./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 BEFORE --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 BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 04:20:56,911 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 04:20:56,913 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 04:20:56,936 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 04:20:56,941 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 04:20:56,944 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 04:20:56,947 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 04:20:56,949 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 04:20:56,951 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 04:20:56,955 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 04:20:56,956 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 04:20:56,958 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 04:20:56,958 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 04:20:56,959 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 04:20:56,961 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 04:20:56,965 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 04:20:56,966 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 04:20:56,967 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 04:20:56,969 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 04:20:56,972 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 04:20:56,973 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 04:20:56,974 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 04:20:56,975 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 04:20:56,982 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 04:20:56,988 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 04:20:56,988 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 04:20:56,988 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 04:20:56,990 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 04:20:56,990 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 04:20:56,991 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 04:20:56,991 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 04:20:56,996 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 04:20:56,998 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 04:20:56,999 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 04:20:57,000 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 04:20:57,000 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 04:20:57,001 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 04:20:57,001 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 04:20:57,001 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 04:20:57,003 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 04:20:57,004 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 04:20:57,006 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-09-01 04:20:57,034 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 04:20:57,035 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 04:20:57,035 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 04:20:57,036 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 04:20:57,037 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 04:20:57,037 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 04:20:57,037 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 04:20:57,037 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 04:20:57,037 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 04:20:57,038 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 04:20:57,039 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 04:20:57,039 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 04:20:57,039 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 04:20:57,039 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 04:20:57,039 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 04:20:57,039 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-09-01 04:20:57,040 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-09-01 04:20:57,040 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-09-01 04:20:57,040 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 04:20:57,040 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-09-01 04:20:57,040 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 04:20:57,040 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 04:20:57,040 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 04:20:57,041 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 04:20:57,041 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 04:20:57,041 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 04:20:57,041 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 04:20:57,041 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 04:20:57,041 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 04:20:57,042 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 04:20:57,042 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 04:20:57,042 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 04:20:57,042 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 04:20:57,042 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 04:20:57,043 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4755329f7559a8be1422f8772c1ed30abe185c2742a237de140cc196ec4e9010 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 04:20:57,273 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 04:20:57,288 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 04:20:57,290 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 04:20:57,291 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 04:20:57,291 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 04:20:57,292 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/unroll-cond-4.wvr.c [2023-09-01 04:20:58,274 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 04:20:58,546 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 04:20:58,546 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-cond-4.wvr.c [2023-09-01 04:20:58,551 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f24e691db/1e90a4e2377e40e9b3ac982ada450a43/FLAG5dc91d944 [2023-09-01 04:20:58,571 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f24e691db/1e90a4e2377e40e9b3ac982ada450a43 [2023-09-01 04:20:58,573 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 04:20:58,574 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 04:20:58,574 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 04:20:58,574 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 04:20:58,577 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 04:20:58,577 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 04:20:58" (1/1) ... [2023-09-01 04:20:58,578 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@363a34e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:20:58, skipping insertion in model container [2023-09-01 04:20:58,578 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 04:20:58" (1/1) ... [2023-09-01 04:20:58,582 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 04:20:58,597 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 04:20:58,738 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] [2023-09-01 04:20:58,745 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 04:20:58,753 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) [2023-09-01 04:20:58,755 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@45fecfa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:20:58, skipping insertion in model container [2023-09-01 04:20:58,755 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 04:20:58,755 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-09-01 04:20:58,757 INFO L158 Benchmark]: Toolchain (without parser) took 182.46ms. Allocated memory is still 88.1MB. Free memory was 65.9MB in the beginning and 55.9MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-09-01 04:20:58,757 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 69.2MB. Free memory was 47.9MB in the beginning and 47.9MB in the end (delta: 46.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 04:20:58,758 INFO L158 Benchmark]: CACSL2BoogieTranslator took 181.05ms. Allocated memory is still 88.1MB. Free memory was 65.9MB in the beginning and 55.9MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-09-01 04:20:58,759 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 69.2MB. Free memory was 47.9MB in the beginning and 47.9MB in the end (delta: 46.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 181.05ms. Allocated memory is still 88.1MB. Free memory was 65.9MB in the beginning and 55.9MB in the end (delta: 9.9MB). 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 BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 04:21:00,398 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 04:21:00,399 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 04:21:00,445 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 04:21:00,446 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 04:21:00,447 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 04:21:00,448 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 04:21:00,449 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 04:21:00,450 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 04:21:00,451 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 04:21:00,452 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 04:21:00,452 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 04:21:00,453 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 04:21:00,453 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 04:21:00,454 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 04:21:00,455 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 04:21:00,455 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 04:21:00,456 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 04:21:00,457 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 04:21:00,458 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 04:21:00,460 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 04:21:00,460 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 04:21:00,461 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 04:21:00,462 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 04:21:00,465 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 04:21:00,465 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 04:21:00,465 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 04:21:00,466 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 04:21:00,470 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 04:21:00,470 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 04:21:00,471 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 04:21:00,471 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 04:21:00,472 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 04:21:00,472 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 04:21:00,473 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 04:21:00,473 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 04:21:00,474 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 04:21:00,474 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 04:21:00,474 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 04:21:00,475 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 04:21:00,475 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 04:21:00,489 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-09-01 04:21:00,508 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 04:21:00,509 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 04:21:00,509 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 04:21:00,509 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 04:21:00,510 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 04:21:00,510 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 04:21:00,510 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 04:21:00,510 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 04:21:00,511 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 04:21:00,511 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 04:21:00,511 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 04:21:00,511 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 04:21:00,511 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 04:21:00,511 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 04:21:00,512 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 04:21:00,512 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-09-01 04:21:00,512 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-09-01 04:21:00,512 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-09-01 04:21:00,512 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 04:21:00,512 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-09-01 04:21:00,513 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-09-01 04:21:00,513 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-09-01 04:21:00,513 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 04:21:00,513 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 04:21:00,513 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 04:21:00,513 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 04:21:00,514 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 04:21:00,514 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 04:21:00,514 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 04:21:00,514 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 04:21:00,514 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-09-01 04:21:00,514 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-09-01 04:21:00,515 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 04:21:00,515 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 04:21:00,515 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 04:21:00,515 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-09-01 04:21:00,515 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 04:21:00,515 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4755329f7559a8be1422f8772c1ed30abe185c2742a237de140cc196ec4e9010 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 04:21:00,827 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 04:21:00,853 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 04:21:00,855 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 04:21:00,856 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 04:21:00,857 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 04:21:00,862 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/unroll-cond-4.wvr.c [2023-09-01 04:21:02,081 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 04:21:02,298 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 04:21:02,298 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-cond-4.wvr.c [2023-09-01 04:21:02,304 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/686fcb120/2cfbeb6a45aa4a87a8934a5516c79a0f/FLAG52e5bd0ea [2023-09-01 04:21:02,315 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/686fcb120/2cfbeb6a45aa4a87a8934a5516c79a0f [2023-09-01 04:21:02,316 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 04:21:02,317 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 04:21:02,319 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 04:21:02,319 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 04:21:02,324 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 04:21:02,324 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 04:21:02" (1/1) ... [2023-09-01 04:21:02,325 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e29117 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:21:02, skipping insertion in model container [2023-09-01 04:21:02,327 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 04:21:02" (1/1) ... [2023-09-01 04:21:02,331 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 04:21:02,342 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 04:21:02,458 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] [2023-09-01 04:21:02,465 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 04:21:02,480 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-09-01 04:21:02,489 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 04:21:02,499 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] [2023-09-01 04:21:02,512 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 04:21:02,518 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 04:21:02,545 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] [2023-09-01 04:21:02,551 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 04:21:02,563 INFO L208 MainTranslator]: Completed translation [2023-09-01 04:21:02,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:21:02 WrapperNode [2023-09-01 04:21:02,573 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 04:21:02,574 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 04:21:02,574 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 04:21:02,574 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 04:21:02,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:21:02" (1/1) ... [2023-09-01 04:21:02,596 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:21:02" (1/1) ... [2023-09-01 04:21:02,620 INFO L138 Inliner]: procedures = 26, calls = 41, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 184 [2023-09-01 04:21:02,620 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 04:21:02,621 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 04:21:02,621 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 04:21:02,621 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 04:21:02,627 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:21:02" (1/1) ... [2023-09-01 04:21:02,627 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:21:02" (1/1) ... [2023-09-01 04:21:02,638 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:21:02" (1/1) ... [2023-09-01 04:21:02,639 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:21:02" (1/1) ... [2023-09-01 04:21:02,649 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:21:02" (1/1) ... [2023-09-01 04:21:02,654 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:21:02" (1/1) ... [2023-09-01 04:21:02,656 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:21:02" (1/1) ... [2023-09-01 04:21:02,659 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:21:02" (1/1) ... [2023-09-01 04:21:02,661 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 04:21:02,663 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 04:21:02,663 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 04:21:02,663 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 04:21:02,664 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:21:02" (1/1) ... [2023-09-01 04:21:02,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 04:21:02,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:21:02,687 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) [2023-09-01 04:21:02,689 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 [2023-09-01 04:21:02,712 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 04:21:02,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-09-01 04:21:02,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 04:21:02,713 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-09-01 04:21:02,713 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 04:21:02,713 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 04:21:02,713 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 04:21:02,713 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 04:21:02,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 04:21:02,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 04:21:02,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 04:21:02,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 04:21:02,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-09-01 04:21:02,715 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 04:21:02,865 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 04:21:02,869 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 04:21:03,364 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 04:21:03,370 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 04:21:03,371 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-09-01 04:21:03,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 04:21:03 BoogieIcfgContainer [2023-09-01 04:21:03,373 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 04:21:03,374 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 04:21:03,374 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 04:21:03,377 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 04:21:03,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 04:21:02" (1/3) ... [2023-09-01 04:21:03,378 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12ad0ece and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 04:21:03, skipping insertion in model container [2023-09-01 04:21:03,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:21:02" (2/3) ... [2023-09-01 04:21:03,378 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12ad0ece and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 04:21:03, skipping insertion in model container [2023-09-01 04:21:03,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 04:21:03" (3/3) ... [2023-09-01 04:21:03,379 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-cond-4.wvr.c [2023-09-01 04:21:03,392 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 04:21:03,392 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2023-09-01 04:21:03,393 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 04:21:03,484 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 04:21:03,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 236 places, 250 transitions, 516 flow [2023-09-01 04:21:03,565 INFO L130 PetriNetUnfolder]: 21/248 cut-off events. [2023-09-01 04:21:03,565 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 04:21:03,571 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. [2023-09-01 04:21:03,571 INFO L82 GeneralOperation]: Start removeDead. Operand has 236 places, 250 transitions, 516 flow [2023-09-01 04:21:03,582 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 230 places, 244 transitions, 500 flow [2023-09-01 04:21:03,585 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 04:21:03,591 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 230 places, 244 transitions, 500 flow [2023-09-01 04:21:03,594 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 230 places, 244 transitions, 500 flow [2023-09-01 04:21:03,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 230 places, 244 transitions, 500 flow [2023-09-01 04:21:03,624 INFO L130 PetriNetUnfolder]: 21/244 cut-off events. [2023-09-01 04:21:03,624 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 04:21:03,626 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. [2023-09-01 04:21:03,630 INFO L119 LiptonReduction]: Number of co-enabled transitions 7800 [2023-09-01 04:21:43,636 INFO L134 LiptonReduction]: Checked pairs total: 7465 [2023-09-01 04:21:43,636 INFO L136 LiptonReduction]: Total number of compositions: 283 [2023-09-01 04:21:43,646 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 04:21:43,651 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;@202ff467, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 04:21:43,652 INFO L358 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2023-09-01 04:21:43,657 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-09-01 04:21:43,657 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 04:21:43,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:21:43,658 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-09-01 04:21:43,658 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-09-01 04:21:43,663 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:21:43,663 INFO L85 PathProgramCache]: Analyzing trace with hash 32770, now seen corresponding path program 1 times [2023-09-01 04:21:43,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 04:21:43,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1194128025] [2023-09-01 04:21:43,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:21:43,697 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 [2023-09-01 04:21:43,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 04:21:43,733 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) [2023-09-01 04:21:43,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-09-01 04:21:43,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:21:43,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 9 conjunts are in the unsatisfiable core [2023-09-01 04:21:43,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:21:43,963 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2023-09-01 04:21:43,964 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 [2023-09-01 04:21:44,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:21:44,013 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 04:21:44,014 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 04:21:44,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1194128025] [2023-09-01 04:21:44,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1194128025] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:21:44,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:21:44,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 04:21:44,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372792757] [2023-09-01 04:21:44,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:21:44,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 04:21:44,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 04:21:44,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 04:21:44,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 04:21:44,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 533 [2023-09-01 04:21:44,294 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) [2023-09-01 04:21:44,294 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:21:44,294 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 533 [2023-09-01 04:21:44,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:21:45,087 INFO L130 PetriNetUnfolder]: 1912/2639 cut-off events. [2023-09-01 04:21:45,088 INFO L131 PetriNetUnfolder]: For 36/36 co-relation queries the response was YES. [2023-09-01 04:21:45,091 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. [2023-09-01 04:21:45,102 INFO L137 encePairwiseOnDemand]: 526/533 looper letters, 72 selfloop transitions, 2 changer transitions 0/76 dead transitions. [2023-09-01 04:21:45,103 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 76 transitions, 324 flow [2023-09-01 04:21:45,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 04:21:45,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 04:21:45,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 755 transitions. [2023-09-01 04:21:45,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4721701063164478 [2023-09-01 04:21:45,118 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 755 transitions. [2023-09-01 04:21:45,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 755 transitions. [2023-09-01 04:21:45,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:21:45,123 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 755 transitions. [2023-09-01 04:21:45,127 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) [2023-09-01 04:21:45,133 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) [2023-09-01 04:21:45,135 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) [2023-09-01 04:21:45,136 INFO L175 Difference]: Start difference. First operand has 48 places, 44 transitions, 100 flow. Second operand 3 states and 755 transitions. [2023-09-01 04:21:45,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 76 transitions, 324 flow [2023-09-01 04:21:45,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 76 transitions, 308 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-09-01 04:21:45,146 INFO L231 Difference]: Finished difference. Result has 43 places, 41 transitions, 96 flow [2023-09-01 04:21:45,147 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} [2023-09-01 04:21:45,151 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -5 predicate places. [2023-09-01 04:21:45,152 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 41 transitions, 96 flow [2023-09-01 04:21:45,152 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) [2023-09-01 04:21:45,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:21:45,153 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-09-01 04:21:45,170 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-09-01 04:21:45,361 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 [2023-09-01 04:21:45,362 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-09-01 04:21:45,363 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:21:45,363 INFO L85 PathProgramCache]: Analyzing trace with hash 32851, now seen corresponding path program 1 times [2023-09-01 04:21:45,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 04:21:45,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [870915961] [2023-09-01 04:21:45,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:21:45,364 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 04:21:45,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 04:21:45,365 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) [2023-09-01 04:21:45,367 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 [2023-09-01 04:21:45,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:21:45,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 8 conjunts are in the unsatisfiable core [2023-09-01 04:21:45,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:21:45,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:21:45,477 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 04:21:45,477 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 04:21:45,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [870915961] [2023-09-01 04:21:45,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [870915961] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:21:45,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:21:45,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 04:21:45,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126306789] [2023-09-01 04:21:45,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:21:45,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 04:21:45,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 04:21:45,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 04:21:45,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 04:21:45,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 533 [2023-09-01 04:21:45,524 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) [2023-09-01 04:21:45,524 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:21:45,524 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 533 [2023-09-01 04:21:45,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:21:45,944 INFO L130 PetriNetUnfolder]: 966/1332 cut-off events. [2023-09-01 04:21:45,944 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 04:21:45,945 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. [2023-09-01 04:21:45,949 INFO L137 encePairwiseOnDemand]: 528/533 looper letters, 38 selfloop transitions, 2 changer transitions 0/42 dead transitions. [2023-09-01 04:21:45,949 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 42 transitions, 178 flow [2023-09-01 04:21:45,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 04:21:45,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 04:21:45,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 721 transitions. [2023-09-01 04:21:45,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4509068167604753 [2023-09-01 04:21:45,951 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 721 transitions. [2023-09-01 04:21:45,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 721 transitions. [2023-09-01 04:21:45,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:21:45,952 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 721 transitions. [2023-09-01 04:21:45,953 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) [2023-09-01 04:21:45,955 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) [2023-09-01 04:21:45,956 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) [2023-09-01 04:21:45,956 INFO L175 Difference]: Start difference. First operand has 43 places, 41 transitions, 96 flow. Second operand 3 states and 721 transitions. [2023-09-01 04:21:45,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 42 transitions, 178 flow [2023-09-01 04:21:45,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 42 transitions, 176 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 04:21:45,957 INFO L231 Difference]: Finished difference. Result has 45 places, 41 transitions, 106 flow [2023-09-01 04:21:45,958 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} [2023-09-01 04:21:45,958 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -3 predicate places. [2023-09-01 04:21:45,958 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 41 transitions, 106 flow [2023-09-01 04:21:45,959 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) [2023-09-01 04:21:45,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:21:45,959 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-09-01 04:21:45,975 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 [2023-09-01 04:21:46,166 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 [2023-09-01 04:21:46,167 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-09-01 04:21:46,171 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:21:46,171 INFO L85 PathProgramCache]: Analyzing trace with hash 32769, now seen corresponding path program 1 times [2023-09-01 04:21:46,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 04:21:46,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [156914489] [2023-09-01 04:21:46,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:21:46,172 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 [2023-09-01 04:21:46,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 04:21:46,192 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) [2023-09-01 04:21:46,193 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 [2023-09-01 04:21:46,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:21:46,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 3 conjunts are in the unsatisfiable core [2023-09-01 04:21:46,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:21:46,275 INFO L321 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2023-09-01 04:21:46,276 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 [2023-09-01 04:21:46,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:21:46,285 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 04:21:46,285 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 04:21:46,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [156914489] [2023-09-01 04:21:46,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [156914489] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:21:46,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:21:46,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 04:21:46,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888731433] [2023-09-01 04:21:46,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:21:46,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 04:21:46,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 04:21:46,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 04:21:46,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 04:21:46,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 533 [2023-09-01 04:21:46,377 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) [2023-09-01 04:21:46,377 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:21:46,377 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 533 [2023-09-01 04:21:46,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:21:46,758 INFO L130 PetriNetUnfolder]: 966/1330 cut-off events. [2023-09-01 04:21:46,758 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 04:21:46,759 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. [2023-09-01 04:21:46,763 INFO L137 encePairwiseOnDemand]: 531/533 looper letters, 37 selfloop transitions, 1 changer transitions 0/40 dead transitions. [2023-09-01 04:21:46,763 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 40 transitions, 180 flow [2023-09-01 04:21:46,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 04:21:46,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 04:21:46,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 710 transitions. [2023-09-01 04:21:46,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4440275171982489 [2023-09-01 04:21:46,765 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 710 transitions. [2023-09-01 04:21:46,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 710 transitions. [2023-09-01 04:21:46,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:21:46,766 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 710 transitions. [2023-09-01 04:21:46,767 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) [2023-09-01 04:21:46,769 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) [2023-09-01 04:21:46,770 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) [2023-09-01 04:21:46,770 INFO L175 Difference]: Start difference. First operand has 45 places, 41 transitions, 106 flow. Second operand 3 states and 710 transitions. [2023-09-01 04:21:46,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 40 transitions, 180 flow [2023-09-01 04:21:46,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 40 transitions, 174 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-09-01 04:21:46,771 INFO L231 Difference]: Finished difference. Result has 44 places, 40 transitions, 100 flow [2023-09-01 04:21:46,772 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} [2023-09-01 04:21:46,772 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -4 predicate places. [2023-09-01 04:21:46,772 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 40 transitions, 100 flow [2023-09-01 04:21:46,773 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) [2023-09-01 04:21:46,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:21:46,773 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 04:21:46,795 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 [2023-09-01 04:21:46,980 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 [2023-09-01 04:21:46,980 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-09-01 04:21:46,981 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:21:46,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1019190, now seen corresponding path program 1 times [2023-09-01 04:21:46,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 04:21:46,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1365392439] [2023-09-01 04:21:46,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:21:46,982 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 [2023-09-01 04:21:46,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 04:21:46,985 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) [2023-09-01 04:21:46,986 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 [2023-09-01 04:21:47,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:21:47,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 11 conjunts are in the unsatisfiable core [2023-09-01 04:21:47,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:21:47,098 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2023-09-01 04:21:47,100 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 [2023-09-01 04:21:47,148 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:21:47,148 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:21:47,306 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:21:47,307 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 04:21:47,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1365392439] [2023-09-01 04:21:47,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1365392439] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:21:47,307 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-09-01 04:21:47,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-09-01 04:21:47,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911932727] [2023-09-01 04:21:47,307 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-09-01 04:21:47,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 04:21:47,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 04:21:47,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 04:21:47,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-09-01 04:21:48,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 533 [2023-09-01 04:21:48,172 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) [2023-09-01 04:21:48,172 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:21:48,172 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 533 [2023-09-01 04:21:48,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:21:49,052 INFO L130 PetriNetUnfolder]: 1918/2646 cut-off events. [2023-09-01 04:21:49,053 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 04:21:49,055 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. [2023-09-01 04:21:49,062 INFO L137 encePairwiseOnDemand]: 527/533 looper letters, 70 selfloop transitions, 11 changer transitions 0/83 dead transitions. [2023-09-01 04:21:49,063 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 83 transitions, 376 flow [2023-09-01 04:21:49,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 04:21:49,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 04:21:49,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1398 transitions. [2023-09-01 04:21:49,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4371482176360225 [2023-09-01 04:21:49,066 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1398 transitions. [2023-09-01 04:21:49,067 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1398 transitions. [2023-09-01 04:21:49,067 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:21:49,067 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1398 transitions. [2023-09-01 04:21:49,069 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) [2023-09-01 04:21:49,073 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) [2023-09-01 04:21:49,074 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) [2023-09-01 04:21:49,074 INFO L175 Difference]: Start difference. First operand has 44 places, 40 transitions, 100 flow. Second operand 6 states and 1398 transitions. [2023-09-01 04:21:49,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 83 transitions, 376 flow [2023-09-01 04:21:49,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 83 transitions, 375 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 04:21:49,078 INFO L231 Difference]: Finished difference. Result has 52 places, 49 transitions, 197 flow [2023-09-01 04:21:49,078 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} [2023-09-01 04:21:49,079 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 4 predicate places. [2023-09-01 04:21:49,079 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 49 transitions, 197 flow [2023-09-01 04:21:49,080 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) [2023-09-01 04:21:49,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:21:49,080 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 04:21:49,090 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 (5)] Ended with exit code 0 [2023-09-01 04:21:49,288 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 [2023-09-01 04:21:49,288 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-09-01 04:21:49,289 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:21:49,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1019271, now seen corresponding path program 1 times [2023-09-01 04:21:49,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 04:21:49,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2140602074] [2023-09-01 04:21:49,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:21:49,289 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 [2023-09-01 04:21:49,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 04:21:49,291 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) [2023-09-01 04:21:49,293 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 [2023-09-01 04:21:49,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:21:49,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 9 conjunts are in the unsatisfiable core [2023-09-01 04:21:49,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:21:49,387 INFO L321 Elim1Store]: treesize reduction 50, result has 23.1 percent of original size [2023-09-01 04:21:49,387 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 [2023-09-01 04:21:49,418 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 04:21:49,418 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 04:21:49,418 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 04:21:49,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2140602074] [2023-09-01 04:21:49,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2140602074] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:21:49,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:21:49,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 04:21:49,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701986490] [2023-09-01 04:21:49,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:21:49,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 04:21:49,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 04:21:49,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 04:21:49,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 04:21:49,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 533 [2023-09-01 04:21:49,538 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) [2023-09-01 04:21:49,538 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:21:49,538 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 533 [2023-09-01 04:21:49,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:21:49,997 INFO L130 PetriNetUnfolder]: 1459/2045 cut-off events. [2023-09-01 04:21:49,997 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2023-09-01 04:21:49,998 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. [2023-09-01 04:21:50,008 INFO L137 encePairwiseOnDemand]: 530/533 looper letters, 42 selfloop transitions, 1 changer transitions 0/45 dead transitions. [2023-09-01 04:21:50,008 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 45 transitions, 257 flow [2023-09-01 04:21:50,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 04:21:50,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 04:21:50,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 709 transitions. [2023-09-01 04:21:50,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4434021263289556 [2023-09-01 04:21:50,011 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 709 transitions. [2023-09-01 04:21:50,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 709 transitions. [2023-09-01 04:21:50,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:21:50,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 709 transitions. [2023-09-01 04:21:50,013 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) [2023-09-01 04:21:50,016 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) [2023-09-01 04:21:50,017 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) [2023-09-01 04:21:50,017 INFO L175 Difference]: Start difference. First operand has 52 places, 49 transitions, 197 flow. Second operand 3 states and 709 transitions. [2023-09-01 04:21:50,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 45 transitions, 257 flow [2023-09-01 04:21:50,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 45 transitions, 239 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-09-01 04:21:50,019 INFO L231 Difference]: Finished difference. Result has 51 places, 45 transitions, 155 flow [2023-09-01 04:21:50,019 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} [2023-09-01 04:21:50,020 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 3 predicate places. [2023-09-01 04:21:50,020 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 45 transitions, 155 flow [2023-09-01 04:21:50,020 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) [2023-09-01 04:21:50,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:21:50,021 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 04:21:50,040 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 (6)] Ended with exit code 0 [2023-09-01 04:21:50,230 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 [2023-09-01 04:21:50,230 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-09-01 04:21:50,231 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:21:50,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1019272, now seen corresponding path program 1 times [2023-09-01 04:21:50,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 04:21:50,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [617497366] [2023-09-01 04:21:50,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:21:50,232 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 04:21:50,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 04:21:50,233 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) [2023-09-01 04:21:50,236 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 [2023-09-01 04:21:50,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:21:50,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 13 conjunts are in the unsatisfiable core [2023-09-01 04:21:50,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:21:50,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 04:21:50,356 INFO L321 Elim1Store]: treesize reduction 24, result has 44.2 percent of original size [2023-09-01 04:21:50,356 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 [2023-09-01 04:21:50,364 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 [2023-09-01 04:21:50,445 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 04:21:50,445 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 04:21:50,445 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 04:21:50,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [617497366] [2023-09-01 04:21:50,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [617497366] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:21:50,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:21:50,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 04:21:50,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44186160] [2023-09-01 04:21:50,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:21:50,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 04:21:50,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 04:21:50,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 04:21:50,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 04:21:50,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 533 [2023-09-01 04:21:50,662 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) [2023-09-01 04:21:50,662 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:21:50,662 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 533 [2023-09-01 04:21:50,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:21:51,072 INFO L130 PetriNetUnfolder]: 981/1425 cut-off events. [2023-09-01 04:21:51,072 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2023-09-01 04:21:51,073 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. [2023-09-01 04:21:51,077 INFO L137 encePairwiseOnDemand]: 530/533 looper letters, 38 selfloop transitions, 1 changer transitions 0/41 dead transitions. [2023-09-01 04:21:51,077 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 41 transitions, 211 flow [2023-09-01 04:21:51,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 04:21:51,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 04:21:51,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 707 transitions. [2023-09-01 04:21:51,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.442151344590369 [2023-09-01 04:21:51,081 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 707 transitions. [2023-09-01 04:21:51,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 707 transitions. [2023-09-01 04:21:51,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:21:51,081 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 707 transitions. [2023-09-01 04:21:51,083 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) [2023-09-01 04:21:51,084 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) [2023-09-01 04:21:51,085 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) [2023-09-01 04:21:51,085 INFO L175 Difference]: Start difference. First operand has 51 places, 45 transitions, 155 flow. Second operand 3 states and 707 transitions. [2023-09-01 04:21:51,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 41 transitions, 211 flow [2023-09-01 04:21:51,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 41 transitions, 210 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 04:21:51,086 INFO L231 Difference]: Finished difference. Result has 50 places, 41 transitions, 134 flow [2023-09-01 04:21:51,086 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} [2023-09-01 04:21:51,087 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 2 predicate places. [2023-09-01 04:21:51,087 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 41 transitions, 134 flow [2023-09-01 04:21:51,087 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) [2023-09-01 04:21:51,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:21:51,088 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 04:21:51,109 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 [2023-09-01 04:21:51,295 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 [2023-09-01 04:21:51,296 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-09-01 04:21:51,296 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:21:51,296 INFO L85 PathProgramCache]: Analyzing trace with hash 979544733, now seen corresponding path program 1 times [2023-09-01 04:21:51,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 04:21:51,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1689543362] [2023-09-01 04:21:51,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:21:51,297 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 [2023-09-01 04:21:51,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 04:21:51,298 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) [2023-09-01 04:21:51,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-09-01 04:21:51,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:21:51,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 04:21:51,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:21:51,388 INFO L321 Elim1Store]: treesize reduction 43, result has 33.8 percent of original size [2023-09-01 04:21:51,388 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 [2023-09-01 04:21:51,410 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 04:21:51,411 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 04:21:51,412 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 04:21:51,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1689543362] [2023-09-01 04:21:51,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1689543362] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:21:51,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:21:51,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 04:21:51,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814287088] [2023-09-01 04:21:51,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:21:51,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 04:21:51,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 04:21:51,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 04:21:51,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 04:21:51,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 533 [2023-09-01 04:21:51,527 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) [2023-09-01 04:21:51,527 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:21:51,527 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 533 [2023-09-01 04:21:51,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:21:51,940 INFO L130 PetriNetUnfolder]: 915/1321 cut-off events. [2023-09-01 04:21:51,940 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2023-09-01 04:21:51,941 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. [2023-09-01 04:21:51,954 INFO L137 encePairwiseOnDemand]: 530/533 looper letters, 36 selfloop transitions, 1 changer transitions 0/39 dead transitions. [2023-09-01 04:21:51,954 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 39 transitions, 204 flow [2023-09-01 04:21:51,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 04:21:51,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 04:21:51,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 696 transitions. [2023-09-01 04:21:51,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4352720450281426 [2023-09-01 04:21:51,959 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 696 transitions. [2023-09-01 04:21:51,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 696 transitions. [2023-09-01 04:21:51,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:21:51,961 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 696 transitions. [2023-09-01 04:21:51,962 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) [2023-09-01 04:21:51,966 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) [2023-09-01 04:21:51,966 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) [2023-09-01 04:21:51,966 INFO L175 Difference]: Start difference. First operand has 50 places, 41 transitions, 134 flow. Second operand 3 states and 696 transitions. [2023-09-01 04:21:51,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 39 transitions, 204 flow [2023-09-01 04:21:51,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 39 transitions, 203 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 04:21:51,970 INFO L231 Difference]: Finished difference. Result has 49 places, 39 transitions, 131 flow [2023-09-01 04:21:51,970 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} [2023-09-01 04:21:51,970 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 1 predicate places. [2023-09-01 04:21:51,970 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 39 transitions, 131 flow [2023-09-01 04:21:51,971 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) [2023-09-01 04:21:51,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:21:51,971 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 04:21:51,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-09-01 04:21:52,179 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 [2023-09-01 04:21:52,180 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-09-01 04:21:52,181 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:21:52,181 INFO L85 PathProgramCache]: Analyzing trace with hash 979544735, now seen corresponding path program 1 times [2023-09-01 04:21:52,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 04:21:52,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [126730181] [2023-09-01 04:21:52,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:21:52,182 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 [2023-09-01 04:21:52,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 04:21:52,183 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) [2023-09-01 04:21:52,185 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 [2023-09-01 04:21:52,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:21:52,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 12 conjunts are in the unsatisfiable core [2023-09-01 04:21:52,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:21:52,332 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2023-09-01 04:21:52,332 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 [2023-09-01 04:21:52,529 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:21:52,530 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:21:52,703 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:21:52,703 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 04:21:52,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [126730181] [2023-09-01 04:21:52,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [126730181] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:21:52,703 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-09-01 04:21:52,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2023-09-01 04:21:52,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748104490] [2023-09-01 04:21:52,703 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-09-01 04:21:52,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 04:21:52,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 04:21:52,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 04:21:52,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-09-01 04:21:53,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 533 [2023-09-01 04:21:53,527 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) [2023-09-01 04:21:53,527 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:21:53,527 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 533 [2023-09-01 04:21:53,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:21:54,498 INFO L130 PetriNetUnfolder]: 832/1200 cut-off events. [2023-09-01 04:21:54,499 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2023-09-01 04:21:54,501 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. [2023-09-01 04:21:54,505 INFO L137 encePairwiseOnDemand]: 529/533 looper letters, 58 selfloop transitions, 3 changer transitions 0/63 dead transitions. [2023-09-01 04:21:54,506 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 63 transitions, 311 flow [2023-09-01 04:21:54,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 04:21:54,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 04:21:54,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1136 transitions. [2023-09-01 04:21:54,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42626641651031894 [2023-09-01 04:21:54,510 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1136 transitions. [2023-09-01 04:21:54,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1136 transitions. [2023-09-01 04:21:54,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:21:54,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1136 transitions. [2023-09-01 04:21:54,514 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) [2023-09-01 04:21:54,518 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) [2023-09-01 04:21:54,518 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) [2023-09-01 04:21:54,518 INFO L175 Difference]: Start difference. First operand has 49 places, 39 transitions, 131 flow. Second operand 5 states and 1136 transitions. [2023-09-01 04:21:54,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 63 transitions, 311 flow [2023-09-01 04:21:54,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 63 transitions, 310 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 04:21:54,520 INFO L231 Difference]: Finished difference. Result has 50 places, 37 transitions, 132 flow [2023-09-01 04:21:54,521 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} [2023-09-01 04:21:54,521 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 2 predicate places. [2023-09-01 04:21:54,521 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 37 transitions, 132 flow [2023-09-01 04:21:54,522 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) [2023-09-01 04:21:54,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:21:54,522 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-09-01 04:21:54,545 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 (9)] Ended with exit code 0 [2023-09-01 04:21:54,732 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 [2023-09-01 04:21:54,733 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-09-01 04:21:54,733 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:21:54,733 INFO L85 PathProgramCache]: Analyzing trace with hash 301214978, now seen corresponding path program 2 times [2023-09-01 04:21:54,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 04:21:54,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1284914558] [2023-09-01 04:21:54,734 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 04:21:54,734 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 [2023-09-01 04:21:54,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 04:21:54,735 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) [2023-09-01 04:21:54,738 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 [2023-09-01 04:21:54,846 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 04:21:54,847 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 04:21:54,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 14 conjunts are in the unsatisfiable core [2023-09-01 04:21:54,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:21:54,912 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2023-09-01 04:21:54,913 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 [2023-09-01 04:21:55,035 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:21:55,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:21:55,635 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:21:55,635 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 04:21:55,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1284914558] [2023-09-01 04:21:55,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1284914558] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:21:55,635 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-09-01 04:21:55,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2023-09-01 04:21:55,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887324465] [2023-09-01 04:21:55,635 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-09-01 04:21:55,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-09-01 04:21:55,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 04:21:55,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-09-01 04:21:55,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-09-01 04:21:59,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 533 [2023-09-01 04:21:59,482 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) [2023-09-01 04:21:59,482 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:21:59,482 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 533 [2023-09-01 04:21:59,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:22:04,540 INFO L130 PetriNetUnfolder]: 3673/5314 cut-off events. [2023-09-01 04:22:04,540 INFO L131 PetriNetUnfolder]: For 42/42 co-relation queries the response was YES. [2023-09-01 04:22:04,545 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. [2023-09-01 04:22:04,557 INFO L137 encePairwiseOnDemand]: 529/533 looper letters, 236 selfloop transitions, 12 changer transitions 0/250 dead transitions. [2023-09-01 04:22:04,557 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 250 transitions, 1140 flow [2023-09-01 04:22:04,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 04:22:04,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 04:22:04,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2894 transitions. [2023-09-01 04:22:04,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4524702939337086 [2023-09-01 04:22:04,563 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2894 transitions. [2023-09-01 04:22:04,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2894 transitions. [2023-09-01 04:22:04,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:22:04,565 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2894 transitions. [2023-09-01 04:22:04,569 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) [2023-09-01 04:22:04,574 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) [2023-09-01 04:22:04,575 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) [2023-09-01 04:22:04,575 INFO L175 Difference]: Start difference. First operand has 50 places, 37 transitions, 132 flow. Second operand 12 states and 2894 transitions. [2023-09-01 04:22:04,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 250 transitions, 1140 flow [2023-09-01 04:22:04,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 250 transitions, 1135 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-09-01 04:22:04,578 INFO L231 Difference]: Finished difference. Result has 65 places, 44 transitions, 225 flow [2023-09-01 04:22:04,578 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} [2023-09-01 04:22:04,578 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 17 predicate places. [2023-09-01 04:22:04,579 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 44 transitions, 225 flow [2023-09-01 04:22:04,579 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) [2023-09-01 04:22:04,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:22:04,580 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 04:22:04,587 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 [2023-09-01 04:22:04,786 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 [2023-09-01 04:22:04,787 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-09-01 04:22:04,787 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:22:04,787 INFO L85 PathProgramCache]: Analyzing trace with hash 301106743, now seen corresponding path program 1 times [2023-09-01 04:22:04,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 04:22:04,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [834919206] [2023-09-01 04:22:04,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:22:04,788 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 [2023-09-01 04:22:04,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 04:22:04,789 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) [2023-09-01 04:22:04,791 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 [2023-09-01 04:22:04,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:22:04,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 04:22:04,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:22:04,867 INFO L321 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2023-09-01 04:22:04,867 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 33 [2023-09-01 04:22:04,888 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 04:22:04,888 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 04:22:04,888 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 04:22:04,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [834919206] [2023-09-01 04:22:04,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [834919206] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:22:04,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:22:04,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 04:22:04,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107852387] [2023-09-01 04:22:04,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:22:04,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 04:22:04,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 04:22:04,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 04:22:04,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 04:22:05,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 533 [2023-09-01 04:22:05,055 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) [2023-09-01 04:22:05,055 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:22:05,055 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 533 [2023-09-01 04:22:05,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:22:05,798 INFO L130 PetriNetUnfolder]: 2162/3173 cut-off events. [2023-09-01 04:22:05,798 INFO L131 PetriNetUnfolder]: For 56/56 co-relation queries the response was YES. [2023-09-01 04:22:05,804 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. [2023-09-01 04:22:05,814 INFO L137 encePairwiseOnDemand]: 526/533 looper letters, 32 selfloop transitions, 5 changer transitions 0/39 dead transitions. [2023-09-01 04:22:05,815 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 39 transitions, 289 flow [2023-09-01 04:22:05,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 04:22:05,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 04:22:05,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 853 transitions. [2023-09-01 04:22:05,818 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.400093808630394 [2023-09-01 04:22:05,818 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 853 transitions. [2023-09-01 04:22:05,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 853 transitions. [2023-09-01 04:22:05,819 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:22:05,819 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 853 transitions. [2023-09-01 04:22:05,821 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) [2023-09-01 04:22:05,836 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) [2023-09-01 04:22:05,837 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) [2023-09-01 04:22:05,837 INFO L175 Difference]: Start difference. First operand has 65 places, 44 transitions, 225 flow. Second operand 4 states and 853 transitions. [2023-09-01 04:22:05,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 39 transitions, 289 flow [2023-09-01 04:22:05,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 39 transitions, 264 flow, removed 7 selfloop flow, removed 4 redundant places. [2023-09-01 04:22:05,842 INFO L231 Difference]: Finished difference. Result has 59 places, 39 transitions, 200 flow [2023-09-01 04:22:05,842 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} [2023-09-01 04:22:05,843 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 11 predicate places. [2023-09-01 04:22:05,845 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 39 transitions, 200 flow [2023-09-01 04:22:05,845 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) [2023-09-01 04:22:05,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:22:05,846 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 04:22:05,870 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 [2023-09-01 04:22:06,056 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 [2023-09-01 04:22:06,056 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-09-01 04:22:06,057 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:22:06,057 INFO L85 PathProgramCache]: Analyzing trace with hash 301106744, now seen corresponding path program 1 times [2023-09-01 04:22:06,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 04:22:06,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1680804102] [2023-09-01 04:22:06,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:22:06,058 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 [2023-09-01 04:22:06,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 04:22:06,059 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) [2023-09-01 04:22:06,062 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 [2023-09-01 04:22:06,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:22:06,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 9 conjunts are in the unsatisfiable core [2023-09-01 04:22:06,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:22:06,188 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:22:06,188 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:22:06,284 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 [2023-09-01 04:22:06,361 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:22:06,361 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 04:22:06,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1680804102] [2023-09-01 04:22:06,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1680804102] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:22:06,361 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-09-01 04:22:06,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2023-09-01 04:22:06,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025208486] [2023-09-01 04:22:06,361 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-09-01 04:22:06,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 04:22:06,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 04:22:06,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 04:22:06,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-09-01 04:22:08,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 533 [2023-09-01 04:22:08,203 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) [2023-09-01 04:22:08,203 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:22:08,203 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 533 [2023-09-01 04:22:08,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:22:09,740 INFO L130 PetriNetUnfolder]: 2639/4055 cut-off events. [2023-09-01 04:22:09,741 INFO L131 PetriNetUnfolder]: For 154/154 co-relation queries the response was YES. [2023-09-01 04:22:09,746 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. [2023-09-01 04:22:09,757 INFO L137 encePairwiseOnDemand]: 528/533 looper letters, 65 selfloop transitions, 10 changer transitions 0/77 dead transitions. [2023-09-01 04:22:09,757 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 77 transitions, 441 flow [2023-09-01 04:22:09,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 04:22:09,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 04:22:09,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1578 transitions. [2023-09-01 04:22:09,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4229429107477888 [2023-09-01 04:22:09,761 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1578 transitions. [2023-09-01 04:22:09,762 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1578 transitions. [2023-09-01 04:22:09,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:22:09,762 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1578 transitions. [2023-09-01 04:22:09,764 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) [2023-09-01 04:22:09,768 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) [2023-09-01 04:22:09,768 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) [2023-09-01 04:22:09,769 INFO L175 Difference]: Start difference. First operand has 59 places, 39 transitions, 200 flow. Second operand 7 states and 1578 transitions. [2023-09-01 04:22:09,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 77 transitions, 441 flow [2023-09-01 04:22:09,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 77 transitions, 434 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 04:22:09,771 INFO L231 Difference]: Finished difference. Result has 65 places, 42 transitions, 240 flow [2023-09-01 04:22:09,771 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} [2023-09-01 04:22:09,772 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 17 predicate places. [2023-09-01 04:22:09,772 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 42 transitions, 240 flow [2023-09-01 04:22:09,773 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) [2023-09-01 04:22:09,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:22:09,773 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:22:09,783 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 [2023-09-01 04:22:09,980 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 [2023-09-01 04:22:09,981 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-09-01 04:22:09,981 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:22:09,981 INFO L85 PathProgramCache]: Analyzing trace with hash 744375485, now seen corresponding path program 1 times [2023-09-01 04:22:09,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 04:22:09,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [721534066] [2023-09-01 04:22:09,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:22:09,982 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 [2023-09-01 04:22:09,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 04:22:09,990 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) [2023-09-01 04:22:09,991 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 [2023-09-01 04:22:10,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:22:10,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 21 conjunts are in the unsatisfiable core [2023-09-01 04:22:10,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:22:10,112 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2023-09-01 04:22:10,112 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 [2023-09-01 04:22:10,206 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 04:22:10,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:22:11,031 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 04:22:11,032 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 04:22:11,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [721534066] [2023-09-01 04:22:11,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [721534066] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:22:11,032 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-09-01 04:22:11,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2023-09-01 04:22:11,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964300686] [2023-09-01 04:22:11,032 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-09-01 04:22:11,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 04:22:11,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 04:22:11,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 04:22:11,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-09-01 04:22:22,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 533 [2023-09-01 04:22:22,061 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) [2023-09-01 04:22:22,062 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:22:22,062 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 533 [2023-09-01 04:22:22,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:22:26,531 INFO L130 PetriNetUnfolder]: 1807/2905 cut-off events. [2023-09-01 04:22:26,532 INFO L131 PetriNetUnfolder]: For 812/812 co-relation queries the response was YES. [2023-09-01 04:22:26,536 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. [2023-09-01 04:22:26,550 INFO L137 encePairwiseOnDemand]: 521/533 looper letters, 54 selfloop transitions, 11 changer transitions 0/67 dead transitions. [2023-09-01 04:22:26,550 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 67 transitions, 435 flow [2023-09-01 04:22:26,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 04:22:26,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 04:22:26,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2006 transitions. [2023-09-01 04:22:26,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4181780279341255 [2023-09-01 04:22:26,556 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2006 transitions. [2023-09-01 04:22:26,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2006 transitions. [2023-09-01 04:22:26,557 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:22:26,557 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2006 transitions. [2023-09-01 04:22:26,560 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) [2023-09-01 04:22:26,563 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) [2023-09-01 04:22:26,564 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) [2023-09-01 04:22:26,564 INFO L175 Difference]: Start difference. First operand has 65 places, 42 transitions, 240 flow. Second operand 9 states and 2006 transitions. [2023-09-01 04:22:26,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 67 transitions, 435 flow [2023-09-01 04:22:26,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 67 transitions, 419 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-09-01 04:22:26,567 INFO L231 Difference]: Finished difference. Result has 72 places, 42 transitions, 281 flow [2023-09-01 04:22:26,567 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} [2023-09-01 04:22:26,567 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 24 predicate places. [2023-09-01 04:22:26,568 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 42 transitions, 281 flow [2023-09-01 04:22:26,568 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) [2023-09-01 04:22:26,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:22:26,568 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2023-09-01 04:22:26,576 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 [2023-09-01 04:22:26,775 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 [2023-09-01 04:22:26,775 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-09-01 04:22:26,776 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:22:26,776 INFO L85 PathProgramCache]: Analyzing trace with hash 2014715529, now seen corresponding path program 2 times [2023-09-01 04:22:26,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 04:22:26,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [984907598] [2023-09-01 04:22:26,776 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 04:22:26,776 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 04:22:26,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 04:22:26,777 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) [2023-09-01 04:22:26,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-09-01 04:22:26,847 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 04:22:26,847 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 04:22:26,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 17 conjunts are in the unsatisfiable core [2023-09-01 04:22:26,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:22:26,892 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2023-09-01 04:22:26,893 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 [2023-09-01 04:22:26,977 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-09-01 04:22:26,977 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 04:22:26,977 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 04:22:26,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [984907598] [2023-09-01 04:22:26,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [984907598] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:22:26,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:22:26,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 04:22:26,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485838107] [2023-09-01 04:22:26,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:22:26,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 04:22:26,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 04:22:26,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 04:22:26,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 04:22:27,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 533 [2023-09-01 04:22:27,304 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) [2023-09-01 04:22:27,304 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:22:27,304 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 533 [2023-09-01 04:22:27,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:22:27,760 INFO L130 PetriNetUnfolder]: 533/995 cut-off events. [2023-09-01 04:22:27,761 INFO L131 PetriNetUnfolder]: For 961/961 co-relation queries the response was YES. [2023-09-01 04:22:27,762 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. [2023-09-01 04:22:27,764 INFO L137 encePairwiseOnDemand]: 523/533 looper letters, 26 selfloop transitions, 6 changer transitions 0/34 dead transitions. [2023-09-01 04:22:27,764 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 34 transitions, 293 flow [2023-09-01 04:22:27,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 04:22:27,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 04:22:27,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 908 transitions. [2023-09-01 04:22:27,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425891181988743 [2023-09-01 04:22:27,767 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 908 transitions. [2023-09-01 04:22:27,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 908 transitions. [2023-09-01 04:22:27,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:22:27,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 908 transitions. [2023-09-01 04:22:27,768 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) [2023-09-01 04:22:27,770 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) [2023-09-01 04:22:27,771 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) [2023-09-01 04:22:27,771 INFO L175 Difference]: Start difference. First operand has 72 places, 42 transitions, 281 flow. Second operand 4 states and 908 transitions. [2023-09-01 04:22:27,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 34 transitions, 293 flow [2023-09-01 04:22:27,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 34 transitions, 246 flow, removed 6 selfloop flow, removed 12 redundant places. [2023-09-01 04:22:27,772 INFO L231 Difference]: Finished difference. Result has 55 places, 34 transitions, 194 flow [2023-09-01 04:22:27,773 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} [2023-09-01 04:22:27,774 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 7 predicate places. [2023-09-01 04:22:27,774 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 34 transitions, 194 flow [2023-09-01 04:22:27,774 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) [2023-09-01 04:22:27,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:22:27,774 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1] [2023-09-01 04:22:27,781 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 [2023-09-01 04:22:27,981 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 [2023-09-01 04:22:27,981 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-09-01 04:22:27,982 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:22:27,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1956872062, now seen corresponding path program 3 times [2023-09-01 04:22:27,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 04:22:27,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1201784089] [2023-09-01 04:22:27,982 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 04:22:27,983 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 [2023-09-01 04:22:27,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 04:22:27,983 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) [2023-09-01 04:22:27,986 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 [2023-09-01 04:22:28,152 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-09-01 04:22:28,152 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 04:22:28,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2023-09-01 04:22:28,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:22:28,203 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2023-09-01 04:22:28,203 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 [2023-09-01 04:22:28,453 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:22:28,453 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:22:30,324 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:22:30,324 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 04:22:30,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1201784089] [2023-09-01 04:22:30,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1201784089] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:22:30,324 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-09-01 04:22:30,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2023-09-01 04:22:30,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377333375] [2023-09-01 04:22:30,325 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-09-01 04:22:30,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-09-01 04:22:30,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 04:22:30,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-09-01 04:22:30,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2023-09-01 04:22:45,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 533 [2023-09-01 04:22:45,342 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) [2023-09-01 04:22:45,342 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:22:45,342 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 533 [2023-09-01 04:22:45,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:23:01,640 INFO L130 PetriNetUnfolder]: 1201/2275 cut-off events. [2023-09-01 04:23:01,641 INFO L131 PetriNetUnfolder]: For 753/753 co-relation queries the response was YES. [2023-09-01 04:23:01,644 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. [2023-09-01 04:23:01,649 INFO L137 encePairwiseOnDemand]: 529/533 looper letters, 296 selfloop transitions, 24 changer transitions 0/322 dead transitions. [2023-09-01 04:23:01,649 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 322 transitions, 1810 flow [2023-09-01 04:23:01,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-09-01 04:23:01,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-09-01 04:23:01,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 5591 transitions. [2023-09-01 04:23:01,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43707004377736086 [2023-09-01 04:23:01,670 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 5591 transitions. [2023-09-01 04:23:01,671 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 5591 transitions. [2023-09-01 04:23:01,672 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:23:01,673 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 5591 transitions. [2023-09-01 04:23:01,680 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) [2023-09-01 04:23:01,689 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) [2023-09-01 04:23:01,690 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) [2023-09-01 04:23:01,691 INFO L175 Difference]: Start difference. First operand has 55 places, 34 transitions, 194 flow. Second operand 24 states and 5591 transitions. [2023-09-01 04:23:01,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 322 transitions, 1810 flow [2023-09-01 04:23:01,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 322 transitions, 1786 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 04:23:01,696 INFO L231 Difference]: Finished difference. Result has 89 places, 47 transitions, 376 flow [2023-09-01 04:23:01,696 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} [2023-09-01 04:23:01,696 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 41 predicate places. [2023-09-01 04:23:01,697 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 47 transitions, 376 flow [2023-09-01 04:23:01,698 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) [2023-09-01 04:23:01,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:23:01,698 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:23:01,708 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-09-01 04:23:01,907 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 [2023-09-01 04:23:01,907 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-09-01 04:23:01,907 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:23:01,907 INFO L85 PathProgramCache]: Analyzing trace with hash 332401590, now seen corresponding path program 1 times [2023-09-01 04:23:01,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 04:23:01,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1767788746] [2023-09-01 04:23:01,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:23:01,908 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 [2023-09-01 04:23:01,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 04:23:01,909 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) [2023-09-01 04:23:01,911 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 [2023-09-01 04:23:02,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:23:02,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 04:23:02,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:23:02,301 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 04:23:02,301 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 04:23:02,301 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 04:23:02,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1767788746] [2023-09-01 04:23:02,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1767788746] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:23:02,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:23:02,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 04:23:02,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221092182] [2023-09-01 04:23:02,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:23:02,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 04:23:02,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 04:23:02,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 04:23:02,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 04:23:02,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 533 [2023-09-01 04:23:02,411 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) [2023-09-01 04:23:02,411 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:23:02,411 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 533 [2023-09-01 04:23:02,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:23:03,114 INFO L130 PetriNetUnfolder]: 1493/2798 cut-off events. [2023-09-01 04:23:03,115 INFO L131 PetriNetUnfolder]: For 462/462 co-relation queries the response was YES. [2023-09-01 04:23:03,120 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. [2023-09-01 04:23:03,125 INFO L137 encePairwiseOnDemand]: 527/533 looper letters, 62 selfloop transitions, 6 changer transitions 0/68 dead transitions. [2023-09-01 04:23:03,125 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 68 transitions, 559 flow [2023-09-01 04:23:03,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 04:23:03,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 04:23:03,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1101 transitions. [2023-09-01 04:23:03,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4131332082551595 [2023-09-01 04:23:03,129 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1101 transitions. [2023-09-01 04:23:03,129 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1101 transitions. [2023-09-01 04:23:03,129 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:23:03,129 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1101 transitions. [2023-09-01 04:23:03,131 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) [2023-09-01 04:23:03,133 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) [2023-09-01 04:23:03,134 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) [2023-09-01 04:23:03,134 INFO L175 Difference]: Start difference. First operand has 89 places, 47 transitions, 376 flow. Second operand 5 states and 1101 transitions. [2023-09-01 04:23:03,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 68 transitions, 559 flow [2023-09-01 04:23:03,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 68 transitions, 511 flow, removed 13 selfloop flow, removed 10 redundant places. [2023-09-01 04:23:03,138 INFO L231 Difference]: Finished difference. Result has 86 places, 50 transitions, 363 flow [2023-09-01 04:23:03,138 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} [2023-09-01 04:23:03,139 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 38 predicate places. [2023-09-01 04:23:03,139 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 50 transitions, 363 flow [2023-09-01 04:23:03,139 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) [2023-09-01 04:23:03,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:23:03,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:23:03,163 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 [2023-09-01 04:23:03,347 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 [2023-09-01 04:23:03,348 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-09-01 04:23:03,348 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:23:03,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1035715232, now seen corresponding path program 2 times [2023-09-01 04:23:03,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 04:23:03,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1195296496] [2023-09-01 04:23:03,349 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 04:23:03,349 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 [2023-09-01 04:23:03,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 04:23:03,366 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) [2023-09-01 04:23:03,397 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 [2023-09-01 04:23:03,512 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 04:23:03,512 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 04:23:03,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 04:23:03,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:23:03,771 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 04:23:03,772 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 [2023-09-01 04:23:03,789 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 [2023-09-01 04:23:03,919 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 04:23:03,919 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 04:23:03,919 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 04:23:03,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1195296496] [2023-09-01 04:23:03,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1195296496] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:23:03,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:23:03,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 04:23:03,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097753861] [2023-09-01 04:23:03,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:23:03,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 04:23:03,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 04:23:03,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 04:23:03,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 04:23:03,994 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 533 [2023-09-01 04:23:03,995 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) [2023-09-01 04:23:03,995 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:23:03,995 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 533 [2023-09-01 04:23:03,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:23:05,021 INFO L130 PetriNetUnfolder]: 2203/4127 cut-off events. [2023-09-01 04:23:05,021 INFO L131 PetriNetUnfolder]: For 3115/3115 co-relation queries the response was YES. [2023-09-01 04:23:05,048 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. [2023-09-01 04:23:05,056 INFO L137 encePairwiseOnDemand]: 527/533 looper letters, 67 selfloop transitions, 8 changer transitions 0/75 dead transitions. [2023-09-01 04:23:05,057 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 75 transitions, 622 flow [2023-09-01 04:23:05,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 04:23:05,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 04:23:05,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1107 transitions. [2023-09-01 04:23:05,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4153846153846154 [2023-09-01 04:23:05,061 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1107 transitions. [2023-09-01 04:23:05,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1107 transitions. [2023-09-01 04:23:05,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:23:05,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1107 transitions. [2023-09-01 04:23:05,064 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) [2023-09-01 04:23:05,067 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) [2023-09-01 04:23:05,067 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) [2023-09-01 04:23:05,067 INFO L175 Difference]: Start difference. First operand has 86 places, 50 transitions, 363 flow. Second operand 5 states and 1107 transitions. [2023-09-01 04:23:05,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 75 transitions, 622 flow [2023-09-01 04:23:05,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 75 transitions, 593 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-09-01 04:23:05,090 INFO L231 Difference]: Finished difference. Result has 92 places, 55 transitions, 414 flow [2023-09-01 04:23:05,090 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} [2023-09-01 04:23:05,090 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 44 predicate places. [2023-09-01 04:23:05,090 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 55 transitions, 414 flow [2023-09-01 04:23:05,091 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) [2023-09-01 04:23:05,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:23:05,091 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:23:05,102 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 [2023-09-01 04:23:05,302 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 [2023-09-01 04:23:05,302 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-09-01 04:23:05,303 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:23:05,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1767787162, now seen corresponding path program 3 times [2023-09-01 04:23:05,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 04:23:05,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [484384530] [2023-09-01 04:23:05,303 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 04:23:05,303 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 [2023-09-01 04:23:05,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 04:23:05,304 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) [2023-09-01 04:23:05,317 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 [2023-09-01 04:23:05,401 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-09-01 04:23:05,401 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 04:23:05,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 04:23:05,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:23:05,884 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 04:23:05,884 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 04:23:05,884 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 04:23:05,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [484384530] [2023-09-01 04:23:05,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [484384530] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:23:05,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:23:05,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 04:23:05,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474291462] [2023-09-01 04:23:05,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:23:05,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 04:23:05,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 04:23:05,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 04:23:05,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 04:23:05,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 533 [2023-09-01 04:23:05,965 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) [2023-09-01 04:23:05,966 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:23:05,966 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 533 [2023-09-01 04:23:05,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:23:07,116 INFO L130 PetriNetUnfolder]: 2403/4447 cut-off events. [2023-09-01 04:23:07,116 INFO L131 PetriNetUnfolder]: For 7211/7211 co-relation queries the response was YES. [2023-09-01 04:23:07,131 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. [2023-09-01 04:23:07,143 INFO L137 encePairwiseOnDemand]: 527/533 looper letters, 64 selfloop transitions, 15 changer transitions 0/79 dead transitions. [2023-09-01 04:23:07,143 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 79 transitions, 679 flow [2023-09-01 04:23:07,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 04:23:07,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 04:23:07,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1097 transitions. [2023-09-01 04:23:07,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4116322701688555 [2023-09-01 04:23:07,183 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1097 transitions. [2023-09-01 04:23:07,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1097 transitions. [2023-09-01 04:23:07,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:23:07,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1097 transitions. [2023-09-01 04:23:07,185 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) [2023-09-01 04:23:07,186 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) [2023-09-01 04:23:07,193 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) [2023-09-01 04:23:07,193 INFO L175 Difference]: Start difference. First operand has 92 places, 55 transitions, 414 flow. Second operand 5 states and 1097 transitions. [2023-09-01 04:23:07,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 79 transitions, 679 flow [2023-09-01 04:23:07,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 79 transitions, 655 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-09-01 04:23:07,223 INFO L231 Difference]: Finished difference. Result has 98 places, 62 transitions, 510 flow [2023-09-01 04:23:07,223 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} [2023-09-01 04:23:07,223 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 50 predicate places. [2023-09-01 04:23:07,224 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 62 transitions, 510 flow [2023-09-01 04:23:07,224 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) [2023-09-01 04:23:07,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:23:07,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:23:07,233 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 [2023-09-01 04:23:07,426 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 [2023-09-01 04:23:07,426 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-09-01 04:23:07,426 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:23:07,427 INFO L85 PathProgramCache]: Analyzing trace with hash 899407164, now seen corresponding path program 4 times [2023-09-01 04:23:07,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 04:23:07,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1019502351] [2023-09-01 04:23:07,427 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-09-01 04:23:07,427 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 [2023-09-01 04:23:07,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 04:23:07,428 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) [2023-09-01 04:23:07,431 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 [2023-09-01 04:23:07,548 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-09-01 04:23:07,548 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 04:23:07,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 04:23:07,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:23:07,892 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 04:23:07,892 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 04:23:07,892 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 04:23:07,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1019502351] [2023-09-01 04:23:07,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1019502351] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:23:07,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:23:07,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 04:23:07,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177689636] [2023-09-01 04:23:07,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:23:07,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 04:23:07,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 04:23:07,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 04:23:07,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-09-01 04:23:07,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 533 [2023-09-01 04:23:07,974 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) [2023-09-01 04:23:07,974 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:23:07,974 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 533 [2023-09-01 04:23:07,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:23:08,996 INFO L130 PetriNetUnfolder]: 2323/4367 cut-off events. [2023-09-01 04:23:08,997 INFO L131 PetriNetUnfolder]: For 11516/11516 co-relation queries the response was YES. [2023-09-01 04:23:09,015 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. [2023-09-01 04:23:09,028 INFO L137 encePairwiseOnDemand]: 527/533 looper letters, 62 selfloop transitions, 16 changer transitions 0/78 dead transitions. [2023-09-01 04:23:09,029 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 78 transitions, 755 flow [2023-09-01 04:23:09,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 04:23:09,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 04:23:09,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1091 transitions. [2023-09-01 04:23:09,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40938086303939963 [2023-09-01 04:23:09,032 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1091 transitions. [2023-09-01 04:23:09,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1091 transitions. [2023-09-01 04:23:09,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:23:09,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1091 transitions. [2023-09-01 04:23:09,034 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) [2023-09-01 04:23:09,035 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) [2023-09-01 04:23:09,036 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) [2023-09-01 04:23:09,036 INFO L175 Difference]: Start difference. First operand has 98 places, 62 transitions, 510 flow. Second operand 5 states and 1091 transitions. [2023-09-01 04:23:09,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 78 transitions, 755 flow [2023-09-01 04:23:09,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 78 transitions, 736 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-09-01 04:23:09,117 INFO L231 Difference]: Finished difference. Result has 103 places, 69 transitions, 614 flow [2023-09-01 04:23:09,118 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} [2023-09-01 04:23:09,118 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 55 predicate places. [2023-09-01 04:23:09,118 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 69 transitions, 614 flow [2023-09-01 04:23:09,118 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) [2023-09-01 04:23:09,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:23:09,119 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:23:09,130 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 [2023-09-01 04:23:09,319 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 [2023-09-01 04:23:09,319 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-09-01 04:23:09,319 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:23:09,320 INFO L85 PathProgramCache]: Analyzing trace with hash 999680256, now seen corresponding path program 5 times [2023-09-01 04:23:09,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 04:23:09,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [118461183] [2023-09-01 04:23:09,320 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-09-01 04:23:09,320 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 [2023-09-01 04:23:09,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 04:23:09,321 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) [2023-09-01 04:23:09,326 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 [2023-09-01 04:23:09,435 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 04:23:09,435 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 04:23:09,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 04:23:09,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:23:09,733 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 04:23:09,734 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 [2023-09-01 04:23:09,743 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 116 treesize of output 114 [2023-09-01 04:23:09,749 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 [2023-09-01 04:23:09,792 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 04:23:09,793 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 [2023-09-01 04:23:09,808 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 [2023-09-01 04:23:09,921 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 04:23:09,922 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 04:23:09,922 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 04:23:09,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [118461183] [2023-09-01 04:23:09,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [118461183] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:23:09,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:23:09,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 04:23:09,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491019908] [2023-09-01 04:23:09,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:23:09,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 04:23:09,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 04:23:09,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 04:23:09,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-09-01 04:23:10,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 533 [2023-09-01 04:23:10,021 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) [2023-09-01 04:23:10,021 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:23:10,021 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 533 [2023-09-01 04:23:10,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:23:10,992 INFO L130 PetriNetUnfolder]: 2343/4427 cut-off events. [2023-09-01 04:23:10,992 INFO L131 PetriNetUnfolder]: For 15411/15411 co-relation queries the response was YES. [2023-09-01 04:23:11,013 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. [2023-09-01 04:23:11,027 INFO L137 encePairwiseOnDemand]: 527/533 looper letters, 65 selfloop transitions, 19 changer transitions 0/84 dead transitions. [2023-09-01 04:23:11,027 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 84 transitions, 836 flow [2023-09-01 04:23:11,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 04:23:11,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 04:23:11,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1110 transitions. [2023-09-01 04:23:11,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4165103189493433 [2023-09-01 04:23:11,030 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1110 transitions. [2023-09-01 04:23:11,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1110 transitions. [2023-09-01 04:23:11,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:23:11,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1110 transitions. [2023-09-01 04:23:11,032 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) [2023-09-01 04:23:11,033 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) [2023-09-01 04:23:11,033 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) [2023-09-01 04:23:11,034 INFO L175 Difference]: Start difference. First operand has 103 places, 69 transitions, 614 flow. Second operand 5 states and 1110 transitions. [2023-09-01 04:23:11,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 84 transitions, 836 flow [2023-09-01 04:23:11,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 84 transitions, 780 flow, removed 16 selfloop flow, removed 2 redundant places. [2023-09-01 04:23:11,103 INFO L231 Difference]: Finished difference. Result has 106 places, 71 transitions, 621 flow [2023-09-01 04:23:11,103 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} [2023-09-01 04:23:11,104 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 58 predicate places. [2023-09-01 04:23:11,104 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 71 transitions, 621 flow [2023-09-01 04:23:11,104 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) [2023-09-01 04:23:11,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:23:11,104 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:23:11,113 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 [2023-09-01 04:23:11,309 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 [2023-09-01 04:23:11,309 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-09-01 04:23:11,309 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:23:11,309 INFO L85 PathProgramCache]: Analyzing trace with hash -250457530, now seen corresponding path program 6 times [2023-09-01 04:23:11,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 04:23:11,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [523613095] [2023-09-01 04:23:11,310 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-09-01 04:23:11,310 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 [2023-09-01 04:23:11,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 04:23:11,311 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) [2023-09-01 04:23:11,315 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 [2023-09-01 04:23:11,445 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-09-01 04:23:11,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 04:23:11,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 04:23:11,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:23:11,743 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 04:23:11,743 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 [2023-09-01 04:23:11,759 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 [2023-09-01 04:23:11,853 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 04:23:11,854 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 04:23:11,854 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 04:23:11,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [523613095] [2023-09-01 04:23:11,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [523613095] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:23:11,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:23:11,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 04:23:11,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021601491] [2023-09-01 04:23:11,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:23:11,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 04:23:11,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 04:23:11,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 04:23:11,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 04:23:11,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 533 [2023-09-01 04:23:11,956 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) [2023-09-01 04:23:11,956 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:23:11,956 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 533 [2023-09-01 04:23:11,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:23:13,262 INFO L130 PetriNetUnfolder]: 2323/4287 cut-off events. [2023-09-01 04:23:13,262 INFO L131 PetriNetUnfolder]: For 14197/14197 co-relation queries the response was YES. [2023-09-01 04:23:13,281 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. [2023-09-01 04:23:13,293 INFO L137 encePairwiseOnDemand]: 527/533 looper letters, 65 selfloop transitions, 17 changer transitions 0/82 dead transitions. [2023-09-01 04:23:13,294 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 82 transitions, 833 flow [2023-09-01 04:23:13,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 04:23:13,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 04:23:13,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1106 transitions. [2023-09-01 04:23:13,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4150093808630394 [2023-09-01 04:23:13,297 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1106 transitions. [2023-09-01 04:23:13,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1106 transitions. [2023-09-01 04:23:13,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:23:13,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1106 transitions. [2023-09-01 04:23:13,299 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) [2023-09-01 04:23:13,302 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) [2023-09-01 04:23:13,302 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) [2023-09-01 04:23:13,302 INFO L175 Difference]: Start difference. First operand has 106 places, 71 transitions, 621 flow. Second operand 5 states and 1106 transitions. [2023-09-01 04:23:13,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 82 transitions, 833 flow [2023-09-01 04:23:13,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 82 transitions, 783 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-09-01 04:23:13,369 INFO L231 Difference]: Finished difference. Result has 108 places, 73 transitions, 638 flow [2023-09-01 04:23:13,369 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} [2023-09-01 04:23:13,370 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 60 predicate places. [2023-09-01 04:23:13,370 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 73 transitions, 638 flow [2023-09-01 04:23:13,370 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) [2023-09-01 04:23:13,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:23:13,371 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:23:13,389 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 [2023-09-01 04:23:13,580 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 [2023-09-01 04:23:13,580 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-09-01 04:23:13,581 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:23:13,581 INFO L85 PathProgramCache]: Analyzing trace with hash -2146431135, now seen corresponding path program 1 times [2023-09-01 04:23:13,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 04:23:13,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1708140336] [2023-09-01 04:23:13,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:23:13,582 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 [2023-09-01 04:23:13,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 04:23:13,583 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) [2023-09-01 04:23:13,586 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 [2023-09-01 04:23:13,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:23:13,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 04:23:13,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:23:14,013 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 04:23:14,013 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 [2023-09-01 04:23:14,020 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 [2023-09-01 04:23:14,026 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 [2023-09-01 04:23:14,069 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 04:23:14,070 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 [2023-09-01 04:23:14,085 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 [2023-09-01 04:23:14,171 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 04:23:14,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:23:14,476 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 04:23:14,477 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 [2023-09-01 04:23:14,491 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 [2023-09-01 04:23:14,499 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 [2023-09-01 04:23:15,576 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 04:23:15,577 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 04:23:15,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1708140336] [2023-09-01 04:23:15,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1708140336] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:23:15,577 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-09-01 04:23:15,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-09-01 04:23:15,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200588598] [2023-09-01 04:23:15,577 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-09-01 04:23:15,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 04:23:15,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 04:23:15,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 04:23:15,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-09-01 04:23:16,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 533 [2023-09-01 04:23:16,148 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) [2023-09-01 04:23:16,148 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:23:16,148 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 533 [2023-09-01 04:23:16,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:23:19,188 INFO L130 PetriNetUnfolder]: 5503/10427 cut-off events. [2023-09-01 04:23:19,188 INFO L131 PetriNetUnfolder]: For 25671/25671 co-relation queries the response was YES. [2023-09-01 04:23:19,239 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. [2023-09-01 04:23:19,266 INFO L137 encePairwiseOnDemand]: 527/533 looper letters, 117 selfloop transitions, 42 changer transitions 0/159 dead transitions. [2023-09-01 04:23:19,267 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 159 transitions, 1303 flow [2023-09-01 04:23:19,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-09-01 04:23:19,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-09-01 04:23:19,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3048 transitions. [2023-09-01 04:23:19,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4084695792012865 [2023-09-01 04:23:19,271 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3048 transitions. [2023-09-01 04:23:19,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3048 transitions. [2023-09-01 04:23:19,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:23:19,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3048 transitions. [2023-09-01 04:23:19,276 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) [2023-09-01 04:23:19,281 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) [2023-09-01 04:23:19,282 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) [2023-09-01 04:23:19,282 INFO L175 Difference]: Start difference. First operand has 108 places, 73 transitions, 638 flow. Second operand 14 states and 3048 transitions. [2023-09-01 04:23:19,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 159 transitions, 1303 flow [2023-09-01 04:23:19,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 159 transitions, 1240 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-09-01 04:23:19,393 INFO L231 Difference]: Finished difference. Result has 125 places, 94 transitions, 869 flow [2023-09-01 04:23:19,393 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} [2023-09-01 04:23:19,393 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 77 predicate places. [2023-09-01 04:23:19,393 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 94 transitions, 869 flow [2023-09-01 04:23:19,394 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) [2023-09-01 04:23:19,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:23:19,394 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:23:19,402 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 [2023-09-01 04:23:19,603 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 [2023-09-01 04:23:19,603 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-09-01 04:23:19,604 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:23:19,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1882627481, now seen corresponding path program 2 times [2023-09-01 04:23:19,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 04:23:19,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [545993003] [2023-09-01 04:23:19,604 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 04:23:19,604 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 [2023-09-01 04:23:19,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 04:23:19,609 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) [2023-09-01 04:23:19,621 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 [2023-09-01 04:23:19,770 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 04:23:19,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 04:23:19,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 04:23:19,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:23:20,205 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 04:23:20,205 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:23:20,425 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 04:23:20,426 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 [2023-09-01 04:23:20,435 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 [2023-09-01 04:23:20,442 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 [2023-09-01 04:23:20,673 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 04:23:20,674 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 [2023-09-01 04:23:20,692 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 [2023-09-01 04:23:21,470 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 04:23:21,470 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 04:23:21,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [545993003] [2023-09-01 04:23:21,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [545993003] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:23:21,470 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-09-01 04:23:21,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-09-01 04:23:21,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142442314] [2023-09-01 04:23:21,470 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-09-01 04:23:21,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 04:23:21,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 04:23:21,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 04:23:21,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-09-01 04:23:21,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 533 [2023-09-01 04:23:21,664 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) [2023-09-01 04:23:21,664 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:23:21,664 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 533 [2023-09-01 04:23:21,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:23:25,455 INFO L130 PetriNetUnfolder]: 5743/10987 cut-off events. [2023-09-01 04:23:25,455 INFO L131 PetriNetUnfolder]: For 56469/56469 co-relation queries the response was YES. [2023-09-01 04:23:25,498 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. [2023-09-01 04:23:25,524 INFO L137 encePairwiseOnDemand]: 527/533 looper letters, 138 selfloop transitions, 56 changer transitions 0/194 dead transitions. [2023-09-01 04:23:25,524 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 194 transitions, 1894 flow [2023-09-01 04:23:25,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-09-01 04:23:25,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-09-01 04:23:25,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3510 transitions. [2023-09-01 04:23:25,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4115853658536585 [2023-09-01 04:23:25,528 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3510 transitions. [2023-09-01 04:23:25,529 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3510 transitions. [2023-09-01 04:23:25,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:23:25,529 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3510 transitions. [2023-09-01 04:23:25,532 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) [2023-09-01 04:23:25,535 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) [2023-09-01 04:23:25,536 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) [2023-09-01 04:23:25,536 INFO L175 Difference]: Start difference. First operand has 125 places, 94 transitions, 869 flow. Second operand 16 states and 3510 transitions. [2023-09-01 04:23:25,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 194 transitions, 1894 flow [2023-09-01 04:23:25,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 194 transitions, 1726 flow, removed 58 selfloop flow, removed 4 redundant places. [2023-09-01 04:23:25,965 INFO L231 Difference]: Finished difference. Result has 145 places, 120 transitions, 1200 flow [2023-09-01 04:23:25,965 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} [2023-09-01 04:23:25,967 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 97 predicate places. [2023-09-01 04:23:25,967 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 120 transitions, 1200 flow [2023-09-01 04:23:25,968 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) [2023-09-01 04:23:25,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:23:25,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:23:25,979 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 [2023-09-01 04:23:26,176 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 [2023-09-01 04:23:26,177 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-09-01 04:23:26,177 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:23:26,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1088265703, now seen corresponding path program 3 times [2023-09-01 04:23:26,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 04:23:26,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [307445711] [2023-09-01 04:23:26,178 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 04:23:26,178 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 04:23:26,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 04:23:26,179 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) [2023-09-01 04:23:26,180 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 [2023-09-01 04:23:26,337 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-09-01 04:23:26,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 04:23:26,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 04:23:26,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:23:26,678 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 04:23:26,678 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:23:26,895 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 04:23:26,896 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 [2023-09-01 04:23:26,903 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 [2023-09-01 04:23:26,908 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 [2023-09-01 04:23:27,093 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 04:23:27,093 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 [2023-09-01 04:23:27,108 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 [2023-09-01 04:23:27,748 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 04:23:27,748 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 04:23:27,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [307445711] [2023-09-01 04:23:27,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [307445711] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:23:27,748 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-09-01 04:23:27,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-09-01 04:23:27,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111242482] [2023-09-01 04:23:27,748 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-09-01 04:23:27,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 04:23:27,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 04:23:27,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 04:23:27,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-09-01 04:23:28,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 533 [2023-09-01 04:23:28,087 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) [2023-09-01 04:23:28,087 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:23:28,087 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 533 [2023-09-01 04:23:28,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:23:30,992 INFO L130 PetriNetUnfolder]: 5443/10087 cut-off events. [2023-09-01 04:23:30,992 INFO L131 PetriNetUnfolder]: For 66386/66386 co-relation queries the response was YES. [2023-09-01 04:23:31,036 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. [2023-09-01 04:23:31,062 INFO L137 encePairwiseOnDemand]: 527/533 looper letters, 114 selfloop transitions, 67 changer transitions 0/181 dead transitions. [2023-09-01 04:23:31,062 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 181 transitions, 1875 flow [2023-09-01 04:23:31,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-09-01 04:23:31,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-09-01 04:23:31,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2844 transitions. [2023-09-01 04:23:31,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4104488382161928 [2023-09-01 04:23:31,066 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2844 transitions. [2023-09-01 04:23:31,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2844 transitions. [2023-09-01 04:23:31,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:23:31,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2844 transitions. [2023-09-01 04:23:31,068 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) [2023-09-01 04:23:31,071 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) [2023-09-01 04:23:31,072 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) [2023-09-01 04:23:31,072 INFO L175 Difference]: Start difference. First operand has 145 places, 120 transitions, 1200 flow. Second operand 13 states and 2844 transitions. [2023-09-01 04:23:31,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 181 transitions, 1875 flow [2023-09-01 04:23:31,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 181 transitions, 1739 flow, removed 53 selfloop flow, removed 3 redundant places. [2023-09-01 04:23:31,764 INFO L231 Difference]: Finished difference. Result has 156 places, 127 transitions, 1331 flow [2023-09-01 04:23:31,764 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} [2023-09-01 04:23:31,764 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 108 predicate places. [2023-09-01 04:23:31,764 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 127 transitions, 1331 flow [2023-09-01 04:23:31,765 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) [2023-09-01 04:23:31,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:23:31,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:23:31,775 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 [2023-09-01 04:23:31,970 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 [2023-09-01 04:23:31,970 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-09-01 04:23:31,971 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:23:31,971 INFO L85 PathProgramCache]: Analyzing trace with hash 380084327, now seen corresponding path program 4 times [2023-09-01 04:23:31,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 04:23:31,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1023928306] [2023-09-01 04:23:31,971 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-09-01 04:23:31,971 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 [2023-09-01 04:23:31,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 04:23:31,972 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) [2023-09-01 04:23:31,974 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 [2023-09-01 04:23:32,146 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-09-01 04:23:32,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 04:23:32,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 04:23:32,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:23:32,705 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 04:23:32,706 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 [2023-09-01 04:23:32,714 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 [2023-09-01 04:23:32,723 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 [2023-09-01 04:23:32,765 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 04:23:32,766 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 [2023-09-01 04:23:32,781 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 120 treesize of output 116 [2023-09-01 04:23:32,879 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 04:23:32,879 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:23:33,226 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 04:23:33,226 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 [2023-09-01 04:23:33,238 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 [2023-09-01 04:23:33,244 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 [2023-09-01 04:23:34,104 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 04:23:34,104 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 04:23:34,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1023928306] [2023-09-01 04:23:34,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1023928306] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:23:34,105 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-09-01 04:23:34,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-09-01 04:23:34,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466475097] [2023-09-01 04:23:34,105 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-09-01 04:23:34,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 04:23:34,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 04:23:34,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 04:23:34,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-09-01 04:23:34,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 533 [2023-09-01 04:23:34,851 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) [2023-09-01 04:23:34,851 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:23:34,851 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 533 [2023-09-01 04:23:34,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:23:38,548 INFO L130 PetriNetUnfolder]: 6123/11487 cut-off events. [2023-09-01 04:23:38,549 INFO L131 PetriNetUnfolder]: For 66791/66791 co-relation queries the response was YES. [2023-09-01 04:23:38,689 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. [2023-09-01 04:23:38,730 INFO L137 encePairwiseOnDemand]: 527/533 looper letters, 129 selfloop transitions, 57 changer transitions 0/186 dead transitions. [2023-09-01 04:23:38,730 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 186 transitions, 2001 flow [2023-09-01 04:23:38,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-09-01 04:23:38,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-09-01 04:23:38,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2805 transitions. [2023-09-01 04:23:38,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40482032039255306 [2023-09-01 04:23:38,735 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2805 transitions. [2023-09-01 04:23:38,735 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2805 transitions. [2023-09-01 04:23:38,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:23:38,736 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2805 transitions. [2023-09-01 04:23:38,738 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) [2023-09-01 04:23:38,741 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) [2023-09-01 04:23:38,742 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) [2023-09-01 04:23:38,742 INFO L175 Difference]: Start difference. First operand has 156 places, 127 transitions, 1331 flow. Second operand 13 states and 2805 transitions. [2023-09-01 04:23:38,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 186 transitions, 2001 flow [2023-09-01 04:23:39,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 186 transitions, 1882 flow, removed 20 selfloop flow, removed 6 redundant places. [2023-09-01 04:23:39,593 INFO L231 Difference]: Finished difference. Result has 168 places, 141 transitions, 1518 flow [2023-09-01 04:23:39,593 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} [2023-09-01 04:23:39,593 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 120 predicate places. [2023-09-01 04:23:39,593 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 141 transitions, 1518 flow [2023-09-01 04:23:39,594 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) [2023-09-01 04:23:39,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:23:39,594 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:23:39,602 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 [2023-09-01 04:23:39,802 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 [2023-09-01 04:23:39,802 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-09-01 04:23:39,803 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:23:39,803 INFO L85 PathProgramCache]: Analyzing trace with hash -37460335, now seen corresponding path program 1 times [2023-09-01 04:23:39,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 04:23:39,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2025109716] [2023-09-01 04:23:39,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:23:39,803 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 [2023-09-01 04:23:39,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 04:23:39,805 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) [2023-09-01 04:23:39,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-09-01 04:23:39,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:23:39,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 04:23:39,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:23:40,252 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 04:23:40,252 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:23:40,477 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 04:23:40,478 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 [2023-09-01 04:23:40,489 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 [2023-09-01 04:23:41,258 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 04:23:41,259 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 [2023-09-01 04:23:41,270 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 [2023-09-01 04:23:41,281 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 [2023-09-01 04:23:41,577 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 04:23:41,578 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 04:23:41,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2025109716] [2023-09-01 04:23:41,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2025109716] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:23:41,578 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-09-01 04:23:41,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-09-01 04:23:41,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137767273] [2023-09-01 04:23:41,578 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-09-01 04:23:41,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 04:23:41,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 04:23:41,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 04:23:41,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-09-01 04:23:41,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 533 [2023-09-01 04:23:41,936 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) [2023-09-01 04:23:41,936 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:23:41,936 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 533 [2023-09-01 04:23:41,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:23:46,942 INFO L130 PetriNetUnfolder]: 6403/12287 cut-off events. [2023-09-01 04:23:46,942 INFO L131 PetriNetUnfolder]: For 71451/71451 co-relation queries the response was YES. [2023-09-01 04:23:47,031 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. [2023-09-01 04:23:47,078 INFO L137 encePairwiseOnDemand]: 527/533 looper letters, 139 selfloop transitions, 66 changer transitions 0/205 dead transitions. [2023-09-01 04:23:47,079 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 205 transitions, 2250 flow [2023-09-01 04:23:47,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-09-01 04:23:47,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-09-01 04:23:47,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3041 transitions. [2023-09-01 04:23:47,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4075314928973466 [2023-09-01 04:23:47,085 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3041 transitions. [2023-09-01 04:23:47,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3041 transitions. [2023-09-01 04:23:47,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:23:47,086 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3041 transitions. [2023-09-01 04:23:47,089 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) [2023-09-01 04:23:47,094 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) [2023-09-01 04:23:47,095 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) [2023-09-01 04:23:47,095 INFO L175 Difference]: Start difference. First operand has 168 places, 141 transitions, 1518 flow. Second operand 14 states and 3041 transitions. [2023-09-01 04:23:47,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 205 transitions, 2250 flow [2023-09-01 04:23:48,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 205 transitions, 2143 flow, removed 29 selfloop flow, removed 4 redundant places. [2023-09-01 04:23:48,511 INFO L231 Difference]: Finished difference. Result has 183 places, 152 transitions, 1747 flow [2023-09-01 04:23:48,511 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} [2023-09-01 04:23:48,512 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 135 predicate places. [2023-09-01 04:23:48,512 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 152 transitions, 1747 flow [2023-09-01 04:23:48,512 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) [2023-09-01 04:23:48,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:23:48,512 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:23:48,521 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Ended with exit code 0 [2023-09-01 04:23:48,717 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 [2023-09-01 04:23:48,717 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-09-01 04:23:48,717 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:23:48,718 INFO L85 PathProgramCache]: Analyzing trace with hash 2036223251, now seen corresponding path program 2 times [2023-09-01 04:23:48,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 04:23:48,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [909376798] [2023-09-01 04:23:48,718 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 04:23:48,718 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 [2023-09-01 04:23:48,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 04:23:48,719 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) [2023-09-01 04:23:48,722 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 [2023-09-01 04:23:48,902 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 04:23:48,902 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 04:23:48,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 04:23:48,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:23:49,172 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 04:23:49,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:23:49,393 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 04:23:49,394 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 [2023-09-01 04:23:49,401 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 [2023-09-01 04:23:49,408 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 [2023-09-01 04:23:49,613 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 04:23:49,613 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 [2023-09-01 04:23:49,642 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 [2023-09-01 04:23:50,407 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 04:23:50,408 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 04:23:50,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [909376798] [2023-09-01 04:23:50,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [909376798] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:23:50,408 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-09-01 04:23:50,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-09-01 04:23:50,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875194073] [2023-09-01 04:23:50,408 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-09-01 04:23:50,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 04:23:50,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 04:23:50,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 04:23:50,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-09-01 04:23:51,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 533 [2023-09-01 04:23:51,185 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) [2023-09-01 04:23:51,185 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:23:51,186 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 533 [2023-09-01 04:23:51,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:23:56,791 INFO L130 PetriNetUnfolder]: 7563/14007 cut-off events. [2023-09-01 04:23:56,791 INFO L131 PetriNetUnfolder]: For 107151/107151 co-relation queries the response was YES. [2023-09-01 04:23:56,875 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. [2023-09-01 04:23:56,918 INFO L137 encePairwiseOnDemand]: 527/533 looper letters, 134 selfloop transitions, 94 changer transitions 0/228 dead transitions. [2023-09-01 04:23:56,918 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 228 transitions, 2768 flow [2023-09-01 04:23:56,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-09-01 04:23:56,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-09-01 04:23:56,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3473 transitions. [2023-09-01 04:23:56,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4072467166979362 [2023-09-01 04:23:56,923 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3473 transitions. [2023-09-01 04:23:56,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3473 transitions. [2023-09-01 04:23:56,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:23:56,924 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3473 transitions. [2023-09-01 04:23:56,927 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) [2023-09-01 04:23:56,930 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) [2023-09-01 04:23:56,930 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) [2023-09-01 04:23:56,931 INFO L175 Difference]: Start difference. First operand has 183 places, 152 transitions, 1747 flow. Second operand 16 states and 3473 transitions. [2023-09-01 04:23:56,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 228 transitions, 2768 flow [2023-09-01 04:23:59,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 228 transitions, 2632 flow, removed 52 selfloop flow, removed 5 redundant places. [2023-09-01 04:23:59,239 INFO L231 Difference]: Finished difference. Result has 193 places, 177 transitions, 2245 flow [2023-09-01 04:23:59,240 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} [2023-09-01 04:23:59,240 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 145 predicate places. [2023-09-01 04:23:59,240 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 177 transitions, 2245 flow [2023-09-01 04:23:59,241 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) [2023-09-01 04:23:59,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:23:59,241 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:23:59,252 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 [2023-09-01 04:23:59,450 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 [2023-09-01 04:23:59,450 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-09-01 04:23:59,450 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:23:59,451 INFO L85 PathProgramCache]: Analyzing trace with hash 711736033, now seen corresponding path program 5 times [2023-09-01 04:23:59,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 04:23:59,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1984451257] [2023-09-01 04:23:59,451 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-09-01 04:23:59,451 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 [2023-09-01 04:23:59,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 04:23:59,452 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) [2023-09-01 04:23:59,453 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 [2023-09-01 04:23:59,585 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 04:23:59,585 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 04:23:59,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 04:23:59,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:23:59,832 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 04:23:59,832 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 [2023-09-01 04:23:59,846 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 [2023-09-01 04:23:59,957 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 04:23:59,957 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:24:00,420 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 04:24:00,420 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 [2023-09-01 04:24:00,436 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 [2023-09-01 04:24:00,452 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 [2023-09-01 04:24:00,957 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 04:24:00,957 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 04:24:00,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1984451257] [2023-09-01 04:24:00,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1984451257] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:24:00,957 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-09-01 04:24:00,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-09-01 04:24:00,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717681274] [2023-09-01 04:24:00,958 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-09-01 04:24:00,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 04:24:00,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 04:24:00,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 04:24:00,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-09-01 04:24:01,167 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 533 [2023-09-01 04:24:01,169 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) [2023-09-01 04:24:01,169 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:24:01,169 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 533 [2023-09-01 04:24:01,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:24:05,994 INFO L130 PetriNetUnfolder]: 9303/17307 cut-off events. [2023-09-01 04:24:05,994 INFO L131 PetriNetUnfolder]: For 128921/128921 co-relation queries the response was YES. [2023-09-01 04:24:06,280 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. [2023-09-01 04:24:06,345 INFO L137 encePairwiseOnDemand]: 527/533 looper letters, 179 selfloop transitions, 66 changer transitions 0/245 dead transitions. [2023-09-01 04:24:06,345 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 245 transitions, 3406 flow [2023-09-01 04:24:06,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-09-01 04:24:06,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-09-01 04:24:06,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2374 transitions. [2023-09-01 04:24:06,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.404912161009722 [2023-09-01 04:24:06,349 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2374 transitions. [2023-09-01 04:24:06,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2374 transitions. [2023-09-01 04:24:06,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:24:06,350 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2374 transitions. [2023-09-01 04:24:06,352 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) [2023-09-01 04:24:06,355 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) [2023-09-01 04:24:06,355 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) [2023-09-01 04:24:06,356 INFO L175 Difference]: Start difference. First operand has 193 places, 177 transitions, 2245 flow. Second operand 11 states and 2374 transitions. [2023-09-01 04:24:06,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 245 transitions, 3406 flow [2023-09-01 04:24:13,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 245 transitions, 2980 flow, removed 197 selfloop flow, removed 5 redundant places. [2023-09-01 04:24:13,641 INFO L231 Difference]: Finished difference. Result has 204 places, 193 transitions, 2332 flow [2023-09-01 04:24:13,641 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} [2023-09-01 04:24:13,642 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 156 predicate places. [2023-09-01 04:24:13,642 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 193 transitions, 2332 flow [2023-09-01 04:24:13,642 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) [2023-09-01 04:24:13,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:24:13,643 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:24:13,652 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 [2023-09-01 04:24:13,851 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 [2023-09-01 04:24:13,851 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-09-01 04:24:13,853 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:24:13,853 INFO L85 PathProgramCache]: Analyzing trace with hash -2107701323, now seen corresponding path program 6 times [2023-09-01 04:24:13,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 04:24:13,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [10589143] [2023-09-01 04:24:13,854 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-09-01 04:24:13,854 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 [2023-09-01 04:24:13,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 04:24:13,855 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) [2023-09-01 04:24:13,857 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 [2023-09-01 04:24:14,043 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-09-01 04:24:14,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 04:24:14,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 04:24:14,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:24:14,437 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 04:24:14,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:24:14,747 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 04:24:14,748 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 [2023-09-01 04:24:14,761 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 [2023-09-01 04:24:15,567 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 04:24:15,567 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 164 treesize of output 129 [2023-09-01 04:24:15,576 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 [2023-09-01 04:24:15,585 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 127 treesize of output 125 [2023-09-01 04:24:15,871 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 04:24:15,871 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 04:24:15,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [10589143] [2023-09-01 04:24:15,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [10589143] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:24:15,872 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-09-01 04:24:15,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-09-01 04:24:15,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728994192] [2023-09-01 04:24:15,872 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-09-01 04:24:15,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 04:24:15,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 04:24:15,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 04:24:15,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-09-01 04:24:16,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 533 [2023-09-01 04:24:16,795 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) [2023-09-01 04:24:16,795 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:24:16,795 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 533 [2023-09-01 04:24:16,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:24:22,780 INFO L130 PetriNetUnfolder]: 9603/18247 cut-off events. [2023-09-01 04:24:22,780 INFO L131 PetriNetUnfolder]: For 116199/116199 co-relation queries the response was YES. [2023-09-01 04:24:22,924 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. [2023-09-01 04:24:22,999 INFO L137 encePairwiseOnDemand]: 527/533 looper letters, 169 selfloop transitions, 97 changer transitions 0/266 dead transitions. [2023-09-01 04:24:22,999 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 266 transitions, 3446 flow [2023-09-01 04:24:23,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-09-01 04:24:23,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-09-01 04:24:23,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3017 transitions. [2023-09-01 04:24:23,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40431519699812385 [2023-09-01 04:24:23,005 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3017 transitions. [2023-09-01 04:24:23,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3017 transitions. [2023-09-01 04:24:23,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:24:23,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3017 transitions. [2023-09-01 04:24:23,025 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) [2023-09-01 04:24:23,032 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) [2023-09-01 04:24:23,033 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) [2023-09-01 04:24:23,033 INFO L175 Difference]: Start difference. First operand has 204 places, 193 transitions, 2332 flow. Second operand 14 states and 3017 transitions. [2023-09-01 04:24:23,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 266 transitions, 3446 flow [2023-09-01 04:24:25,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 266 transitions, 3298 flow, removed 35 selfloop flow, removed 4 redundant places. [2023-09-01 04:24:25,488 INFO L231 Difference]: Finished difference. Result has 217 places, 223 transitions, 2904 flow [2023-09-01 04:24:25,488 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} [2023-09-01 04:24:25,488 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 169 predicate places. [2023-09-01 04:24:25,489 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 223 transitions, 2904 flow [2023-09-01 04:24:25,489 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) [2023-09-01 04:24:25,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:24:25,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:24:25,499 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 [2023-09-01 04:24:25,697 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 [2023-09-01 04:24:25,697 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-09-01 04:24:25,698 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:24:25,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1419159067, now seen corresponding path program 7 times [2023-09-01 04:24:25,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 04:24:25,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1524675770] [2023-09-01 04:24:25,699 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-09-01 04:24:25,699 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 [2023-09-01 04:24:25,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 04:24:25,700 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) [2023-09-01 04:24:25,702 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 [2023-09-01 04:24:25,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:24:25,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 04:24:25,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:24:26,303 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 04:24:26,303 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 [2023-09-01 04:24:26,313 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 [2023-09-01 04:24:26,320 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 [2023-09-01 04:24:26,364 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 04:24:26,365 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 [2023-09-01 04:24:26,378 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 [2023-09-01 04:24:26,521 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 04:24:26,522 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:24:27,154 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 04:24:27,154 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 [2023-09-01 04:24:27,166 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 [2023-09-01 04:24:27,188 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 [2023-09-01 04:24:28,392 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 04:24:28,393 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 04:24:28,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1524675770] [2023-09-01 04:24:28,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1524675770] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:24:28,393 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-09-01 04:24:28,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-09-01 04:24:28,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572931755] [2023-09-01 04:24:28,394 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-09-01 04:24:28,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 04:24:28,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 04:24:28,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 04:24:28,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-09-01 04:24:29,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 533 [2023-09-01 04:24:29,037 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) [2023-09-01 04:24:29,037 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:24:29,037 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 533 [2023-09-01 04:24:29,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:24:35,911 INFO L130 PetriNetUnfolder]: 9563/18047 cut-off events. [2023-09-01 04:24:35,911 INFO L131 PetriNetUnfolder]: For 119027/119027 co-relation queries the response was YES. [2023-09-01 04:24:36,288 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. [2023-09-01 04:24:36,357 INFO L137 encePairwiseOnDemand]: 527/533 looper letters, 176 selfloop transitions, 91 changer transitions 0/267 dead transitions. [2023-09-01 04:24:36,358 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 267 transitions, 3658 flow [2023-09-01 04:24:36,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-09-01 04:24:36,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-09-01 04:24:36,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2805 transitions. [2023-09-01 04:24:36,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40482032039255306 [2023-09-01 04:24:36,362 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2805 transitions. [2023-09-01 04:24:36,362 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2805 transitions. [2023-09-01 04:24:36,363 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:24:36,363 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2805 transitions. [2023-09-01 04:24:36,365 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) [2023-09-01 04:24:36,368 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) [2023-09-01 04:24:36,371 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) [2023-09-01 04:24:36,372 INFO L175 Difference]: Start difference. First operand has 217 places, 223 transitions, 2904 flow. Second operand 13 states and 2805 transitions. [2023-09-01 04:24:36,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 267 transitions, 3658 flow [2023-09-01 04:24:39,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 267 transitions, 3450 flow, removed 82 selfloop flow, removed 4 redundant places. [2023-09-01 04:24:39,700 INFO L231 Difference]: Finished difference. Result has 226 places, 225 transitions, 2928 flow [2023-09-01 04:24:39,700 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} [2023-09-01 04:24:39,701 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 178 predicate places. [2023-09-01 04:24:39,701 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 225 transitions, 2928 flow [2023-09-01 04:24:39,701 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) [2023-09-01 04:24:39,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:24:39,701 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:24:39,710 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 [2023-09-01 04:24:39,911 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 [2023-09-01 04:24:39,911 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-09-01 04:24:39,912 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:24:39,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1161032399, now seen corresponding path program 8 times [2023-09-01 04:24:39,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 04:24:39,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [419086194] [2023-09-01 04:24:39,912 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 04:24:39,912 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 [2023-09-01 04:24:39,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 04:24:39,914 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) [2023-09-01 04:24:39,916 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 [2023-09-01 04:24:40,102 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 04:24:40,102 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 04:24:40,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 04:24:40,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:24:40,394 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 04:24:40,394 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 [2023-09-01 04:24:40,408 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 [2023-09-01 04:24:40,504 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 04:24:40,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:24:40,887 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 04:24:40,888 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 [2023-09-01 04:24:40,899 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 [2023-09-01 04:24:40,906 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 [2023-09-01 04:24:41,794 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 04:24:41,794 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 04:24:41,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [419086194] [2023-09-01 04:24:41,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [419086194] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:24:41,794 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-09-01 04:24:41,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-09-01 04:24:41,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049600096] [2023-09-01 04:24:41,794 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-09-01 04:24:41,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 04:24:41,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 04:24:41,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 04:24:41,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-09-01 04:24:42,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 533 [2023-09-01 04:24:42,674 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) [2023-09-01 04:24:42,674 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:24:42,674 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 533 [2023-09-01 04:24:42,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:24:48,715 INFO L130 PetriNetUnfolder]: 9603/18007 cut-off events. [2023-09-01 04:24:48,715 INFO L131 PetriNetUnfolder]: For 121282/121282 co-relation queries the response was YES. [2023-09-01 04:24:49,144 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. [2023-09-01 04:24:49,222 INFO L137 encePairwiseOnDemand]: 527/533 looper letters, 170 selfloop transitions, 89 changer transitions 0/259 dead transitions. [2023-09-01 04:24:49,223 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 259 transitions, 3647 flow [2023-09-01 04:24:49,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-09-01 04:24:49,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-09-01 04:24:49,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2789 transitions. [2023-09-01 04:24:49,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40251118487516235 [2023-09-01 04:24:49,232 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2789 transitions. [2023-09-01 04:24:49,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2789 transitions. [2023-09-01 04:24:49,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:24:49,234 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2789 transitions. [2023-09-01 04:24:49,239 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) [2023-09-01 04:24:49,242 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) [2023-09-01 04:24:49,243 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) [2023-09-01 04:24:49,243 INFO L175 Difference]: Start difference. First operand has 226 places, 225 transitions, 2928 flow. Second operand 13 states and 2789 transitions. [2023-09-01 04:24:49,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 259 transitions, 3647 flow [2023-09-01 04:24:52,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 259 transitions, 3484 flow, removed 14 selfloop flow, removed 7 redundant places. [2023-09-01 04:24:52,513 INFO L231 Difference]: Finished difference. Result has 234 places, 229 transitions, 3032 flow [2023-09-01 04:24:52,513 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} [2023-09-01 04:24:52,522 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 186 predicate places. [2023-09-01 04:24:52,523 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 229 transitions, 3032 flow [2023-09-01 04:24:52,523 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) [2023-09-01 04:24:52,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:24:52,523 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:24:52,533 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 [2023-09-01 04:24:52,724 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 [2023-09-01 04:24:52,725 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-09-01 04:24:52,725 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:24:52,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1680810820, now seen corresponding path program 3 times [2023-09-01 04:24:52,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 04:24:52,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [716801837] [2023-09-01 04:24:52,726 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 04:24:52,726 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 [2023-09-01 04:24:52,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 04:24:52,727 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) [2023-09-01 04:24:52,729 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 [2023-09-01 04:24:52,923 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-09-01 04:24:52,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 04:24:52,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 04:24:52,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:24:53,217 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 04:24:53,218 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:24:53,443 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 04:24:53,443 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 [2023-09-01 04:24:53,448 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 [2023-09-01 04:24:53,453 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 [2023-09-01 04:24:53,647 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 04:24:53,648 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 [2023-09-01 04:24:53,662 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 [2023-09-01 04:24:54,424 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 04:24:54,424 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 04:24:54,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [716801837] [2023-09-01 04:24:54,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [716801837] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:24:54,424 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-09-01 04:24:54,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-09-01 04:24:54,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912706773] [2023-09-01 04:24:54,425 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-09-01 04:24:54,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-09-01 04:24:54,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 04:24:54,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-09-01 04:24:54,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-09-01 04:24:54,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 533 [2023-09-01 04:24:54,873 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) [2023-09-01 04:24:54,873 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:24:54,873 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 533 [2023-09-01 04:24:54,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:25:01,799 INFO L130 PetriNetUnfolder]: 9743/18587 cut-off events. [2023-09-01 04:25:01,799 INFO L131 PetriNetUnfolder]: For 136131/136131 co-relation queries the response was YES. [2023-09-01 04:25:01,932 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. [2023-09-01 04:25:01,995 INFO L137 encePairwiseOnDemand]: 527/533 looper letters, 204 selfloop transitions, 90 changer transitions 0/294 dead transitions. [2023-09-01 04:25:01,995 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 294 transitions, 3837 flow [2023-09-01 04:25:01,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-09-01 04:25:01,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-09-01 04:25:01,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3428 transitions. [2023-09-01 04:25:02,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40196998123827393 [2023-09-01 04:25:02,002 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3428 transitions. [2023-09-01 04:25:02,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3428 transitions. [2023-09-01 04:25:02,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:25:02,005 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3428 transitions. [2023-09-01 04:25:02,008 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) [2023-09-01 04:25:02,019 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) [2023-09-01 04:25:02,033 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) [2023-09-01 04:25:02,033 INFO L175 Difference]: Start difference. First operand has 234 places, 229 transitions, 3032 flow. Second operand 16 states and 3428 transitions. [2023-09-01 04:25:02,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 294 transitions, 3837 flow [2023-09-01 04:25:04,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 294 transitions, 3708 flow, removed 11 selfloop flow, removed 8 redundant places. [2023-09-01 04:25:04,908 INFO L231 Difference]: Finished difference. Result has 247 places, 236 transitions, 3177 flow [2023-09-01 04:25:04,909 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} [2023-09-01 04:25:04,909 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 199 predicate places. [2023-09-01 04:25:04,909 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 236 transitions, 3177 flow [2023-09-01 04:25:04,909 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) [2023-09-01 04:25:04,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:25:04,910 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:25:04,921 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 [2023-09-01 04:25:05,115 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 [2023-09-01 04:25:05,116 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-09-01 04:25:05,116 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:25:05,116 INFO L85 PathProgramCache]: Analyzing trace with hash 350963898, now seen corresponding path program 4 times [2023-09-01 04:25:05,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 04:25:05,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1318614199] [2023-09-01 04:25:05,117 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-09-01 04:25:05,117 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 [2023-09-01 04:25:05,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 04:25:05,119 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) [2023-09-01 04:25:05,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2023-09-01 04:25:05,296 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-09-01 04:25:05,296 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 04:25:05,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 04:25:05,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:25:05,697 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 04:25:05,697 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 [2023-09-01 04:25:05,702 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 [2023-09-01 04:25:05,707 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 [2023-09-01 04:25:05,759 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 04:25:05,760 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 [2023-09-01 04:25:05,775 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 [2023-09-01 04:25:06,144 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 04:25:06,144 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:25:06,421 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 04:25:06,422 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 [2023-09-01 04:25:06,432 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 [2023-09-01 04:25:06,439 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 [2023-09-01 04:25:07,479 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 04:25:07,479 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 04:25:07,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1318614199] [2023-09-01 04:25:07,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1318614199] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:25:07,480 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-09-01 04:25:07,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-09-01 04:25:07,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863260502] [2023-09-01 04:25:07,480 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-09-01 04:25:07,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-09-01 04:25:07,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 04:25:07,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-09-01 04:25:07,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2023-09-01 04:25:09,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 533 [2023-09-01 04:25:09,218 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) [2023-09-01 04:25:09,218 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:25:09,218 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 533 [2023-09-01 04:25:09,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:25:17,805 INFO L130 PetriNetUnfolder]: 11063/20667 cut-off events. [2023-09-01 04:25:17,806 INFO L131 PetriNetUnfolder]: For 161336/161336 co-relation queries the response was YES. [2023-09-01 04:25:17,990 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. [2023-09-01 04:25:18,078 INFO L137 encePairwiseOnDemand]: 527/533 looper letters, 182 selfloop transitions, 138 changer transitions 0/320 dead transitions. [2023-09-01 04:25:18,078 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 320 transitions, 4443 flow [2023-09-01 04:25:18,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-09-01 04:25:18,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-09-01 04:25:18,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3678 transitions. [2023-09-01 04:25:18,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4059154618695508 [2023-09-01 04:25:18,084 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3678 transitions. [2023-09-01 04:25:18,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3678 transitions. [2023-09-01 04:25:18,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:25:18,084 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3678 transitions. [2023-09-01 04:25:18,087 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) [2023-09-01 04:25:18,092 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) [2023-09-01 04:25:18,093 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) [2023-09-01 04:25:18,093 INFO L175 Difference]: Start difference. First operand has 247 places, 236 transitions, 3177 flow. Second operand 17 states and 3678 transitions. [2023-09-01 04:25:18,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 320 transitions, 4443 flow [2023-09-01 04:25:21,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 320 transitions, 4211 flow, removed 15 selfloop flow, removed 9 redundant places. [2023-09-01 04:25:21,398 INFO L231 Difference]: Finished difference. Result has 258 places, 262 transitions, 3701 flow [2023-09-01 04:25:21,398 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} [2023-09-01 04:25:21,399 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 210 predicate places. [2023-09-01 04:25:21,399 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 262 transitions, 3701 flow [2023-09-01 04:25:21,400 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) [2023-09-01 04:25:21,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:25:21,400 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:25:21,412 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2023-09-01 04:25:21,611 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 [2023-09-01 04:25:21,612 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-09-01 04:25:21,612 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:25:21,612 INFO L85 PathProgramCache]: Analyzing trace with hash 760639718, now seen corresponding path program 5 times [2023-09-01 04:25:21,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 04:25:21,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1543615581] [2023-09-01 04:25:21,613 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-09-01 04:25:21,613 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 [2023-09-01 04:25:21,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 04:25:21,614 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) [2023-09-01 04:25:21,616 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 [2023-09-01 04:25:21,917 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 04:25:21,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 04:25:21,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 24 conjunts are in the unsatisfiable core [2023-09-01 04:25:21,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:29:06,272 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") [2023-09-01 04:29:06,273 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 04:29:06,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1543615581] [2023-09-01 04:29:06,273 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2023-09-01 04:29:06,281 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 [2023-09-01 04:29:06,284 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 [2023-09-01 04:29:06,474 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 [2023-09-01 04:29:06,474 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 [2023-09-01 04:29:06,477 INFO L158 Benchmark]: Toolchain (without parser) took 484160.34ms. Allocated memory was 67.1MB in the beginning and 5.4GB in the end (delta: 5.3GB). Free memory was 42.6MB in the beginning and 2.7GB in the end (delta: -2.6GB). Peak memory consumption was 2.7GB. Max. memory is 16.1GB. [2023-09-01 04:29:06,478 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 54.5MB. Free memory was 32.5MB in the beginning and 32.5MB in the end (delta: 40.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 04:29:06,478 INFO L158 Benchmark]: CACSL2BoogieTranslator took 254.91ms. Allocated memory is still 67.1MB. Free memory was 42.4MB in the beginning and 47.5MB in the end (delta: -5.0MB). Peak memory consumption was 16.0MB. Max. memory is 16.1GB. [2023-09-01 04:29:06,478 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.16ms. Allocated memory is still 67.1MB. Free memory was 47.5MB in the beginning and 45.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 04:29:06,478 INFO L158 Benchmark]: Boogie Preprocessor took 41.23ms. Allocated memory is still 67.1MB. Free memory was 45.2MB in the beginning and 43.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 04:29:06,479 INFO L158 Benchmark]: RCFGBuilder took 709.83ms. Allocated memory is still 67.1MB. Free memory was 43.4MB in the beginning and 34.3MB in the end (delta: 9.1MB). Peak memory consumption was 18.3MB. Max. memory is 16.1GB. [2023-09-01 04:29:06,479 INFO L158 Benchmark]: TraceAbstraction took 483103.07ms. Allocated memory was 67.1MB in the beginning and 5.4GB in the end (delta: 5.3GB). Free memory was 33.8MB in the beginning and 2.7GB in the end (delta: -2.6GB). Peak memory consumption was 2.7GB. Max. memory is 16.1GB. [2023-09-01 04:29:06,480 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 54.5MB. Free memory was 32.5MB in the beginning and 32.5MB in the end (delta: 40.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 254.91ms. Allocated memory is still 67.1MB. Free memory was 42.4MB in the beginning and 47.5MB in the end (delta: -5.0MB). Peak memory consumption was 16.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.16ms. Allocated memory is still 67.1MB. Free memory was 47.5MB in the beginning and 45.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.23ms. Allocated memory is still 67.1MB. Free memory was 45.2MB in the beginning and 43.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 709.83ms. Allocated memory is still 67.1MB. Free memory was 43.4MB in the beginning and 34.3MB in the end (delta: 9.1MB). Peak memory consumption was 18.3MB. Max. memory is 16.1GB. * TraceAbstraction took 483103.07ms. Allocated memory was 67.1MB in the beginning and 5.4GB in the end (delta: 5.3GB). Free memory was 33.8MB in the beginning and 2.7GB in the end (delta: -2.6GB). Peak memory consumption was 2.7GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 40.0s, 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")