./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/weaver/unroll-cond-4.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/unroll-cond-4.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 4755329f7559a8be1422f8772c1ed30abe185c2742a237de140cc196ec4e9010 --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 07:48:37,340 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 07:48:37,342 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 07:48:37,373 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 07:48:37,375 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 07:48:37,378 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 07:48:37,382 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 07:48:37,385 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 07:48:37,387 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 07:48:37,391 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 07:48:37,392 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 07:48:37,395 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 07:48:37,395 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 07:48:37,397 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 07:48:37,400 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 07:48:37,404 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 07:48:37,405 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 07:48:37,406 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 07:48:37,408 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 07:48:37,413 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 07:48:37,415 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 07:48:37,422 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 07:48:37,423 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 07:48:37,424 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 07:48:37,432 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 07:48:37,432 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 07:48:37,433 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 07:48:37,435 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 07:48:37,435 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 07:48:37,436 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 07:48:37,436 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 07:48:37,441 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 07:48:37,443 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 07:48:37,444 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 07:48:37,445 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 07:48:37,445 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 07:48:37,446 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 07:48:37,446 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 07:48:37,446 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 07:48:37,447 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 07:48:37,447 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 07:48:37,449 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-30 07:48:37,485 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 07:48:37,486 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 07:48:37,487 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 07:48:37,487 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 07:48:37,488 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 07:48:37,488 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 07:48:37,489 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 07:48:37,489 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 07:48:37,489 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 07:48:37,489 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 07:48:37,490 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 07:48:37,490 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 07:48:37,491 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 07:48:37,491 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 07:48:37,491 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 07:48:37,491 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 07:48:37,491 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 07:48:37,492 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 07:48:37,492 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 07:48:37,493 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 07:48:37,493 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 07:48:37,497 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 07:48:37,498 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 07:48:37,498 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 07:48:37,499 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 07:48:37,499 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 07:48:37,499 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 07:48:37,499 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 07:48:37,500 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 07:48:37,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 07:48:37,500 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 07:48:37,500 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 07:48:37,501 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 07:48:37,501 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 07:48:37,501 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4755329f7559a8be1422f8772c1ed30abe185c2742a237de140cc196ec4e9010 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 07:48:37,786 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 07:48:37,807 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 07:48:37,810 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 07:48:37,812 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 07:48:37,812 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 07:48:37,814 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/unroll-cond-4.wvr.c [2023-08-30 07:48:39,126 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 07:48:39,383 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 07:48:39,383 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-cond-4.wvr.c [2023-08-30 07:48:39,391 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e669b26f6/8aa8bfeca8f141b0b869a8544ac85eca/FLAG36d7b9d7a [2023-08-30 07:48:39,418 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e669b26f6/8aa8bfeca8f141b0b869a8544ac85eca [2023-08-30 07:48:39,421 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 07:48:39,422 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 07:48:39,423 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 07:48:39,424 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 07:48:39,426 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 07:48:39,428 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 07:48:39" (1/1) ... [2023-08-30 07:48:39,431 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37fe6d6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:48:39, skipping insertion in model container [2023-08-30 07:48:39,431 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 07:48:39" (1/1) ... [2023-08-30 07:48:39,437 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 07:48:39,461 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 07:48:39,659 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/unroll-cond-4.wvr.c[2808,2821] [2023-08-30 07:48:39,673 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 07:48:39,687 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 07:48:39,689 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@57f1afcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:48:39, skipping insertion in model container [2023-08-30 07:48:39,689 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 07:48:39,690 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-08-30 07:48:39,692 INFO L158 Benchmark]: Toolchain (without parser) took 268.65ms. Allocated memory is still 71.3MB. Free memory was 48.6MB in the beginning and 38.7MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-08-30 07:48:39,692 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 58.7MB. Free memory is still 36.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 07:48:39,693 INFO L158 Benchmark]: CACSL2BoogieTranslator took 266.43ms. Allocated memory is still 71.3MB. Free memory was 48.4MB in the beginning and 38.7MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-08-30 07:48:39,695 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 58.7MB. Free memory is still 36.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 266.43ms. Allocated memory is still 71.3MB. Free memory was 48.4MB in the beginning and 38.7MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 116]: 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/unroll-cond-4.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 4755329f7559a8be1422f8772c1ed30abe185c2742a237de140cc196ec4e9010 --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 07:48:41,373 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 07:48:41,375 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 07:48:41,407 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 07:48:41,412 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 07:48:41,415 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 07:48:41,416 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 07:48:41,419 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 07:48:41,421 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 07:48:41,425 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 07:48:41,427 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 07:48:41,429 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 07:48:41,431 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 07:48:41,433 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 07:48:41,434 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 07:48:41,437 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 07:48:41,438 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 07:48:41,439 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 07:48:41,442 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 07:48:41,446 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 07:48:41,456 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 07:48:41,457 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 07:48:41,458 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 07:48:41,459 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 07:48:41,467 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 07:48:41,467 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 07:48:41,468 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 07:48:41,470 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 07:48:41,470 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 07:48:41,471 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 07:48:41,475 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 07:48:41,476 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 07:48:41,477 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 07:48:41,478 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 07:48:41,479 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 07:48:41,480 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 07:48:41,481 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 07:48:41,481 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 07:48:41,481 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 07:48:41,482 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 07:48:41,482 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 07:48:41,484 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-08-30 07:48:41,521 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 07:48:41,521 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 07:48:41,522 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 07:48:41,523 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 07:48:41,524 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 07:48:41,524 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 07:48:41,524 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 07:48:41,524 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 07:48:41,525 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 07:48:41,525 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 07:48:41,526 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 07:48:41,526 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 07:48:41,526 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 07:48:41,526 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 07:48:41,526 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 07:48:41,527 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 07:48:41,527 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 07:48:41,527 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 07:48:41,527 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 07:48:41,527 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 07:48:41,528 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-08-30 07:48:41,528 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-08-30 07:48:41,528 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 07:48:41,528 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 07:48:41,528 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 07:48:41,529 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 07:48:41,529 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 07:48:41,529 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 07:48:41,529 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 07:48:41,529 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 07:48:41,529 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-08-30 07:48:41,530 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-08-30 07:48:41,530 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 07:48:41,530 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 07:48:41,530 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 07:48:41,531 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-08-30 07:48:41,531 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 07:48:41,531 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4755329f7559a8be1422f8772c1ed30abe185c2742a237de140cc196ec4e9010 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 07:48:41,857 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 07:48:41,880 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 07:48:41,883 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 07:48:41,885 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 07:48:41,885 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 07:48:41,886 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/unroll-cond-4.wvr.c [2023-08-30 07:48:43,149 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 07:48:43,353 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 07:48:43,354 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-cond-4.wvr.c [2023-08-30 07:48:43,360 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0da8691d/dc86f0416bdd48da92e639f1188326c7/FLAG6d381bc63 [2023-08-30 07:48:43,373 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0da8691d/dc86f0416bdd48da92e639f1188326c7 [2023-08-30 07:48:43,375 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 07:48:43,376 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 07:48:43,385 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 07:48:43,386 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 07:48:43,389 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 07:48:43,389 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 07:48:43" (1/1) ... [2023-08-30 07:48:43,390 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54463f33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:48:43, skipping insertion in model container [2023-08-30 07:48:43,390 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 07:48:43" (1/1) ... [2023-08-30 07:48:43,396 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 07:48:43,411 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 07:48:43,612 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/unroll-cond-4.wvr.c[2808,2821] [2023-08-30 07:48:43,627 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 07:48:43,645 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-08-30 07:48:43,654 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 07:48:43,683 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/unroll-cond-4.wvr.c[2808,2821] [2023-08-30 07:48:43,690 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 07:48:43,699 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 07:48:43,737 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/unroll-cond-4.wvr.c[2808,2821] [2023-08-30 07:48:43,743 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 07:48:43,759 INFO L208 MainTranslator]: Completed translation [2023-08-30 07:48:43,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:48:43 WrapperNode [2023-08-30 07:48:43,759 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 07:48:43,761 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 07:48:43,761 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 07:48:43,761 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 07:48:43,767 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:48:43" (1/1) ... [2023-08-30 07:48:43,789 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:48:43" (1/1) ... [2023-08-30 07:48:43,818 INFO L138 Inliner]: procedures = 26, calls = 41, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 184 [2023-08-30 07:48:43,818 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 07:48:43,819 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 07:48:43,819 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 07:48:43,819 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 07:48:43,827 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:48:43" (1/1) ... [2023-08-30 07:48:43,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:48:43" (1/1) ... [2023-08-30 07:48:43,841 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:48:43" (1/1) ... [2023-08-30 07:48:43,841 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:48:43" (1/1) ... [2023-08-30 07:48:43,853 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:48:43" (1/1) ... [2023-08-30 07:48:43,856 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:48:43" (1/1) ... [2023-08-30 07:48:43,858 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:48:43" (1/1) ... [2023-08-30 07:48:43,860 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:48:43" (1/1) ... [2023-08-30 07:48:43,863 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 07:48:43,864 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 07:48:43,864 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 07:48:43,864 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 07:48:43,865 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:48:43" (1/1) ... [2023-08-30 07:48:43,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 07:48:43,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 07:48:43,891 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 07:48:43,909 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 07:48:43,938 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 07:48:43,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-08-30 07:48:43,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 07:48:43,939 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-08-30 07:48:43,939 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 07:48:43,939 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 07:48:43,939 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 07:48:43,940 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 07:48:43,940 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 07:48:43,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 07:48:43,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 07:48:43,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 07:48:43,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-08-30 07:48:43,942 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 07:48:44,053 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 07:48:44,054 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 07:48:44,593 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 07:48:44,601 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 07:48:44,602 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-30 07:48:44,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 07:48:44 BoogieIcfgContainer [2023-08-30 07:48:44,604 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 07:48:44,606 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 07:48:44,606 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 07:48:44,609 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 07:48:44,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 07:48:43" (1/3) ... [2023-08-30 07:48:44,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@484f7bac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 07:48:44, skipping insertion in model container [2023-08-30 07:48:44,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:48:43" (2/3) ... [2023-08-30 07:48:44,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@484f7bac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 07:48:44, skipping insertion in model container [2023-08-30 07:48:44,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 07:48:44" (3/3) ... [2023-08-30 07:48:44,611 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-cond-4.wvr.c [2023-08-30 07:48:44,626 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 07:48:44,627 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2023-08-30 07:48:44,627 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 07:48:44,739 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 07:48:44,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 236 places, 250 transitions, 516 flow [2023-08-30 07:48:44,889 INFO L130 PetriNetUnfolder]: 21/248 cut-off events. [2023-08-30 07:48:44,890 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 07:48:44,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 257 conditions, 248 events. 21/248 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 531 event pairs, 0 based on Foata normal form. 0/199 useless extension candidates. Maximal degree in co-relation 153. Up to 2 conditions per place. [2023-08-30 07:48:44,902 INFO L82 GeneralOperation]: Start removeDead. Operand has 236 places, 250 transitions, 516 flow [2023-08-30 07:48:44,911 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 230 places, 244 transitions, 500 flow [2023-08-30 07:48:44,915 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 07:48:44,923 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 230 places, 244 transitions, 500 flow [2023-08-30 07:48:44,931 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 230 places, 244 transitions, 500 flow [2023-08-30 07:48:44,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 230 places, 244 transitions, 500 flow [2023-08-30 07:48:44,990 INFO L130 PetriNetUnfolder]: 21/244 cut-off events. [2023-08-30 07:48:44,990 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 07:48:44,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 253 conditions, 244 events. 21/244 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 522 event pairs, 0 based on Foata normal form. 0/196 useless extension candidates. Maximal degree in co-relation 153. Up to 2 conditions per place. [2023-08-30 07:48:45,002 INFO L119 LiptonReduction]: Number of co-enabled transitions 7800 [2023-08-30 07:49:24,999 INFO L134 LiptonReduction]: Checked pairs total: 7465 [2023-08-30 07:49:25,000 INFO L136 LiptonReduction]: Total number of compositions: 283 [2023-08-30 07:49:25,013 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 07:49:25,018 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;@3f692ee1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 07:49:25,019 INFO L358 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2023-08-30 07:49:25,022 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 07:49:25,022 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 07:49:25,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:49:25,023 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 07:49:25,024 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-08-30 07:49:25,028 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:49:25,028 INFO L85 PathProgramCache]: Analyzing trace with hash 32770, now seen corresponding path program 1 times [2023-08-30 07:49:25,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 07:49:25,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [632844774] [2023-08-30 07:49:25,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:49:25,041 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 07:49:25,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 07:49:25,043 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 07:49:25,045 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 07:49:25,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:49:25,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 07:49:25,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:49:25,392 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2023-08-30 07:49:25,393 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 2 case distinctions, treesize of input 14 treesize of output 29 [2023-08-30 07:49:25,438 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 07:49:25,438 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 07:49:25,439 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 07:49:25,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [632844774] [2023-08-30 07:49:25,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [632844774] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:49:25,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:49:25,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 07:49:25,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190641771] [2023-08-30 07:49:25,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:49:25,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 07:49:25,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 07:49:25,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 07:49:25,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 07:49:25,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 533 [2023-08-30 07:49:25,774 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 44 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 224.66666666666666) internal successors, (674), 3 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:49:25,774 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:49:25,774 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 533 [2023-08-30 07:49:25,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:49:26,993 INFO L130 PetriNetUnfolder]: 1912/2639 cut-off events. [2023-08-30 07:49:26,994 INFO L131 PetriNetUnfolder]: For 36/36 co-relation queries the response was YES. [2023-08-30 07:49:26,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5325 conditions, 2639 events. 1912/2639 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 13910 event pairs, 925 based on Foata normal form. 0/532 useless extension candidates. Maximal degree in co-relation 2325. Up to 1323 conditions per place. [2023-08-30 07:49:27,012 INFO L137 encePairwiseOnDemand]: 526/533 looper letters, 72 selfloop transitions, 2 changer transitions 0/76 dead transitions. [2023-08-30 07:49:27,014 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 76 transitions, 324 flow [2023-08-30 07:49:27,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 07:49:27,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 07:49:27,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 755 transitions. [2023-08-30 07:49:27,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4721701063164478 [2023-08-30 07:49:27,033 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 755 transitions. [2023-08-30 07:49:27,033 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 755 transitions. [2023-08-30 07:49:27,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:49:27,039 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 755 transitions. [2023-08-30 07:49:27,046 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 251.66666666666666) internal successors, (755), 3 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:49:27,056 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 533.0) internal successors, (2132), 4 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:49:27,058 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 533.0) internal successors, (2132), 4 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:49:27,060 INFO L175 Difference]: Start difference. First operand has 48 places, 44 transitions, 100 flow. Second operand 3 states and 755 transitions. [2023-08-30 07:49:27,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 76 transitions, 324 flow [2023-08-30 07:49:27,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 76 transitions, 308 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 07:49:27,073 INFO L231 Difference]: Finished difference. Result has 43 places, 41 transitions, 96 flow [2023-08-30 07:49:27,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=43, PETRI_TRANSITIONS=41} [2023-08-30 07:49:27,079 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -5 predicate places. [2023-08-30 07:49:27,080 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 41 transitions, 96 flow [2023-08-30 07:49:27,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 224.66666666666666) internal successors, (674), 3 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:49:27,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:49:27,082 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 07:49:27,093 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-08-30 07:49:27,289 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 07:49:27,289 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-08-30 07:49:27,290 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:49:27,290 INFO L85 PathProgramCache]: Analyzing trace with hash 32851, now seen corresponding path program 1 times [2023-08-30 07:49:27,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 07:49:27,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1682359653] [2023-08-30 07:49:27,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:49:27,291 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 07:49:27,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 07:49:27,293 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 07:49:27,294 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 07:49:27,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:49:27,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 07:49:27,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:49:27,372 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 07:49:27,372 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 07:49:27,374 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 07:49:27,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1682359653] [2023-08-30 07:49:27,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1682359653] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:49:27,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:49:27,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 07:49:27,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772442884] [2023-08-30 07:49:27,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:49:27,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 07:49:27,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 07:49:27,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 07:49:27,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 07:49:27,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 533 [2023-08-30 07:49:27,420 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 41 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 226.66666666666666) internal successors, (680), 3 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:49:27,420 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:49:27,420 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 533 [2023-08-30 07:49:27,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:49:27,981 INFO L130 PetriNetUnfolder]: 966/1332 cut-off events. [2023-08-30 07:49:27,982 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 07:49:27,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2674 conditions, 1332 events. 966/1332 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 6146 event pairs, 464 based on Foata normal form. 0/263 useless extension candidates. Maximal degree in co-relation 2661. Up to 1326 conditions per place. [2023-08-30 07:49:27,988 INFO L137 encePairwiseOnDemand]: 528/533 looper letters, 38 selfloop transitions, 2 changer transitions 0/42 dead transitions. [2023-08-30 07:49:27,989 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 42 transitions, 178 flow [2023-08-30 07:49:27,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 07:49:27,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 07:49:27,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 721 transitions. [2023-08-30 07:49:27,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4509068167604753 [2023-08-30 07:49:27,992 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 721 transitions. [2023-08-30 07:49:27,992 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 721 transitions. [2023-08-30 07:49:27,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:49:27,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 721 transitions. [2023-08-30 07:49:27,995 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 240.33333333333334) internal successors, (721), 3 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:49:27,998 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 533.0) internal successors, (2132), 4 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:49:27,999 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 533.0) internal successors, (2132), 4 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:49:27,999 INFO L175 Difference]: Start difference. First operand has 43 places, 41 transitions, 96 flow. Second operand 3 states and 721 transitions. [2023-08-30 07:49:27,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 42 transitions, 178 flow [2023-08-30 07:49:28,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 42 transitions, 176 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 07:49:28,002 INFO L231 Difference]: Finished difference. Result has 45 places, 41 transitions, 106 flow [2023-08-30 07:49:28,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=45, PETRI_TRANSITIONS=41} [2023-08-30 07:49:28,003 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -3 predicate places. [2023-08-30 07:49:28,003 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 41 transitions, 106 flow [2023-08-30 07:49:28,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 226.66666666666666) internal successors, (680), 3 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:49:28,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:49:28,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 07:49:28,015 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 07:49:28,213 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 07:49:28,213 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-08-30 07:49:28,214 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:49:28,214 INFO L85 PathProgramCache]: Analyzing trace with hash 32769, now seen corresponding path program 1 times [2023-08-30 07:49:28,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 07:49:28,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [632363655] [2023-08-30 07:49:28,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:49:28,215 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 07:49:28,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 07:49:28,218 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 07:49:28,220 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 07:49:28,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:49:28,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 07:49:28,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:49:28,296 INFO L321 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2023-08-30 07:49:28,296 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 2 case distinctions, treesize of input 12 treesize of output 33 [2023-08-30 07:49:28,306 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 07:49:28,306 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 07:49:28,307 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 07:49:28,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [632363655] [2023-08-30 07:49:28,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [632363655] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:49:28,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:49:28,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 07:49:28,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010575252] [2023-08-30 07:49:28,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:49:28,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 07:49:28,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 07:49:28,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 07:49:28,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 07:49:28,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 533 [2023-08-30 07:49:28,425 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 41 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 224.66666666666666) internal successors, (674), 3 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:49:28,425 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:49:28,425 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 533 [2023-08-30 07:49:28,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:49:28,908 INFO L130 PetriNetUnfolder]: 966/1330 cut-off events. [2023-08-30 07:49:28,908 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 07:49:28,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2676 conditions, 1330 events. 966/1330 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 6258 event pairs, 464 based on Foata normal form. 2/264 useless extension candidates. Maximal degree in co-relation 2662. Up to 1325 conditions per place. [2023-08-30 07:49:28,914 INFO L137 encePairwiseOnDemand]: 531/533 looper letters, 37 selfloop transitions, 1 changer transitions 0/40 dead transitions. [2023-08-30 07:49:28,915 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 40 transitions, 180 flow [2023-08-30 07:49:28,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 07:49:28,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 07:49:28,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 710 transitions. [2023-08-30 07:49:28,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4440275171982489 [2023-08-30 07:49:28,918 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 710 transitions. [2023-08-30 07:49:28,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 710 transitions. [2023-08-30 07:49:28,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:49:28,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 710 transitions. [2023-08-30 07:49:28,920 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 236.66666666666666) internal successors, (710), 3 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:49:28,923 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 533.0) internal successors, (2132), 4 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:49:28,924 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 533.0) internal successors, (2132), 4 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:49:28,924 INFO L175 Difference]: Start difference. First operand has 45 places, 41 transitions, 106 flow. Second operand 3 states and 710 transitions. [2023-08-30 07:49:28,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 40 transitions, 180 flow [2023-08-30 07:49:28,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 40 transitions, 174 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-30 07:49:28,926 INFO L231 Difference]: Finished difference. Result has 44 places, 40 transitions, 100 flow [2023-08-30 07:49:28,926 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=44, PETRI_TRANSITIONS=40} [2023-08-30 07:49:28,927 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -4 predicate places. [2023-08-30 07:49:28,927 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 40 transitions, 100 flow [2023-08-30 07:49:28,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 224.66666666666666) internal successors, (674), 3 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:49:28,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:49:28,928 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 07:49:28,945 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 07:49:29,137 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 07:49:29,137 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-08-30 07:49:29,138 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:49:29,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1019190, now seen corresponding path program 1 times [2023-08-30 07:49:29,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 07:49:29,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1984997493] [2023-08-30 07:49:29,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:49:29,138 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 07:49:29,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 07:49:29,144 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 07:49:29,146 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 07:49:29,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:49:29,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-30 07:49:29,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:49:29,272 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2023-08-30 07:49:29,272 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 2 case distinctions, treesize of input 14 treesize of output 29 [2023-08-30 07:49:29,331 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 07:49:29,331 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 07:49:29,532 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 07:49:29,532 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 07:49:29,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1984997493] [2023-08-30 07:49:29,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1984997493] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 07:49:29,532 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 07:49:29,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-08-30 07:49:29,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248204232] [2023-08-30 07:49:29,533 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 07:49:29,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 07:49:29,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 07:49:29,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 07:49:29,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-30 07:49:30,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 533 [2023-08-30 07:49:30,633 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 40 transitions, 100 flow. Second operand has 6 states, 6 states have (on average 220.0) internal successors, (1320), 6 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:49:30,634 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:49:30,634 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 533 [2023-08-30 07:49:30,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:49:31,775 INFO L130 PetriNetUnfolder]: 1918/2646 cut-off events. [2023-08-30 07:49:31,775 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 07:49:31,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5318 conditions, 2646 events. 1918/2646 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 13862 event pairs, 925 based on Foata normal form. 0/539 useless extension candidates. Maximal degree in co-relation 5309. Up to 1322 conditions per place. [2023-08-30 07:49:31,789 INFO L137 encePairwiseOnDemand]: 527/533 looper letters, 70 selfloop transitions, 11 changer transitions 0/83 dead transitions. [2023-08-30 07:49:31,790 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 83 transitions, 376 flow [2023-08-30 07:49:31,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 07:49:31,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 07:49:31,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1398 transitions. [2023-08-30 07:49:31,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4371482176360225 [2023-08-30 07:49:31,795 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1398 transitions. [2023-08-30 07:49:31,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1398 transitions. [2023-08-30 07:49:31,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:49:31,797 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1398 transitions. [2023-08-30 07:49:31,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 233.0) internal successors, (1398), 6 states have internal predecessors, (1398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:49:31,804 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 533.0) internal successors, (3731), 7 states have internal predecessors, (3731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:49:31,806 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 533.0) internal successors, (3731), 7 states have internal predecessors, (3731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:49:31,806 INFO L175 Difference]: Start difference. First operand has 44 places, 40 transitions, 100 flow. Second operand 6 states and 1398 transitions. [2023-08-30 07:49:31,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 83 transitions, 376 flow [2023-08-30 07:49:31,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 83 transitions, 375 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 07:49:31,810 INFO L231 Difference]: Finished difference. Result has 52 places, 49 transitions, 197 flow [2023-08-30 07:49:31,810 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=197, PETRI_PLACES=52, PETRI_TRANSITIONS=49} [2023-08-30 07:49:31,812 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 4 predicate places. [2023-08-30 07:49:31,812 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 49 transitions, 197 flow [2023-08-30 07:49:31,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 220.0) internal successors, (1320), 6 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:49:31,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:49:31,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 07:49:31,827 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 07:49:32,022 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 07:49:32,022 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-08-30 07:49:32,023 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:49:32,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1019271, now seen corresponding path program 1 times [2023-08-30 07:49:32,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 07:49:32,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1252247188] [2023-08-30 07:49:32,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:49:32,024 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 07:49:32,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 07:49:32,025 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 07:49:32,030 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 07:49:32,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:49:32,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 07:49:32,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:49:32,131 INFO L321 Elim1Store]: treesize reduction 50, result has 23.1 percent of original size [2023-08-30 07:49:32,136 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 3 case distinctions, treesize of input 22 treesize of output 29 [2023-08-30 07:49:32,193 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 07:49:32,193 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 07:49:32,193 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 07:49:32,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1252247188] [2023-08-30 07:49:32,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1252247188] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:49:32,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:49:32,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 07:49:32,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831983726] [2023-08-30 07:49:32,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:49:32,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 07:49:32,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 07:49:32,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 07:49:32,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 07:49:32,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 533 [2023-08-30 07:49:32,373 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 49 transitions, 197 flow. Second operand has 3 states, 3 states have (on average 225.0) internal successors, (675), 3 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:49:32,373 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:49:32,373 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 533 [2023-08-30 07:49:32,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:49:32,978 INFO L130 PetriNetUnfolder]: 1459/2045 cut-off events. [2023-08-30 07:49:32,979 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2023-08-30 07:49:32,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4145 conditions, 2045 events. 1459/2045 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 10602 event pairs, 694 based on Foata normal form. 0/459 useless extension candidates. Maximal degree in co-relation 4131. Up to 2035 conditions per place. [2023-08-30 07:49:32,988 INFO L137 encePairwiseOnDemand]: 530/533 looper letters, 42 selfloop transitions, 1 changer transitions 0/45 dead transitions. [2023-08-30 07:49:32,988 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 45 transitions, 257 flow [2023-08-30 07:49:32,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 07:49:32,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 07:49:32,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 709 transitions. [2023-08-30 07:49:32,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4434021263289556 [2023-08-30 07:49:32,991 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 709 transitions. [2023-08-30 07:49:32,992 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 709 transitions. [2023-08-30 07:49:32,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:49:32,992 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 709 transitions. [2023-08-30 07:49:32,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 236.33333333333334) internal successors, (709), 3 states have internal predecessors, (709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:49:32,996 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 533.0) internal successors, (2132), 4 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:49:32,997 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 533.0) internal successors, (2132), 4 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:49:32,998 INFO L175 Difference]: Start difference. First operand has 52 places, 49 transitions, 197 flow. Second operand 3 states and 709 transitions. [2023-08-30 07:49:32,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 45 transitions, 257 flow [2023-08-30 07:49:33,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 45 transitions, 239 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-08-30 07:49:33,002 INFO L231 Difference]: Finished difference. Result has 51 places, 45 transitions, 155 flow [2023-08-30 07:49:33,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=155, PETRI_PLACES=51, PETRI_TRANSITIONS=45} [2023-08-30 07:49:33,004 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 3 predicate places. [2023-08-30 07:49:33,005 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 45 transitions, 155 flow [2023-08-30 07:49:33,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 225.0) internal successors, (675), 3 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:49:33,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:49:33,006 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 07:49:33,015 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 07:49:33,214 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 07:49:33,215 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-08-30 07:49:33,215 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:49:33,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1019272, now seen corresponding path program 1 times [2023-08-30 07:49:33,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 07:49:33,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1661895445] [2023-08-30 07:49:33,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:49:33,216 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 07:49:33,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 07:49:33,217 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 07:49:33,219 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 07:49:33,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:49:33,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-30 07:49:33,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:49:33,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 07:49:33,336 INFO L321 Elim1Store]: treesize reduction 24, result has 44.2 percent of original size [2023-08-30 07:49:33,336 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 14 treesize of output 26 [2023-08-30 07:49:33,345 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 10 treesize of output 8 [2023-08-30 07:49:33,421 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 07:49:33,422 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 07:49:33,422 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 07:49:33,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1661895445] [2023-08-30 07:49:33,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1661895445] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:49:33,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:49:33,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 07:49:33,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271016392] [2023-08-30 07:49:33,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:49:33,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 07:49:33,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 07:49:33,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 07:49:33,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 07:49:33,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 533 [2023-08-30 07:49:33,646 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 45 transitions, 155 flow. Second operand has 3 states, 3 states have (on average 225.0) internal successors, (675), 3 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:49:33,646 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:49:33,646 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 533 [2023-08-30 07:49:33,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:49:34,017 INFO L130 PetriNetUnfolder]: 981/1425 cut-off events. [2023-08-30 07:49:34,017 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2023-08-30 07:49:34,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2888 conditions, 1425 events. 981/1425 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 7335 event pairs, 460 based on Foata normal form. 0/391 useless extension candidates. Maximal degree in co-relation 2873. Up to 1415 conditions per place. [2023-08-30 07:49:34,025 INFO L137 encePairwiseOnDemand]: 530/533 looper letters, 38 selfloop transitions, 1 changer transitions 0/41 dead transitions. [2023-08-30 07:49:34,025 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 41 transitions, 211 flow [2023-08-30 07:49:34,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 07:49:34,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 07:49:34,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 707 transitions. [2023-08-30 07:49:34,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.442151344590369 [2023-08-30 07:49:34,028 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 707 transitions. [2023-08-30 07:49:34,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 707 transitions. [2023-08-30 07:49:34,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:49:34,029 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 707 transitions. [2023-08-30 07:49:34,030 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 235.66666666666666) internal successors, (707), 3 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:49:34,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 533.0) internal successors, (2132), 4 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:49:34,033 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 533.0) internal successors, (2132), 4 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:49:34,033 INFO L175 Difference]: Start difference. First operand has 51 places, 45 transitions, 155 flow. Second operand 3 states and 707 transitions. [2023-08-30 07:49:34,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 41 transitions, 211 flow [2023-08-30 07:49:34,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 41 transitions, 210 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 07:49:34,036 INFO L231 Difference]: Finished difference. Result has 50 places, 41 transitions, 134 flow [2023-08-30 07:49:34,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=50, PETRI_TRANSITIONS=41} [2023-08-30 07:49:34,038 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 2 predicate places. [2023-08-30 07:49:34,038 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 41 transitions, 134 flow [2023-08-30 07:49:34,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 225.0) internal successors, (675), 3 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:49:34,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:49:34,038 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 07:49:34,047 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-08-30 07:49:34,239 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 07:49:34,239 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-08-30 07:49:34,239 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:49:34,239 INFO L85 PathProgramCache]: Analyzing trace with hash 979544733, now seen corresponding path program 1 times [2023-08-30 07:49:34,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 07:49:34,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1814290192] [2023-08-30 07:49:34,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:49:34,240 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 07:49:34,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 07:49:34,241 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 07:49:34,242 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 07:49:34,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:49:34,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 07:49:34,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:49:34,347 INFO L321 Elim1Store]: treesize reduction 43, result has 33.8 percent of original size [2023-08-30 07:49:34,348 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 2 case distinctions, treesize of input 12 treesize of output 29 [2023-08-30 07:49:34,370 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 07:49:34,370 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 07:49:34,371 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 07:49:34,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1814290192] [2023-08-30 07:49:34,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1814290192] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:49:34,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:49:34,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 07:49:34,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099780525] [2023-08-30 07:49:34,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:49:34,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 07:49:34,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 07:49:34,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 07:49:34,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 07:49:34,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 533 [2023-08-30 07:49:34,504 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 41 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 222.66666666666666) internal successors, (668), 3 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:49:34,504 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:49:34,504 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 533 [2023-08-30 07:49:34,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:49:34,904 INFO L130 PetriNetUnfolder]: 915/1321 cut-off events. [2023-08-30 07:49:34,904 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2023-08-30 07:49:34,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2681 conditions, 1321 events. 915/1321 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 6693 event pairs, 428 based on Foata normal form. 0/385 useless extension candidates. Maximal degree in co-relation 2665. Up to 1311 conditions per place. [2023-08-30 07:49:34,910 INFO L137 encePairwiseOnDemand]: 530/533 looper letters, 36 selfloop transitions, 1 changer transitions 0/39 dead transitions. [2023-08-30 07:49:34,911 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 39 transitions, 204 flow [2023-08-30 07:49:34,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 07:49:34,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 07:49:34,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 696 transitions. [2023-08-30 07:49:34,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4352720450281426 [2023-08-30 07:49:34,915 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 696 transitions. [2023-08-30 07:49:34,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 696 transitions. [2023-08-30 07:49:34,915 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:49:34,915 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 696 transitions. [2023-08-30 07:49:34,917 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 232.0) internal successors, (696), 3 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:49:34,919 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 533.0) internal successors, (2132), 4 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:49:34,919 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 533.0) internal successors, (2132), 4 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:49:34,920 INFO L175 Difference]: Start difference. First operand has 50 places, 41 transitions, 134 flow. Second operand 3 states and 696 transitions. [2023-08-30 07:49:34,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 39 transitions, 204 flow [2023-08-30 07:49:34,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 39 transitions, 203 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 07:49:34,921 INFO L231 Difference]: Finished difference. Result has 49 places, 39 transitions, 131 flow [2023-08-30 07:49:34,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=49, PETRI_TRANSITIONS=39} [2023-08-30 07:49:34,922 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 1 predicate places. [2023-08-30 07:49:34,922 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 39 transitions, 131 flow [2023-08-30 07:49:34,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 222.66666666666666) internal successors, (668), 3 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:49:34,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:49:34,923 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 07:49:34,937 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 (8)] Forceful destruction successful, exit code 0 [2023-08-30 07:49:35,132 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 07:49:35,133 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-08-30 07:49:35,133 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:49:35,133 INFO L85 PathProgramCache]: Analyzing trace with hash 979544735, now seen corresponding path program 1 times [2023-08-30 07:49:35,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 07:49:35,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [494487912] [2023-08-30 07:49:35,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:49:35,134 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 07:49:35,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 07:49:35,135 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 07:49:35,136 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 07:49:35,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:49:35,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-30 07:49:35,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:49:35,277 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2023-08-30 07:49:35,277 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 2 case distinctions, treesize of input 14 treesize of output 29 [2023-08-30 07:49:35,447 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 07:49:35,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 07:49:35,628 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 07:49:35,628 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 07:49:35,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [494487912] [2023-08-30 07:49:35,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [494487912] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 07:49:35,628 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 07:49:35,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2023-08-30 07:49:35,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506625278] [2023-08-30 07:49:35,629 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 07:49:35,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 07:49:35,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 07:49:35,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 07:49:35,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-08-30 07:49:36,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 533 [2023-08-30 07:49:36,559 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 39 transitions, 131 flow. Second operand has 8 states, 8 states have (on average 216.25) internal successors, (1730), 8 states have internal predecessors, (1730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:49:36,559 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:49:36,559 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 533 [2023-08-30 07:49:36,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:49:37,353 INFO L130 PetriNetUnfolder]: 832/1200 cut-off events. [2023-08-30 07:49:37,354 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2023-08-30 07:49:37,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2439 conditions, 1200 events. 832/1200 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 6018 event pairs, 395 based on Foata normal form. 0/382 useless extension candidates. Maximal degree in co-relation 2422. Up to 600 conditions per place. [2023-08-30 07:49:37,360 INFO L137 encePairwiseOnDemand]: 529/533 looper letters, 58 selfloop transitions, 3 changer transitions 0/63 dead transitions. [2023-08-30 07:49:37,360 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 63 transitions, 311 flow [2023-08-30 07:49:37,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 07:49:37,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 07:49:37,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1136 transitions. [2023-08-30 07:49:37,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42626641651031894 [2023-08-30 07:49:37,364 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1136 transitions. [2023-08-30 07:49:37,364 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1136 transitions. [2023-08-30 07:49:37,365 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:49:37,365 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1136 transitions. [2023-08-30 07:49:37,367 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 227.2) internal successors, (1136), 5 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:49:37,370 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 533.0) internal successors, (3198), 6 states have internal predecessors, (3198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:49:37,371 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 533.0) internal successors, (3198), 6 states have internal predecessors, (3198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:49:37,371 INFO L175 Difference]: Start difference. First operand has 49 places, 39 transitions, 131 flow. Second operand 5 states and 1136 transitions. [2023-08-30 07:49:37,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 63 transitions, 311 flow [2023-08-30 07:49:37,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 63 transitions, 310 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 07:49:37,373 INFO L231 Difference]: Finished difference. Result has 50 places, 37 transitions, 132 flow [2023-08-30 07:49:37,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=132, PETRI_PLACES=50, PETRI_TRANSITIONS=37} [2023-08-30 07:49:37,374 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 2 predicate places. [2023-08-30 07:49:37,374 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 37 transitions, 132 flow [2023-08-30 07:49:37,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 216.25) internal successors, (1730), 8 states have internal predecessors, (1730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:49:37,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:49:37,375 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 07:49:37,386 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 07:49:37,584 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 07:49:37,585 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-08-30 07:49:37,585 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:49:37,585 INFO L85 PathProgramCache]: Analyzing trace with hash 301214978, now seen corresponding path program 2 times [2023-08-30 07:49:37,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 07:49:37,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [848916900] [2023-08-30 07:49:37,586 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 07:49:37,586 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 07:49:37,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 07:49:37,587 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 07:49:37,588 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 07:49:37,658 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 07:49:37,658 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 07:49:37,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-30 07:49:37,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:49:37,721 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2023-08-30 07:49:37,722 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 2 case distinctions, treesize of input 14 treesize of output 29 [2023-08-30 07:49:37,857 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:49:37,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 07:49:38,368 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:49:38,368 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 07:49:38,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [848916900] [2023-08-30 07:49:38,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [848916900] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 07:49:38,369 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 07:49:38,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2023-08-30 07:49:38,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050695883] [2023-08-30 07:49:38,369 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 07:49:38,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 07:49:38,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 07:49:38,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 07:49:38,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-08-30 07:49:41,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 533 [2023-08-30 07:49:41,790 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 37 transitions, 132 flow. Second operand has 12 states, 12 states have (on average 221.0) internal successors, (2652), 12 states have internal predecessors, (2652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:49:41,790 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:49:41,790 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 533 [2023-08-30 07:49:41,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:49:46,922 INFO L130 PetriNetUnfolder]: 3673/5314 cut-off events. [2023-08-30 07:49:46,922 INFO L131 PetriNetUnfolder]: For 42/42 co-relation queries the response was YES. [2023-08-30 07:49:46,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10694 conditions, 5314 events. 3673/5314 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 31457 event pairs, 1774 based on Foata normal form. 6/1709 useless extension candidates. Maximal degree in co-relation 10676. Up to 600 conditions per place. [2023-08-30 07:49:46,944 INFO L137 encePairwiseOnDemand]: 529/533 looper letters, 236 selfloop transitions, 12 changer transitions 0/250 dead transitions. [2023-08-30 07:49:46,945 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 250 transitions, 1140 flow [2023-08-30 07:49:46,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 07:49:46,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 07:49:46,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2894 transitions. [2023-08-30 07:49:46,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4524702939337086 [2023-08-30 07:49:46,952 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2894 transitions. [2023-08-30 07:49:46,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2894 transitions. [2023-08-30 07:49:46,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:49:46,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2894 transitions. [2023-08-30 07:49:46,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 241.16666666666666) internal successors, (2894), 12 states have internal predecessors, (2894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:49:46,966 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 533.0) internal successors, (6929), 13 states have internal predecessors, (6929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:49:46,968 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 533.0) internal successors, (6929), 13 states have internal predecessors, (6929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:49:46,968 INFO L175 Difference]: Start difference. First operand has 50 places, 37 transitions, 132 flow. Second operand 12 states and 2894 transitions. [2023-08-30 07:49:46,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 250 transitions, 1140 flow [2023-08-30 07:49:46,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 250 transitions, 1135 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 07:49:46,972 INFO L231 Difference]: Finished difference. Result has 65 places, 44 transitions, 225 flow [2023-08-30 07:49:46,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=225, PETRI_PLACES=65, PETRI_TRANSITIONS=44} [2023-08-30 07:49:46,973 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 17 predicate places. [2023-08-30 07:49:46,973 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 44 transitions, 225 flow [2023-08-30 07:49:46,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 221.0) internal successors, (2652), 12 states have internal predecessors, (2652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:49:46,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:49:46,974 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 07:49:46,985 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 07:49:47,183 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 07:49:47,184 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-08-30 07:49:47,184 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:49:47,184 INFO L85 PathProgramCache]: Analyzing trace with hash 301106743, now seen corresponding path program 1 times [2023-08-30 07:49:47,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 07:49:47,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1357502149] [2023-08-30 07:49:47,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:49:47,185 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 07:49:47,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 07:49:47,186 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 07:49:47,189 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 07:49:47,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:49:47,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 07:49:47,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:49:47,277 INFO L321 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2023-08-30 07:49:47,278 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 2 case distinctions, treesize of input 12 treesize of output 33 [2023-08-30 07:49:47,296 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 07:49:47,296 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 07:49:47,296 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 07:49:47,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1357502149] [2023-08-30 07:49:47,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1357502149] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:49:47,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:49:47,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 07:49:47,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361327831] [2023-08-30 07:49:47,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:49:47,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 07:49:47,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 07:49:47,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 07:49:47,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 07:49:47,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 533 [2023-08-30 07:49:47,476 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 44 transitions, 225 flow. Second operand has 4 states, 4 states have (on average 207.25) internal successors, (829), 4 states have internal predecessors, (829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:49:47,477 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:49:47,477 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 533 [2023-08-30 07:49:47,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:49:48,148 INFO L130 PetriNetUnfolder]: 2162/3173 cut-off events. [2023-08-30 07:49:48,148 INFO L131 PetriNetUnfolder]: For 56/56 co-relation queries the response was YES. [2023-08-30 07:49:48,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6457 conditions, 3173 events. 2162/3173 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 17336 event pairs, 990 based on Foata normal form. 0/1157 useless extension candidates. Maximal degree in co-relation 6432. Up to 3124 conditions per place. [2023-08-30 07:49:48,160 INFO L137 encePairwiseOnDemand]: 526/533 looper letters, 32 selfloop transitions, 5 changer transitions 0/39 dead transitions. [2023-08-30 07:49:48,160 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 39 transitions, 289 flow [2023-08-30 07:49:48,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 07:49:48,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 07:49:48,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 853 transitions. [2023-08-30 07:49:48,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.400093808630394 [2023-08-30 07:49:48,163 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 853 transitions. [2023-08-30 07:49:48,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 853 transitions. [2023-08-30 07:49:48,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:49:48,164 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 853 transitions. [2023-08-30 07:49:48,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 213.25) internal successors, (853), 4 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:49:48,168 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 533.0) internal successors, (2665), 5 states have internal predecessors, (2665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:49:48,169 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 533.0) internal successors, (2665), 5 states have internal predecessors, (2665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:49:48,169 INFO L175 Difference]: Start difference. First operand has 65 places, 44 transitions, 225 flow. Second operand 4 states and 853 transitions. [2023-08-30 07:49:48,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 39 transitions, 289 flow [2023-08-30 07:49:48,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 39 transitions, 264 flow, removed 7 selfloop flow, removed 4 redundant places. [2023-08-30 07:49:48,171 INFO L231 Difference]: Finished difference. Result has 59 places, 39 transitions, 200 flow [2023-08-30 07:49:48,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=200, PETRI_PLACES=59, PETRI_TRANSITIONS=39} [2023-08-30 07:49:48,172 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 11 predicate places. [2023-08-30 07:49:48,172 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 39 transitions, 200 flow [2023-08-30 07:49:48,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 207.25) internal successors, (829), 4 states have internal predecessors, (829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:49:48,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:49:48,173 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 07:49:48,182 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 07:49:48,381 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 07:49:48,381 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-08-30 07:49:48,382 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:49:48,382 INFO L85 PathProgramCache]: Analyzing trace with hash 301106744, now seen corresponding path program 1 times [2023-08-30 07:49:48,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 07:49:48,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1254961230] [2023-08-30 07:49:48,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:49:48,382 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 07:49:48,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 07:49:48,384 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 07:49:48,386 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 07:49:48,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:49:48,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 07:49:48,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:49:48,509 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 07:49:48,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 07:49:48,612 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 35 treesize of output 31 [2023-08-30 07:49:48,690 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 07:49:48,690 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 07:49:48,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1254961230] [2023-08-30 07:49:48,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1254961230] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 07:49:48,690 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 07:49:48,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2023-08-30 07:49:48,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885657562] [2023-08-30 07:49:48,691 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 07:49:48,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 07:49:48,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 07:49:48,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 07:49:48,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-30 07:49:50,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 533 [2023-08-30 07:49:50,492 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 39 transitions, 200 flow. Second operand has 8 states, 8 states have (on average 217.25) internal successors, (1738), 8 states have internal predecessors, (1738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:49:50,493 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:49:50,493 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 533 [2023-08-30 07:49:50,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:49:52,077 INFO L130 PetriNetUnfolder]: 2639/4055 cut-off events. [2023-08-30 07:49:52,077 INFO L131 PetriNetUnfolder]: For 154/154 co-relation queries the response was YES. [2023-08-30 07:49:52,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8232 conditions, 4055 events. 2639/4055 cut-off events. For 154/154 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 23787 event pairs, 920 based on Foata normal form. 0/1595 useless extension candidates. Maximal degree in co-relation 8206. Up to 2602 conditions per place. [2023-08-30 07:49:52,092 INFO L137 encePairwiseOnDemand]: 528/533 looper letters, 65 selfloop transitions, 10 changer transitions 0/77 dead transitions. [2023-08-30 07:49:52,093 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 77 transitions, 441 flow [2023-08-30 07:49:52,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 07:49:52,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 07:49:52,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1578 transitions. [2023-08-30 07:49:52,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4229429107477888 [2023-08-30 07:49:52,097 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1578 transitions. [2023-08-30 07:49:52,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1578 transitions. [2023-08-30 07:49:52,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:49:52,098 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1578 transitions. [2023-08-30 07:49:52,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 225.42857142857142) internal successors, (1578), 7 states have internal predecessors, (1578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:49:52,104 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 533.0) internal successors, (4264), 8 states have internal predecessors, (4264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:49:52,105 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 533.0) internal successors, (4264), 8 states have internal predecessors, (4264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:49:52,105 INFO L175 Difference]: Start difference. First operand has 59 places, 39 transitions, 200 flow. Second operand 7 states and 1578 transitions. [2023-08-30 07:49:52,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 77 transitions, 441 flow [2023-08-30 07:49:52,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 77 transitions, 434 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 07:49:52,108 INFO L231 Difference]: Finished difference. Result has 65 places, 42 transitions, 240 flow [2023-08-30 07:49:52,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=240, PETRI_PLACES=65, PETRI_TRANSITIONS=42} [2023-08-30 07:49:52,109 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 17 predicate places. [2023-08-30 07:49:52,109 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 42 transitions, 240 flow [2023-08-30 07:49:52,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 217.25) internal successors, (1738), 8 states have internal predecessors, (1738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:49:52,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:49:52,110 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 07:49:52,121 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 07:49:52,319 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 07:49:52,319 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-08-30 07:49:52,319 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:49:52,319 INFO L85 PathProgramCache]: Analyzing trace with hash 744375485, now seen corresponding path program 1 times [2023-08-30 07:49:52,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 07:49:52,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1049401158] [2023-08-30 07:49:52,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:49:52,320 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 07:49:52,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 07:49:52,321 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 07:49:52,324 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 07:49:52,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:49:52,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 21 conjunts are in the unsatisfiable core [2023-08-30 07:49:52,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:49:52,466 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2023-08-30 07:49:52,467 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 2 case distinctions, treesize of input 14 treesize of output 29 [2023-08-30 07:49:52,605 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 07:49:52,606 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 07:49:53,366 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 07:49:53,367 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 07:49:53,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1049401158] [2023-08-30 07:49:53,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1049401158] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 07:49:53,367 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 07:49:53,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2023-08-30 07:49:53,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135084106] [2023-08-30 07:49:53,367 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 07:49:53,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 07:49:53,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 07:49:53,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 07:49:53,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-08-30 07:50:03,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 533 [2023-08-30 07:50:03,159 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 42 transitions, 240 flow. Second operand has 8 states, 8 states have (on average 216.5) internal successors, (1732), 8 states have internal predecessors, (1732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:50:03,159 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:50:03,159 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 533 [2023-08-30 07:50:03,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:50:06,956 INFO L130 PetriNetUnfolder]: 1807/2905 cut-off events. [2023-08-30 07:50:06,956 INFO L131 PetriNetUnfolder]: For 812/812 co-relation queries the response was YES. [2023-08-30 07:50:06,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6619 conditions, 2905 events. 1807/2905 cut-off events. For 812/812 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 17709 event pairs, 1033 based on Foata normal form. 21/1707 useless extension candidates. Maximal degree in co-relation 6591. Up to 2539 conditions per place. [2023-08-30 07:50:06,968 INFO L137 encePairwiseOnDemand]: 521/533 looper letters, 54 selfloop transitions, 11 changer transitions 0/67 dead transitions. [2023-08-30 07:50:06,968 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 67 transitions, 435 flow [2023-08-30 07:50:06,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 07:50:06,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 07:50:06,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2006 transitions. [2023-08-30 07:50:06,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4181780279341255 [2023-08-30 07:50:06,975 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2006 transitions. [2023-08-30 07:50:06,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2006 transitions. [2023-08-30 07:50:06,976 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:50:06,976 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2006 transitions. [2023-08-30 07:50:06,980 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 222.88888888888889) internal successors, (2006), 9 states have internal predecessors, (2006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:50:06,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 533.0) internal successors, (5330), 10 states have internal predecessors, (5330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:50:06,986 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 533.0) internal successors, (5330), 10 states have internal predecessors, (5330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:50:06,986 INFO L175 Difference]: Start difference. First operand has 65 places, 42 transitions, 240 flow. Second operand 9 states and 2006 transitions. [2023-08-30 07:50:06,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 67 transitions, 435 flow [2023-08-30 07:50:06,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 67 transitions, 419 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-08-30 07:50:06,989 INFO L231 Difference]: Finished difference. Result has 72 places, 42 transitions, 281 flow [2023-08-30 07:50:06,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=281, PETRI_PLACES=72, PETRI_TRANSITIONS=42} [2023-08-30 07:50:06,990 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 24 predicate places. [2023-08-30 07:50:06,990 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 42 transitions, 281 flow [2023-08-30 07:50:06,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 216.5) internal successors, (1732), 8 states have internal predecessors, (1732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:50:06,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:50:06,991 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2023-08-30 07:50:07,001 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 07:50:07,201 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 07:50:07,201 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-08-30 07:50:07,201 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:50:07,201 INFO L85 PathProgramCache]: Analyzing trace with hash 2014715529, now seen corresponding path program 2 times [2023-08-30 07:50:07,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 07:50:07,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [224907452] [2023-08-30 07:50:07,202 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 07:50:07,202 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 07:50:07,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 07:50:07,203 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 07:50:07,204 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 07:50:07,280 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 07:50:07,280 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 07:50:07,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-30 07:50:07,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:50:07,337 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2023-08-30 07:50:07,338 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 2 case distinctions, treesize of input 14 treesize of output 29 [2023-08-30 07:50:07,453 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-08-30 07:50:07,454 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 07:50:07,454 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 07:50:07,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [224907452] [2023-08-30 07:50:07,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [224907452] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:50:07,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:50:07,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 07:50:07,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651147353] [2023-08-30 07:50:07,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:50:07,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 07:50:07,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 07:50:07,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 07:50:07,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 07:50:07,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 533 [2023-08-30 07:50:07,780 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 42 transitions, 281 flow. Second operand has 4 states, 4 states have (on average 222.5) internal successors, (890), 4 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:50:07,780 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:50:07,780 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 533 [2023-08-30 07:50:07,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:50:08,229 INFO L130 PetriNetUnfolder]: 533/995 cut-off events. [2023-08-30 07:50:08,229 INFO L131 PetriNetUnfolder]: For 961/961 co-relation queries the response was YES. [2023-08-30 07:50:08,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2307 conditions, 995 events. 533/995 cut-off events. For 961/961 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 5585 event pairs, 279 based on Foata normal form. 144/896 useless extension candidates. Maximal degree in co-relation 2277. Up to 946 conditions per place. [2023-08-30 07:50:08,232 INFO L137 encePairwiseOnDemand]: 523/533 looper letters, 26 selfloop transitions, 6 changer transitions 0/34 dead transitions. [2023-08-30 07:50:08,232 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 34 transitions, 293 flow [2023-08-30 07:50:08,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 07:50:08,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 07:50:08,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 908 transitions. [2023-08-30 07:50:08,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425891181988743 [2023-08-30 07:50:08,239 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 908 transitions. [2023-08-30 07:50:08,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 908 transitions. [2023-08-30 07:50:08,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:50:08,240 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 908 transitions. [2023-08-30 07:50:08,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:50:08,244 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 533.0) internal successors, (2665), 5 states have internal predecessors, (2665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:50:08,244 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 533.0) internal successors, (2665), 5 states have internal predecessors, (2665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:50:08,245 INFO L175 Difference]: Start difference. First operand has 72 places, 42 transitions, 281 flow. Second operand 4 states and 908 transitions. [2023-08-30 07:50:08,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 34 transitions, 293 flow [2023-08-30 07:50:08,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 34 transitions, 246 flow, removed 6 selfloop flow, removed 12 redundant places. [2023-08-30 07:50:08,247 INFO L231 Difference]: Finished difference. Result has 55 places, 34 transitions, 194 flow [2023-08-30 07:50:08,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=194, PETRI_PLACES=55, PETRI_TRANSITIONS=34} [2023-08-30 07:50:08,248 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 7 predicate places. [2023-08-30 07:50:08,248 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 34 transitions, 194 flow [2023-08-30 07:50:08,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 222.5) internal successors, (890), 4 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:50:08,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:50:08,249 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1] [2023-08-30 07:50:08,260 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 07:50:08,457 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 07:50:08,458 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-08-30 07:50:08,458 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:50:08,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1956872062, now seen corresponding path program 3 times [2023-08-30 07:50:08,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 07:50:08,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1806518194] [2023-08-30 07:50:08,459 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 07:50:08,459 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 07:50:08,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 07:50:08,460 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 07:50:08,461 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 07:50:08,619 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-08-30 07:50:08,619 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 07:50:08,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-30 07:50:08,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:50:08,692 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2023-08-30 07:50:08,693 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 2 case distinctions, treesize of input 14 treesize of output 29 [2023-08-30 07:50:09,011 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:50:09,012 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 07:50:11,003 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:50:11,003 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 07:50:11,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1806518194] [2023-08-30 07:50:11,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1806518194] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 07:50:11,003 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 07:50:11,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2023-08-30 07:50:11,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903963427] [2023-08-30 07:50:11,004 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 07:50:11,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-30 07:50:11,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 07:50:11,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-30 07:50:11,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2023-08-30 07:50:26,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 533 [2023-08-30 07:50:26,647 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 34 transitions, 194 flow. Second operand has 24 states, 24 states have (on average 221.0) internal successors, (5304), 24 states have internal predecessors, (5304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:50:26,647 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:50:26,647 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 533 [2023-08-30 07:50:26,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:50:42,047 INFO L130 PetriNetUnfolder]: 1201/2275 cut-off events. [2023-08-30 07:50:42,047 INFO L131 PetriNetUnfolder]: For 753/753 co-relation queries the response was YES. [2023-08-30 07:50:42,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5042 conditions, 2275 events. 1201/2275 cut-off events. For 753/753 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 13367 event pairs, 631 based on Foata normal form. 12/1860 useless extension candidates. Maximal degree in co-relation 5019. Up to 504 conditions per place. [2023-08-30 07:50:42,056 INFO L137 encePairwiseOnDemand]: 529/533 looper letters, 296 selfloop transitions, 24 changer transitions 0/322 dead transitions. [2023-08-30 07:50:42,056 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 322 transitions, 1810 flow [2023-08-30 07:50:42,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-30 07:50:42,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-30 07:50:42,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 5591 transitions. [2023-08-30 07:50:42,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43707004377736086 [2023-08-30 07:50:42,081 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 5591 transitions. [2023-08-30 07:50:42,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 5591 transitions. [2023-08-30 07:50:42,083 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:50:42,083 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 5591 transitions. [2023-08-30 07:50:42,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 232.95833333333334) internal successors, (5591), 24 states have internal predecessors, (5591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:50:42,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 533.0) internal successors, (13325), 25 states have internal predecessors, (13325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:50:42,106 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 533.0) internal successors, (13325), 25 states have internal predecessors, (13325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:50:42,106 INFO L175 Difference]: Start difference. First operand has 55 places, 34 transitions, 194 flow. Second operand 24 states and 5591 transitions. [2023-08-30 07:50:42,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 322 transitions, 1810 flow [2023-08-30 07:50:42,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 322 transitions, 1786 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 07:50:42,112 INFO L231 Difference]: Finished difference. Result has 89 places, 47 transitions, 376 flow [2023-08-30 07:50:42,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=376, PETRI_PLACES=89, PETRI_TRANSITIONS=47} [2023-08-30 07:50:42,113 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 41 predicate places. [2023-08-30 07:50:42,113 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 47 transitions, 376 flow [2023-08-30 07:50:42,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 221.0) internal successors, (5304), 24 states have internal predecessors, (5304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:50:42,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:50:42,115 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 07:50:42,126 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 07:50:42,325 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 07:50:42,326 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-08-30 07:50:42,326 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:50:42,326 INFO L85 PathProgramCache]: Analyzing trace with hash 332401590, now seen corresponding path program 1 times [2023-08-30 07:50:42,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 07:50:42,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [347886839] [2023-08-30 07:50:42,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:50:42,327 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 07:50:42,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 07:50:42,328 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 07:50:42,330 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 07:50:42,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:50:42,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 07:50:42,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:50:42,822 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 07:50:42,823 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 07:50:42,823 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 07:50:42,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [347886839] [2023-08-30 07:50:42,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [347886839] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:50:42,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:50:42,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 07:50:42,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088544450] [2023-08-30 07:50:42,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:50:42,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 07:50:42,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 07:50:42,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 07:50:42,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 07:50:42,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 533 [2023-08-30 07:50:42,909 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 47 transitions, 376 flow. Second operand has 5 states, 5 states have (on average 215.0) internal successors, (1075), 5 states have internal predecessors, (1075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:50:42,909 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:50:42,909 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 533 [2023-08-30 07:50:42,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:50:43,608 INFO L130 PetriNetUnfolder]: 1493/2798 cut-off events. [2023-08-30 07:50:43,608 INFO L131 PetriNetUnfolder]: For 462/462 co-relation queries the response was YES. [2023-08-30 07:50:43,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6329 conditions, 2798 events. 1493/2798 cut-off events. For 462/462 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 15494 event pairs, 504 based on Foata normal form. 0/2504 useless extension candidates. Maximal degree in co-relation 6293. Up to 1560 conditions per place. [2023-08-30 07:50:43,621 INFO L137 encePairwiseOnDemand]: 527/533 looper letters, 62 selfloop transitions, 6 changer transitions 0/68 dead transitions. [2023-08-30 07:50:43,621 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 68 transitions, 559 flow [2023-08-30 07:50:43,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 07:50:43,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 07:50:43,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1101 transitions. [2023-08-30 07:50:43,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4131332082551595 [2023-08-30 07:50:43,625 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1101 transitions. [2023-08-30 07:50:43,625 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1101 transitions. [2023-08-30 07:50:43,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:50:43,626 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1101 transitions. [2023-08-30 07:50:43,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 220.2) internal successors, (1101), 5 states have internal predecessors, (1101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:50:43,631 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 533.0) internal successors, (3198), 6 states have internal predecessors, (3198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:50:43,632 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 533.0) internal successors, (3198), 6 states have internal predecessors, (3198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:50:43,632 INFO L175 Difference]: Start difference. First operand has 89 places, 47 transitions, 376 flow. Second operand 5 states and 1101 transitions. [2023-08-30 07:50:43,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 68 transitions, 559 flow [2023-08-30 07:50:43,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 68 transitions, 511 flow, removed 13 selfloop flow, removed 10 redundant places. [2023-08-30 07:50:43,637 INFO L231 Difference]: Finished difference. Result has 86 places, 50 transitions, 363 flow [2023-08-30 07:50:43,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=363, PETRI_PLACES=86, PETRI_TRANSITIONS=50} [2023-08-30 07:50:43,638 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 38 predicate places. [2023-08-30 07:50:43,638 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 50 transitions, 363 flow [2023-08-30 07:50:43,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 215.0) internal successors, (1075), 5 states have internal predecessors, (1075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:50:43,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:50:43,639 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 07:50:43,653 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 07:50:43,849 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 07:50:43,849 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-08-30 07:50:43,850 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:50:43,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1035715232, now seen corresponding path program 2 times [2023-08-30 07:50:43,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 07:50:43,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1376332002] [2023-08-30 07:50:43,850 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 07:50:43,850 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 07:50:43,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 07:50:43,851 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 07:50:43,853 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 07:50:43,944 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 07:50:43,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 07:50:43,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 07:50:43,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:50:44,206 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 07:50:44,206 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 144 treesize of output 109 [2023-08-30 07:50:44,235 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 120 treesize of output 116 [2023-08-30 07:50:44,359 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 07:50:44,359 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 07:50:44,360 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 07:50:44,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1376332002] [2023-08-30 07:50:44,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1376332002] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:50:44,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:50:44,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 07:50:44,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334312839] [2023-08-30 07:50:44,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:50:44,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 07:50:44,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 07:50:44,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 07:50:44,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 07:50:44,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 533 [2023-08-30 07:50:44,435 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 50 transitions, 363 flow. Second operand has 5 states, 5 states have (on average 217.0) internal successors, (1085), 5 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:50:44,435 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:50:44,435 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 533 [2023-08-30 07:50:44,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:50:45,328 INFO L130 PetriNetUnfolder]: 2203/4127 cut-off events. [2023-08-30 07:50:45,329 INFO L131 PetriNetUnfolder]: For 3115/3115 co-relation queries the response was YES. [2023-08-30 07:50:45,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12293 conditions, 4127 events. 2203/4127 cut-off events. For 3115/3115 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 25156 event pairs, 840 based on Foata normal form. 40/3607 useless extension candidates. Maximal degree in co-relation 12254. Up to 2608 conditions per place. [2023-08-30 07:50:45,345 INFO L137 encePairwiseOnDemand]: 527/533 looper letters, 67 selfloop transitions, 8 changer transitions 0/75 dead transitions. [2023-08-30 07:50:45,346 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 75 transitions, 622 flow [2023-08-30 07:50:45,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 07:50:45,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 07:50:45,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1107 transitions. [2023-08-30 07:50:45,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4153846153846154 [2023-08-30 07:50:45,349 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1107 transitions. [2023-08-30 07:50:45,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1107 transitions. [2023-08-30 07:50:45,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:50:45,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1107 transitions. [2023-08-30 07:50:45,350 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 221.4) internal successors, (1107), 5 states have internal predecessors, (1107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:50:45,353 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 533.0) internal successors, (3198), 6 states have internal predecessors, (3198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:50:45,353 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 533.0) internal successors, (3198), 6 states have internal predecessors, (3198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:50:45,353 INFO L175 Difference]: Start difference. First operand has 86 places, 50 transitions, 363 flow. Second operand 5 states and 1107 transitions. [2023-08-30 07:50:45,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 75 transitions, 622 flow [2023-08-30 07:50:45,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 75 transitions, 593 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-08-30 07:50:45,367 INFO L231 Difference]: Finished difference. Result has 92 places, 55 transitions, 414 flow [2023-08-30 07:50:45,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=414, PETRI_PLACES=92, PETRI_TRANSITIONS=55} [2023-08-30 07:50:45,368 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 44 predicate places. [2023-08-30 07:50:45,368 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 55 transitions, 414 flow [2023-08-30 07:50:45,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 217.0) internal successors, (1085), 5 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:50:45,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:50:45,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 07:50:45,379 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 (17)] Forceful destruction successful, exit code 0 [2023-08-30 07:50:45,579 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 07:50:45,579 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-08-30 07:50:45,580 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:50:45,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1767787162, now seen corresponding path program 3 times [2023-08-30 07:50:45,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 07:50:45,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1476282715] [2023-08-30 07:50:45,580 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 07:50:45,580 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 07:50:45,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 07:50:45,581 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 07:50:45,583 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 07:50:45,663 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-30 07:50:45,663 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 07:50:45,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 07:50:45,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:50:46,015 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 07:50:46,016 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 07:50:46,016 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 07:50:46,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1476282715] [2023-08-30 07:50:46,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1476282715] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:50:46,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:50:46,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 07:50:46,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286380776] [2023-08-30 07:50:46,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:50:46,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 07:50:46,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 07:50:46,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 07:50:46,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 07:50:46,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 533 [2023-08-30 07:50:46,083 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 55 transitions, 414 flow. Second operand has 5 states, 5 states have (on average 214.0) internal successors, (1070), 5 states have internal predecessors, (1070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:50:46,083 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:50:46,083 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 533 [2023-08-30 07:50:46,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:50:47,239 INFO L130 PetriNetUnfolder]: 2403/4447 cut-off events. [2023-08-30 07:50:47,239 INFO L131 PetriNetUnfolder]: For 7211/7211 co-relation queries the response was YES. [2023-08-30 07:50:47,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15936 conditions, 4447 events. 2403/4447 cut-off events. For 7211/7211 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 27079 event pairs, 880 based on Foata normal form. 80/4247 useless extension candidates. Maximal degree in co-relation 15894. Up to 2368 conditions per place. [2023-08-30 07:50:47,258 INFO L137 encePairwiseOnDemand]: 527/533 looper letters, 64 selfloop transitions, 15 changer transitions 0/79 dead transitions. [2023-08-30 07:50:47,259 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 79 transitions, 679 flow [2023-08-30 07:50:47,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 07:50:47,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 07:50:47,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1097 transitions. [2023-08-30 07:50:47,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4116322701688555 [2023-08-30 07:50:47,262 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1097 transitions. [2023-08-30 07:50:47,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1097 transitions. [2023-08-30 07:50:47,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:50:47,263 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1097 transitions. [2023-08-30 07:50:47,265 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 219.4) internal successors, (1097), 5 states have internal predecessors, (1097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:50:47,267 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 533.0) internal successors, (3198), 6 states have internal predecessors, (3198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:50:47,267 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 533.0) internal successors, (3198), 6 states have internal predecessors, (3198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:50:47,267 INFO L175 Difference]: Start difference. First operand has 92 places, 55 transitions, 414 flow. Second operand 5 states and 1097 transitions. [2023-08-30 07:50:47,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 79 transitions, 679 flow [2023-08-30 07:50:47,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 79 transitions, 655 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-08-30 07:50:47,286 INFO L231 Difference]: Finished difference. Result has 98 places, 62 transitions, 510 flow [2023-08-30 07:50:47,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=510, PETRI_PLACES=98, PETRI_TRANSITIONS=62} [2023-08-30 07:50:47,287 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 50 predicate places. [2023-08-30 07:50:47,287 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 62 transitions, 510 flow [2023-08-30 07:50:47,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 214.0) internal successors, (1070), 5 states have internal predecessors, (1070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:50:47,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:50:47,287 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 07:50:47,300 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-08-30 07:50:47,497 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 07:50:47,498 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-08-30 07:50:47,498 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:50:47,498 INFO L85 PathProgramCache]: Analyzing trace with hash 899407164, now seen corresponding path program 4 times [2023-08-30 07:50:47,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 07:50:47,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [88253876] [2023-08-30 07:50:47,498 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 07:50:47,499 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 07:50:47,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 07:50:47,500 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 07:50:47,501 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 07:50:47,592 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 07:50:47,592 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 07:50:47,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 07:50:47,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:50:47,919 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 07:50:47,920 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 07:50:47,920 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 07:50:47,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [88253876] [2023-08-30 07:50:47,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [88253876] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:50:47,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:50:47,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 07:50:47,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262914914] [2023-08-30 07:50:47,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:50:47,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 07:50:47,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 07:50:47,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 07:50:47,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 07:50:47,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 533 [2023-08-30 07:50:48,000 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 62 transitions, 510 flow. Second operand has 5 states, 5 states have (on average 214.0) internal successors, (1070), 5 states have internal predecessors, (1070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:50:48,000 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:50:48,000 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 533 [2023-08-30 07:50:48,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:50:48,996 INFO L130 PetriNetUnfolder]: 2323/4367 cut-off events. [2023-08-30 07:50:48,996 INFO L131 PetriNetUnfolder]: For 11516/11516 co-relation queries the response was YES. [2023-08-30 07:50:49,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17139 conditions, 4367 events. 2323/4367 cut-off events. For 11516/11516 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 26855 event pairs, 1000 based on Foata normal form. 80/4167 useless extension candidates. Maximal degree in co-relation 17094. Up to 3488 conditions per place. [2023-08-30 07:50:49,020 INFO L137 encePairwiseOnDemand]: 527/533 looper letters, 62 selfloop transitions, 16 changer transitions 0/78 dead transitions. [2023-08-30 07:50:49,020 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 78 transitions, 755 flow [2023-08-30 07:50:49,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 07:50:49,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 07:50:49,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1091 transitions. [2023-08-30 07:50:49,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40938086303939963 [2023-08-30 07:50:49,023 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1091 transitions. [2023-08-30 07:50:49,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1091 transitions. [2023-08-30 07:50:49,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:50:49,023 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1091 transitions. [2023-08-30 07:50:49,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 218.2) internal successors, (1091), 5 states have internal predecessors, (1091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:50:49,026 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 533.0) internal successors, (3198), 6 states have internal predecessors, (3198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:50:49,026 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 533.0) internal successors, (3198), 6 states have internal predecessors, (3198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:50:49,026 INFO L175 Difference]: Start difference. First operand has 98 places, 62 transitions, 510 flow. Second operand 5 states and 1091 transitions. [2023-08-30 07:50:49,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 78 transitions, 755 flow [2023-08-30 07:50:49,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 78 transitions, 736 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-08-30 07:50:49,053 INFO L231 Difference]: Finished difference. Result has 103 places, 69 transitions, 614 flow [2023-08-30 07:50:49,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=494, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=614, PETRI_PLACES=103, PETRI_TRANSITIONS=69} [2023-08-30 07:50:49,054 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 55 predicate places. [2023-08-30 07:50:49,054 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 69 transitions, 614 flow [2023-08-30 07:50:49,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 214.0) internal successors, (1070), 5 states have internal predecessors, (1070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:50:49,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:50:49,056 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 07:50:49,066 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 (19)] Ended with exit code 0 [2023-08-30 07:50:49,264 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 07:50:49,265 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-08-30 07:50:49,265 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:50:49,265 INFO L85 PathProgramCache]: Analyzing trace with hash 999680256, now seen corresponding path program 5 times [2023-08-30 07:50:49,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 07:50:49,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [558377684] [2023-08-30 07:50:49,266 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 07:50:49,266 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 07:50:49,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 07:50:49,267 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 07:50:49,268 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 (20)] Waiting until timeout for monitored process [2023-08-30 07:50:49,384 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 07:50:49,384 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 07:50:49,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 07:50:49,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:50:49,726 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 07:50:49,727 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 151 treesize of output 116 [2023-08-30 07:50:49,736 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 116 treesize of output 114 [2023-08-30 07:50:49,743 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 114 treesize of output 112 [2023-08-30 07:50:49,783 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 07:50:49,783 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 144 treesize of output 109 [2023-08-30 07:50:49,797 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 120 treesize of output 116 [2023-08-30 07:50:49,899 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 07:50:49,899 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 07:50:49,899 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 07:50:49,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [558377684] [2023-08-30 07:50:49,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [558377684] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:50:49,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:50:49,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 07:50:49,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014593501] [2023-08-30 07:50:49,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:50:49,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 07:50:49,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 07:50:49,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 07:50:49,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 07:50:49,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 533 [2023-08-30 07:50:50,000 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 69 transitions, 614 flow. Second operand has 5 states, 5 states have (on average 217.0) internal successors, (1085), 5 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:50:50,000 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:50:50,000 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 533 [2023-08-30 07:50:50,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:50:50,999 INFO L130 PetriNetUnfolder]: 2343/4427 cut-off events. [2023-08-30 07:50:50,999 INFO L131 PetriNetUnfolder]: For 15411/15411 co-relation queries the response was YES. [2023-08-30 07:50:51,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19381 conditions, 4427 events. 2343/4427 cut-off events. For 15411/15411 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 27553 event pairs, 760 based on Foata normal form. 40/4187 useless extension candidates. Maximal degree in co-relation 19334. Up to 2408 conditions per place. [2023-08-30 07:50:51,031 INFO L137 encePairwiseOnDemand]: 527/533 looper letters, 65 selfloop transitions, 19 changer transitions 0/84 dead transitions. [2023-08-30 07:50:51,031 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 84 transitions, 836 flow [2023-08-30 07:50:51,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 07:50:51,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 07:50:51,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1110 transitions. [2023-08-30 07:50:51,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4165103189493433 [2023-08-30 07:50:51,034 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1110 transitions. [2023-08-30 07:50:51,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1110 transitions. [2023-08-30 07:50:51,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:50:51,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1110 transitions. [2023-08-30 07:50:51,035 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 222.0) internal successors, (1110), 5 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:50:51,037 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 533.0) internal successors, (3198), 6 states have internal predecessors, (3198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:50:51,037 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 533.0) internal successors, (3198), 6 states have internal predecessors, (3198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:50:51,037 INFO L175 Difference]: Start difference. First operand has 103 places, 69 transitions, 614 flow. Second operand 5 states and 1110 transitions. [2023-08-30 07:50:51,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 84 transitions, 836 flow [2023-08-30 07:50:51,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 84 transitions, 780 flow, removed 16 selfloop flow, removed 2 redundant places. [2023-08-30 07:50:51,137 INFO L231 Difference]: Finished difference. Result has 106 places, 71 transitions, 621 flow [2023-08-30 07:50:51,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=558, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=621, PETRI_PLACES=106, PETRI_TRANSITIONS=71} [2023-08-30 07:50:51,137 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 58 predicate places. [2023-08-30 07:50:51,137 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 71 transitions, 621 flow [2023-08-30 07:50:51,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 217.0) internal successors, (1085), 5 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:50:51,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:50:51,138 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 07:50:51,146 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 07:50:51,338 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 07:50:51,338 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-08-30 07:50:51,338 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:50:51,339 INFO L85 PathProgramCache]: Analyzing trace with hash -250457530, now seen corresponding path program 6 times [2023-08-30 07:50:51,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 07:50:51,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1134517750] [2023-08-30 07:50:51,339 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 07:50:51,339 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 07:50:51,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 07:50:51,340 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 07:50:51,342 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 07:50:51,439 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-08-30 07:50:51,439 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 07:50:51,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 07:50:51,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:50:51,796 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 07:50:51,797 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 144 treesize of output 109 [2023-08-30 07:50:51,815 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 120 treesize of output 116 [2023-08-30 07:50:51,906 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 07:50:51,906 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 07:50:51,907 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 07:50:51,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1134517750] [2023-08-30 07:50:51,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1134517750] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:50:51,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:50:51,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 07:50:51,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869127891] [2023-08-30 07:50:51,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:50:51,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 07:50:51,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 07:50:51,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 07:50:51,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 07:50:52,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 533 [2023-08-30 07:50:52,005 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 71 transitions, 621 flow. Second operand has 5 states, 5 states have (on average 217.0) internal successors, (1085), 5 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:50:52,005 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:50:52,005 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 533 [2023-08-30 07:50:52,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:50:53,012 INFO L130 PetriNetUnfolder]: 2323/4287 cut-off events. [2023-08-30 07:50:53,013 INFO L131 PetriNetUnfolder]: For 14197/14197 co-relation queries the response was YES. [2023-08-30 07:50:53,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18102 conditions, 4287 events. 2323/4287 cut-off events. For 14197/14197 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 25701 event pairs, 980 based on Foata normal form. 40/4047 useless extension candidates. Maximal degree in co-relation 18054. Up to 3348 conditions per place. [2023-08-30 07:50:53,038 INFO L137 encePairwiseOnDemand]: 527/533 looper letters, 65 selfloop transitions, 17 changer transitions 0/82 dead transitions. [2023-08-30 07:50:53,038 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 82 transitions, 833 flow [2023-08-30 07:50:53,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 07:50:53,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 07:50:53,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1106 transitions. [2023-08-30 07:50:53,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4150093808630394 [2023-08-30 07:50:53,040 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1106 transitions. [2023-08-30 07:50:53,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1106 transitions. [2023-08-30 07:50:53,041 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:50:53,041 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1106 transitions. [2023-08-30 07:50:53,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 221.2) internal successors, (1106), 5 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:50:53,044 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 533.0) internal successors, (3198), 6 states have internal predecessors, (3198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:50:53,044 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 533.0) internal successors, (3198), 6 states have internal predecessors, (3198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:50:53,044 INFO L175 Difference]: Start difference. First operand has 106 places, 71 transitions, 621 flow. Second operand 5 states and 1106 transitions. [2023-08-30 07:50:53,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 82 transitions, 833 flow [2023-08-30 07:50:53,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 82 transitions, 783 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-08-30 07:50:53,089 INFO L231 Difference]: Finished difference. Result has 108 places, 73 transitions, 638 flow [2023-08-30 07:50:53,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=575, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=638, PETRI_PLACES=108, PETRI_TRANSITIONS=73} [2023-08-30 07:50:53,089 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 60 predicate places. [2023-08-30 07:50:53,089 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 73 transitions, 638 flow [2023-08-30 07:50:53,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 217.0) internal successors, (1085), 5 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:50:53,090 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:50:53,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 07:50:53,101 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2023-08-30 07:50:53,300 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 07:50:53,301 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-08-30 07:50:53,301 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:50:53,301 INFO L85 PathProgramCache]: Analyzing trace with hash -2146431135, now seen corresponding path program 1 times [2023-08-30 07:50:53,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 07:50:53,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [156434543] [2023-08-30 07:50:53,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:50:53,301 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 07:50:53,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 07:50:53,302 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 07:50:53,304 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 07:50:53,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:50:53,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 07:50:53,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:50:53,769 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 07:50:53,770 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 151 treesize of output 116 [2023-08-30 07:50:53,777 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 116 treesize of output 114 [2023-08-30 07:50:53,783 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 114 treesize of output 112 [2023-08-30 07:50:53,819 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 07:50:53,820 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 144 treesize of output 109 [2023-08-30 07:50:53,833 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 120 treesize of output 116 [2023-08-30 07:50:53,915 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 07:50:53,916 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 07:50:54,240 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 07:50:54,241 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 378 treesize of output 308 [2023-08-30 07:50:54,259 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 308 treesize of output 304 [2023-08-30 07:50:54,269 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 304 treesize of output 298 [2023-08-30 07:50:55,456 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 07:50:55,456 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 07:50:55,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [156434543] [2023-08-30 07:50:55,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [156434543] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 07:50:55,456 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 07:50:55,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-08-30 07:50:55,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705024074] [2023-08-30 07:50:55,456 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 07:50:55,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 07:50:55,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 07:50:55,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 07:50:55,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-08-30 07:50:56,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 533 [2023-08-30 07:50:56,053 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 73 transitions, 638 flow. Second operand has 10 states, 10 states have (on average 212.3) internal successors, (2123), 10 states have internal predecessors, (2123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:50:56,053 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:50:56,053 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 533 [2023-08-30 07:50:56,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:50:59,175 INFO L130 PetriNetUnfolder]: 5503/10427 cut-off events. [2023-08-30 07:50:59,175 INFO L131 PetriNetUnfolder]: For 25671/25671 co-relation queries the response was YES. [2023-08-30 07:50:59,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40423 conditions, 10427 events. 5503/10427 cut-off events. For 25671/25671 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 77224 event pairs, 760 based on Foata normal form. 240/9907 useless extension candidates. Maximal degree in co-relation 40374. Up to 3441 conditions per place. [2023-08-30 07:50:59,237 INFO L137 encePairwiseOnDemand]: 527/533 looper letters, 117 selfloop transitions, 42 changer transitions 0/159 dead transitions. [2023-08-30 07:50:59,238 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 159 transitions, 1303 flow [2023-08-30 07:50:59,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 07:50:59,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 07:50:59,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3048 transitions. [2023-08-30 07:50:59,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4084695792012865 [2023-08-30 07:50:59,242 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3048 transitions. [2023-08-30 07:50:59,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3048 transitions. [2023-08-30 07:50:59,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:50:59,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3048 transitions. [2023-08-30 07:50:59,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 217.71428571428572) internal successors, (3048), 14 states have internal predecessors, (3048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:50:59,249 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 533.0) internal successors, (7995), 15 states have internal predecessors, (7995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:50:59,250 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 533.0) internal successors, (7995), 15 states have internal predecessors, (7995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:50:59,250 INFO L175 Difference]: Start difference. First operand has 108 places, 73 transitions, 638 flow. Second operand 14 states and 3048 transitions. [2023-08-30 07:50:59,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 159 transitions, 1303 flow [2023-08-30 07:50:59,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 159 transitions, 1240 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-08-30 07:50:59,338 INFO L231 Difference]: Finished difference. Result has 125 places, 94 transitions, 869 flow [2023-08-30 07:50:59,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=599, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=869, PETRI_PLACES=125, PETRI_TRANSITIONS=94} [2023-08-30 07:50:59,338 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 77 predicate places. [2023-08-30 07:50:59,338 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 94 transitions, 869 flow [2023-08-30 07:50:59,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 212.3) internal successors, (2123), 10 states have internal predecessors, (2123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:50:59,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:50:59,339 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 07:50:59,347 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 07:50:59,539 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 07:50:59,539 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-08-30 07:50:59,540 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:50:59,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1882627481, now seen corresponding path program 2 times [2023-08-30 07:50:59,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 07:50:59,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [290441670] [2023-08-30 07:50:59,540 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 07:50:59,540 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 07:50:59,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 07:50:59,541 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 07:50:59,547 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 07:50:59,711 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 07:50:59,711 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 07:50:59,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 07:50:59,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:51:00,016 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 07:51:00,016 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 07:51:00,243 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 07:51:00,243 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 164 treesize of output 129 [2023-08-30 07:51:00,249 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 129 treesize of output 127 [2023-08-30 07:51:00,258 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 127 treesize of output 125 [2023-08-30 07:51:00,510 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 07:51:00,511 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 158 treesize of output 123 [2023-08-30 07:51:00,531 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 135 treesize of output 131 [2023-08-30 07:51:01,415 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 07:51:01,416 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 07:51:01,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [290441670] [2023-08-30 07:51:01,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [290441670] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 07:51:01,416 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 07:51:01,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-08-30 07:51:01,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72656658] [2023-08-30 07:51:01,416 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 07:51:01,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 07:51:01,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 07:51:01,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 07:51:01,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-08-30 07:51:01,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 533 [2023-08-30 07:51:01,650 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 94 transitions, 869 flow. Second operand has 10 states, 10 states have (on average 214.3) internal successors, (2143), 10 states have internal predecessors, (2143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:51:01,650 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:51:01,650 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 533 [2023-08-30 07:51:01,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:51:05,082 INFO L130 PetriNetUnfolder]: 5743/10987 cut-off events. [2023-08-30 07:51:05,082 INFO L131 PetriNetUnfolder]: For 56469/56469 co-relation queries the response was YES. [2023-08-30 07:51:05,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53750 conditions, 10987 events. 5743/10987 cut-off events. For 56469/56469 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 81481 event pairs, 880 based on Foata normal form. 240/10707 useless extension candidates. Maximal degree in co-relation 53694. Up to 3761 conditions per place. [2023-08-30 07:51:05,177 INFO L137 encePairwiseOnDemand]: 527/533 looper letters, 138 selfloop transitions, 56 changer transitions 0/194 dead transitions. [2023-08-30 07:51:05,177 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 194 transitions, 1894 flow [2023-08-30 07:51:05,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-30 07:51:05,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-30 07:51:05,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3510 transitions. [2023-08-30 07:51:05,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4115853658536585 [2023-08-30 07:51:05,182 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3510 transitions. [2023-08-30 07:51:05,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3510 transitions. [2023-08-30 07:51:05,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:51:05,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3510 transitions. [2023-08-30 07:51:05,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 219.375) internal successors, (3510), 16 states have internal predecessors, (3510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:51:05,191 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 533.0) internal successors, (9061), 17 states have internal predecessors, (9061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:51:05,192 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 533.0) internal successors, (9061), 17 states have internal predecessors, (9061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:51:05,192 INFO L175 Difference]: Start difference. First operand has 125 places, 94 transitions, 869 flow. Second operand 16 states and 3510 transitions. [2023-08-30 07:51:05,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 194 transitions, 1894 flow [2023-08-30 07:51:05,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 194 transitions, 1726 flow, removed 58 selfloop flow, removed 4 redundant places. [2023-08-30 07:51:05,587 INFO L231 Difference]: Finished difference. Result has 145 places, 120 transitions, 1200 flow [2023-08-30 07:51:05,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=763, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1200, PETRI_PLACES=145, PETRI_TRANSITIONS=120} [2023-08-30 07:51:05,588 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 97 predicate places. [2023-08-30 07:51:05,588 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 120 transitions, 1200 flow [2023-08-30 07:51:05,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 214.3) internal successors, (2143), 10 states have internal predecessors, (2143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:51:05,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:51:05,588 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 07:51:05,601 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2023-08-30 07:51:05,799 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 07:51:05,799 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-08-30 07:51:05,800 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:51:05,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1088265703, now seen corresponding path program 3 times [2023-08-30 07:51:05,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 07:51:05,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [388295360] [2023-08-30 07:51:05,800 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 07:51:05,800 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 07:51:05,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 07:51:05,801 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 07:51:05,802 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 07:51:05,964 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-30 07:51:05,964 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 07:51:05,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 07:51:05,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:51:06,313 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 07:51:06,313 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 07:51:06,550 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 07:51:06,550 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 164 treesize of output 129 [2023-08-30 07:51:06,556 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 129 treesize of output 127 [2023-08-30 07:51:06,562 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 127 treesize of output 125 [2023-08-30 07:51:06,771 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 07:51:06,771 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 158 treesize of output 123 [2023-08-30 07:51:06,788 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 135 treesize of output 131 [2023-08-30 07:51:07,544 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 07:51:07,545 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 07:51:07,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [388295360] [2023-08-30 07:51:07,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [388295360] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 07:51:07,545 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 07:51:07,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-08-30 07:51:07,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230002826] [2023-08-30 07:51:07,546 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 07:51:07,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 07:51:07,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 07:51:07,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 07:51:07,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-08-30 07:51:07,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 533 [2023-08-30 07:51:07,935 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 120 transitions, 1200 flow. Second operand has 10 states, 10 states have (on average 213.2) internal successors, (2132), 10 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:51:07,935 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:51:07,935 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 533 [2023-08-30 07:51:07,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:51:11,084 INFO L130 PetriNetUnfolder]: 5443/10087 cut-off events. [2023-08-30 07:51:11,084 INFO L131 PetriNetUnfolder]: For 66386/66386 co-relation queries the response was YES. [2023-08-30 07:51:11,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53799 conditions, 10087 events. 5443/10087 cut-off events. For 66386/66386 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 71004 event pairs, 844 based on Foata normal form. 400/9967 useless extension candidates. Maximal degree in co-relation 53734. Up to 3361 conditions per place. [2023-08-30 07:51:11,156 INFO L137 encePairwiseOnDemand]: 527/533 looper letters, 114 selfloop transitions, 67 changer transitions 0/181 dead transitions. [2023-08-30 07:51:11,156 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 181 transitions, 1875 flow [2023-08-30 07:51:11,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 07:51:11,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 07:51:11,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2844 transitions. [2023-08-30 07:51:11,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4104488382161928 [2023-08-30 07:51:11,160 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2844 transitions. [2023-08-30 07:51:11,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2844 transitions. [2023-08-30 07:51:11,160 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:51:11,160 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2844 transitions. [2023-08-30 07:51:11,162 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 218.76923076923077) internal successors, (2844), 13 states have internal predecessors, (2844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:51:11,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 533.0) internal successors, (7462), 14 states have internal predecessors, (7462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:51:11,166 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 533.0) internal successors, (7462), 14 states have internal predecessors, (7462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:51:11,166 INFO L175 Difference]: Start difference. First operand has 145 places, 120 transitions, 1200 flow. Second operand 13 states and 2844 transitions. [2023-08-30 07:51:11,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 181 transitions, 1875 flow [2023-08-30 07:51:11,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 181 transitions, 1739 flow, removed 53 selfloop flow, removed 3 redundant places. [2023-08-30 07:51:11,676 INFO L231 Difference]: Finished difference. Result has 156 places, 127 transitions, 1331 flow [2023-08-30 07:51:11,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=1090, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1331, PETRI_PLACES=156, PETRI_TRANSITIONS=127} [2023-08-30 07:51:11,677 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 108 predicate places. [2023-08-30 07:51:11,677 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 127 transitions, 1331 flow [2023-08-30 07:51:11,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 213.2) internal successors, (2132), 10 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:51:11,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:51:11,678 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 07:51:11,686 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 07:51:11,878 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 07:51:11,878 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-08-30 07:51:11,878 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:51:11,879 INFO L85 PathProgramCache]: Analyzing trace with hash 380084327, now seen corresponding path program 4 times [2023-08-30 07:51:11,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 07:51:11,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1557496490] [2023-08-30 07:51:11,879 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 07:51:11,879 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 07:51:11,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 07:51:11,880 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 07:51:11,883 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 07:51:12,006 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 07:51:12,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 07:51:12,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 07:51:12,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:51:12,285 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 07:51:12,286 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 151 treesize of output 116 [2023-08-30 07:51:12,295 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 116 treesize of output 114 [2023-08-30 07:51:12,302 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 114 treesize of output 112 [2023-08-30 07:51:12,342 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 07:51:12,342 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 144 treesize of output 109 [2023-08-30 07:51:12,354 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 120 treesize of output 116 [2023-08-30 07:51:12,442 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 07:51:12,443 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 07:51:12,761 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 07:51:12,762 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 378 treesize of output 308 [2023-08-30 07:51:12,781 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 308 treesize of output 302 [2023-08-30 07:51:12,792 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 302 treesize of output 298 [2023-08-30 07:51:13,799 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 07:51:13,799 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 07:51:13,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1557496490] [2023-08-30 07:51:13,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1557496490] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 07:51:13,799 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 07:51:13,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-08-30 07:51:13,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148208694] [2023-08-30 07:51:13,799 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 07:51:13,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 07:51:13,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 07:51:13,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 07:51:13,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-08-30 07:51:14,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 533 [2023-08-30 07:51:14,512 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 127 transitions, 1331 flow. Second operand has 10 states, 10 states have (on average 211.1) internal successors, (2111), 10 states have internal predecessors, (2111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:51:14,512 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:51:14,513 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 533 [2023-08-30 07:51:14,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:51:18,116 INFO L130 PetriNetUnfolder]: 6123/11487 cut-off events. [2023-08-30 07:51:18,116 INFO L131 PetriNetUnfolder]: For 66791/66791 co-relation queries the response was YES. [2023-08-30 07:51:18,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60602 conditions, 11487 events. 6123/11487 cut-off events. For 66791/66791 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 84149 event pairs, 1500 based on Foata normal form. 200/10927 useless extension candidates. Maximal degree in co-relation 60534. Up to 5188 conditions per place. [2023-08-30 07:51:18,202 INFO L137 encePairwiseOnDemand]: 527/533 looper letters, 129 selfloop transitions, 57 changer transitions 0/186 dead transitions. [2023-08-30 07:51:18,202 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 186 transitions, 2001 flow [2023-08-30 07:51:18,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 07:51:18,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 07:51:18,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2805 transitions. [2023-08-30 07:51:18,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40482032039255306 [2023-08-30 07:51:18,207 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2805 transitions. [2023-08-30 07:51:18,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2805 transitions. [2023-08-30 07:51:18,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:51:18,208 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2805 transitions. [2023-08-30 07:51:18,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 215.76923076923077) internal successors, (2805), 13 states have internal predecessors, (2805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:51:18,215 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 533.0) internal successors, (7462), 14 states have internal predecessors, (7462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:51:18,216 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 533.0) internal successors, (7462), 14 states have internal predecessors, (7462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:51:18,216 INFO L175 Difference]: Start difference. First operand has 156 places, 127 transitions, 1331 flow. Second operand 13 states and 2805 transitions. [2023-08-30 07:51:18,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 186 transitions, 2001 flow [2023-08-30 07:51:18,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 186 transitions, 1882 flow, removed 20 selfloop flow, removed 6 redundant places. [2023-08-30 07:51:18,905 INFO L231 Difference]: Finished difference. Result has 168 places, 141 transitions, 1518 flow [2023-08-30 07:51:18,905 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=1224, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1518, PETRI_PLACES=168, PETRI_TRANSITIONS=141} [2023-08-30 07:51:18,906 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 120 predicate places. [2023-08-30 07:51:18,906 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 141 transitions, 1518 flow [2023-08-30 07:51:18,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 211.1) internal successors, (2111), 10 states have internal predecessors, (2111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:51:18,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:51:18,907 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 07:51:18,915 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 07:51:19,108 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 07:51:19,109 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-08-30 07:51:19,109 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:51:19,109 INFO L85 PathProgramCache]: Analyzing trace with hash -37460335, now seen corresponding path program 1 times [2023-08-30 07:51:19,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 07:51:19,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1196206580] [2023-08-30 07:51:19,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:51:19,110 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 07:51:19,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 07:51:19,111 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 07:51:19,112 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 07:51:19,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:51:19,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 07:51:19,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:51:19,581 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 07:51:19,581 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 07:51:19,816 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 07:51:19,816 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 158 treesize of output 123 [2023-08-30 07:51:19,827 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 135 treesize of output 131 [2023-08-30 07:51:20,574 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 07:51:20,574 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 164 treesize of output 129 [2023-08-30 07:51:20,585 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 129 treesize of output 127 [2023-08-30 07:51:20,597 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 127 treesize of output 125 [2023-08-30 07:51:20,875 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 07:51:20,875 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 07:51:20,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1196206580] [2023-08-30 07:51:20,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1196206580] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 07:51:20,875 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 07:51:20,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-08-30 07:51:20,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637942791] [2023-08-30 07:51:20,875 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 07:51:20,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 07:51:20,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 07:51:20,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 07:51:20,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-08-30 07:51:21,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 533 [2023-08-30 07:51:21,187 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 141 transitions, 1518 flow. Second operand has 10 states, 10 states have (on average 212.3) internal successors, (2123), 10 states have internal predecessors, (2123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:51:21,187 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:51:21,187 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 533 [2023-08-30 07:51:21,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:51:25,533 INFO L130 PetriNetUnfolder]: 6403/12287 cut-off events. [2023-08-30 07:51:25,533 INFO L131 PetriNetUnfolder]: For 71451/71451 co-relation queries the response was YES. [2023-08-30 07:51:25,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67928 conditions, 12287 events. 6403/12287 cut-off events. For 71451/71451 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 94052 event pairs, 1640 based on Foata normal form. 80/11727 useless extension candidates. Maximal degree in co-relation 67854. Up to 5408 conditions per place. [2023-08-30 07:51:25,671 INFO L137 encePairwiseOnDemand]: 527/533 looper letters, 139 selfloop transitions, 66 changer transitions 0/205 dead transitions. [2023-08-30 07:51:25,671 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 205 transitions, 2250 flow [2023-08-30 07:51:25,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 07:51:25,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 07:51:25,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3041 transitions. [2023-08-30 07:51:25,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4075314928973466 [2023-08-30 07:51:25,676 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3041 transitions. [2023-08-30 07:51:25,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3041 transitions. [2023-08-30 07:51:25,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:51:25,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3041 transitions. [2023-08-30 07:51:25,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 217.21428571428572) internal successors, (3041), 14 states have internal predecessors, (3041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:51:25,687 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 533.0) internal successors, (7995), 15 states have internal predecessors, (7995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:51:25,688 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 533.0) internal successors, (7995), 15 states have internal predecessors, (7995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:51:25,688 INFO L175 Difference]: Start difference. First operand has 168 places, 141 transitions, 1518 flow. Second operand 14 states and 3041 transitions. [2023-08-30 07:51:25,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 205 transitions, 2250 flow [2023-08-30 07:51:26,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 205 transitions, 2143 flow, removed 29 selfloop flow, removed 4 redundant places. [2023-08-30 07:51:26,927 INFO L231 Difference]: Finished difference. Result has 183 places, 152 transitions, 1747 flow [2023-08-30 07:51:26,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=1443, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1747, PETRI_PLACES=183, PETRI_TRANSITIONS=152} [2023-08-30 07:51:26,927 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 135 predicate places. [2023-08-30 07:51:26,927 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 152 transitions, 1747 flow [2023-08-30 07:51:26,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 212.3) internal successors, (2123), 10 states have internal predecessors, (2123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:51:26,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:51:26,928 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 07:51:26,936 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2023-08-30 07:51:27,128 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 07:51:27,129 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-08-30 07:51:27,129 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:51:27,129 INFO L85 PathProgramCache]: Analyzing trace with hash 2036223251, now seen corresponding path program 2 times [2023-08-30 07:51:27,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 07:51:27,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [210326613] [2023-08-30 07:51:27,130 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 07:51:27,130 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 07:51:27,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 07:51:27,131 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 07:51:27,131 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 07:51:27,309 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 07:51:27,309 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 07:51:27,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 07:51:27,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:51:27,588 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 07:51:27,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 07:51:27,810 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 07:51:27,811 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 164 treesize of output 129 [2023-08-30 07:51:27,817 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 129 treesize of output 127 [2023-08-30 07:51:27,823 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 127 treesize of output 125 [2023-08-30 07:51:27,994 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 07:51:27,995 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 158 treesize of output 123 [2023-08-30 07:51:28,015 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 135 treesize of output 131 [2023-08-30 07:51:28,774 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 07:51:28,774 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 07:51:28,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [210326613] [2023-08-30 07:51:28,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [210326613] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 07:51:28,775 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 07:51:28,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-08-30 07:51:28,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248077538] [2023-08-30 07:51:28,775 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 07:51:28,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 07:51:28,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 07:51:28,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 07:51:28,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-08-30 07:51:29,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 533 [2023-08-30 07:51:29,611 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 152 transitions, 1747 flow. Second operand has 10 states, 10 states have (on average 212.1) internal successors, (2121), 10 states have internal predecessors, (2121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:51:29,611 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:51:29,611 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 533 [2023-08-30 07:51:29,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:51:35,039 INFO L130 PetriNetUnfolder]: 7563/14007 cut-off events. [2023-08-30 07:51:35,040 INFO L131 PetriNetUnfolder]: For 107151/107151 co-relation queries the response was YES. [2023-08-30 07:51:35,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87934 conditions, 14007 events. 7563/14007 cut-off events. For 107151/107151 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 105269 event pairs, 1480 based on Foata normal form. 160/13247 useless extension candidates. Maximal degree in co-relation 87854. Up to 5488 conditions per place. [2023-08-30 07:51:35,199 INFO L137 encePairwiseOnDemand]: 527/533 looper letters, 134 selfloop transitions, 94 changer transitions 0/228 dead transitions. [2023-08-30 07:51:35,199 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 228 transitions, 2768 flow [2023-08-30 07:51:35,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-30 07:51:35,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-30 07:51:35,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3473 transitions. [2023-08-30 07:51:35,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4072467166979362 [2023-08-30 07:51:35,205 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3473 transitions. [2023-08-30 07:51:35,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3473 transitions. [2023-08-30 07:51:35,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:51:35,206 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3473 transitions. [2023-08-30 07:51:35,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 217.0625) internal successors, (3473), 16 states have internal predecessors, (3473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:51:35,217 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 533.0) internal successors, (9061), 17 states have internal predecessors, (9061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:51:35,218 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 533.0) internal successors, (9061), 17 states have internal predecessors, (9061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:51:35,218 INFO L175 Difference]: Start difference. First operand has 183 places, 152 transitions, 1747 flow. Second operand 16 states and 3473 transitions. [2023-08-30 07:51:35,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 228 transitions, 2768 flow [2023-08-30 07:51:36,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 228 transitions, 2632 flow, removed 52 selfloop flow, removed 5 redundant places. [2023-08-30 07:51:36,985 INFO L231 Difference]: Finished difference. Result has 193 places, 177 transitions, 2245 flow [2023-08-30 07:51:36,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=1636, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2245, PETRI_PLACES=193, PETRI_TRANSITIONS=177} [2023-08-30 07:51:36,986 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 145 predicate places. [2023-08-30 07:51:36,986 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 177 transitions, 2245 flow [2023-08-30 07:51:36,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 212.1) internal successors, (2121), 10 states have internal predecessors, (2121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:51:36,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:51:36,987 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 07:51:36,996 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 (27)] Forceful destruction successful, exit code 0 [2023-08-30 07:51:37,189 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 07:51:37,189 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-08-30 07:51:37,189 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:51:37,189 INFO L85 PathProgramCache]: Analyzing trace with hash 711736033, now seen corresponding path program 5 times [2023-08-30 07:51:37,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 07:51:37,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1587691369] [2023-08-30 07:51:37,190 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 07:51:37,190 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 07:51:37,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 07:51:37,191 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 07:51:37,192 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 07:51:37,304 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 07:51:37,304 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 07:51:37,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 07:51:37,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:51:37,567 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 07:51:37,567 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 144 treesize of output 109 [2023-08-30 07:51:37,578 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 120 treesize of output 116 [2023-08-30 07:51:37,665 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 07:51:37,666 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 07:51:37,973 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 07:51:37,974 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 378 treesize of output 308 [2023-08-30 07:51:37,984 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 308 treesize of output 302 [2023-08-30 07:51:37,991 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 302 treesize of output 298 [2023-08-30 07:51:38,465 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 07:51:38,465 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 07:51:38,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1587691369] [2023-08-30 07:51:38,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1587691369] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 07:51:38,466 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 07:51:38,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-08-30 07:51:38,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009290083] [2023-08-30 07:51:38,466 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 07:51:38,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 07:51:38,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 07:51:38,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 07:51:38,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-08-30 07:51:38,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 533 [2023-08-30 07:51:38,686 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 177 transitions, 2245 flow. Second operand has 10 states, 10 states have (on average 212.1) internal successors, (2121), 10 states have internal predecessors, (2121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:51:38,686 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:51:38,686 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 533 [2023-08-30 07:51:38,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:51:42,973 INFO L130 PetriNetUnfolder]: 9303/17307 cut-off events. [2023-08-30 07:51:42,973 INFO L131 PetriNetUnfolder]: For 128921/128921 co-relation queries the response was YES. [2023-08-30 07:51:43,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110972 conditions, 17307 events. 9303/17307 cut-off events. For 128921/128921 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 136337 event pairs, 1660 based on Foata normal form. 160/15987 useless extension candidates. Maximal degree in co-relation 110894. Up to 8108 conditions per place. [2023-08-30 07:51:43,210 INFO L137 encePairwiseOnDemand]: 527/533 looper letters, 179 selfloop transitions, 66 changer transitions 0/245 dead transitions. [2023-08-30 07:51:43,210 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 245 transitions, 3406 flow [2023-08-30 07:51:43,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 07:51:43,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 07:51:43,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2374 transitions. [2023-08-30 07:51:43,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.404912161009722 [2023-08-30 07:51:43,214 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2374 transitions. [2023-08-30 07:51:43,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2374 transitions. [2023-08-30 07:51:43,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:51:43,214 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2374 transitions. [2023-08-30 07:51:43,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 215.8181818181818) internal successors, (2374), 11 states have internal predecessors, (2374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:51:43,221 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 533.0) internal successors, (6396), 12 states have internal predecessors, (6396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:51:43,221 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 533.0) internal successors, (6396), 12 states have internal predecessors, (6396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:51:43,222 INFO L175 Difference]: Start difference. First operand has 193 places, 177 transitions, 2245 flow. Second operand 11 states and 2374 transitions. [2023-08-30 07:51:43,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 245 transitions, 3406 flow [2023-08-30 07:51:48,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 245 transitions, 2980 flow, removed 197 selfloop flow, removed 5 redundant places. [2023-08-30 07:51:48,803 INFO L231 Difference]: Finished difference. Result has 204 places, 193 transitions, 2332 flow [2023-08-30 07:51:48,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=1951, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2332, PETRI_PLACES=204, PETRI_TRANSITIONS=193} [2023-08-30 07:51:48,803 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 156 predicate places. [2023-08-30 07:51:48,803 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 193 transitions, 2332 flow [2023-08-30 07:51:48,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 212.1) internal successors, (2121), 10 states have internal predecessors, (2121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:51:48,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:51:48,804 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 07:51:48,812 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 07:51:49,008 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 07:51:49,009 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-08-30 07:51:49,009 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:51:49,009 INFO L85 PathProgramCache]: Analyzing trace with hash -2107701323, now seen corresponding path program 6 times [2023-08-30 07:51:49,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 07:51:49,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1002638422] [2023-08-30 07:51:49,010 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 07:51:49,010 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 07:51:49,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 07:51:49,010 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 07:51:49,011 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 07:51:49,167 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-30 07:51:49,167 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 07:51:49,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 07:51:49,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:51:49,474 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 07:51:49,475 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 07:51:49,722 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 07:51:49,723 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 158 treesize of output 123 [2023-08-30 07:51:49,735 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 135 treesize of output 131 [2023-08-30 07:51:50,491 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 07:51:50,492 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 164 treesize of output 129 [2023-08-30 07:51:50,501 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 129 treesize of output 127 [2023-08-30 07:51:50,515 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 127 treesize of output 125 [2023-08-30 07:51:50,794 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 07:51:50,795 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 07:51:50,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1002638422] [2023-08-30 07:51:50,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1002638422] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 07:51:50,795 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 07:51:50,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-08-30 07:51:50,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875812129] [2023-08-30 07:51:50,795 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 07:51:50,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 07:51:50,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 07:51:50,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 07:51:50,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-08-30 07:51:51,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 533 [2023-08-30 07:51:51,582 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 193 transitions, 2332 flow. Second operand has 10 states, 10 states have (on average 211.3) internal successors, (2113), 10 states have internal predecessors, (2113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:51:51,582 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:51:51,582 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 533 [2023-08-30 07:51:51,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:51:57,387 INFO L130 PetriNetUnfolder]: 9603/18247 cut-off events. [2023-08-30 07:51:57,387 INFO L131 PetriNetUnfolder]: For 116199/116199 co-relation queries the response was YES. [2023-08-30 07:51:57,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102858 conditions, 18247 events. 9603/18247 cut-off events. For 116199/116199 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 147918 event pairs, 2140 based on Foata normal form. 480/18047 useless extension candidates. Maximal degree in co-relation 102774. Up to 10628 conditions per place. [2023-08-30 07:51:57,808 INFO L137 encePairwiseOnDemand]: 527/533 looper letters, 169 selfloop transitions, 97 changer transitions 0/266 dead transitions. [2023-08-30 07:51:57,808 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 266 transitions, 3446 flow [2023-08-30 07:51:57,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 07:51:57,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 07:51:57,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3017 transitions. [2023-08-30 07:51:57,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40431519699812385 [2023-08-30 07:51:57,814 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3017 transitions. [2023-08-30 07:51:57,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3017 transitions. [2023-08-30 07:51:57,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:51:57,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3017 transitions. [2023-08-30 07:51:57,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 215.5) internal successors, (3017), 14 states have internal predecessors, (3017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:51:57,825 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 533.0) internal successors, (7995), 15 states have internal predecessors, (7995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:51:57,826 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 533.0) internal successors, (7995), 15 states have internal predecessors, (7995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:51:57,826 INFO L175 Difference]: Start difference. First operand has 204 places, 193 transitions, 2332 flow. Second operand 14 states and 3017 transitions. [2023-08-30 07:51:57,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 266 transitions, 3446 flow [2023-08-30 07:51:59,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 266 transitions, 3298 flow, removed 35 selfloop flow, removed 4 redundant places. [2023-08-30 07:51:59,905 INFO L231 Difference]: Finished difference. Result has 217 places, 223 transitions, 2904 flow [2023-08-30 07:51:59,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=2222, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2904, PETRI_PLACES=217, PETRI_TRANSITIONS=223} [2023-08-30 07:51:59,906 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 169 predicate places. [2023-08-30 07:51:59,906 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 223 transitions, 2904 flow [2023-08-30 07:51:59,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 211.3) internal successors, (2113), 10 states have internal predecessors, (2113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:51:59,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:51:59,907 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 07:51:59,916 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 07:52:00,112 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 07:52:00,112 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-08-30 07:52:00,113 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:52:00,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1419159067, now seen corresponding path program 7 times [2023-08-30 07:52:00,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 07:52:00,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1306719259] [2023-08-30 07:52:00,113 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-30 07:52:00,113 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 07:52:00,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 07:52:00,114 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 07:52:00,116 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 07:52:00,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:52:00,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 07:52:00,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:52:00,581 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 07:52:00,581 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 151 treesize of output 116 [2023-08-30 07:52:00,587 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 116 treesize of output 114 [2023-08-30 07:52:00,594 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 114 treesize of output 112 [2023-08-30 07:52:00,627 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 07:52:00,628 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 144 treesize of output 109 [2023-08-30 07:52:00,645 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 120 treesize of output 116 [2023-08-30 07:52:00,738 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 07:52:00,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 07:52:01,055 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 07:52:01,056 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 378 treesize of output 308 [2023-08-30 07:52:01,067 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 308 treesize of output 304 [2023-08-30 07:52:01,079 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 304 treesize of output 298 [2023-08-30 07:52:02,308 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 07:52:02,308 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 07:52:02,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1306719259] [2023-08-30 07:52:02,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1306719259] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 07:52:02,308 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 07:52:02,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-08-30 07:52:02,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858449853] [2023-08-30 07:52:02,308 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 07:52:02,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 07:52:02,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 07:52:02,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 07:52:02,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-08-30 07:52:02,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 533 [2023-08-30 07:52:02,920 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 223 transitions, 2904 flow. Second operand has 10 states, 10 states have (on average 211.1) internal successors, (2111), 10 states have internal predecessors, (2111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:52:02,921 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:52:02,921 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 533 [2023-08-30 07:52:02,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:52:09,193 INFO L130 PetriNetUnfolder]: 9563/18047 cut-off events. [2023-08-30 07:52:09,193 INFO L131 PetriNetUnfolder]: For 119027/119027 co-relation queries the response was YES. [2023-08-30 07:52:09,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107022 conditions, 18047 events. 9563/18047 cut-off events. For 119027/119027 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 144800 event pairs, 2100 based on Foata normal form. 200/17567 useless extension candidates. Maximal degree in co-relation 106934. Up to 10308 conditions per place. [2023-08-30 07:52:09,357 INFO L137 encePairwiseOnDemand]: 527/533 looper letters, 176 selfloop transitions, 91 changer transitions 0/267 dead transitions. [2023-08-30 07:52:09,357 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 267 transitions, 3658 flow [2023-08-30 07:52:09,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 07:52:09,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 07:52:09,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2805 transitions. [2023-08-30 07:52:09,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40482032039255306 [2023-08-30 07:52:09,361 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2805 transitions. [2023-08-30 07:52:09,362 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2805 transitions. [2023-08-30 07:52:09,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:52:09,362 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2805 transitions. [2023-08-30 07:52:09,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 215.76923076923077) internal successors, (2805), 13 states have internal predecessors, (2805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:52:09,369 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 533.0) internal successors, (7462), 14 states have internal predecessors, (7462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:52:09,369 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 533.0) internal successors, (7462), 14 states have internal predecessors, (7462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:52:09,369 INFO L175 Difference]: Start difference. First operand has 217 places, 223 transitions, 2904 flow. Second operand 13 states and 2805 transitions. [2023-08-30 07:52:09,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 267 transitions, 3658 flow [2023-08-30 07:52:11,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 267 transitions, 3450 flow, removed 82 selfloop flow, removed 4 redundant places. [2023-08-30 07:52:11,990 INFO L231 Difference]: Finished difference. Result has 226 places, 225 transitions, 2928 flow [2023-08-30 07:52:11,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=2662, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2928, PETRI_PLACES=226, PETRI_TRANSITIONS=225} [2023-08-30 07:52:11,991 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 178 predicate places. [2023-08-30 07:52:11,991 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 225 transitions, 2928 flow [2023-08-30 07:52:11,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 211.1) internal successors, (2111), 10 states have internal predecessors, (2111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:52:11,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:52:11,992 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 07:52:12,000 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 (30)] Ended with exit code 0 [2023-08-30 07:52:12,194 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 07:52:12,194 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-08-30 07:52:12,194 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:52:12,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1161032399, now seen corresponding path program 8 times [2023-08-30 07:52:12,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 07:52:12,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [104501011] [2023-08-30 07:52:12,195 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 07:52:12,195 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 07:52:12,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 07:52:12,196 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 07:52:12,197 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 07:52:12,361 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 07:52:12,361 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 07:52:12,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 07:52:12,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:52:12,692 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 07:52:12,692 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 144 treesize of output 109 [2023-08-30 07:52:12,705 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 120 treesize of output 116 [2023-08-30 07:52:12,789 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 07:52:12,789 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 07:52:13,159 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 07:52:13,159 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 378 treesize of output 308 [2023-08-30 07:52:13,172 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 308 treesize of output 304 [2023-08-30 07:52:13,183 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 304 treesize of output 298 [2023-08-30 07:52:14,270 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 07:52:14,271 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 07:52:14,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [104501011] [2023-08-30 07:52:14,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [104501011] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 07:52:14,271 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 07:52:14,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-08-30 07:52:14,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156897951] [2023-08-30 07:52:14,271 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 07:52:14,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 07:52:14,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 07:52:14,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 07:52:14,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-08-30 07:52:15,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 533 [2023-08-30 07:52:15,202 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 225 transitions, 2928 flow. Second operand has 10 states, 10 states have (on average 211.1) internal successors, (2111), 10 states have internal predecessors, (2111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:52:15,202 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:52:15,202 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 533 [2023-08-30 07:52:15,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:52:21,029 INFO L130 PetriNetUnfolder]: 9603/18007 cut-off events. [2023-08-30 07:52:21,029 INFO L131 PetriNetUnfolder]: For 121282/121282 co-relation queries the response was YES. [2023-08-30 07:52:21,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109183 conditions, 18007 events. 9603/18007 cut-off events. For 121282/121282 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 143877 event pairs, 2160 based on Foata normal form. 160/17487 useless extension candidates. Maximal degree in co-relation 109094. Up to 10648 conditions per place. [2023-08-30 07:52:21,283 INFO L137 encePairwiseOnDemand]: 527/533 looper letters, 170 selfloop transitions, 89 changer transitions 0/259 dead transitions. [2023-08-30 07:52:21,283 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 259 transitions, 3647 flow [2023-08-30 07:52:21,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 07:52:21,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 07:52:21,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2789 transitions. [2023-08-30 07:52:21,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40251118487516235 [2023-08-30 07:52:21,287 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2789 transitions. [2023-08-30 07:52:21,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2789 transitions. [2023-08-30 07:52:21,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:52:21,288 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2789 transitions. [2023-08-30 07:52:21,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 214.53846153846155) internal successors, (2789), 13 states have internal predecessors, (2789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:52:21,295 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 533.0) internal successors, (7462), 14 states have internal predecessors, (7462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:52:21,296 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 533.0) internal successors, (7462), 14 states have internal predecessors, (7462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:52:21,296 INFO L175 Difference]: Start difference. First operand has 226 places, 225 transitions, 2928 flow. Second operand 13 states and 2789 transitions. [2023-08-30 07:52:21,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 259 transitions, 3647 flow [2023-08-30 07:52:23,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 259 transitions, 3484 flow, removed 14 selfloop flow, removed 7 redundant places. [2023-08-30 07:52:23,625 INFO L231 Difference]: Finished difference. Result has 234 places, 229 transitions, 3032 flow [2023-08-30 07:52:23,625 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=2758, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3032, PETRI_PLACES=234, PETRI_TRANSITIONS=229} [2023-08-30 07:52:23,626 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 186 predicate places. [2023-08-30 07:52:23,626 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 229 transitions, 3032 flow [2023-08-30 07:52:23,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 211.1) internal successors, (2111), 10 states have internal predecessors, (2111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:52:23,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:52:23,626 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 07:52:23,637 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 (31)] Forceful destruction successful, exit code 0 [2023-08-30 07:52:23,832 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 07:52:23,832 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-08-30 07:52:23,833 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:52:23,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1680810820, now seen corresponding path program 3 times [2023-08-30 07:52:23,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 07:52:23,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [836748645] [2023-08-30 07:52:23,833 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 07:52:23,833 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 07:52:23,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 07:52:23,834 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 07:52:23,835 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 07:52:24,002 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-30 07:52:24,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 07:52:24,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 07:52:24,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:52:24,293 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 07:52:24,293 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 07:52:24,515 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 07:52:24,516 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 164 treesize of output 129 [2023-08-30 07:52:24,521 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 129 treesize of output 127 [2023-08-30 07:52:24,527 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 127 treesize of output 125 [2023-08-30 07:52:24,752 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 07:52:24,752 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 158 treesize of output 123 [2023-08-30 07:52:24,777 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 135 treesize of output 131 [2023-08-30 07:52:25,574 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 07:52:25,575 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 07:52:25,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [836748645] [2023-08-30 07:52:25,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [836748645] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 07:52:25,575 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 07:52:25,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-08-30 07:52:25,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061774487] [2023-08-30 07:52:25,575 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 07:52:25,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 07:52:25,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 07:52:25,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 07:52:25,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-08-30 07:52:25,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 533 [2023-08-30 07:52:25,986 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 229 transitions, 3032 flow. Second operand has 12 states, 12 states have (on average 210.25) internal successors, (2523), 12 states have internal predecessors, (2523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:52:25,986 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:52:25,986 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 533 [2023-08-30 07:52:25,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:52:32,284 INFO L130 PetriNetUnfolder]: 9743/18587 cut-off events. [2023-08-30 07:52:32,285 INFO L131 PetriNetUnfolder]: For 136131/136131 co-relation queries the response was YES. [2023-08-30 07:52:32,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112386 conditions, 18587 events. 9743/18587 cut-off events. For 136131/136131 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 151165 event pairs, 2440 based on Foata normal form. 80/18067 useless extension candidates. Maximal degree in co-relation 112294. Up to 7928 conditions per place. [2023-08-30 07:52:32,513 INFO L137 encePairwiseOnDemand]: 527/533 looper letters, 204 selfloop transitions, 90 changer transitions 0/294 dead transitions. [2023-08-30 07:52:32,513 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 294 transitions, 3837 flow [2023-08-30 07:52:32,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-30 07:52:32,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-30 07:52:32,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3428 transitions. [2023-08-30 07:52:32,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40196998123827393 [2023-08-30 07:52:32,519 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3428 transitions. [2023-08-30 07:52:32,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3428 transitions. [2023-08-30 07:52:32,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:52:32,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3428 transitions. [2023-08-30 07:52:32,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 214.25) internal successors, (3428), 16 states have internal predecessors, (3428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:52:32,527 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 533.0) internal successors, (9061), 17 states have internal predecessors, (9061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:52:32,528 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 533.0) internal successors, (9061), 17 states have internal predecessors, (9061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:52:32,528 INFO L175 Difference]: Start difference. First operand has 234 places, 229 transitions, 3032 flow. Second operand 16 states and 3428 transitions. [2023-08-30 07:52:32,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 294 transitions, 3837 flow [2023-08-30 07:52:34,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 294 transitions, 3708 flow, removed 11 selfloop flow, removed 8 redundant places. [2023-08-30 07:52:34,695 INFO L231 Difference]: Finished difference. Result has 247 places, 236 transitions, 3177 flow [2023-08-30 07:52:34,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=2903, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3177, PETRI_PLACES=247, PETRI_TRANSITIONS=236} [2023-08-30 07:52:34,696 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 199 predicate places. [2023-08-30 07:52:34,696 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 236 transitions, 3177 flow [2023-08-30 07:52:34,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 210.25) internal successors, (2523), 12 states have internal predecessors, (2523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:52:34,696 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:52:34,696 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 07:52:34,705 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 (32)] Forceful destruction successful, exit code 0 [2023-08-30 07:52:34,899 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 07:52:34,899 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-08-30 07:52:34,899 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:52:34,899 INFO L85 PathProgramCache]: Analyzing trace with hash 350963898, now seen corresponding path program 4 times [2023-08-30 07:52:34,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 07:52:34,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1265993296] [2023-08-30 07:52:34,900 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 07:52:34,900 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 07:52:34,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 07:52:34,901 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 07:52:34,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2023-08-30 07:52:35,062 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 07:52:35,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 07:52:35,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 07:52:35,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:52:35,458 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 07:52:35,458 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 151 treesize of output 116 [2023-08-30 07:52:35,464 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 116 treesize of output 114 [2023-08-30 07:52:35,469 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 114 treesize of output 112 [2023-08-30 07:52:35,515 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 07:52:35,515 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 144 treesize of output 109 [2023-08-30 07:52:35,531 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 120 treesize of output 116 [2023-08-30 07:52:35,887 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 07:52:35,887 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 07:52:36,162 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 07:52:36,162 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 378 treesize of output 308 [2023-08-30 07:52:36,173 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 308 treesize of output 304 [2023-08-30 07:52:36,180 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 304 treesize of output 298 [2023-08-30 07:52:37,375 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 07:52:37,376 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 07:52:37,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1265993296] [2023-08-30 07:52:37,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1265993296] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 07:52:37,376 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 07:52:37,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-08-30 07:52:37,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567735614] [2023-08-30 07:52:37,376 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 07:52:37,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 07:52:37,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 07:52:37,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 07:52:37,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2023-08-30 07:52:39,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 533 [2023-08-30 07:52:39,229 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 236 transitions, 3177 flow. Second operand has 12 states, 12 states have (on average 210.91666666666666) internal successors, (2531), 12 states have internal predecessors, (2531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:52:39,229 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:52:39,229 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 533 [2023-08-30 07:52:39,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:52:47,939 INFO L130 PetriNetUnfolder]: 11063/20667 cut-off events. [2023-08-30 07:52:47,940 INFO L131 PetriNetUnfolder]: For 161336/161336 co-relation queries the response was YES. [2023-08-30 07:52:48,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126951 conditions, 20667 events. 11063/20667 cut-off events. For 161336/161336 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 167383 event pairs, 2004 based on Foata normal form. 240/20187 useless extension candidates. Maximal degree in co-relation 126854. Up to 8128 conditions per place. [2023-08-30 07:52:48,312 INFO L137 encePairwiseOnDemand]: 527/533 looper letters, 182 selfloop transitions, 138 changer transitions 0/320 dead transitions. [2023-08-30 07:52:48,312 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 320 transitions, 4443 flow [2023-08-30 07:52:48,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-30 07:52:48,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-30 07:52:48,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3678 transitions. [2023-08-30 07:52:48,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4059154618695508 [2023-08-30 07:52:48,317 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3678 transitions. [2023-08-30 07:52:48,317 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3678 transitions. [2023-08-30 07:52:48,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:52:48,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3678 transitions. [2023-08-30 07:52:48,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 216.35294117647058) internal successors, (3678), 17 states have internal predecessors, (3678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:52:48,331 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 533.0) internal successors, (9594), 18 states have internal predecessors, (9594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:52:48,331 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 533.0) internal successors, (9594), 18 states have internal predecessors, (9594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:52:48,332 INFO L175 Difference]: Start difference. First operand has 247 places, 236 transitions, 3177 flow. Second operand 17 states and 3678 transitions. [2023-08-30 07:52:48,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 320 transitions, 4443 flow [2023-08-30 07:52:50,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 320 transitions, 4211 flow, removed 15 selfloop flow, removed 9 redundant places. [2023-08-30 07:52:50,802 INFO L231 Difference]: Finished difference. Result has 258 places, 262 transitions, 3701 flow [2023-08-30 07:52:50,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=2981, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3701, PETRI_PLACES=258, PETRI_TRANSITIONS=262} [2023-08-30 07:52:50,803 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 210 predicate places. [2023-08-30 07:52:50,803 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 262 transitions, 3701 flow [2023-08-30 07:52:50,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 210.91666666666666) internal successors, (2531), 12 states have internal predecessors, (2531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:52:50,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:52:50,804 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 07:52:50,814 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 (33)] Forceful destruction successful, exit code 0 [2023-08-30 07:52:51,009 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 07:52:51,009 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-08-30 07:52:51,009 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:52:51,009 INFO L85 PathProgramCache]: Analyzing trace with hash 760639718, now seen corresponding path program 5 times [2023-08-30 07:52:51,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 07:52:51,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1280387585] [2023-08-30 07:52:51,010 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 07:52:51,010 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 07:52:51,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 07:52:51,011 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 07:52:51,011 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 07:52:51,336 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 07:52:51,336 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 07:52:51,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-30 07:52:51,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:56:19,364 WARN L230 Executor]: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2023-08-30 07:56:19,365 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2023-08-30 07:56:19,365 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 07:56:19,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1280387585] [2023-08-30 07:56:19,366 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2023-08-30 07:56:19,378 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 07:56:19,566 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 07:56:19,567 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:139) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:85) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:935) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:774) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:362) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:311) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:582) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:199) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:299) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:210) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1465) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:658) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:239) ... 44 more [2023-08-30 07:56:19,569 INFO L158 Benchmark]: Toolchain (without parser) took 456193.37ms. Allocated memory was 88.1MB in the beginning and 7.2GB in the end (delta: 7.1GB). Free memory was 66.0MB in the beginning and 5.0GB in the end (delta: -4.9GB). Peak memory consumption was 2.2GB. Max. memory is 16.1GB. [2023-08-30 07:56:19,570 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 62.9MB. Free memory was 40.7MB in the beginning and 40.6MB in the end (delta: 57.3kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 07:56:19,570 INFO L158 Benchmark]: CACSL2BoogieTranslator took 374.63ms. Allocated memory is still 88.1MB. Free memory was 65.9MB in the beginning and 51.8MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-08-30 07:56:19,570 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.59ms. Allocated memory is still 88.1MB. Free memory was 51.6MB in the beginning and 49.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 07:56:19,570 INFO L158 Benchmark]: Boogie Preprocessor took 44.00ms. Allocated memory is still 88.1MB. Free memory was 49.4MB in the beginning and 47.5MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 07:56:19,570 INFO L158 Benchmark]: RCFGBuilder took 740.21ms. Allocated memory is still 88.1MB. Free memory was 47.5MB in the beginning and 42.1MB in the end (delta: 5.4MB). Peak memory consumption was 6.0MB. Max. memory is 16.1GB. [2023-08-30 07:56:19,571 INFO L158 Benchmark]: TraceAbstraction took 454963.52ms. Allocated memory was 88.1MB in the beginning and 7.2GB in the end (delta: 7.1GB). Free memory was 41.7MB in the beginning and 5.0GB in the end (delta: -4.9GB). Peak memory consumption was 2.2GB. Max. memory is 16.1GB. [2023-08-30 07:56:19,572 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 62.9MB. Free memory was 40.7MB in the beginning and 40.6MB in the end (delta: 57.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 374.63ms. Allocated memory is still 88.1MB. Free memory was 65.9MB in the beginning and 51.8MB in the end (delta: 14.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.59ms. Allocated memory is still 88.1MB. Free memory was 51.6MB in the beginning and 49.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.00ms. Allocated memory is still 88.1MB. Free memory was 49.4MB in the beginning and 47.5MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 740.21ms. Allocated memory is still 88.1MB. Free memory was 47.5MB in the beginning and 42.1MB in the end (delta: 5.4MB). Peak memory consumption was 6.0MB. Max. memory is 16.1GB. * TraceAbstraction took 454963.52ms. Allocated memory was 88.1MB in the beginning and 7.2GB in the end (delta: 7.1GB). Free memory was 41.7MB in the beginning and 5.0GB in the end (delta: -4.9GB). Peak memory consumption was 2.2GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 40.1s, 230 PlacesBefore, 48 PlacesAfterwards, 244 TransitionsBefore, 44 TransitionsAfterwards, 7800 CoEnabledTransitionPairs, 8 FixpointIterations, 75 TrivialSequentialCompositions, 159 ConcurrentSequentialCompositions, 17 TrivialYvCompositions, 14 ConcurrentYvCompositions, 18 ChoiceCompositions, 283 TotalNumberOfCompositions, 7465 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 7385, independent: 7377, independent conditional: 0, independent unconditional: 7377, dependent: 8, dependent conditional: 0, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 4158, independent: 4154, independent conditional: 0, independent unconditional: 4154, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 7385, independent: 3223, independent conditional: 0, independent unconditional: 3223, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 4158, unknown conditional: 0, unknown unconditional: 4158] , Statistics on independence cache: Total cache size (in pairs): 79, Positive cache size: 78, Positive conditional cache size: 0, Positive unconditional cache size: 78, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory")