 INFO L131 PetriNetUnfolder]: For 119220/119220 co-relation queries the response was YES. [2023-08-30 05:04:33,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56462 conditions, 9760 events. 6158/9760 cut-off events. For 119220/119220 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 60923 event pairs, 3912 based on Foata normal form. 7/9767 useless extension candidates. Maximal degree in co-relation 56399. Up to 6742 conditions per place. [2023-08-30 05:04:33,433 INFO L137 encePairwiseOnDemand]: 774/781 looper letters, 134 selfloop transitions, 81 changer transitions 21/236 dead transitions. [2023-08-30 05:04:33,434 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 236 transitions, 4113 flow [2023-08-30 05:04:33,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 05:04:33,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 05:04:33,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1910 transitions. [2023-08-30 05:04:33,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4075970977379428 [2023-08-30 05:04:33,436 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1910 transitions. [2023-08-30 05:04:33,436 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1910 transitions. [2023-08-30 05:04:33,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:04:33,436 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1910 transitions. [2023-08-30 05:04:33,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 318.3333333333333) internal successors, (1910), 6 states have internal predecessors, (1910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:33,439 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 781.0) internal successors, (5467), 7 states have internal predecessors, (5467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:33,439 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 781.0) internal successors, (5467), 7 states have internal predecessors, (5467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:33,439 INFO L175 Difference]: Start difference. First operand has 151 places, 173 transitions, 3074 flow. Second operand 6 states and 1910 transitions. [2023-08-30 05:04:33,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 236 transitions, 4113 flow [2023-08-30 05:04:33,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 236 transitions, 3934 flow, removed 37 selfloop flow, removed 3 redundant places. [2023-08-30 05:04:33,763 INFO L231 Difference]: Finished difference. Result has 156 places, 176 transitions, 3303 flow [2023-08-30 05:04:33,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=2909, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3303, PETRI_PLACES=156, PETRI_TRANSITIONS=176} [2023-08-30 05:04:33,763 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 105 predicate places. [2023-08-30 05:04:33,763 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 176 transitions, 3303 flow [2023-08-30 05:04:33,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 310.5) internal successors, (1863), 6 states have internal predecessors, (1863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:33,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:04:33,764 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:04:33,774 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 (41)] Ended with exit code 0 [2023-08-30 05:04:33,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:04:33,974 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:04:33,974 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:04:33,974 INFO L85 PathProgramCache]: Analyzing trace with hash 674202672, now seen corresponding path program 1 times [2023-08-30 05:04:33,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:04:33,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [584610523] [2023-08-30 05:04:33,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:04:33,975 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:04:33,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:04:33,976 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:04:33,976 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 (42)] Waiting until timeout for monitored process [2023-08-30 05:04:34,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:04:34,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 05:04:34,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:04:34,353 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:04:34,354 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 05:04:34,354 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:04:34,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [584610523] [2023-08-30 05:04:34,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [584610523] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:04:34,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:04:34,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 05:04:34,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251065397] [2023-08-30 05:04:34,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:04:34,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 05:04:34,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:04:34,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 05:04:34,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-30 05:04:34,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 781 [2023-08-30 05:04:34,733 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 176 transitions, 3303 flow. Second operand has 7 states, 7 states have (on average 313.14285714285717) internal successors, (2192), 7 states have internal predecessors, (2192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:34,733 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:04:34,733 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 781 [2023-08-30 05:04:34,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:04:37,117 INFO L130 PetriNetUnfolder]: 7029/11106 cut-off events. [2023-08-30 05:04:37,117 INFO L131 PetriNetUnfolder]: For 141069/141069 co-relation queries the response was YES. [2023-08-30 05:04:37,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66963 conditions, 11106 events. 7029/11106 cut-off events. For 141069/141069 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 71413 event pairs, 740 based on Foata normal form. 24/11130 useless extension candidates. Maximal degree in co-relation 66897. Up to 5696 conditions per place. [2023-08-30 05:04:37,221 INFO L137 encePairwiseOnDemand]: 773/781 looper letters, 191 selfloop transitions, 63 changer transitions 1/255 dead transitions. [2023-08-30 05:04:37,221 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 255 transitions, 4402 flow [2023-08-30 05:04:37,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 05:04:37,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 05:04:37,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2252 transitions. [2023-08-30 05:04:37,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41192610206694713 [2023-08-30 05:04:37,224 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2252 transitions. [2023-08-30 05:04:37,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2252 transitions. [2023-08-30 05:04:37,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:04:37,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2252 transitions. [2023-08-30 05:04:37,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 321.7142857142857) internal successors, (2252), 7 states have internal predecessors, (2252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:37,230 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:37,230 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:37,230 INFO L175 Difference]: Start difference. First operand has 156 places, 176 transitions, 3303 flow. Second operand 7 states and 2252 transitions. [2023-08-30 05:04:37,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 255 transitions, 4402 flow [2023-08-30 05:04:37,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 255 transitions, 4269 flow, removed 41 selfloop flow, removed 4 redundant places. [2023-08-30 05:04:37,920 INFO L231 Difference]: Finished difference. Result has 159 places, 189 transitions, 3596 flow [2023-08-30 05:04:37,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=3212, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3596, PETRI_PLACES=159, PETRI_TRANSITIONS=189} [2023-08-30 05:04:37,921 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 108 predicate places. [2023-08-30 05:04:37,921 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 189 transitions, 3596 flow [2023-08-30 05:04:37,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 313.14285714285717) internal successors, (2192), 7 states have internal predecessors, (2192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:37,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:04:37,921 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:04:37,929 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 (42)] Forceful destruction successful, exit code 0 [2023-08-30 05:04:38,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:04:38,122 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:04:38,122 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:04:38,122 INFO L85 PathProgramCache]: Analyzing trace with hash 2080466478, now seen corresponding path program 2 times [2023-08-30 05:04:38,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:04:38,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1306679155] [2023-08-30 05:04:38,123 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 05:04:38,123 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:04:38,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:04:38,124 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:04:38,126 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 (43)] Waiting until timeout for monitored process [2023-08-30 05:04:38,331 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 05:04:38,332 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:04:38,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 05:04:38,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:04:38,502 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:04:38,502 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 05:04:38,502 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:04:38,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1306679155] [2023-08-30 05:04:38,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1306679155] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:04:38,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:04:38,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 05:04:38,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452427007] [2023-08-30 05:04:38,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:04:38,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 05:04:38,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:04:38,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 05:04:38,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 05:04:38,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 312 out of 781 [2023-08-30 05:04:38,836 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 189 transitions, 3596 flow. Second operand has 7 states, 7 states have (on average 315.14285714285717) internal successors, (2206), 7 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:38,837 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:04:38,837 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 312 of 781 [2023-08-30 05:04:38,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:04:41,303 INFO L130 PetriNetUnfolder]: 7072/11223 cut-off events. [2023-08-30 05:04:41,303 INFO L131 PetriNetUnfolder]: For 131390/131390 co-relation queries the response was YES. [2023-08-30 05:04:41,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62770 conditions, 11223 events. 7072/11223 cut-off events. For 131390/131390 co-relation queries the response was YES. Maximal size of possible extension queue 513. Compared 72044 event pairs, 3978 based on Foata normal form. 6/11229 useless extension candidates. Maximal degree in co-relation 62703. Up to 6992 conditions per place. [2023-08-30 05:04:41,385 INFO L137 encePairwiseOnDemand]: 773/781 looper letters, 194 selfloop transitions, 90 changer transitions 8/292 dead transitions. [2023-08-30 05:04:41,385 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 292 transitions, 5413 flow [2023-08-30 05:04:41,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 05:04:41,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 05:04:41,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2267 transitions. [2023-08-30 05:04:41,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41466983720504846 [2023-08-30 05:04:41,388 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2267 transitions. [2023-08-30 05:04:41,388 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2267 transitions. [2023-08-30 05:04:41,388 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:04:41,388 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2267 transitions. [2023-08-30 05:04:41,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 323.85714285714283) internal successors, (2267), 7 states have internal predecessors, (2267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:41,392 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:41,393 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:41,393 INFO L175 Difference]: Start difference. First operand has 159 places, 189 transitions, 3596 flow. Second operand 7 states and 2267 transitions. [2023-08-30 05:04:41,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 292 transitions, 5413 flow [2023-08-30 05:04:41,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 292 transitions, 5315 flow, removed 14 selfloop flow, removed 1 redundant places. [2023-08-30 05:04:41,754 INFO L231 Difference]: Finished difference. Result has 169 places, 215 transitions, 4247 flow [2023-08-30 05:04:41,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=3517, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4247, PETRI_PLACES=169, PETRI_TRANSITIONS=215} [2023-08-30 05:04:41,755 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 118 predicate places. [2023-08-30 05:04:41,755 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 215 transitions, 4247 flow [2023-08-30 05:04:41,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 315.14285714285717) internal successors, (2206), 7 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:41,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:04:41,756 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:04:41,764 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 (43)] Ended with exit code 0 [2023-08-30 05:04:41,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:04:41,956 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:04:41,957 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:04:41,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1491371673, now seen corresponding path program 1 times [2023-08-30 05:04:41,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:04:41,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1542805385] [2023-08-30 05:04:41,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:04:41,957 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:04:41,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:04:41,958 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:04:41,959 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 (44)] Waiting until timeout for monitored process [2023-08-30 05:04:42,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:04:42,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 05:04:42,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:04:42,279 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:04:42,279 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:04:42,482 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:04:42,482 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:04:42,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1542805385] [2023-08-30 05:04:42,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1542805385] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:04:42,484 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 05:04:42,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2023-08-30 05:04:42,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982468541] [2023-08-30 05:04:42,484 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 05:04:42,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 05:04:42,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:04:42,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 05:04:42,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-08-30 05:04:43,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 781 [2023-08-30 05:04:43,108 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 215 transitions, 4247 flow. Second operand has 10 states, 10 states have (on average 311.9) internal successors, (3119), 10 states have internal predecessors, (3119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:43,108 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:04:43,108 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 781 [2023-08-30 05:04:43,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:04:46,190 INFO L130 PetriNetUnfolder]: 8107/12918 cut-off events. [2023-08-30 05:04:46,190 INFO L131 PetriNetUnfolder]: For 148589/148589 co-relation queries the response was YES. [2023-08-30 05:04:46,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74926 conditions, 12918 events. 8107/12918 cut-off events. For 148589/148589 co-relation queries the response was YES. Maximal size of possible extension queue 601. Compared 86033 event pairs, 1990 based on Foata normal form. 30/12948 useless extension candidates. Maximal degree in co-relation 74853. Up to 6392 conditions per place. [2023-08-30 05:04:46,302 INFO L137 encePairwiseOnDemand]: 773/781 looper letters, 229 selfloop transitions, 86 changer transitions 4/319 dead transitions. [2023-08-30 05:04:46,302 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 319 transitions, 6050 flow [2023-08-30 05:04:46,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 05:04:46,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 05:04:46,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2248 transitions. [2023-08-30 05:04:46,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41119443936345346 [2023-08-30 05:04:46,305 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2248 transitions. [2023-08-30 05:04:46,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2248 transitions. [2023-08-30 05:04:46,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:04:46,305 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2248 transitions. [2023-08-30 05:04:46,306 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 321.14285714285717) internal successors, (2248), 7 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:46,308 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:46,309 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:46,309 INFO L175 Difference]: Start difference. First operand has 169 places, 215 transitions, 4247 flow. Second operand 7 states and 2248 transitions. [2023-08-30 05:04:46,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 319 transitions, 6050 flow [2023-08-30 05:04:47,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 319 transitions, 5887 flow, removed 45 selfloop flow, removed 2 redundant places. [2023-08-30 05:04:47,015 INFO L231 Difference]: Finished difference. Result has 176 places, 228 transitions, 4606 flow [2023-08-30 05:04:47,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=4094, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4606, PETRI_PLACES=176, PETRI_TRANSITIONS=228} [2023-08-30 05:04:47,015 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 125 predicate places. [2023-08-30 05:04:47,016 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 228 transitions, 4606 flow [2023-08-30 05:04:47,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 311.9) internal successors, (3119), 10 states have internal predecessors, (3119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:47,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:04:47,016 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:04:47,024 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 (44)] Ended with exit code 0 [2023-08-30 05:04:47,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:04:47,217 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:04:47,217 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:04:47,217 INFO L85 PathProgramCache]: Analyzing trace with hash 405127479, now seen corresponding path program 2 times [2023-08-30 05:04:47,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:04:47,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1366378961] [2023-08-30 05:04:47,218 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 05:04:47,218 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:04:47,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:04:47,219 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:04:47,221 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 (45)] Waiting until timeout for monitored process [2023-08-30 05:04:47,422 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 05:04:47,422 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:04:47,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 05:04:47,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:04:47,534 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:04:47,534 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:04:47,764 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:04:47,764 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:04:47,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1366378961] [2023-08-30 05:04:47,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1366378961] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-30 05:04:47,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 05:04:47,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 10 [2023-08-30 05:04:47,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446389794] [2023-08-30 05:04:47,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:04:47,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 05:04:47,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:04:47,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 05:04:47,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-08-30 05:04:48,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 781 [2023-08-30 05:04:48,363 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 228 transitions, 4606 flow. Second operand has 7 states, 7 states have (on average 317.14285714285717) internal successors, (2220), 7 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:48,363 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:04:48,363 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 781 [2023-08-30 05:04:48,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:04:51,588 INFO L130 PetriNetUnfolder]: 8731/14082 cut-off events. [2023-08-30 05:04:51,588 INFO L131 PetriNetUnfolder]: For 193024/193024 co-relation queries the response was YES. [2023-08-30 05:04:51,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81491 conditions, 14082 events. 8731/14082 cut-off events. For 193024/193024 co-relation queries the response was YES. Maximal size of possible extension queue 677. Compared 96910 event pairs, 4090 based on Foata normal form. 30/14112 useless extension candidates. Maximal degree in co-relation 81415. Up to 7130 conditions per place. [2023-08-30 05:04:51,711 INFO L137 encePairwiseOnDemand]: 773/781 looper letters, 243 selfloop transitions, 69 changer transitions 0/312 dead transitions. [2023-08-30 05:04:51,711 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 312 transitions, 5939 flow [2023-08-30 05:04:51,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 05:04:51,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 05:04:51,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2289 transitions. [2023-08-30 05:04:51,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4186939820742638 [2023-08-30 05:04:51,714 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2289 transitions. [2023-08-30 05:04:51,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2289 transitions. [2023-08-30 05:04:51,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:04:51,715 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2289 transitions. [2023-08-30 05:04:51,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 327.0) internal successors, (2289), 7 states have internal predecessors, (2289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:51,720 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:51,720 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:51,721 INFO L175 Difference]: Start difference. First operand has 176 places, 228 transitions, 4606 flow. Second operand 7 states and 2289 transitions. [2023-08-30 05:04:51,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 312 transitions, 5939 flow [2023-08-30 05:04:52,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 312 transitions, 5808 flow, removed 20 selfloop flow, removed 2 redundant places. [2023-08-30 05:04:52,433 INFO L231 Difference]: Finished difference. Result has 182 places, 230 transitions, 4693 flow [2023-08-30 05:04:52,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=4475, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4693, PETRI_PLACES=182, PETRI_TRANSITIONS=230} [2023-08-30 05:04:52,433 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 131 predicate places. [2023-08-30 05:04:52,433 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 230 transitions, 4693 flow [2023-08-30 05:04:52,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 317.14285714285717) internal successors, (2220), 7 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:52,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:04:52,434 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:04:52,442 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 (45)] Ended with exit code 0 [2023-08-30 05:04:52,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:04:52,634 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:04:52,634 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:04:52,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1490800363, now seen corresponding path program 3 times [2023-08-30 05:04:52,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:04:52,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [67693468] [2023-08-30 05:04:52,635 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 05:04:52,635 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:04:52,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:04:52,636 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:04:52,637 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 (46)] Waiting until timeout for monitored process [2023-08-30 05:04:52,843 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-30 05:04:52,843 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:04:52,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 05:04:52,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:04:53,041 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:04:53,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:04:53,399 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:04:53,399 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:04:53,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [67693468] [2023-08-30 05:04:53,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [67693468] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-30 05:04:53,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 05:04:53,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 11 [2023-08-30 05:04:53,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143744220] [2023-08-30 05:04:53,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:04:53,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 05:04:53,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:04:53,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 05:04:53,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2023-08-30 05:04:54,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 781 [2023-08-30 05:04:54,069 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 230 transitions, 4693 flow. Second operand has 7 states, 7 states have (on average 316.14285714285717) internal successors, (2213), 7 states have internal predecessors, (2213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:54,069 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:04:54,069 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 781 [2023-08-30 05:04:54,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:04:58,237 INFO L130 PetriNetUnfolder]: 10365/16928 cut-off events. [2023-08-30 05:04:58,237 INFO L131 PetriNetUnfolder]: For 232343/232343 co-relation queries the response was YES. [2023-08-30 05:04:58,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98023 conditions, 16928 events. 10365/16928 cut-off events. For 232343/232343 co-relation queries the response was YES. Maximal size of possible extension queue 838. Compared 122900 event pairs, 4820 based on Foata normal form. 30/16958 useless extension candidates. Maximal degree in co-relation 97945. Up to 7286 conditions per place. [2023-08-30 05:04:58,389 INFO L137 encePairwiseOnDemand]: 773/781 looper letters, 262 selfloop transitions, 88 changer transitions 0/350 dead transitions. [2023-08-30 05:04:58,389 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 350 transitions, 6856 flow [2023-08-30 05:04:58,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 05:04:58,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 05:04:58,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2289 transitions. [2023-08-30 05:04:58,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4186939820742638 [2023-08-30 05:04:58,392 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2289 transitions. [2023-08-30 05:04:58,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2289 transitions. [2023-08-30 05:04:58,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:04:58,393 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2289 transitions. [2023-08-30 05:04:58,394 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 327.0) internal successors, (2289), 7 states have internal predecessors, (2289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:58,397 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:58,397 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:58,397 INFO L175 Difference]: Start difference. First operand has 182 places, 230 transitions, 4693 flow. Second operand 7 states and 2289 transitions. [2023-08-30 05:04:58,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 350 transitions, 6856 flow [2023-08-30 05:04:59,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 350 transitions, 6690 flow, removed 7 selfloop flow, removed 4 redundant places. [2023-08-30 05:04:59,314 INFO L231 Difference]: Finished difference. Result has 187 places, 241 transitions, 5010 flow [2023-08-30 05:04:59,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=4545, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5010, PETRI_PLACES=187, PETRI_TRANSITIONS=241} [2023-08-30 05:04:59,315 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 136 predicate places. [2023-08-30 05:04:59,315 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 241 transitions, 5010 flow [2023-08-30 05:04:59,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 316.14285714285717) internal successors, (2213), 7 states have internal predecessors, (2213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:04:59,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:04:59,316 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:04:59,324 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 (46)] Ended with exit code 0 [2023-08-30 05:04:59,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:04:59,517 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:04:59,517 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:04:59,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1563120182, now seen corresponding path program 3 times [2023-08-30 05:04:59,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:04:59,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [978909592] [2023-08-30 05:04:59,517 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 05:04:59,517 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:04:59,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:04:59,518 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:04:59,520 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 (47)] Waiting until timeout for monitored process [2023-08-30 05:04:59,719 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-30 05:04:59,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:04:59,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 05:04:59,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:04:59,860 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:04:59,860 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 05:04:59,860 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:04:59,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [978909592] [2023-08-30 05:04:59,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [978909592] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:04:59,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:04:59,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 05:04:59,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535509264] [2023-08-30 05:04:59,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:04:59,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 05:04:59,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:04:59,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 05:04:59,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-30 05:05:00,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 781 [2023-08-30 05:05:00,232 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 241 transitions, 5010 flow. Second operand has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:00,232 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:05:00,232 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 781 [2023-08-30 05:05:00,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:05:04,202 INFO L130 PetriNetUnfolder]: 10427/17056 cut-off events. [2023-08-30 05:05:04,202 INFO L131 PetriNetUnfolder]: For 244490/244490 co-relation queries the response was YES. [2023-08-30 05:05:04,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99040 conditions, 17056 events. 10427/17056 cut-off events. For 244490/244490 co-relation queries the response was YES. Maximal size of possible extension queue 849. Compared 123742 event pairs, 5112 based on Foata normal form. 24/17080 useless extension candidates. Maximal degree in co-relation 98959. Up to 7576 conditions per place. [2023-08-30 05:05:04,364 INFO L137 encePairwiseOnDemand]: 773/781 looper letters, 230 selfloop transitions, 80 changer transitions 0/310 dead transitions. [2023-08-30 05:05:04,365 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 310 transitions, 6124 flow [2023-08-30 05:05:04,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 05:05:04,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 05:05:04,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2251 transitions. [2023-08-30 05:05:04,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4117431863910737 [2023-08-30 05:05:04,367 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2251 transitions. [2023-08-30 05:05:04,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2251 transitions. [2023-08-30 05:05:04,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:05:04,367 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2251 transitions. [2023-08-30 05:05:04,368 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 321.57142857142856) internal successors, (2251), 7 states have internal predecessors, (2251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:04,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:04,371 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:04,371 INFO L175 Difference]: Start difference. First operand has 187 places, 241 transitions, 5010 flow. Second operand 7 states and 2251 transitions. [2023-08-30 05:05:04,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 310 transitions, 6124 flow [2023-08-30 05:05:05,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 310 transitions, 5896 flow, removed 31 selfloop flow, removed 3 redundant places. [2023-08-30 05:05:05,298 INFO L231 Difference]: Finished difference. Result has 193 places, 245 transitions, 5094 flow [2023-08-30 05:05:05,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=4784, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5094, PETRI_PLACES=193, PETRI_TRANSITIONS=245} [2023-08-30 05:05:05,298 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 142 predicate places. [2023-08-30 05:05:05,299 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 245 transitions, 5094 flow [2023-08-30 05:05:05,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:05,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:05:05,299 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:05:05,308 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 (47)] Forceful destruction successful, exit code 0 [2023-08-30 05:05:05,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:05:05,500 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:05:05,500 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:05:05,500 INFO L85 PathProgramCache]: Analyzing trace with hash -994494395, now seen corresponding path program 4 times [2023-08-30 05:05:05,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:05:05,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [386114866] [2023-08-30 05:05:05,501 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 05:05:05,501 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:05:05,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:05:05,501 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:05:05,502 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 (48)] Waiting until timeout for monitored process [2023-08-30 05:05:05,670 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 05:05:05,670 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:05:05,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 05:05:05,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:05:05,815 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:05:05,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:05:06,146 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:05:06,146 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:05:06,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [386114866] [2023-08-30 05:05:06,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [386114866] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-30 05:05:06,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 05:05:06,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 11 [2023-08-30 05:05:06,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18364872] [2023-08-30 05:05:06,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:05:06,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 05:05:06,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:05:06,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 05:05:06,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-08-30 05:05:06,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 781 [2023-08-30 05:05:06,791 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 245 transitions, 5094 flow. Second operand has 7 states, 7 states have (on average 317.14285714285717) internal successors, (2220), 7 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:06,791 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:05:06,791 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 781 [2023-08-30 05:05:06,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:05:11,012 INFO L130 PetriNetUnfolder]: 10513/17228 cut-off events. [2023-08-30 05:05:11,013 INFO L131 PetriNetUnfolder]: For 247812/247812 co-relation queries the response was YES. [2023-08-30 05:05:11,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99805 conditions, 17228 events. 10513/17228 cut-off events. For 247812/247812 co-relation queries the response was YES. Maximal size of possible extension queue 869. Compared 125641 event pairs, 4904 based on Foata normal form. 30/17258 useless extension candidates. Maximal degree in co-relation 99721. Up to 7286 conditions per place. [2023-08-30 05:05:11,163 INFO L137 encePairwiseOnDemand]: 773/781 looper letters, 247 selfloop transitions, 77 changer transitions 0/324 dead transitions. [2023-08-30 05:05:11,163 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 324 transitions, 6353 flow [2023-08-30 05:05:11,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 05:05:11,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 05:05:11,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2286 transitions. [2023-08-30 05:05:11,166 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41814523504664347 [2023-08-30 05:05:11,166 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2286 transitions. [2023-08-30 05:05:11,166 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2286 transitions. [2023-08-30 05:05:11,166 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:05:11,166 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2286 transitions. [2023-08-30 05:05:11,168 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 326.57142857142856) internal successors, (2286), 7 states have internal predecessors, (2286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:11,170 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:11,170 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:11,170 INFO L175 Difference]: Start difference. First operand has 193 places, 245 transitions, 5094 flow. Second operand 7 states and 2286 transitions. [2023-08-30 05:05:11,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 324 transitions, 6353 flow [2023-08-30 05:05:12,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 324 transitions, 6211 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-08-30 05:05:12,158 INFO L231 Difference]: Finished difference. Result has 198 places, 249 transitions, 5199 flow [2023-08-30 05:05:12,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=4952, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5199, PETRI_PLACES=198, PETRI_TRANSITIONS=249} [2023-08-30 05:05:12,158 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 147 predicate places. [2023-08-30 05:05:12,159 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 249 transitions, 5199 flow [2023-08-30 05:05:12,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 317.14285714285717) internal successors, (2220), 7 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:12,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:05:12,159 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:05:12,167 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 (48)] Ended with exit code 0 [2023-08-30 05:05:12,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:05:12,360 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:05:12,360 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:05:12,360 INFO L85 PathProgramCache]: Analyzing trace with hash 587823331, now seen corresponding path program 5 times [2023-08-30 05:05:12,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:05:12,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [468973998] [2023-08-30 05:05:12,361 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 05:05:12,361 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:05:12,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:05:12,362 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:05:12,365 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 (49)] Waiting until timeout for monitored process [2023-08-30 05:05:12,543 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-30 05:05:12,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:05:12,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 05:05:12,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:05:12,659 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:05:12,659 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 05:05:12,659 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:05:12,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [468973998] [2023-08-30 05:05:12,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [468973998] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:05:12,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:05:12,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 05:05:12,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595127185] [2023-08-30 05:05:12,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:05:12,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 05:05:12,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:05:12,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 05:05:12,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-30 05:05:12,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 781 [2023-08-30 05:05:12,972 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 249 transitions, 5199 flow. Second operand has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:12,973 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:05:12,973 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 781 [2023-08-30 05:05:12,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:05:17,206 INFO L130 PetriNetUnfolder]: 10495/17174 cut-off events. [2023-08-30 05:05:17,206 INFO L131 PetriNetUnfolder]: For 251925/251925 co-relation queries the response was YES. [2023-08-30 05:05:17,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101145 conditions, 17174 events. 10495/17174 cut-off events. For 251925/251925 co-relation queries the response was YES. Maximal size of possible extension queue 865. Compared 124965 event pairs, 5134 based on Foata normal form. 4/17178 useless extension candidates. Maximal degree in co-relation 101059. Up to 7694 conditions per place. [2023-08-30 05:05:17,405 INFO L137 encePairwiseOnDemand]: 773/781 looper letters, 223 selfloop transitions, 79 changer transitions 4/306 dead transitions. [2023-08-30 05:05:17,405 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 306 transitions, 6136 flow [2023-08-30 05:05:17,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 05:05:17,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 05:05:17,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2244 transitions. [2023-08-30 05:05:17,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4104627766599598 [2023-08-30 05:05:17,408 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2244 transitions. [2023-08-30 05:05:17,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2244 transitions. [2023-08-30 05:05:17,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:05:17,408 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2244 transitions. [2023-08-30 05:05:17,410 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 320.57142857142856) internal successors, (2244), 7 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:17,412 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:17,413 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:17,413 INFO L175 Difference]: Start difference. First operand has 198 places, 249 transitions, 5199 flow. Second operand 7 states and 2244 transitions. [2023-08-30 05:05:17,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 306 transitions, 6136 flow [2023-08-30 05:05:18,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 306 transitions, 6030 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-08-30 05:05:18,602 INFO L231 Difference]: Finished difference. Result has 203 places, 248 transitions, 5230 flow [2023-08-30 05:05:18,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=5066, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5230, PETRI_PLACES=203, PETRI_TRANSITIONS=248} [2023-08-30 05:05:18,603 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 152 predicate places. [2023-08-30 05:05:18,603 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 248 transitions, 5230 flow [2023-08-30 05:05:18,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:18,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:05:18,603 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:05:18,613 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 (49)] Forceful destruction successful, exit code 0 [2023-08-30 05:05:18,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:05:18,809 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:05:18,810 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:05:18,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1869999354, now seen corresponding path program 4 times [2023-08-30 05:05:18,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:05:18,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [723013456] [2023-08-30 05:05:18,810 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 05:05:18,810 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:05:18,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:05:18,811 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:05:18,814 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 (50)] Waiting until timeout for monitored process [2023-08-30 05:05:18,989 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 05:05:18,989 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:05:18,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 05:05:18,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:05:19,114 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:05:19,114 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 05:05:19,114 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:05:19,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [723013456] [2023-08-30 05:05:19,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [723013456] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:05:19,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:05:19,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 05:05:19,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239865531] [2023-08-30 05:05:19,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:05:19,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 05:05:19,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:05:19,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 05:05:19,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-30 05:05:19,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 781 [2023-08-30 05:05:19,474 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 248 transitions, 5230 flow. Second operand has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:19,474 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:05:19,474 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 781 [2023-08-30 05:05:19,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:05:23,686 INFO L130 PetriNetUnfolder]: 10462/17095 cut-off events. [2023-08-30 05:05:23,686 INFO L131 PetriNetUnfolder]: For 250089/250089 co-relation queries the response was YES. [2023-08-30 05:05:23,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101418 conditions, 17095 events. 10462/17095 cut-off events. For 250089/250089 co-relation queries the response was YES. Maximal size of possible extension queue 856. Compared 123832 event pairs, 5124 based on Foata normal form. 6/17101 useless extension candidates. Maximal degree in co-relation 101331. Up to 7694 conditions per place. [2023-08-30 05:05:23,885 INFO L137 encePairwiseOnDemand]: 773/781 looper letters, 220 selfloop transitions, 78 changer transitions 6/304 dead transitions. [2023-08-30 05:05:23,885 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 304 transitions, 6125 flow [2023-08-30 05:05:23,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 05:05:23,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 05:05:23,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2243 transitions. [2023-08-30 05:05:23,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4102798609840863 [2023-08-30 05:05:23,889 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2243 transitions. [2023-08-30 05:05:23,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2243 transitions. [2023-08-30 05:05:23,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:05:23,890 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2243 transitions. [2023-08-30 05:05:23,891 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 320.42857142857144) internal successors, (2243), 7 states have internal predecessors, (2243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:23,894 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:23,895 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:23,895 INFO L175 Difference]: Start difference. First operand has 203 places, 248 transitions, 5230 flow. Second operand 7 states and 2243 transitions. [2023-08-30 05:05:23,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 304 transitions, 6125 flow [2023-08-30 05:05:24,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 304 transitions, 5926 flow, removed 7 selfloop flow, removed 6 redundant places. [2023-08-30 05:05:24,916 INFO L231 Difference]: Finished difference. Result has 202 places, 246 transitions, 5134 flow [2023-08-30 05:05:24,916 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=4992, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5134, PETRI_PLACES=202, PETRI_TRANSITIONS=246} [2023-08-30 05:05:24,916 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 151 predicate places. [2023-08-30 05:05:24,916 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 246 transitions, 5134 flow [2023-08-30 05:05:24,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:24,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:05:24,917 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:05:24,925 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 (50)] Forceful destruction successful, exit code 0 [2023-08-30 05:05:25,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:05:25,118 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:05:25,118 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:05:25,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1440117096, now seen corresponding path program 5 times [2023-08-30 05:05:25,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:05:25,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1477863265] [2023-08-30 05:05:25,119 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 05:05:25,119 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:05:25,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:05:25,120 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:05:25,121 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 (51)] Waiting until timeout for monitored process [2023-08-30 05:05:25,314 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-30 05:05:25,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:05:25,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 05:05:25,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:05:25,432 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:05:25,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:05:25,642 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:05:25,642 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:05:25,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1477863265] [2023-08-30 05:05:25,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1477863265] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-30 05:05:25,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 05:05:25,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 10 [2023-08-30 05:05:25,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46191342] [2023-08-30 05:05:25,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:05:25,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 05:05:25,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:05:25,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 05:05:25,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-08-30 05:05:26,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 781 [2023-08-30 05:05:26,279 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 246 transitions, 5134 flow. Second operand has 7 states, 7 states have (on average 316.14285714285717) internal successors, (2213), 7 states have internal predecessors, (2213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:26,279 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:05:26,279 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 781 [2023-08-30 05:05:26,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:05:31,488 INFO L130 PetriNetUnfolder]: 12785/20900 cut-off events. [2023-08-30 05:05:31,488 INFO L131 PetriNetUnfolder]: For 257018/257018 co-relation queries the response was YES. [2023-08-30 05:05:31,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119578 conditions, 20900 events. 12785/20900 cut-off events. For 257018/257018 co-relation queries the response was YES. Maximal size of possible extension queue 1049. Compared 156877 event pairs, 2257 based on Foata normal form. 24/20924 useless extension candidates. Maximal degree in co-relation 119491. Up to 9992 conditions per place. [2023-08-30 05:05:31,706 INFO L137 encePairwiseOnDemand]: 773/781 looper letters, 254 selfloop transitions, 79 changer transitions 2/335 dead transitions. [2023-08-30 05:05:31,707 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 335 transitions, 6705 flow [2023-08-30 05:05:31,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 05:05:31,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 05:05:31,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2268 transitions. [2023-08-30 05:05:31,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4148527528809219 [2023-08-30 05:05:31,709 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2268 transitions. [2023-08-30 05:05:31,709 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2268 transitions. [2023-08-30 05:05:31,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:05:31,709 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2268 transitions. [2023-08-30 05:05:31,711 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 324.0) internal successors, (2268), 7 states have internal predecessors, (2268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:31,713 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:31,714 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:31,714 INFO L175 Difference]: Start difference. First operand has 202 places, 246 transitions, 5134 flow. Second operand 7 states and 2268 transitions. [2023-08-30 05:05:31,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 335 transitions, 6705 flow [2023-08-30 05:05:33,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 335 transitions, 6495 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-08-30 05:05:33,297 INFO L231 Difference]: Finished difference. Result has 206 places, 261 transitions, 5496 flow [2023-08-30 05:05:33,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=4976, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5496, PETRI_PLACES=206, PETRI_TRANSITIONS=261} [2023-08-30 05:05:33,297 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 155 predicate places. [2023-08-30 05:05:33,298 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 261 transitions, 5496 flow [2023-08-30 05:05:33,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 316.14285714285717) internal successors, (2213), 7 states have internal predecessors, (2213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:33,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:05:33,298 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:05:33,306 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 (51)] Forceful destruction successful, exit code 0 [2023-08-30 05:05:33,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:05:33,499 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:05:33,500 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:05:33,500 INFO L85 PathProgramCache]: Analyzing trace with hash 838455036, now seen corresponding path program 6 times [2023-08-30 05:05:33,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:05:33,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1432480225] [2023-08-30 05:05:33,500 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 05:05:33,500 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:05:33,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:05:33,501 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:05:33,502 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 (52)] Waiting until timeout for monitored process [2023-08-30 05:05:33,755 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-30 05:05:33,755 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:05:33,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 05:05:33,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:05:33,866 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:05:33,866 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:05:34,127 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:05:34,127 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:05:34,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1432480225] [2023-08-30 05:05:34,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1432480225] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-30 05:05:34,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 05:05:34,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 10 [2023-08-30 05:05:34,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163690010] [2023-08-30 05:05:34,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:05:34,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 05:05:34,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:05:34,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 05:05:34,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-08-30 05:05:34,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 781 [2023-08-30 05:05:34,819 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 261 transitions, 5496 flow. Second operand has 7 states, 7 states have (on average 317.14285714285717) internal successors, (2220), 7 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:34,819 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:05:34,819 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 781 [2023-08-30 05:05:34,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:05:40,931 INFO L130 PetriNetUnfolder]: 14313/23706 cut-off events. [2023-08-30 05:05:40,932 INFO L131 PetriNetUnfolder]: For 309674/309674 co-relation queries the response was YES. [2023-08-30 05:05:41,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132778 conditions, 23706 events. 14313/23706 cut-off events. For 309674/309674 co-relation queries the response was YES. Maximal size of possible extension queue 1219. Compared 185446 event pairs, 4870 based on Foata normal form. 24/23730 useless extension candidates. Maximal degree in co-relation 132687. Up to 9894 conditions per place. [2023-08-30 05:05:41,253 INFO L137 encePairwiseOnDemand]: 773/781 looper letters, 239 selfloop transitions, 97 changer transitions 0/336 dead transitions. [2023-08-30 05:05:41,253 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 336 transitions, 6722 flow [2023-08-30 05:05:41,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 05:05:41,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 05:05:41,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2283 transitions. [2023-08-30 05:05:41,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4175964880190232 [2023-08-30 05:05:41,256 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2283 transitions. [2023-08-30 05:05:41,256 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2283 transitions. [2023-08-30 05:05:41,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:05:41,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2283 transitions. [2023-08-30 05:05:41,258 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 326.14285714285717) internal successors, (2283), 7 states have internal predecessors, (2283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:41,260 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:41,260 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:41,260 INFO L175 Difference]: Start difference. First operand has 206 places, 261 transitions, 5496 flow. Second operand 7 states and 2283 transitions. [2023-08-30 05:05:41,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 336 transitions, 6722 flow [2023-08-30 05:05:43,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 336 transitions, 6604 flow, removed 21 selfloop flow, removed 2 redundant places. [2023-08-30 05:05:43,253 INFO L231 Difference]: Finished difference. Result has 212 places, 263 transitions, 5650 flow [2023-08-30 05:05:43,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=5378, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5650, PETRI_PLACES=212, PETRI_TRANSITIONS=263} [2023-08-30 05:05:43,253 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 161 predicate places. [2023-08-30 05:05:43,254 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 263 transitions, 5650 flow [2023-08-30 05:05:43,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 317.14285714285717) internal successors, (2220), 7 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:43,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:05:43,254 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:05:43,263 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 (52)] Ended with exit code 0 [2023-08-30 05:05:43,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:05:43,455 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:05:43,455 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:05:43,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1141561250, now seen corresponding path program 7 times [2023-08-30 05:05:43,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:05:43,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [27429673] [2023-08-30 05:05:43,456 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-30 05:05:43,456 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:05:43,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:05:43,457 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:05:43,458 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 (53)] Waiting until timeout for monitored process [2023-08-30 05:05:43,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:05:43,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 05:05:43,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:05:43,836 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:05:43,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:05:44,202 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:05:44,203 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:05:44,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [27429673] [2023-08-30 05:05:44,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [27429673] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-30 05:05:44,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 05:05:44,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 11 [2023-08-30 05:05:44,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237820723] [2023-08-30 05:05:44,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:05:44,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 05:05:44,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:05:44,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 05:05:44,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2023-08-30 05:05:45,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 781 [2023-08-30 05:05:45,169 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 263 transitions, 5650 flow. Second operand has 7 states, 7 states have (on average 316.14285714285717) internal successors, (2213), 7 states have internal predecessors, (2213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:45,169 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:05:45,169 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 781 [2023-08-30 05:05:45,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:05:53,198 INFO L130 PetriNetUnfolder]: 18381/30672 cut-off events. [2023-08-30 05:05:53,198 INFO L131 PetriNetUnfolder]: For 365214/365214 co-relation queries the response was YES. [2023-08-30 05:05:53,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167290 conditions, 30672 events. 18381/30672 cut-off events. For 365214/365214 co-relation queries the response was YES. Maximal size of possible extension queue 1633. Compared 252872 event pairs, 6866 based on Foata normal form. 24/30696 useless extension candidates. Maximal degree in co-relation 167197. Up to 10619 conditions per place. [2023-08-30 05:05:53,870 INFO L137 encePairwiseOnDemand]: 773/781 looper letters, 265 selfloop transitions, 97 changer transitions 0/362 dead transitions. [2023-08-30 05:05:53,870 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 362 transitions, 7356 flow [2023-08-30 05:05:53,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 05:05:53,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 05:05:53,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2281 transitions. [2023-08-30 05:05:53,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4172306566672764 [2023-08-30 05:05:53,873 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2281 transitions. [2023-08-30 05:05:53,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2281 transitions. [2023-08-30 05:05:53,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:05:53,873 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2281 transitions. [2023-08-30 05:05:53,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 325.85714285714283) internal successors, (2281), 7 states have internal predecessors, (2281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:54,046 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:54,046 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:54,046 INFO L175 Difference]: Start difference. First operand has 212 places, 263 transitions, 5650 flow. Second operand 7 states and 2281 transitions. [2023-08-30 05:05:54,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 362 transitions, 7356 flow [2023-08-30 05:05:56,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 362 transitions, 7140 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-08-30 05:05:56,252 INFO L231 Difference]: Finished difference. Result has 217 places, 275 transitions, 5936 flow [2023-08-30 05:05:56,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=5454, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5936, PETRI_PLACES=217, PETRI_TRANSITIONS=275} [2023-08-30 05:05:56,253 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 166 predicate places. [2023-08-30 05:05:56,253 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 275 transitions, 5936 flow [2023-08-30 05:05:56,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 316.14285714285717) internal successors, (2213), 7 states have internal predecessors, (2213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:56,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:05:56,254 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:05:56,265 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (53)] Forceful destruction successful, exit code 0 [2023-08-30 05:05:56,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:05:56,465 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:05:56,466 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:05:56,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1730321531, now seen corresponding path program 6 times [2023-08-30 05:05:56,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:05:56,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [972977799] [2023-08-30 05:05:56,466 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 05:05:56,466 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:05:56,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:05:56,467 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:05:56,468 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 (54)] Waiting until timeout for monitored process [2023-08-30 05:05:56,772 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-30 05:05:56,772 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:05:56,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 05:05:56,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:05:56,911 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:05:56,911 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 05:05:56,911 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:05:56,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [972977799] [2023-08-30 05:05:56,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [972977799] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:05:56,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:05:56,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 05:05:56,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885382108] [2023-08-30 05:05:56,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:05:56,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 05:05:56,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:05:56,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 05:05:56,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-30 05:05:57,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 781 [2023-08-30 05:05:57,386 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 275 transitions, 5936 flow. Second operand has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:57,386 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:05:57,386 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 781 [2023-08-30 05:05:57,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:06:05,013 INFO L130 PetriNetUnfolder]: 18337/30592 cut-off events. [2023-08-30 05:06:05,013 INFO L131 PetriNetUnfolder]: For 382343/382343 co-relation queries the response was YES. [2023-08-30 05:06:05,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167245 conditions, 30592 events. 18337/30592 cut-off events. For 382343/382343 co-relation queries the response was YES. Maximal size of possible extension queue 1623. Compared 251737 event pairs, 7128 based on Foata normal form. 30/30622 useless extension candidates. Maximal degree in co-relation 167149. Up to 19038 conditions per place. [2023-08-30 05:06:05,615 INFO L137 encePairwiseOnDemand]: 773/781 looper letters, 229 selfloop transitions, 108 changer transitions 0/337 dead transitions. [2023-08-30 05:06:05,615 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 337 transitions, 7005 flow [2023-08-30 05:06:05,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 05:06:05,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 05:06:05,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2246 transitions. [2023-08-30 05:06:05,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4108286080117066 [2023-08-30 05:06:05,618 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2246 transitions. [2023-08-30 05:06:05,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2246 transitions. [2023-08-30 05:06:05,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:06:05,618 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2246 transitions. [2023-08-30 05:06:05,619 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 320.85714285714283) internal successors, (2246), 7 states have internal predecessors, (2246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:06:05,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:06:05,786 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:06:05,786 INFO L175 Difference]: Start difference. First operand has 217 places, 275 transitions, 5936 flow. Second operand 7 states and 2246 transitions. [2023-08-30 05:06:05,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 337 transitions, 7005 flow [2023-08-30 05:06:08,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 337 transitions, 6841 flow, removed 30 selfloop flow, removed 2 redundant places. [2023-08-30 05:06:08,201 INFO L231 Difference]: Finished difference. Result has 222 places, 276 transitions, 6035 flow [2023-08-30 05:06:08,201 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=5773, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6035, PETRI_PLACES=222, PETRI_TRANSITIONS=276} [2023-08-30 05:06:08,202 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 171 predicate places. [2023-08-30 05:06:08,202 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 276 transitions, 6035 flow [2023-08-30 05:06:08,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:06:08,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:06:08,203 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:06:08,213 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 (54)] Forceful destruction successful, exit code 0 [2023-08-30 05:06:08,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:06:08,409 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:06:08,409 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:06:08,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1467737416, now seen corresponding path program 8 times [2023-08-30 05:06:08,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:06:08,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [416180851] [2023-08-30 05:06:08,410 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 05:06:08,410 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:06:08,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:06:08,411 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:06:08,411 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 (55)] Waiting until timeout for monitored process [2023-08-30 05:06:08,627 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 05:06:08,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:06:08,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 05:06:08,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:06:08,773 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:06:08,773 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 05:06:08,774 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:06:08,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [416180851] [2023-08-30 05:06:08,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [416180851] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:06:08,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:06:08,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 05:06:08,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644314841] [2023-08-30 05:06:08,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:06:08,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 05:06:08,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:06:08,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 05:06:08,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-30 05:06:09,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 781 [2023-08-30 05:06:09,144 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 276 transitions, 6035 flow. Second operand has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:06:09,144 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:06:09,144 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 781 [2023-08-30 05:06:09,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:06:16,641 INFO L130 PetriNetUnfolder]: 18313/30568 cut-off events. [2023-08-30 05:06:16,641 INFO L131 PetriNetUnfolder]: For 380764/380764 co-relation queries the response was YES. [2023-08-30 05:06:17,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167114 conditions, 30568 events. 18313/30568 cut-off events. For 380764/380764 co-relation queries the response was YES. Maximal size of possible extension queue 1627. Compared 251852 event pairs, 7074 based on Foata normal form. 24/30592 useless extension candidates. Maximal degree in co-relation 167017. Up to 18900 conditions per place. [2023-08-30 05:06:17,306 INFO L137 encePairwiseOnDemand]: 773/781 looper letters, 231 selfloop transitions, 109 changer transitions 0/340 dead transitions. [2023-08-30 05:06:17,306 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 340 transitions, 7101 flow [2023-08-30 05:06:17,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 05:06:17,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 05:06:17,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2248 transitions. [2023-08-30 05:06:17,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41119443936345346 [2023-08-30 05:06:17,308 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2248 transitions. [2023-08-30 05:06:17,308 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2248 transitions. [2023-08-30 05:06:17,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:06:17,308 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2248 transitions. [2023-08-30 05:06:17,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 321.14285714285717) internal successors, (2248), 7 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:06:17,312 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:06:17,312 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:06:17,312 INFO L175 Difference]: Start difference. First operand has 222 places, 276 transitions, 6035 flow. Second operand 7 states and 2248 transitions. [2023-08-30 05:06:17,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 340 transitions, 7101 flow [2023-08-30 05:06:19,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 340 transitions, 6953 flow, removed 7 selfloop flow, removed 4 redundant places. [2023-08-30 05:06:19,682 INFO L231 Difference]: Finished difference. Result has 225 places, 277 transitions, 6137 flow [2023-08-30 05:06:19,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=5887, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6137, PETRI_PLACES=225, PETRI_TRANSITIONS=277} [2023-08-30 05:06:19,683 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 174 predicate places. [2023-08-30 05:06:19,683 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 277 transitions, 6137 flow [2023-08-30 05:06:19,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:06:19,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:06:19,683 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:06:19,692 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 (55)] Forceful destruction successful, exit code 0 [2023-08-30 05:06:19,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:06:19,884 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:06:19,884 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:06:19,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1890379816, now seen corresponding path program 9 times [2023-08-30 05:06:19,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:06:19,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [214018528] [2023-08-30 05:06:19,885 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 05:06:19,885 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:06:19,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:06:19,886 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:06:19,887 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 (56)] Waiting until timeout for monitored process [2023-08-30 05:06:20,110 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-30 05:06:20,110 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:06:20,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 05:06:20,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:06:20,231 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:06:20,231 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 05:06:20,231 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:06:20,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [214018528] [2023-08-30 05:06:20,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [214018528] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:06:20,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:06:20,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 05:06:20,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239744630] [2023-08-30 05:06:20,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:06:20,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 05:06:20,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:06:20,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 05:06:20,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-30 05:06:20,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 781 [2023-08-30 05:06:20,550 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 277 transitions, 6137 flow. Second operand has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:06:20,550 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:06:20,550 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 781 [2023-08-30 05:06:20,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:06:28,152 INFO L130 PetriNetUnfolder]: 18283/30496 cut-off events. [2023-08-30 05:06:28,152 INFO L131 PetriNetUnfolder]: For 395272/395272 co-relation queries the response was YES. [2023-08-30 05:06:28,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166981 conditions, 30496 events. 18283/30496 cut-off events. For 395272/395272 co-relation queries the response was YES. Maximal size of possible extension queue 1617. Compared 250751 event pairs, 7086 based on Foata normal form. 6/30502 useless extension candidates. Maximal degree in co-relation 166883. Up to 18942 conditions per place. [2023-08-30 05:06:28,788 INFO L137 encePairwiseOnDemand]: 773/781 looper letters, 219 selfloop transitions, 107 changer transitions 6/332 dead transitions. [2023-08-30 05:06:28,788 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 332 transitions, 7097 flow [2023-08-30 05:06:28,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 05:06:28,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 05:06:28,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2241 transitions. [2023-08-30 05:06:28,790 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40991402963233947 [2023-08-30 05:06:28,790 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2241 transitions. [2023-08-30 05:06:28,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2241 transitions. [2023-08-30 05:06:28,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:06:28,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2241 transitions. [2023-08-30 05:06:28,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 320.14285714285717) internal successors, (2241), 7 states have internal predecessors, (2241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:06:28,794 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:06:28,795 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:06:28,795 INFO L175 Difference]: Start difference. First operand has 225 places, 277 transitions, 6137 flow. Second operand 7 states and 2241 transitions. [2023-08-30 05:06:28,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 332 transitions, 7097 flow [2023-08-30 05:06:31,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 332 transitions, 6879 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-08-30 05:06:31,152 INFO L231 Difference]: Finished difference. Result has 227 places, 276 transitions, 6103 flow [2023-08-30 05:06:31,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=5884, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6103, PETRI_PLACES=227, PETRI_TRANSITIONS=276} [2023-08-30 05:06:31,152 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 176 predicate places. [2023-08-30 05:06:31,152 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 276 transitions, 6103 flow [2023-08-30 05:06:31,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:06:31,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:06:31,153 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:06:31,161 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 (56)] Forceful destruction successful, exit code 0 [2023-08-30 05:06:31,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:06:31,354 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:06:31,354 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:06:31,354 INFO L85 PathProgramCache]: Analyzing trace with hash -993453291, now seen corresponding path program 7 times [2023-08-30 05:06:31,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:06:31,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1856414641] [2023-08-30 05:06:31,355 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-30 05:06:31,355 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:06:31,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:06:31,356 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:06:31,356 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 (57)] Waiting until timeout for monitored process [2023-08-30 05:06:31,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:06:31,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 05:06:31,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:06:31,907 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:06:31,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:06:32,440 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:06:32,441 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:06:32,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1856414641] [2023-08-30 05:06:32,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1856414641] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:06:32,441 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 05:06:32,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-08-30 05:06:32,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550153841] [2023-08-30 05:06:32,442 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 05:06:32,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 05:06:32,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:06:32,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 05:06:32,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-08-30 05:06:33,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 781 [2023-08-30 05:06:33,366 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 276 transitions, 6103 flow. Second operand has 12 states, 12 states have (on average 308.4166666666667) internal successors, (3701), 12 states have internal predecessors, (3701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:06:33,366 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:06:33,366 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 781 [2023-08-30 05:06:33,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:06:41,507 INFO L130 PetriNetUnfolder]: 18524/30887 cut-off events. [2023-08-30 05:06:41,507 INFO L131 PetriNetUnfolder]: For 418329/418329 co-relation queries the response was YES. [2023-08-30 05:06:42,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170312 conditions, 30887 events. 18524/30887 cut-off events. For 418329/418329 co-relation queries the response was YES. Maximal size of possible extension queue 1638. Compared 254919 event pairs, 7992 based on Foata normal form. 12/30899 useless extension candidates. Maximal degree in co-relation 170213. Up to 10083 conditions per place. [2023-08-30 05:06:42,130 INFO L137 encePairwiseOnDemand]: 773/781 looper letters, 264 selfloop transitions, 117 changer transitions 0/381 dead transitions. [2023-08-30 05:06:42,130 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 381 transitions, 8176 flow [2023-08-30 05:06:42,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 05:06:42,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 05:06:42,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2239 transitions. [2023-08-30 05:06:42,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40954819828059263 [2023-08-30 05:06:42,133 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2239 transitions. [2023-08-30 05:06:42,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2239 transitions. [2023-08-30 05:06:42,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:06:42,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2239 transitions. [2023-08-30 05:06:42,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 319.85714285714283) internal successors, (2239), 7 states have internal predecessors, (2239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:06:42,139 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:06:42,139 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:06:42,139 INFO L175 Difference]: Start difference. First operand has 227 places, 276 transitions, 6103 flow. Second operand 7 states and 2239 transitions. [2023-08-30 05:06:42,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 381 transitions, 8176 flow [2023-08-30 05:06:44,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 381 transitions, 7934 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-08-30 05:06:44,373 INFO L231 Difference]: Finished difference. Result has 230 places, 286 transitions, 6476 flow [2023-08-30 05:06:44,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=5879, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6476, PETRI_PLACES=230, PETRI_TRANSITIONS=286} [2023-08-30 05:06:44,374 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 179 predicate places. [2023-08-30 05:06:44,374 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 286 transitions, 6476 flow [2023-08-30 05:06:44,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 308.4166666666667) internal successors, (3701), 12 states have internal predecessors, (3701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:06:44,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:06:44,375 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:06:44,384 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 (57)] Forceful destruction successful, exit code 0 [2023-08-30 05:06:44,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:06:44,576 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:06:44,576 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:06:44,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1990034639, now seen corresponding path program 8 times [2023-08-30 05:06:44,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:06:44,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1902665969] [2023-08-30 05:06:44,577 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 05:06:44,577 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:06:44,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:06:44,578 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:06:44,578 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 (58)] Waiting until timeout for monitored process [2023-08-30 05:06:44,829 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 05:06:44,829 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:06:44,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 05:06:44,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:06:45,066 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:06:45,066 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:06:45,610 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:06:45,610 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:06:45,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1902665969] [2023-08-30 05:06:45,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1902665969] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-30 05:06:45,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 05:06:45,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2023-08-30 05:06:45,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646090021] [2023-08-30 05:06:45,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:06:45,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 05:06:45,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:06:45,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 05:06:45,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-08-30 05:06:46,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 781 [2023-08-30 05:06:46,588 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 286 transitions, 6476 flow. Second operand has 7 states, 7 states have (on average 316.14285714285717) internal successors, (2213), 7 states have internal predecessors, (2213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:06:46,588 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:06:46,588 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 781 [2023-08-30 05:06:46,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:06:55,038 INFO L130 PetriNetUnfolder]: 18480/30807 cut-off events. [2023-08-30 05:06:55,039 INFO L131 PetriNetUnfolder]: For 424393/424393 co-relation queries the response was YES. [2023-08-30 05:06:55,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170129 conditions, 30807 events. 18480/30807 cut-off events. For 424393/424393 co-relation queries the response was YES. Maximal size of possible extension queue 1633. Compared 254033 event pairs, 7966 based on Foata normal form. 30/30837 useless extension candidates. Maximal degree in co-relation 170027. Up to 10083 conditions per place. [2023-08-30 05:06:55,673 INFO L137 encePairwiseOnDemand]: 773/781 looper letters, 265 selfloop transitions, 115 changer transitions 0/380 dead transitions. [2023-08-30 05:06:55,673 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 380 transitions, 8237 flow [2023-08-30 05:06:55,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 05:06:55,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 05:06:55,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2288 transitions. [2023-08-30 05:06:55,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41851106639839036 [2023-08-30 05:06:55,675 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2288 transitions. [2023-08-30 05:06:55,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2288 transitions. [2023-08-30 05:06:55,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:06:55,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2288 transitions. [2023-08-30 05:06:55,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 326.85714285714283) internal successors, (2288), 7 states have internal predecessors, (2288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:06:55,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:06:55,679 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:06:55,679 INFO L175 Difference]: Start difference. First operand has 230 places, 286 transitions, 6476 flow. Second operand 7 states and 2288 transitions. [2023-08-30 05:06:55,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 380 transitions, 8237 flow [2023-08-30 05:06:58,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 380 transitions, 8011 flow, removed 31 selfloop flow, removed 3 redundant places. [2023-08-30 05:06:58,077 INFO L231 Difference]: Finished difference. Result has 234 places, 286 transitions, 6489 flow [2023-08-30 05:06:58,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=6225, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6489, PETRI_PLACES=234, PETRI_TRANSITIONS=286} [2023-08-30 05:06:58,078 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 183 predicate places. [2023-08-30 05:06:58,078 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 286 transitions, 6489 flow [2023-08-30 05:06:58,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 316.14285714285717) internal successors, (2213), 7 states have internal predecessors, (2213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:06:58,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:06:58,079 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:06:58,087 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 (58)] Ended with exit code 0 [2023-08-30 05:06:58,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:06:58,279 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:06:58,280 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:06:58,280 INFO L85 PathProgramCache]: Analyzing trace with hash -723778866, now seen corresponding path program 10 times [2023-08-30 05:06:58,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:06:58,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [634439760] [2023-08-30 05:06:58,280 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 05:06:58,280 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:06:58,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:06:58,281 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:06:58,282 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 (59)] Waiting until timeout for monitored process [2023-08-30 05:06:58,479 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 05:06:58,479 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:06:58,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 05:06:58,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:06:58,724 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:06:58,724 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 05:06:58,724 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:06:58,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [634439760] [2023-08-30 05:06:58,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [634439760] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:06:58,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:06:58,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 05:06:58,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037486251] [2023-08-30 05:06:58,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:06:58,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 05:06:58,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:06:58,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 05:06:58,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-30 05:06:59,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 781 [2023-08-30 05:06:59,273 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 286 transitions, 6489 flow. Second operand has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:06:59,273 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:06:59,273 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 781 [2023-08-30 05:06:59,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:07:07,327 INFO L130 PetriNetUnfolder]: 18456/30783 cut-off events. [2023-08-30 05:07:07,328 INFO L131 PetriNetUnfolder]: For 422323/422323 co-relation queries the response was YES. [2023-08-30 05:07:07,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170158 conditions, 30783 events. 18456/30783 cut-off events. For 422323/422323 co-relation queries the response was YES. Maximal size of possible extension queue 1633. Compared 251898 event pairs, 10238 based on Foata normal form. 24/30807 useless extension candidates. Maximal degree in co-relation 170055. Up to 20461 conditions per place. [2023-08-30 05:07:07,917 INFO L137 encePairwiseOnDemand]: 773/781 looper letters, 255 selfloop transitions, 116 changer transitions 0/371 dead transitions. [2023-08-30 05:07:07,917 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 371 transitions, 8057 flow [2023-08-30 05:07:07,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 05:07:07,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 05:07:07,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2255 transitions. [2023-08-30 05:07:07,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4124748490945674 [2023-08-30 05:07:07,919 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2255 transitions. [2023-08-30 05:07:07,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2255 transitions. [2023-08-30 05:07:07,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:07:07,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2255 transitions. [2023-08-30 05:07:07,921 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 322.14285714285717) internal successors, (2255), 7 states have internal predecessors, (2255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:07:07,923 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:07:07,924 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:07:07,924 INFO L175 Difference]: Start difference. First operand has 234 places, 286 transitions, 6489 flow. Second operand 7 states and 2255 transitions. [2023-08-30 05:07:07,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 371 transitions, 8057 flow [2023-08-30 05:07:10,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 371 transitions, 7888 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 05:07:10,048 INFO L231 Difference]: Finished difference. Result has 238 places, 287 transitions, 6581 flow [2023-08-30 05:07:10,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=6322, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6581, PETRI_PLACES=238, PETRI_TRANSITIONS=287} [2023-08-30 05:07:10,049 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 187 predicate places. [2023-08-30 05:07:10,049 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 287 transitions, 6581 flow [2023-08-30 05:07:10,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:07:10,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:07:10,050 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:07:10,059 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 (59)] Ended with exit code 0 [2023-08-30 05:07:10,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:07:10,253 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:07:10,253 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:07:10,253 INFO L85 PathProgramCache]: Analyzing trace with hash 650497544, now seen corresponding path program 11 times [2023-08-30 05:07:10,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:07:10,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2057107254] [2023-08-30 05:07:10,254 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 05:07:10,254 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:07:10,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:07:10,255 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:07:10,256 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 (60)] Waiting until timeout for monitored process [2023-08-30 05:07:10,461 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-30 05:07:10,461 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:07:10,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 05:07:10,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:07:10,605 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:07:10,605 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 05:07:10,605 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:07:10,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2057107254] [2023-08-30 05:07:10,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2057107254] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:07:10,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:07:10,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 05:07:10,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16402076] [2023-08-30 05:07:10,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:07:10,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 05:07:10,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:07:10,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 05:07:10,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 05:07:10,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 312 out of 781 [2023-08-30 05:07:10,958 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 287 transitions, 6581 flow. Second operand has 7 states, 7 states have (on average 315.14285714285717) internal successors, (2206), 7 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:07:10,958 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:07:10,958 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 312 of 781 [2023-08-30 05:07:10,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:07:19,415 INFO L130 PetriNetUnfolder]: 18619/31230 cut-off events. [2023-08-30 05:07:19,415 INFO L131 PetriNetUnfolder]: For 437351/437351 co-relation queries the response was YES. [2023-08-30 05:07:19,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172760 conditions, 31230 events. 18619/31230 cut-off events. For 437351/437351 co-relation queries the response was YES. Maximal size of possible extension queue 1669. Compared 258691 event pairs, 10228 based on Foata normal form. 6/31236 useless extension candidates. Maximal degree in co-relation 172656. Up to 20461 conditions per place. [2023-08-30 05:07:20,024 INFO L137 encePairwiseOnDemand]: 773/781 looper letters, 249 selfloop transitions, 122 changer transitions 8/379 dead transitions. [2023-08-30 05:07:20,024 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 379 transitions, 8375 flow [2023-08-30 05:07:20,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 05:07:20,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 05:07:20,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2271 transitions. [2023-08-30 05:07:20,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41540149990854214 [2023-08-30 05:07:20,027 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2271 transitions. [2023-08-30 05:07:20,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2271 transitions. [2023-08-30 05:07:20,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:07:20,027 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2271 transitions. [2023-08-30 05:07:20,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 324.42857142857144) internal successors, (2271), 7 states have internal predecessors, (2271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:07:20,031 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:07:20,031 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:07:20,031 INFO L175 Difference]: Start difference. First operand has 238 places, 287 transitions, 6581 flow. Second operand 7 states and 2271 transitions. [2023-08-30 05:07:20,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 379 transitions, 8375 flow [2023-08-30 05:07:22,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 379 transitions, 8111 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-08-30 05:07:22,431 INFO L231 Difference]: Finished difference. Result has 243 places, 302 transitions, 6963 flow [2023-08-30 05:07:22,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=6343, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6963, PETRI_PLACES=243, PETRI_TRANSITIONS=302} [2023-08-30 05:07:22,432 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 192 predicate places. [2023-08-30 05:07:22,432 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 302 transitions, 6963 flow [2023-08-30 05:07:22,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 315.14285714285717) internal successors, (2206), 7 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:07:22,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:07:22,433 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:07:22,445 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 (60)] Forceful destruction successful, exit code 0 [2023-08-30 05:07:22,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:07:22,644 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:07:22,645 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:07:22,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1845528386, now seen corresponding path program 12 times [2023-08-30 05:07:22,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:07:22,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [531388235] [2023-08-30 05:07:22,645 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 05:07:22,645 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:07:22,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:07:22,646 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:07:22,647 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 (61)] Waiting until timeout for monitored process [2023-08-30 05:07:22,906 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-30 05:07:22,907 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:07:22,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 05:07:22,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:07:23,171 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:07:23,171 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 05:07:23,171 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:07:23,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [531388235] [2023-08-30 05:07:23,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [531388235] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:07:23,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:07:23,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 05:07:23,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664174618] [2023-08-30 05:07:23,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:07:23,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 05:07:23,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:07:23,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 05:07:23,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-30 05:07:23,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 312 out of 781 [2023-08-30 05:07:23,555 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 302 transitions, 6963 flow. Second operand has 7 states, 7 states have (on average 315.14285714285717) internal successors, (2206), 7 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:07:23,555 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:07:23,555 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 312 of 781 [2023-08-30 05:07:23,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:07:31,495 INFO L130 PetriNetUnfolder]: 18584/31147 cut-off events. [2023-08-30 05:07:31,495 INFO L131 PetriNetUnfolder]: For 445838/445838 co-relation queries the response was YES. [2023-08-30 05:07:32,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174008 conditions, 31147 events. 18584/31147 cut-off events. For 445838/445838 co-relation queries the response was YES. Maximal size of possible extension queue 1667. Compared 257513 event pairs, 10254 based on Foata normal form. 6/31153 useless extension candidates. Maximal degree in co-relation 173910. Up to 20461 conditions per place. [2023-08-30 05:07:32,329 INFO L137 encePairwiseOnDemand]: 773/781 looper letters, 252 selfloop transitions, 127 changer transitions 8/387 dead transitions. [2023-08-30 05:07:32,329 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 387 transitions, 8536 flow [2023-08-30 05:07:32,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 05:07:32,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 05:07:32,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2275 transitions. [2023-08-30 05:07:32,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41613316261203587 [2023-08-30 05:07:32,331 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2275 transitions. [2023-08-30 05:07:32,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2275 transitions. [2023-08-30 05:07:32,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:07:32,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2275 transitions. [2023-08-30 05:07:32,333 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 325.0) internal successors, (2275), 7 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:07:32,335 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:07:32,335 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:07:32,335 INFO L175 Difference]: Start difference. First operand has 243 places, 302 transitions, 6963 flow. Second operand 7 states and 2275 transitions. [2023-08-30 05:07:32,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 387 transitions, 8536 flow [2023-08-30 05:07:34,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 387 transitions, 8358 flow, removed 13 selfloop flow, removed 2 redundant places. [2023-08-30 05:07:34,848 INFO L231 Difference]: Finished difference. Result has 247 places, 303 transitions, 7057 flow [2023-08-30 05:07:34,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=6748, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7057, PETRI_PLACES=247, PETRI_TRANSITIONS=303} [2023-08-30 05:07:34,848 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 196 predicate places. [2023-08-30 05:07:34,848 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 303 transitions, 7057 flow [2023-08-30 05:07:34,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 315.14285714285717) internal successors, (2206), 7 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:07:34,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:07:34,849 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:07:34,858 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 (61)] Forceful destruction successful, exit code 0 [2023-08-30 05:07:35,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:07:35,051 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:07:35,051 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:07:35,051 INFO L85 PathProgramCache]: Analyzing trace with hash -2086489685, now seen corresponding path program 9 times [2023-08-30 05:07:35,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:07:35,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1488160276] [2023-08-30 05:07:35,051 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 05:07:35,051 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:07:35,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:07:35,052 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:07:35,053 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 (62)] Waiting until timeout for monitored process [2023-08-30 05:07:35,280 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-30 05:07:35,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:07:35,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 05:07:35,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:07:35,417 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:07:35,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:07:35,757 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:07:35,758 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:07:35,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1488160276] [2023-08-30 05:07:35,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1488160276] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-30 05:07:35,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 05:07:35,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 11 [2023-08-30 05:07:35,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506355810] [2023-08-30 05:07:35,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:07:35,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 05:07:35,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:07:35,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 05:07:35,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-08-30 05:07:36,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 781 [2023-08-30 05:07:36,595 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 303 transitions, 7057 flow. Second operand has 7 states, 7 states have (on average 316.14285714285717) internal successors, (2213), 7 states have internal predecessors, (2213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:07:36,595 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:07:36,595 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 781 [2023-08-30 05:07:36,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:07:45,672 INFO L130 PetriNetUnfolder]: 19529/32958 cut-off events. [2023-08-30 05:07:45,672 INFO L131 PetriNetUnfolder]: For 465205/465205 co-relation queries the response was YES. [2023-08-30 05:07:46,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182057 conditions, 32958 events. 19529/32958 cut-off events. For 465205/465205 co-relation queries the response was YES. Maximal size of possible extension queue 1781. Compared 279546 event pairs, 7542 based on Foata normal form. 30/32988 useless extension candidates. Maximal degree in co-relation 181958. Up to 10083 conditions per place. [2023-08-30 05:07:46,387 INFO L137 encePairwiseOnDemand]: 773/781 looper letters, 304 selfloop transitions, 112 changer transitions 0/416 dead transitions. [2023-08-30 05:07:46,387 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 416 transitions, 9254 flow [2023-08-30 05:07:46,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 05:07:46,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 05:07:46,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2287 transitions. [2023-08-30 05:07:46,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41832815072251694 [2023-08-30 05:07:46,389 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2287 transitions. [2023-08-30 05:07:46,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2287 transitions. [2023-08-30 05:07:46,389 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:07:46,390 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2287 transitions. [2023-08-30 05:07:46,391 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 326.7142857142857) internal successors, (2287), 7 states have internal predecessors, (2287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:07:46,393 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:07:46,393 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:07:46,393 INFO L175 Difference]: Start difference. First operand has 247 places, 303 transitions, 7057 flow. Second operand 7 states and 2287 transitions. [2023-08-30 05:07:46,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 416 transitions, 9254 flow [2023-08-30 05:07:49,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 416 transitions, 8984 flow, removed 20 selfloop flow, removed 4 redundant places. [2023-08-30 05:07:49,034 INFO L231 Difference]: Finished difference. Result has 251 places, 306 transitions, 7135 flow [2023-08-30 05:07:49,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=6765, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7135, PETRI_PLACES=251, PETRI_TRANSITIONS=306} [2023-08-30 05:07:49,035 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 200 predicate places. [2023-08-30 05:07:49,035 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 306 transitions, 7135 flow [2023-08-30 05:07:49,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 316.14285714285717) internal successors, (2213), 7 states have internal predecessors, (2213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:07:49,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:07:49,035 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:07:49,043 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 (62)] Ended with exit code 0 [2023-08-30 05:07:49,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:07:49,236 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:07:49,236 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:07:49,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1473341329, now seen corresponding path program 10 times [2023-08-30 05:07:49,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:07:49,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [462767017] [2023-08-30 05:07:49,237 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 05:07:49,237 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:07:49,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:07:49,238 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:07:49,239 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 (63)] Waiting until timeout for monitored process [2023-08-30 05:07:49,438 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 05:07:49,438 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:07:49,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 05:07:49,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:07:49,650 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:07:49,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:07:50,038 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:07:50,038 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:07:50,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [462767017] [2023-08-30 05:07:50,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [462767017] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-30 05:07:50,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 05:07:50,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2023-08-30 05:07:50,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97987186] [2023-08-30 05:07:50,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:07:50,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 05:07:50,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:07:50,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 05:07:50,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-08-30 05:07:50,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 781 [2023-08-30 05:07:50,869 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 306 transitions, 7135 flow. Second operand has 7 states, 7 states have (on average 316.14285714285717) internal successors, (2213), 7 states have internal predecessors, (2213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:07:50,869 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:07:50,869 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 781 [2023-08-30 05:07:50,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:08:00,075 INFO L130 PetriNetUnfolder]: 19539/32998 cut-off events. [2023-08-30 05:08:00,076 INFO L131 PetriNetUnfolder]: For 483510/483510 co-relation queries the response was YES. [2023-08-30 05:08:00,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185223 conditions, 32998 events. 19539/32998 cut-off events. For 483510/483510 co-relation queries the response was YES. Maximal size of possible extension queue 1786. Compared 278871 event pairs, 8686 based on Foata normal form. 30/33028 useless extension candidates. Maximal degree in co-relation 185122. Up to 10083 conditions per place. [2023-08-30 05:08:00,810 INFO L137 encePairwiseOnDemand]: 773/781 looper letters, 298 selfloop transitions, 113 changer transitions 0/411 dead transitions. [2023-08-30 05:08:00,810 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 411 transitions, 9211 flow [2023-08-30 05:08:00,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 05:08:00,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 05:08:00,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2284 transitions. [2023-08-30 05:08:00,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41777940369489663 [2023-08-30 05:08:00,812 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2284 transitions. [2023-08-30 05:08:00,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2284 transitions. [2023-08-30 05:08:00,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:08:00,813 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2284 transitions. [2023-08-30 05:08:00,814 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 326.2857142857143) internal successors, (2284), 7 states have internal predecessors, (2284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:08:00,816 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:08:00,816 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:08:00,816 INFO L175 Difference]: Start difference. First operand has 251 places, 306 transitions, 7135 flow. Second operand 7 states and 2284 transitions. [2023-08-30 05:08:00,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 411 transitions, 9211 flow [2023-08-30 05:08:03,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 411 transitions, 9069 flow, removed 9 selfloop flow, removed 3 redundant places. [2023-08-30 05:08:03,839 INFO L231 Difference]: Finished difference. Result has 256 places, 314 transitions, 7459 flow [2023-08-30 05:08:03,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=7001, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7459, PETRI_PLACES=256, PETRI_TRANSITIONS=314} [2023-08-30 05:08:03,840 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 205 predicate places. [2023-08-30 05:08:03,840 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 314 transitions, 7459 flow [2023-08-30 05:08:03,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 316.14285714285717) internal successors, (2213), 7 states have internal predecessors, (2213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:08:03,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:08:03,840 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:08:03,849 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 (63)] Forceful destruction successful, exit code 0 [2023-08-30 05:08:04,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:08:04,041 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:08:04,041 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:08:04,041 INFO L85 PathProgramCache]: Analyzing trace with hash -446767957, now seen corresponding path program 11 times [2023-08-30 05:08:04,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:08:04,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [95340813] [2023-08-30 05:08:04,042 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 05:08:04,042 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:08:04,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:08:04,045 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:08:04,048 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 (64)] Waiting until timeout for monitored process [2023-08-30 05:08:04,259 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-30 05:08:04,259 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:08:04,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 05:08:04,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:08:04,433 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:08:04,434 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 05:08:04,434 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:08:04,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [95340813] [2023-08-30 05:08:04,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [95340813] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:08:04,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:08:04,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 05:08:04,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707731990] [2023-08-30 05:08:04,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:08:04,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 05:08:04,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:08:04,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 05:08:04,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 05:08:04,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 781 [2023-08-30 05:08:04,768 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 314 transitions, 7459 flow. Second operand has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:08:04,769 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:08:04,769 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 781 [2023-08-30 05:08:04,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:08:13,547 INFO L130 PetriNetUnfolder]: 19521/32944 cut-off events. [2023-08-30 05:08:13,547 INFO L131 PetriNetUnfolder]: For 501043/501043 co-relation queries the response was YES. [2023-08-30 05:08:14,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188190 conditions, 32944 events. 19521/32944 cut-off events. For 501043/501043 co-relation queries the response was YES. Maximal size of possible extension queue 1781. Compared 277449 event pairs, 10764 based on Foata normal form. 4/32948 useless extension candidates. Maximal degree in co-relation 188088. Up to 22269 conditions per place. [2023-08-30 05:08:14,418 INFO L137 encePairwiseOnDemand]: 773/781 looper letters, 253 selfloop transitions, 125 changer transitions 4/382 dead transitions. [2023-08-30 05:08:14,418 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 382 transitions, 8863 flow [2023-08-30 05:08:14,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 05:08:14,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 05:08:14,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2246 transitions. [2023-08-30 05:08:14,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4108286080117066 [2023-08-30 05:08:14,421 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2246 transitions. [2023-08-30 05:08:14,421 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2246 transitions. [2023-08-30 05:08:14,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:08:14,422 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2246 transitions. [2023-08-30 05:08:14,423 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 320.85714285714283) internal successors, (2246), 7 states have internal predecessors, (2246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:08:14,426 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:08:14,426 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:08:14,426 INFO L175 Difference]: Start difference. First operand has 256 places, 314 transitions, 7459 flow. Second operand 7 states and 2246 transitions. [2023-08-30 05:08:14,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 382 transitions, 8863 flow [2023-08-30 05:08:17,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 382 transitions, 8677 flow, removed 8 selfloop flow, removed 3 redundant places. [2023-08-30 05:08:17,296 INFO L231 Difference]: Finished difference. Result has 259 places, 312 transitions, 7471 flow [2023-08-30 05:08:17,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=7244, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7471, PETRI_PLACES=259, PETRI_TRANSITIONS=312} [2023-08-30 05:08:17,296 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 208 predicate places. [2023-08-30 05:08:17,296 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 312 transitions, 7471 flow [2023-08-30 05:08:17,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:08:17,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:08:17,297 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:08:17,306 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 (64)] Ended with exit code 0 [2023-08-30 05:08:17,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:08:17,497 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:08:17,498 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:08:17,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1695526514, now seen corresponding path program 13 times [2023-08-30 05:08:17,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:08:17,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [662459142] [2023-08-30 05:08:17,498 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-30 05:08:17,498 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:08:17,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:08:17,499 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:08:17,500 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 (65)] Waiting until timeout for monitored process [2023-08-30 05:08:17,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:08:17,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 05:08:17,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:08:17,970 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:08:17,970 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:08:18,572 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:08:18,573 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:08:18,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [662459142] [2023-08-30 05:08:18,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [662459142] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-30 05:08:18,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 05:08:18,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2023-08-30 05:08:18,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686041739] [2023-08-30 05:08:18,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:08:18,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 05:08:18,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:08:18,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 05:08:18,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2023-08-30 05:08:19,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 781 [2023-08-30 05:08:19,692 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 312 transitions, 7471 flow. Second operand has 7 states, 7 states have (on average 316.14285714285717) internal successors, (2213), 7 states have internal predecessors, (2213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:08:19,692 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:08:19,692 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 781 [2023-08-30 05:08:19,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:08:29,314 INFO L130 PetriNetUnfolder]: 19858/33571 cut-off events. [2023-08-30 05:08:29,315 INFO L131 PetriNetUnfolder]: For 510842/510842 co-relation queries the response was YES. [2023-08-30 05:08:30,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192550 conditions, 33571 events. 19858/33571 cut-off events. For 510842/510842 co-relation queries the response was YES. Maximal size of possible extension queue 1817. Compared 284246 event pairs, 11000 based on Foata normal form. 12/33583 useless extension candidates. Maximal degree in co-relation 192448. Up to 22329 conditions per place. [2023-08-30 05:08:30,155 INFO L137 encePairwiseOnDemand]: 773/781 looper letters, 265 selfloop transitions, 129 changer transitions 0/394 dead transitions. [2023-08-30 05:08:30,155 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 394 transitions, 9104 flow [2023-08-30 05:08:30,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 05:08:30,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 05:08:30,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2285 transitions. [2023-08-30 05:08:30,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41796231937077005 [2023-08-30 05:08:30,158 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2285 transitions. [2023-08-30 05:08:30,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2285 transitions. [2023-08-30 05:08:30,158 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:08:30,158 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2285 transitions. [2023-08-30 05:08:30,159 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 326.42857142857144) internal successors, (2285), 7 states have internal predecessors, (2285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:08:30,162 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:08:30,162 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:08:30,162 INFO L175 Difference]: Start difference. First operand has 259 places, 312 transitions, 7471 flow. Second operand 7 states and 2285 transitions. [2023-08-30 05:08:30,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 394 transitions, 9104 flow [2023-08-30 05:08:32,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 394 transitions, 8840 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-30 05:08:32,877 INFO L231 Difference]: Finished difference. Result has 262 places, 327 transitions, 7983 flow [2023-08-30 05:08:32,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=7221, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7983, PETRI_PLACES=262, PETRI_TRANSITIONS=327} [2023-08-30 05:08:32,877 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 211 predicate places. [2023-08-30 05:08:32,877 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 327 transitions, 7983 flow [2023-08-30 05:08:32,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 316.14285714285717) internal successors, (2213), 7 states have internal predecessors, (2213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:08:32,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:08:32,878 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:08:32,886 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 (65)] Forceful destruction successful, exit code 0 [2023-08-30 05:08:33,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:08:33,081 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:08:33,081 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:08:33,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1056687234, now seen corresponding path program 14 times [2023-08-30 05:08:33,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:08:33,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [251387659] [2023-08-30 05:08:33,081 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 05:08:33,081 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:08:33,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:08:33,082 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:08:33,083 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 (66)] Waiting until timeout for monitored process [2023-08-30 05:08:33,337 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 05:08:33,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:08:33,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 05:08:33,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:08:33,522 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:08:33,522 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 05:08:33,522 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:08:33,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [251387659] [2023-08-30 05:08:33,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [251387659] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:08:33,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:08:33,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 05:08:33,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471746304] [2023-08-30 05:08:33,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:08:33,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 05:08:33,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:08:33,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 05:08:33,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-30 05:08:33,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 781 [2023-08-30 05:08:33,887 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 327 transitions, 7983 flow. Second operand has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:08:33,887 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:08:33,887 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 781 [2023-08-30 05:08:33,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:08:42,887 INFO L130 PetriNetUnfolder]: 19852/33565 cut-off events. [2023-08-30 05:08:42,888 INFO L131 PetriNetUnfolder]: For 516867/516867 co-relation queries the response was YES. [2023-08-30 05:08:43,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193550 conditions, 33565 events. 19852/33565 cut-off events. For 516867/516867 co-relation queries the response was YES. Maximal size of possible extension queue 1817. Compared 284508 event pairs, 10752 based on Foata normal form. 6/33571 useless extension candidates. Maximal degree in co-relation 193444. Up to 22329 conditions per place. [2023-08-30 05:08:43,796 INFO L137 encePairwiseOnDemand]: 773/781 looper letters, 248 selfloop transitions, 128 changer transitions 6/382 dead transitions. [2023-08-30 05:08:43,797 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 382 transitions, 9118 flow [2023-08-30 05:08:43,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 05:08:43,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 05:08:43,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2242 transitions. [2023-08-30 05:08:43,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4100969453082129 [2023-08-30 05:08:43,798 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2242 transitions. [2023-08-30 05:08:43,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2242 transitions. [2023-08-30 05:08:43,799 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:08:43,799 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2242 transitions. [2023-08-30 05:08:43,800 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 320.2857142857143) internal successors, (2242), 7 states have internal predecessors, (2242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:08:43,802 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:08:43,803 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:08:43,803 INFO L175 Difference]: Start difference. First operand has 262 places, 327 transitions, 7983 flow. Second operand 7 states and 2242 transitions. [2023-08-30 05:08:43,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 382 transitions, 9118 flow [2023-08-30 05:08:46,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 382 transitions, 8943 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-08-30 05:08:46,842 INFO L231 Difference]: Finished difference. Result has 267 places, 327 transitions, 8051 flow [2023-08-30 05:08:46,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=7772, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8051, PETRI_PLACES=267, PETRI_TRANSITIONS=327} [2023-08-30 05:08:46,843 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 216 predicate places. [2023-08-30 05:08:46,843 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 327 transitions, 8051 flow [2023-08-30 05:08:46,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:08:46,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:08:46,844 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:08:46,854 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 (66)] Forceful destruction successful, exit code 0 [2023-08-30 05:08:47,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:08:47,044 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:08:47,045 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:08:47,045 INFO L85 PathProgramCache]: Analyzing trace with hash 2006868412, now seen corresponding path program 15 times [2023-08-30 05:08:47,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:08:47,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1555005258] [2023-08-30 05:08:47,045 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 05:08:47,045 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:08:47,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:08:47,046 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:08:47,047 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 (67)] Waiting until timeout for monitored process [2023-08-30 05:08:47,276 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-30 05:08:47,276 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:08:47,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 05:08:47,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:08:47,463 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:08:47,463 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 05:08:47,463 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:08:47,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1555005258] [2023-08-30 05:08:47,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1555005258] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:08:47,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:08:47,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 05:08:47,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204299702] [2023-08-30 05:08:47,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:08:47,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 05:08:47,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:08:47,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 05:08:47,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-30 05:08:47,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 781 [2023-08-30 05:08:47,993 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 327 transitions, 8051 flow. Second operand has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:08:47,993 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:08:47,993 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 781 [2023-08-30 05:08:47,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:08:57,160 INFO L130 PetriNetUnfolder]: 19867/33586 cut-off events. [2023-08-30 05:08:57,160 INFO L131 PetriNetUnfolder]: For 522407/522407 co-relation queries the response was YES. [2023-08-30 05:08:57,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193913 conditions, 33586 events. 19867/33586 cut-off events. For 522407/522407 co-relation queries the response was YES. Maximal size of possible extension queue 1819. Compared 284546 event pairs, 10752 based on Foata normal form. 12/33598 useless extension candidates. Maximal degree in co-relation 193806. Up to 22329 conditions per place. [2023-08-30 05:08:58,022 INFO L137 encePairwiseOnDemand]: 773/781 looper letters, 252 selfloop transitions, 129 changer transitions 0/381 dead transitions. [2023-08-30 05:08:58,023 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 381 transitions, 9201 flow [2023-08-30 05:08:58,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 05:08:58,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 05:08:58,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2240 transitions. [2023-08-30 05:08:58,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40973111395646605 [2023-08-30 05:08:58,025 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2240 transitions. [2023-08-30 05:08:58,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2240 transitions. [2023-08-30 05:08:58,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:08:58,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2240 transitions. [2023-08-30 05:08:58,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 320.0) internal successors, (2240), 7 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:08:58,028 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:08:58,029 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:08:58,029 INFO L175 Difference]: Start difference. First operand has 267 places, 327 transitions, 8051 flow. Second operand 7 states and 2240 transitions. [2023-08-30 05:08:58,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 381 transitions, 9201 flow [2023-08-30 05:09:01,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 381 transitions, 9041 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-30 05:09:01,063 INFO L231 Difference]: Finished difference. Result has 271 places, 328 transitions, 8171 flow [2023-08-30 05:09:01,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=7892, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8171, PETRI_PLACES=271, PETRI_TRANSITIONS=328} [2023-08-30 05:09:01,063 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 220 predicate places. [2023-08-30 05:09:01,064 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 328 transitions, 8171 flow [2023-08-30 05:09:01,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:09:01,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:09:01,064 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:09:01,073 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 (67)] Ended with exit code 0 [2023-08-30 05:09:01,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:09:01,265 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:09:01,265 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:09:01,265 INFO L85 PathProgramCache]: Analyzing trace with hash 73095031, now seen corresponding path program 12 times [2023-08-30 05:09:01,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:09:01,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [162393951] [2023-08-30 05:09:01,266 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 05:09:01,266 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:09:01,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:09:01,267 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:09:01,268 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 (68)] Waiting until timeout for monitored process [2023-08-30 05:09:01,563 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-30 05:09:01,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:09:01,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 05:09:01,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:09:01,843 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:09:01,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:09:02,372 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:09:02,373 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:09:02,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [162393951] [2023-08-30 05:09:02,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [162393951] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-30 05:09:02,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 05:09:02,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2023-08-30 05:09:02,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181024085] [2023-08-30 05:09:02,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:09:02,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 05:09:02,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:09:02,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 05:09:02,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-08-30 05:09:03,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 781 [2023-08-30 05:09:03,859 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 328 transitions, 8171 flow. Second operand has 7 states, 7 states have (on average 316.14285714285717) internal successors, (2213), 7 states have internal predecessors, (2213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:09:03,859 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:09:03,859 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 781 [2023-08-30 05:09:03,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:09:13,991 INFO L130 PetriNetUnfolder]: 20313/34384 cut-off events. [2023-08-30 05:09:13,991 INFO L131 PetriNetUnfolder]: For 551731/551731 co-relation queries the response was YES. [2023-08-30 05:09:14,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200548 conditions, 34384 events. 20313/34384 cut-off events. For 551731/551731 co-relation queries the response was YES. Maximal size of possible extension queue 1861. Compared 293143 event pairs, 10218 based on Foata normal form. 12/34396 useless extension candidates. Maximal degree in co-relation 200440. Up to 14963 conditions per place. [2023-08-30 05:09:14,776 INFO L137 encePairwiseOnDemand]: 773/781 looper letters, 292 selfloop transitions, 137 changer transitions 0/429 dead transitions. [2023-08-30 05:09:14,776 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 429 transitions, 10153 flow [2023-08-30 05:09:14,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 05:09:14,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 05:09:14,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2285 transitions. [2023-08-30 05:09:14,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41796231937077005 [2023-08-30 05:09:14,778 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2285 transitions. [2023-08-30 05:09:14,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2285 transitions. [2023-08-30 05:09:14,779 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:09:14,779 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2285 transitions. [2023-08-30 05:09:14,780 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 326.42857142857144) internal successors, (2285), 7 states have internal predecessors, (2285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:09:14,782 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:09:14,783 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:09:14,783 INFO L175 Difference]: Start difference. First operand has 271 places, 328 transitions, 8171 flow. Second operand 7 states and 2285 transitions. [2023-08-30 05:09:14,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 429 transitions, 10153 flow [2023-08-30 05:09:18,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 429 transitions, 9883 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-30 05:09:18,228 INFO L231 Difference]: Finished difference. Result has 275 places, 345 transitions, 8641 flow [2023-08-30 05:09:18,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=7913, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8641, PETRI_PLACES=275, PETRI_TRANSITIONS=345} [2023-08-30 05:09:18,229 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 224 predicate places. [2023-08-30 05:09:18,229 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 345 transitions, 8641 flow [2023-08-30 05:09:18,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 316.14285714285717) internal successors, (2213), 7 states have internal predecessors, (2213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:09:18,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:09:18,230 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:09:18,241 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 (68)] Ended with exit code 0 [2023-08-30 05:09:18,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:09:18,437 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:09:18,438 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:09:18,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1687649186, now seen corresponding path program 16 times [2023-08-30 05:09:18,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:09:18,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [621294757] [2023-08-30 05:09:18,438 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 05:09:18,438 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:09:18,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:09:18,439 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:09:18,440 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 (69)] Waiting until timeout for monitored process [2023-08-30 05:09:18,658 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 05:09:18,659 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:09:18,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 05:09:18,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:09:18,906 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:09:18,906 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:09:19,450 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:09:19,451 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:09:19,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [621294757] [2023-08-30 05:09:19,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [621294757] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-30 05:09:19,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 05:09:19,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2023-08-30 05:09:19,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574388697] [2023-08-30 05:09:19,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:09:19,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 05:09:19,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:09:19,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 05:09:19,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2023-08-30 05:09:20,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 781 [2023-08-30 05:09:20,520 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 345 transitions, 8641 flow. Second operand has 7 states, 7 states have (on average 316.14285714285717) internal successors, (2213), 7 states have internal predecessors, (2213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:09:20,520 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:09:20,520 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 781 [2023-08-30 05:09:20,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:09:31,206 INFO L130 PetriNetUnfolder]: 20315/34408 cut-off events. [2023-08-30 05:09:31,206 INFO L131 PetriNetUnfolder]: For 579070/579070 co-relation queries the response was YES. [2023-08-30 05:09:32,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 203985 conditions, 34408 events. 20315/34408 cut-off events. For 579070/579070 co-relation queries the response was YES. Maximal size of possible extension queue 1864. Compared 293373 event pairs, 11102 based on Foata normal form. 12/34420 useless extension candidates. Maximal degree in co-relation 203874. Up to 23067 conditions per place. [2023-08-30 05:09:32,214 INFO L137 encePairwiseOnDemand]: 773/781 looper letters, 277 selfloop transitions, 136 changer transitions 0/413 dead transitions. [2023-08-30 05:09:32,214 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 413 transitions, 9930 flow [2023-08-30 05:09:32,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 05:09:32,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 05:09:32,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2281 transitions. [2023-08-30 05:09:32,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4172306566672764 [2023-08-30 05:09:32,217 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2281 transitions. [2023-08-30 05:09:32,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2281 transitions. [2023-08-30 05:09:32,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:09:32,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2281 transitions. [2023-08-30 05:09:32,219 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 325.85714285714283) internal successors, (2281), 7 states have internal predecessors, (2281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:09:32,221 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:09:32,221 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:09:32,221 INFO L175 Difference]: Start difference. First operand has 275 places, 345 transitions, 8641 flow. Second operand 7 states and 2281 transitions. [2023-08-30 05:09:32,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 413 transitions, 9930 flow [2023-08-30 05:09:35,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 413 transitions, 9759 flow, removed 26 selfloop flow, removed 2 redundant places. [2023-08-30 05:09:35,651 INFO L231 Difference]: Finished difference. Result has 281 places, 348 transitions, 8799 flow [2023-08-30 05:09:35,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=8479, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8799, PETRI_PLACES=281, PETRI_TRANSITIONS=348} [2023-08-30 05:09:35,652 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 230 predicate places. [2023-08-30 05:09:35,652 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 348 transitions, 8799 flow [2023-08-30 05:09:35,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 316.14285714285717) internal successors, (2213), 7 states have internal predecessors, (2213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:09:35,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:09:35,653 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:09:35,661 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 (69)] Forceful destruction successful, exit code 0 [2023-08-30 05:09:35,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:09:35,856 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:09:35,856 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:09:35,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1246107217, now seen corresponding path program 13 times [2023-08-30 05:09:35,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:09:35,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [276142866] [2023-08-30 05:09:35,856 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-30 05:09:35,857 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:09:35,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:09:35,857 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:09:35,858 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 (70)] Waiting until timeout for monitored process [2023-08-30 05:09:36,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:09:36,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 05:09:36,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:09:36,324 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:09:36,324 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:09:36,834 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:09:36,834 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:09:36,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [276142866] [2023-08-30 05:09:36,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [276142866] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-30 05:09:36,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 05:09:36,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2023-08-30 05:09:36,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23759443] [2023-08-30 05:09:36,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:09:36,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 05:09:36,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:09:36,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 05:09:36,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-08-30 05:09:37,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 781 [2023-08-30 05:09:37,907 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 348 transitions, 8799 flow. Second operand has 7 states, 7 states have (on average 316.14285714285717) internal successors, (2213), 7 states have internal predecessors, (2213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:09:37,907 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:09:37,907 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 781 [2023-08-30 05:09:37,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand