./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/weaver/chl-name-comparator-subst.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/weaver/chl-name-comparator-subst.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 83223bd52506e4247e7ac7ce7a49284be0292b773b9e827e6221f58042ba0602 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 22:45:44,928 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 22:45:44,931 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 22:45:44,970 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 22:45:44,971 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 22:45:44,973 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 22:45:44,975 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 22:45:44,978 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 22:45:44,980 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 22:45:44,984 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 22:45:44,985 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 22:45:44,987 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 22:45:44,987 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 22:45:44,989 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 22:45:44,991 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 22:45:44,994 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 22:45:44,995 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 22:45:44,996 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 22:45:44,998 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 22:45:45,002 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 22:45:45,013 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 22:45:45,014 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 22:45:45,015 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 22:45:45,016 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 22:45:45,019 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 22:45:45,022 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 22:45:45,022 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 22:45:45,023 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 22:45:45,025 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 22:45:45,025 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 22:45:45,026 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 22:45:45,026 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 22:45:45,028 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 22:45:45,029 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 22:45:45,030 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 22:45:45,030 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 22:45:45,031 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 22:45:45,031 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 22:45:45,031 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 22:45:45,032 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 22:45:45,032 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 22:45:45,034 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-29 22:45:45,066 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 22:45:45,066 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 22:45:45,067 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 22:45:45,067 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 22:45:45,068 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 22:45:45,068 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 22:45:45,069 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 22:45:45,069 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 22:45:45,069 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 22:45:45,069 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 22:45:45,070 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 22:45:45,070 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 22:45:45,070 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 22:45:45,071 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 22:45:45,071 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 22:45:45,071 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-29 22:45:45,071 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-29 22:45:45,071 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-29 22:45:45,071 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 22:45:45,072 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-29 22:45:45,072 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 22:45:45,072 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 22:45:45,072 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 22:45:45,072 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 22:45:45,073 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 22:45:45,073 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 22:45:45,073 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 22:45:45,073 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 22:45:45,073 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 22:45:45,074 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 22:45:45,074 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 22:45:45,074 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 22:45:45,074 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 22:45:45,074 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 22:45:45,075 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 83223bd52506e4247e7ac7ce7a49284be0292b773b9e827e6221f58042ba0602 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 22:45:45,370 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 22:45:45,394 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 22:45:45,396 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 22:45:45,397 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 22:45:45,398 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 22:45:45,399 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-name-comparator-subst.wvr.c [2023-08-29 22:45:46,544 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 22:45:46,715 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 22:45:46,715 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-name-comparator-subst.wvr.c [2023-08-29 22:45:46,721 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c53a02b2/49a58b76d8a6438fb34fc8e02a632976/FLAG3f7ce5a06 [2023-08-29 22:45:46,735 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c53a02b2/49a58b76d8a6438fb34fc8e02a632976 [2023-08-29 22:45:46,738 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 22:45:46,739 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 22:45:46,741 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 22:45:46,741 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 22:45:46,743 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 22:45:46,744 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 10:45:46" (1/1) ... [2023-08-29 22:45:46,745 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@750caaba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:45:46, skipping insertion in model container [2023-08-29 22:45:46,745 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 10:45:46" (1/1) ... [2023-08-29 22:45:46,751 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 22:45:46,767 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 22:45:46,916 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-name-comparator-subst.wvr.c[4836,4849] [2023-08-29 22:45:46,925 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 22:45:46,936 ERROR L324 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-08-29 22:45:46,936 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4bcf2c69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:45:46, skipping insertion in model container [2023-08-29 22:45:46,937 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 22:45:46,937 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-08-29 22:45:46,939 INFO L158 Benchmark]: Toolchain (without parser) took 198.44ms. Allocated memory is still 67.1MB. Free memory was 38.1MB in the beginning and 27.3MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-08-29 22:45:46,939 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 67.1MB. Free memory is still 45.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 22:45:46,940 INFO L158 Benchmark]: CACSL2BoogieTranslator took 196.45ms. Allocated memory is still 67.1MB. Free memory was 37.8MB in the beginning and 27.3MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-08-29 22:45:46,941 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 67.1MB. Free memory is still 45.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 196.45ms. Allocated memory is still 67.1MB. Free memory was 37.8MB in the beginning and 27.3MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 151]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/weaver/chl-name-comparator-subst.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 83223bd52506e4247e7ac7ce7a49284be0292b773b9e827e6221f58042ba0602 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 22:45:48,623 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 22:45:48,626 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 22:45:48,668 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 22:45:48,669 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 22:45:48,672 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 22:45:48,673 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 22:45:48,676 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 22:45:48,678 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 22:45:48,682 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 22:45:48,683 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 22:45:48,686 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 22:45:48,686 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 22:45:48,688 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 22:45:48,689 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 22:45:48,695 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 22:45:48,696 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 22:45:48,697 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 22:45:48,699 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 22:45:48,705 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 22:45:48,714 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 22:45:48,715 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 22:45:48,716 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 22:45:48,716 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 22:45:48,723 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 22:45:48,723 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 22:45:48,723 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 22:45:48,725 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 22:45:48,726 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 22:45:48,727 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 22:45:48,727 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 22:45:48,729 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 22:45:48,731 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 22:45:48,731 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 22:45:48,732 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 22:45:48,733 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 22:45:48,733 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 22:45:48,733 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 22:45:48,734 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 22:45:48,734 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 22:45:48,735 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 22:45:48,736 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-08-29 22:45:48,772 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 22:45:48,773 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 22:45:48,774 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 22:45:48,774 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 22:45:48,775 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 22:45:48,775 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 22:45:48,775 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 22:45:48,776 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 22:45:48,776 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 22:45:48,776 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 22:45:48,777 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 22:45:48,777 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 22:45:48,777 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 22:45:48,777 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 22:45:48,777 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 22:45:48,778 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-29 22:45:48,778 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-29 22:45:48,778 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-29 22:45:48,778 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 22:45:48,778 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-29 22:45:48,779 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-08-29 22:45:48,779 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-08-29 22:45:48,779 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 22:45:48,779 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 22:45:48,779 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 22:45:48,780 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 22:45:48,780 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 22:45:48,780 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 22:45:48,780 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 22:45:48,780 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 22:45:48,780 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-08-29 22:45:48,781 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-08-29 22:45:48,781 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 22:45:48,781 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 22:45:48,781 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 22:45:48,782 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-08-29 22:45:48,782 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 22:45:48,782 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 83223bd52506e4247e7ac7ce7a49284be0292b773b9e827e6221f58042ba0602 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 22:45:49,058 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 22:45:49,074 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 22:45:49,078 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 22:45:49,079 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 22:45:49,079 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 22:45:49,081 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-name-comparator-subst.wvr.c [2023-08-29 22:45:50,223 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 22:45:50,496 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 22:45:50,496 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-name-comparator-subst.wvr.c [2023-08-29 22:45:50,505 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88f85875d/94f30c12a64e4d20be02d2fc1dfe7457/FLAG8e1aed69c [2023-08-29 22:45:50,527 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88f85875d/94f30c12a64e4d20be02d2fc1dfe7457 [2023-08-29 22:45:50,529 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 22:45:50,530 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 22:45:50,531 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 22:45:50,532 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 22:45:50,536 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 22:45:50,536 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 10:45:50" (1/1) ... [2023-08-29 22:45:50,537 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@516e1b69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:45:50, skipping insertion in model container [2023-08-29 22:45:50,537 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 10:45:50" (1/1) ... [2023-08-29 22:45:50,542 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 22:45:50,567 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 22:45:50,736 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-name-comparator-subst.wvr.c[4836,4849] [2023-08-29 22:45:50,751 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 22:45:50,768 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-08-29 22:45:50,774 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 22:45:50,804 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-name-comparator-subst.wvr.c[4836,4849] [2023-08-29 22:45:50,825 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 22:45:50,833 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 22:45:50,871 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-name-comparator-subst.wvr.c[4836,4849] [2023-08-29 22:45:50,883 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 22:45:50,906 INFO L208 MainTranslator]: Completed translation [2023-08-29 22:45:50,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:45:50 WrapperNode [2023-08-29 22:45:50,907 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 22:45:50,908 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 22:45:50,908 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 22:45:50,909 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 22:45:50,914 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:45:50" (1/1) ... [2023-08-29 22:45:50,940 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:45:50" (1/1) ... [2023-08-29 22:45:50,982 INFO L138 Inliner]: procedures = 28, calls = 44, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 297 [2023-08-29 22:45:50,986 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 22:45:50,987 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 22:45:50,988 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 22:45:50,988 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 22:45:50,996 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:45:50" (1/1) ... [2023-08-29 22:45:50,997 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:45:50" (1/1) ... [2023-08-29 22:45:51,011 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:45:50" (1/1) ... [2023-08-29 22:45:51,014 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:45:50" (1/1) ... [2023-08-29 22:45:51,036 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:45:50" (1/1) ... [2023-08-29 22:45:51,040 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:45:50" (1/1) ... [2023-08-29 22:45:51,058 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:45:50" (1/1) ... [2023-08-29 22:45:51,060 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:45:50" (1/1) ... [2023-08-29 22:45:51,063 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 22:45:51,064 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 22:45:51,064 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 22:45:51,064 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 22:45:51,065 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:45:50" (1/1) ... [2023-08-29 22:45:51,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 22:45:51,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 22:45:51,098 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-29 22:45:51,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-29 22:45:51,133 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 22:45:51,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-08-29 22:45:51,133 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 22:45:51,133 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-08-29 22:45:51,133 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-29 22:45:51,134 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-29 22:45:51,134 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-29 22:45:51,134 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-29 22:45:51,134 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-29 22:45:51,134 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-29 22:45:51,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-29 22:45:51,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 22:45:51,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 22:45:51,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 22:45:51,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-08-29 22:45:51,136 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-29 22:45:51,232 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 22:45:51,234 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 22:45:51,773 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 22:45:51,785 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 22:45:51,787 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-29 22:45:51,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:45:51 BoogieIcfgContainer [2023-08-29 22:45:51,791 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 22:45:51,793 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 22:45:51,793 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 22:45:51,796 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 22:45:51,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 10:45:50" (1/3) ... [2023-08-29 22:45:51,796 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15e7923c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 10:45:51, skipping insertion in model container [2023-08-29 22:45:51,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 10:45:50" (2/3) ... [2023-08-29 22:45:51,797 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15e7923c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 10:45:51, skipping insertion in model container [2023-08-29 22:45:51,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 10:45:51" (3/3) ... [2023-08-29 22:45:51,798 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-subst.wvr.c [2023-08-29 22:45:51,813 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 22:45:51,814 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2023-08-29 22:45:51,814 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 22:45:51,984 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-29 22:45:52,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 349 places, 365 transitions, 754 flow [2023-08-29 22:45:52,207 INFO L130 PetriNetUnfolder]: 26/362 cut-off events. [2023-08-29 22:45:52,207 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-29 22:45:52,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 375 conditions, 362 events. 26/362 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 927 event pairs, 0 based on Foata normal form. 0/314 useless extension candidates. Maximal degree in co-relation 263. Up to 2 conditions per place. [2023-08-29 22:45:52,218 INFO L82 GeneralOperation]: Start removeDead. Operand has 349 places, 365 transitions, 754 flow [2023-08-29 22:45:52,228 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 342 places, 358 transitions, 734 flow [2023-08-29 22:45:52,232 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 22:45:52,240 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 342 places, 358 transitions, 734 flow [2023-08-29 22:45:52,242 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 342 places, 358 transitions, 734 flow [2023-08-29 22:45:52,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 342 places, 358 transitions, 734 flow [2023-08-29 22:45:52,309 INFO L130 PetriNetUnfolder]: 26/358 cut-off events. [2023-08-29 22:45:52,309 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-29 22:45:52,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 371 conditions, 358 events. 26/358 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 926 event pairs, 0 based on Foata normal form. 0/311 useless extension candidates. Maximal degree in co-relation 263. Up to 2 conditions per place. [2023-08-29 22:45:52,330 INFO L119 LiptonReduction]: Number of co-enabled transitions 31488 [2023-08-29 22:46:12,705 INFO L134 LiptonReduction]: Checked pairs total: 27812 [2023-08-29 22:46:12,706 INFO L136 LiptonReduction]: Total number of compositions: 416 [2023-08-29 22:46:12,719 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 22:46:12,725 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;@7d07a0c8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 22:46:12,726 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2023-08-29 22:46:12,729 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-29 22:46:12,729 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 22:46:12,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:46:12,730 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-29 22:46:12,730 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-29 22:46:12,734 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:46:12,734 INFO L85 PathProgramCache]: Analyzing trace with hash 47277, now seen corresponding path program 1 times [2023-08-29 22:46:12,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 22:46:12,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [49377358] [2023-08-29 22:46:12,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:46:12,745 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:46:12,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 22:46:12,757 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 22:46:12,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-08-29 22:46:12,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:46:12,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-29 22:46:12,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:46:13,044 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2023-08-29 22:46:13,045 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 42 [2023-08-29 22:46:13,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:46:13,079 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 22:46:13,080 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 22:46:13,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [49377358] [2023-08-29 22:46:13,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [49377358] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:46:13,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:46:13,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 22:46:13,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847370411] [2023-08-29 22:46:13,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:46:13,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 22:46:13,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 22:46:13,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 22:46:13,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 22:46:13,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 331 out of 781 [2023-08-29 22:46:13,275 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 45 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 331.6666666666667) internal successors, (995), 3 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:13,275 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:46:13,275 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 331 of 781 [2023-08-29 22:46:13,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:46:14,217 INFO L130 PetriNetUnfolder]: 3633/5128 cut-off events. [2023-08-29 22:46:14,218 INFO L131 PetriNetUnfolder]: For 190/190 co-relation queries the response was YES. [2023-08-29 22:46:14,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10447 conditions, 5128 events. 3633/5128 cut-off events. For 190/190 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 23417 event pairs, 2856 based on Foata normal form. 0/2051 useless extension candidates. Maximal degree in co-relation 4490. Up to 2566 conditions per place. [2023-08-29 22:46:14,248 INFO L137 encePairwiseOnDemand]: 777/781 looper letters, 84 selfloop transitions, 2 changer transitions 0/86 dead transitions. [2023-08-29 22:46:14,248 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 86 transitions, 380 flow [2023-08-29 22:46:14,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 22:46:14,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 22:46:14,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1082 transitions. [2023-08-29 22:46:14,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46180110968843363 [2023-08-29 22:46:14,270 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1082 transitions. [2023-08-29 22:46:14,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1082 transitions. [2023-08-29 22:46:14,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:46:14,277 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1082 transitions. [2023-08-29 22:46:14,284 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 360.6666666666667) internal successors, (1082), 3 states have internal predecessors, (1082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:14,293 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 781.0) internal successors, (3124), 4 states have internal predecessors, (3124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:14,298 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 781.0) internal successors, (3124), 4 states have internal predecessors, (3124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:14,300 INFO L175 Difference]: Start difference. First operand has 51 places, 45 transitions, 108 flow. Second operand 3 states and 1082 transitions. [2023-08-29 22:46:14,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 86 transitions, 380 flow [2023-08-29 22:46:14,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 86 transitions, 356 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-29 22:46:14,310 INFO L231 Difference]: Finished difference. Result has 47 places, 45 transitions, 106 flow [2023-08-29 22:46:14,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=47, PETRI_TRANSITIONS=45} [2023-08-29 22:46:14,317 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -4 predicate places. [2023-08-29 22:46:14,318 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 45 transitions, 106 flow [2023-08-29 22:46:14,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 331.6666666666667) internal successors, (995), 3 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:14,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:46:14,322 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-29 22:46:14,339 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-08-29 22:46:14,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:46:14,532 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-29 22:46:14,532 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:46:14,532 INFO L85 PathProgramCache]: Analyzing trace with hash 47276, now seen corresponding path program 1 times [2023-08-29 22:46:14,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 22:46:14,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1284895795] [2023-08-29 22:46:14,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:46:14,533 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:46:14,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 22:46:14,541 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 22:46:14,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-08-29 22:46:14,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:46:14,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 22:46:14,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:46:14,674 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2023-08-29 22:46:14,675 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 50 [2023-08-29 22:46:14,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:46:14,691 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 22:46:14,691 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 22:46:14,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1284895795] [2023-08-29 22:46:14,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1284895795] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:46:14,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:46:14,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 22:46:14,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831014536] [2023-08-29 22:46:14,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:46:14,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 22:46:14,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 22:46:14,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 22:46:14,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 22:46:14,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 332 out of 781 [2023-08-29 22:46:14,792 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 45 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 332.6666666666667) internal successors, (998), 3 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:14,793 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:46:14,793 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 332 of 781 [2023-08-29 22:46:14,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:46:15,521 INFO L130 PetriNetUnfolder]: 3633/5126 cut-off events. [2023-08-29 22:46:15,521 INFO L131 PetriNetUnfolder]: For 40/40 co-relation queries the response was YES. [2023-08-29 22:46:15,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10323 conditions, 5126 events. 3633/5126 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 23463 event pairs, 2856 based on Foata normal form. 0/2053 useless extension candidates. Maximal degree in co-relation 5159. Up to 5126 conditions per place. [2023-08-29 22:46:15,551 INFO L137 encePairwiseOnDemand]: 779/781 looper letters, 43 selfloop transitions, 1 changer transitions 0/44 dead transitions. [2023-08-29 22:46:15,552 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 44 transitions, 192 flow [2023-08-29 22:46:15,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 22:46:15,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 22:46:15,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1040 transitions. [2023-08-29 22:46:15,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44387537345283823 [2023-08-29 22:46:15,555 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1040 transitions. [2023-08-29 22:46:15,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1040 transitions. [2023-08-29 22:46:15,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:46:15,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1040 transitions. [2023-08-29 22:46:15,559 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 346.6666666666667) internal successors, (1040), 3 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:15,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 781.0) internal successors, (3124), 4 states have internal predecessors, (3124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:15,578 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 781.0) internal successors, (3124), 4 states have internal predecessors, (3124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:15,578 INFO L175 Difference]: Start difference. First operand has 47 places, 45 transitions, 106 flow. Second operand 3 states and 1040 transitions. [2023-08-29 22:46:15,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 44 transitions, 192 flow [2023-08-29 22:46:15,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 44 transitions, 190 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 22:46:15,580 INFO L231 Difference]: Finished difference. Result has 47 places, 44 transitions, 104 flow [2023-08-29 22:46:15,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=47, PETRI_TRANSITIONS=44} [2023-08-29 22:46:15,581 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -4 predicate places. [2023-08-29 22:46:15,582 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 44 transitions, 104 flow [2023-08-29 22:46:15,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 332.6666666666667) internal successors, (998), 3 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:15,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:46:15,584 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-29 22:46:15,598 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-08-29 22:46:15,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:46:15,793 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-29 22:46:15,794 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:46:15,794 INFO L85 PathProgramCache]: Analyzing trace with hash 47387, now seen corresponding path program 1 times [2023-08-29 22:46:15,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 22:46:15,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [271353162] [2023-08-29 22:46:15,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:46:15,795 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:46:15,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 22:46:15,796 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 22:46:15,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-08-29 22:46:15,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:46:15,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-29 22:46:15,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:46:15,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:46:15,869 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 22:46:15,870 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 22:46:15,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [271353162] [2023-08-29 22:46:15,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [271353162] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:46:15,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:46:15,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 22:46:15,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239188707] [2023-08-29 22:46:15,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:46:15,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 22:46:15,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 22:46:15,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 22:46:15,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 22:46:15,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 335 out of 781 [2023-08-29 22:46:15,904 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 44 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 335.6666666666667) internal successors, (1007), 3 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:15,904 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:46:15,904 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 335 of 781 [2023-08-29 22:46:15,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:46:16,357 INFO L130 PetriNetUnfolder]: 1817/2565 cut-off events. [2023-08-29 22:46:16,357 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2023-08-29 22:46:16,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5170 conditions, 2565 events. 1817/2565 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 10289 event pairs, 1428 based on Foata normal form. 1/1029 useless extension candidates. Maximal degree in co-relation 5162. Up to 2565 conditions per place. [2023-08-29 22:46:16,374 INFO L137 encePairwiseOnDemand]: 776/781 looper letters, 42 selfloop transitions, 2 changer transitions 0/44 dead transitions. [2023-08-29 22:46:16,375 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 44 transitions, 192 flow [2023-08-29 22:46:16,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 22:46:16,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 22:46:16,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1052 transitions. [2023-08-29 22:46:16,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44899701237729406 [2023-08-29 22:46:16,378 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1052 transitions. [2023-08-29 22:46:16,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1052 transitions. [2023-08-29 22:46:16,379 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:46:16,379 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1052 transitions. [2023-08-29 22:46:16,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 350.6666666666667) internal successors, (1052), 3 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:16,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 781.0) internal successors, (3124), 4 states have internal predecessors, (3124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:16,387 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 781.0) internal successors, (3124), 4 states have internal predecessors, (3124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:16,387 INFO L175 Difference]: Start difference. First operand has 47 places, 44 transitions, 104 flow. Second operand 3 states and 1052 transitions. [2023-08-29 22:46:16,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 44 transitions, 192 flow [2023-08-29 22:46:16,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 44 transitions, 189 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-29 22:46:16,389 INFO L231 Difference]: Finished difference. Result has 49 places, 44 transitions, 113 flow [2023-08-29 22:46:16,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=113, PETRI_PLACES=49, PETRI_TRANSITIONS=44} [2023-08-29 22:46:16,392 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -2 predicate places. [2023-08-29 22:46:16,394 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 44 transitions, 113 flow [2023-08-29 22:46:16,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 335.6666666666667) internal successors, (1007), 3 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:16,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:46:16,395 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 22:46:16,408 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 (4)] Ended with exit code 0 [2023-08-29 22:46:16,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:46:16,604 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-29 22:46:16,605 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:46:16,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1470721, now seen corresponding path program 1 times [2023-08-29 22:46:16,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 22:46:16,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [519930693] [2023-08-29 22:46:16,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:46:16,606 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:46:16,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 22:46:16,607 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 22:46:16,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-08-29 22:46:16,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:46:16,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-29 22:46:16,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:46:16,696 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:46:16,697 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 22:46:16,726 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:46:16,727 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 22:46:16,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [519930693] [2023-08-29 22:46:16,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [519930693] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 22:46:16,727 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-29 22:46:16,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-08-29 22:46:16,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686740496] [2023-08-29 22:46:16,728 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-29 22:46:16,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 22:46:16,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 22:46:16,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 22:46:16,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-29 22:46:16,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 333 out of 781 [2023-08-29 22:46:16,838 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 44 transitions, 113 flow. Second operand has 6 states, 6 states have (on average 334.0) internal successors, (2004), 6 states have internal predecessors, (2004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:16,838 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:46:16,838 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 333 of 781 [2023-08-29 22:46:16,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:46:17,408 INFO L130 PetriNetUnfolder]: 1818/2569 cut-off events. [2023-08-29 22:46:17,408 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2023-08-29 22:46:17,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5188 conditions, 2569 events. 1818/2569 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 10292 event pairs, 1428 based on Foata normal form. 2/1032 useless extension candidates. Maximal degree in co-relation 5178. Up to 2564 conditions per place. [2023-08-29 22:46:17,424 INFO L137 encePairwiseOnDemand]: 775/781 looper letters, 43 selfloop transitions, 5 changer transitions 0/48 dead transitions. [2023-08-29 22:46:17,424 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 48 transitions, 225 flow [2023-08-29 22:46:17,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 22:46:17,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 22:46:17,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1719 transitions. [2023-08-29 22:46:17,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44020486555697824 [2023-08-29 22:46:17,450 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1719 transitions. [2023-08-29 22:46:17,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1719 transitions. [2023-08-29 22:46:17,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:46:17,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1719 transitions. [2023-08-29 22:46:17,455 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 343.8) internal successors, (1719), 5 states have internal predecessors, (1719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:17,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 781.0) internal successors, (4686), 6 states have internal predecessors, (4686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:17,464 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 781.0) internal successors, (4686), 6 states have internal predecessors, (4686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:17,464 INFO L175 Difference]: Start difference. First operand has 49 places, 44 transitions, 113 flow. Second operand 5 states and 1719 transitions. [2023-08-29 22:46:17,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 48 transitions, 225 flow [2023-08-29 22:46:17,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 48 transitions, 221 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 22:46:17,467 INFO L231 Difference]: Finished difference. Result has 54 places, 47 transitions, 155 flow [2023-08-29 22:46:17,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=155, PETRI_PLACES=54, PETRI_TRANSITIONS=47} [2023-08-29 22:46:17,469 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 3 predicate places. [2023-08-29 22:46:17,469 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 47 transitions, 155 flow [2023-08-29 22:46:17,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 334.0) internal successors, (2004), 6 states have internal predecessors, (2004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:17,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:46:17,471 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 22:46:17,483 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-08-29 22:46:17,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:46:17,680 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-29 22:46:17,680 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:46:17,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1470611, now seen corresponding path program 1 times [2023-08-29 22:46:17,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 22:46:17,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [516974314] [2023-08-29 22:46:17,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:46:17,681 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:46:17,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 22:46:17,682 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 22:46:17,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-08-29 22:46:17,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:46:17,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-29 22:46:17,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:46:17,842 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2023-08-29 22:46:17,842 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 42 [2023-08-29 22:46:17,877 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:46:17,878 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 22:46:17,963 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:46:17,963 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 22:46:17,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [516974314] [2023-08-29 22:46:17,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [516974314] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 22:46:17,963 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-29 22:46:17,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-08-29 22:46:17,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594778164] [2023-08-29 22:46:17,964 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-29 22:46:17,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 22:46:17,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 22:46:17,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 22:46:17,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-29 22:46:18,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 329 out of 781 [2023-08-29 22:46:18,718 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 47 transitions, 155 flow. Second operand has 6 states, 6 states have (on average 330.0) internal successors, (1980), 6 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:18,719 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:46:18,719 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 329 of 781 [2023-08-29 22:46:18,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:46:19,450 INFO L130 PetriNetUnfolder]: 1817/2567 cut-off events. [2023-08-29 22:46:19,450 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-08-29 22:46:19,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5198 conditions, 2567 events. 1817/2567 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 10276 event pairs, 1428 based on Foata normal form. 2/1033 useless extension candidates. Maximal degree in co-relation 5185. Up to 2565 conditions per place. [2023-08-29 22:46:19,464 INFO L137 encePairwiseOnDemand]: 778/781 looper letters, 42 selfloop transitions, 4 changer transitions 0/46 dead transitions. [2023-08-29 22:46:19,465 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 46 transitions, 241 flow [2023-08-29 22:46:19,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 22:46:19,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 22:46:19,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1693 transitions. [2023-08-29 22:46:19,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43354673495518564 [2023-08-29 22:46:19,470 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1693 transitions. [2023-08-29 22:46:19,470 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1693 transitions. [2023-08-29 22:46:19,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:46:19,472 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1693 transitions. [2023-08-29 22:46:19,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 338.6) internal successors, (1693), 5 states have internal predecessors, (1693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:19,482 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 781.0) internal successors, (4686), 6 states have internal predecessors, (4686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:19,484 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 781.0) internal successors, (4686), 6 states have internal predecessors, (4686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:19,484 INFO L175 Difference]: Start difference. First operand has 54 places, 47 transitions, 155 flow. Second operand 5 states and 1693 transitions. [2023-08-29 22:46:19,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 46 transitions, 241 flow [2023-08-29 22:46:19,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 46 transitions, 224 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-08-29 22:46:19,486 INFO L231 Difference]: Finished difference. Result has 55 places, 46 transitions, 140 flow [2023-08-29 22:46:19,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=140, PETRI_PLACES=55, PETRI_TRANSITIONS=46} [2023-08-29 22:46:19,487 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 4 predicate places. [2023-08-29 22:46:19,487 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 46 transitions, 140 flow [2023-08-29 22:46:19,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 330.0) internal successors, (1980), 6 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:19,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:46:19,488 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1] [2023-08-29 22:46:19,500 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-08-29 22:46:19,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:46:19,697 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-29 22:46:19,698 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:46:19,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1413418049, now seen corresponding path program 2 times [2023-08-29 22:46:19,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 22:46:19,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [240663036] [2023-08-29 22:46:19,698 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 22:46:19,698 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:46:19,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 22:46:19,700 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 22:46:19,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-08-29 22:46:19,770 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-29 22:46:19,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 22:46:19,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-29 22:46:19,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:46:19,823 INFO L321 Elim1Store]: treesize reduction 111, result has 19.0 percent of original size [2023-08-29 22:46:19,823 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 51 [2023-08-29 22:46:19,917 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-29 22:46:19,917 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 22:46:19,918 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 22:46:19,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [240663036] [2023-08-29 22:46:19,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [240663036] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:46:19,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:46:19,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 22:46:19,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903772527] [2023-08-29 22:46:19,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:46:19,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 22:46:19,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 22:46:19,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 22:46:19,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 22:46:20,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 332 out of 781 [2023-08-29 22:46:20,074 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 46 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 333.0) internal successors, (999), 3 states have internal predecessors, (999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:20,074 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:46:20,074 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 332 of 781 [2023-08-29 22:46:20,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:46:20,503 INFO L130 PetriNetUnfolder]: 1442/2066 cut-off events. [2023-08-29 22:46:20,503 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-29 22:46:20,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4188 conditions, 2066 events. 1442/2066 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 8082 event pairs, 1128 based on Foata normal form. 0/881 useless extension candidates. Maximal degree in co-relation 4176. Up to 2066 conditions per place. [2023-08-29 22:46:20,513 INFO L137 encePairwiseOnDemand]: 778/781 looper letters, 43 selfloop transitions, 1 changer transitions 0/44 dead transitions. [2023-08-29 22:46:20,514 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 44 transitions, 218 flow [2023-08-29 22:46:20,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 22:46:20,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 22:46:20,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1039 transitions. [2023-08-29 22:46:20,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4434485702091336 [2023-08-29 22:46:20,520 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1039 transitions. [2023-08-29 22:46:20,521 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1039 transitions. [2023-08-29 22:46:20,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:46:20,521 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1039 transitions. [2023-08-29 22:46:20,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 346.3333333333333) internal successors, (1039), 3 states have internal predecessors, (1039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:20,526 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 781.0) internal successors, (3124), 4 states have internal predecessors, (3124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:20,527 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 781.0) internal successors, (3124), 4 states have internal predecessors, (3124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:20,527 INFO L175 Difference]: Start difference. First operand has 55 places, 46 transitions, 140 flow. Second operand 3 states and 1039 transitions. [2023-08-29 22:46:20,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 44 transitions, 218 flow [2023-08-29 22:46:20,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 44 transitions, 207 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-08-29 22:46:20,531 INFO L231 Difference]: Finished difference. Result has 51 places, 44 transitions, 121 flow [2023-08-29 22:46:20,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=121, PETRI_PLACES=51, PETRI_TRANSITIONS=44} [2023-08-29 22:46:20,534 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 0 predicate places. [2023-08-29 22:46:20,534 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 121 flow [2023-08-29 22:46:20,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 333.0) internal successors, (999), 3 states have internal predecessors, (999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:20,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:46:20,535 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1] [2023-08-29 22:46:20,545 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-08-29 22:46:20,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:46:20,744 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-29 22:46:20,744 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:46:20,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1413418051, now seen corresponding path program 1 times [2023-08-29 22:46:20,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 22:46:20,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1480419950] [2023-08-29 22:46:20,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:46:20,745 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:46:20,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 22:46:20,746 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 22:46:20,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-08-29 22:46:20,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:46:20,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-29 22:46:20,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:46:20,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 22:46:20,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 22:46:20,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 22:46:20,925 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2023-08-29 22:46:20,926 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 33 [2023-08-29 22:46:20,944 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2023-08-29 22:46:20,945 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2023-08-29 22:46:21,026 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-29 22:46:21,026 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 22:46:21,026 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 22:46:21,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1480419950] [2023-08-29 22:46:21,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1480419950] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:46:21,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:46:21,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 22:46:21,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981324458] [2023-08-29 22:46:21,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:46:21,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 22:46:21,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 22:46:21,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 22:46:21,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 22:46:21,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 331 out of 781 [2023-08-29 22:46:21,177 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 121 flow. Second operand has 3 states, 3 states have (on average 332.0) internal successors, (996), 3 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:21,177 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:46:21,177 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 331 of 781 [2023-08-29 22:46:21,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:46:21,511 INFO L130 PetriNetUnfolder]: 1067/1565 cut-off events. [2023-08-29 22:46:21,512 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-08-29 22:46:21,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3178 conditions, 1565 events. 1067/1565 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 5921 event pairs, 828 based on Foata normal form. 0/731 useless extension candidates. Maximal degree in co-relation 3166. Up to 1565 conditions per place. [2023-08-29 22:46:21,517 INFO L137 encePairwiseOnDemand]: 778/781 looper letters, 41 selfloop transitions, 1 changer transitions 0/42 dead transitions. [2023-08-29 22:46:21,518 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 42 transitions, 195 flow [2023-08-29 22:46:21,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 22:46:21,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 22:46:21,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1034 transitions. [2023-08-29 22:46:21,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4413145539906103 [2023-08-29 22:46:21,521 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1034 transitions. [2023-08-29 22:46:21,521 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1034 transitions. [2023-08-29 22:46:21,522 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:46:21,522 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1034 transitions. [2023-08-29 22:46:21,524 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 344.6666666666667) internal successors, (1034), 3 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:21,527 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 781.0) internal successors, (3124), 4 states have internal predecessors, (3124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:21,528 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 781.0) internal successors, (3124), 4 states have internal predecessors, (3124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:21,528 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 121 flow. Second operand 3 states and 1034 transitions. [2023-08-29 22:46:21,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 42 transitions, 195 flow [2023-08-29 22:46:21,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 42 transitions, 194 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 22:46:21,530 INFO L231 Difference]: Finished difference. Result has 50 places, 42 transitions, 112 flow [2023-08-29 22:46:21,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=50, PETRI_TRANSITIONS=42} [2023-08-29 22:46:21,530 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -1 predicate places. [2023-08-29 22:46:21,531 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 42 transitions, 112 flow [2023-08-29 22:46:21,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 332.0) internal successors, (996), 3 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:21,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:46:21,531 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1] [2023-08-29 22:46:21,547 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-08-29 22:46:21,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:46:21,741 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-29 22:46:21,741 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:46:21,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1413417939, now seen corresponding path program 2 times [2023-08-29 22:46:21,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 22:46:21,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [105134131] [2023-08-29 22:46:21,742 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 22:46:21,742 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:46:21,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 22:46:21,744 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 22:46:21,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-08-29 22:46:21,823 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-29 22:46:21,824 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 22:46:21,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-29 22:46:21,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:46:21,868 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:46:21,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 22:46:21,957 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 22:46:21,958 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 22:46:21,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [105134131] [2023-08-29 22:46:21,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [105134131] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 22:46:21,958 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-29 22:46:21,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2023-08-29 22:46:21,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413442643] [2023-08-29 22:46:21,959 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-29 22:46:21,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-29 22:46:21,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 22:46:21,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-29 22:46:21,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-08-29 22:46:22,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 333 out of 781 [2023-08-29 22:46:22,215 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 42 transitions, 112 flow. Second operand has 10 states, 10 states have (on average 334.0) internal successors, (3340), 10 states have internal predecessors, (3340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:22,215 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:46:22,215 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 333 of 781 [2023-08-29 22:46:22,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:46:22,579 INFO L130 PetriNetUnfolder]: 1066/1563 cut-off events. [2023-08-29 22:46:22,579 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-08-29 22:46:22,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3174 conditions, 1563 events. 1066/1563 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 5900 event pairs, 828 based on Foata normal form. 2/731 useless extension candidates. Maximal degree in co-relation 3161. Up to 1560 conditions per place. [2023-08-29 22:46:22,586 INFO L137 encePairwiseOnDemand]: 778/781 looper letters, 36 selfloop transitions, 4 changer transitions 0/40 dead transitions. [2023-08-29 22:46:22,586 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 40 transitions, 184 flow [2023-08-29 22:46:22,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 22:46:22,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 22:46:22,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2040 transitions. [2023-08-29 22:46:22,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4353393085787452 [2023-08-29 22:46:22,592 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2040 transitions. [2023-08-29 22:46:22,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2040 transitions. [2023-08-29 22:46:22,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:46:22,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2040 transitions. [2023-08-29 22:46:22,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:22,603 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 781.0) internal successors, (5467), 7 states have internal predecessors, (5467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:22,604 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 781.0) internal successors, (5467), 7 states have internal predecessors, (5467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:22,604 INFO L175 Difference]: Start difference. First operand has 50 places, 42 transitions, 112 flow. Second operand 6 states and 2040 transitions. [2023-08-29 22:46:22,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 40 transitions, 184 flow [2023-08-29 22:46:22,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 40 transitions, 181 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 22:46:22,605 INFO L231 Difference]: Finished difference. Result has 52 places, 40 transitions, 109 flow [2023-08-29 22:46:22,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=109, PETRI_PLACES=52, PETRI_TRANSITIONS=40} [2023-08-29 22:46:22,606 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 1 predicate places. [2023-08-29 22:46:22,606 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 40 transitions, 109 flow [2023-08-29 22:46:22,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 334.0) internal successors, (3340), 10 states have internal predecessors, (3340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:22,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:46:22,608 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1] [2023-08-29 22:46:22,625 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-08-29 22:46:22,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:46:22,818 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-29 22:46:22,818 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:46:22,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1085113836, now seen corresponding path program 1 times [2023-08-29 22:46:22,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 22:46:22,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [975960544] [2023-08-29 22:46:22,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:46:22,819 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:46:22,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 22:46:22,822 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 22:46:22,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-08-29 22:46:22,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:46:22,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-29 22:46:22,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:46:22,977 INFO L321 Elim1Store]: treesize reduction 105, result has 17.3 percent of original size [2023-08-29 22:46:22,978 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 29 treesize of output 40 [2023-08-29 22:46:23,111 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-29 22:46:23,111 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 22:46:23,112 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 22:46:23,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [975960544] [2023-08-29 22:46:23,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [975960544] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:46:23,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:46:23,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 22:46:23,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871379761] [2023-08-29 22:46:23,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:46:23,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 22:46:23,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 22:46:23,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 22:46:23,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 22:46:23,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 332 out of 781 [2023-08-29 22:46:23,227 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 40 transitions, 109 flow. Second operand has 3 states, 3 states have (on average 333.6666666666667) internal successors, (1001), 3 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:23,227 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:46:23,227 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 332 of 781 [2023-08-29 22:46:23,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:46:23,537 INFO L130 PetriNetUnfolder]: 1011/1478 cut-off events. [2023-08-29 22:46:23,538 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-08-29 22:46:23,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3006 conditions, 1478 events. 1011/1478 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 5532 event pairs, 784 based on Foata normal form. 0/707 useless extension candidates. Maximal degree in co-relation 2993. Up to 1478 conditions per place. [2023-08-29 22:46:23,543 INFO L137 encePairwiseOnDemand]: 778/781 looper letters, 37 selfloop transitions, 1 changer transitions 0/38 dead transitions. [2023-08-29 22:46:23,543 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 38 transitions, 181 flow [2023-08-29 22:46:23,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 22:46:23,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 22:46:23,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1034 transitions. [2023-08-29 22:46:23,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4413145539906103 [2023-08-29 22:46:23,552 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1034 transitions. [2023-08-29 22:46:23,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1034 transitions. [2023-08-29 22:46:23,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:46:23,553 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1034 transitions. [2023-08-29 22:46:23,555 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 344.6666666666667) internal successors, (1034), 3 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:23,560 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 781.0) internal successors, (3124), 4 states have internal predecessors, (3124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:23,561 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 781.0) internal successors, (3124), 4 states have internal predecessors, (3124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:23,561 INFO L175 Difference]: Start difference. First operand has 52 places, 40 transitions, 109 flow. Second operand 3 states and 1034 transitions. [2023-08-29 22:46:23,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 38 transitions, 181 flow [2023-08-29 22:46:23,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 38 transitions, 174 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-29 22:46:23,562 INFO L231 Difference]: Finished difference. Result has 48 places, 38 transitions, 100 flow [2023-08-29 22:46:23,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=48, PETRI_TRANSITIONS=38} [2023-08-29 22:46:23,563 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -3 predicate places. [2023-08-29 22:46:23,563 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 38 transitions, 100 flow [2023-08-29 22:46:23,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 333.6666666666667) internal successors, (1001), 3 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:23,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:46:23,564 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1] [2023-08-29 22:46:23,576 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 (10)] Forceful destruction successful, exit code 0 [2023-08-29 22:46:23,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:46:23,776 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-29 22:46:23,776 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:46:23,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1085113837, now seen corresponding path program 1 times [2023-08-29 22:46:23,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 22:46:23,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1931507846] [2023-08-29 22:46:23,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:46:23,777 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:46:23,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 22:46:23,778 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 22:46:23,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-08-29 22:46:23,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:46:23,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-29 22:46:23,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:46:23,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 22:46:23,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 22:46:23,955 INFO L321 Elim1Store]: treesize reduction 43, result has 41.9 percent of original size [2023-08-29 22:46:23,955 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 36 [2023-08-29 22:46:23,965 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2023-08-29 22:46:24,064 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-29 22:46:24,064 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 22:46:24,064 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 22:46:24,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1931507846] [2023-08-29 22:46:24,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1931507846] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:46:24,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:46:24,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 22:46:24,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747292653] [2023-08-29 22:46:24,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:46:24,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 22:46:24,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 22:46:24,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 22:46:24,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 22:46:24,193 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 331 out of 781 [2023-08-29 22:46:24,194 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 38 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 332.6666666666667) internal successors, (998), 3 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:24,194 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:46:24,194 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 331 of 781 [2023-08-29 22:46:24,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:46:24,413 INFO L130 PetriNetUnfolder]: 956/1393 cut-off events. [2023-08-29 22:46:24,413 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-08-29 22:46:24,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2834 conditions, 1393 events. 956/1393 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 5146 event pairs, 740 based on Foata normal form. 0/685 useless extension candidates. Maximal degree in co-relation 2821. Up to 1393 conditions per place. [2023-08-29 22:46:24,419 INFO L137 encePairwiseOnDemand]: 778/781 looper letters, 35 selfloop transitions, 1 changer transitions 0/36 dead transitions. [2023-08-29 22:46:24,420 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 36 transitions, 168 flow [2023-08-29 22:46:24,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 22:46:24,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 22:46:24,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1029 transitions. [2023-08-29 22:46:24,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43918053777208704 [2023-08-29 22:46:24,424 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1029 transitions. [2023-08-29 22:46:24,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1029 transitions. [2023-08-29 22:46:24,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:46:24,424 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1029 transitions. [2023-08-29 22:46:24,426 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 343.0) internal successors, (1029), 3 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:24,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 781.0) internal successors, (3124), 4 states have internal predecessors, (3124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:24,430 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 781.0) internal successors, (3124), 4 states have internal predecessors, (3124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:24,430 INFO L175 Difference]: Start difference. First operand has 48 places, 38 transitions, 100 flow. Second operand 3 states and 1029 transitions. [2023-08-29 22:46:24,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 36 transitions, 168 flow [2023-08-29 22:46:24,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 36 transitions, 167 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 22:46:24,431 INFO L231 Difference]: Finished difference. Result has 47 places, 36 transitions, 97 flow [2023-08-29 22:46:24,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=97, PETRI_PLACES=47, PETRI_TRANSITIONS=36} [2023-08-29 22:46:24,432 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -4 predicate places. [2023-08-29 22:46:24,432 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 36 transitions, 97 flow [2023-08-29 22:46:24,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 332.6666666666667) internal successors, (998), 3 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:24,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:46:24,433 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1] [2023-08-29 22:46:24,442 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2023-08-29 22:46:24,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:46:24,642 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-29 22:46:24,642 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:46:24,642 INFO L85 PathProgramCache]: Analyzing trace with hash -721211347, now seen corresponding path program 1 times [2023-08-29 22:46:24,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 22:46:24,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [736606504] [2023-08-29 22:46:24,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:46:24,643 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:46:24,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 22:46:24,644 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 22:46:24,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-08-29 22:46:24,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:46:24,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-29 22:46:24,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:46:24,822 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2023-08-29 22:46:24,822 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 42 [2023-08-29 22:46:24,879 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-29 22:46:24,879 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 22:46:24,879 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 22:46:24,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [736606504] [2023-08-29 22:46:24,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [736606504] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:46:24,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:46:24,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 22:46:24,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487149579] [2023-08-29 22:46:24,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:46:24,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 22:46:24,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 22:46:24,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 22:46:24,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-29 22:46:25,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 326 out of 781 [2023-08-29 22:46:25,124 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 36 transitions, 97 flow. Second operand has 5 states, 5 states have (on average 327.2) internal successors, (1636), 5 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:25,124 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:46:25,124 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 326 of 781 [2023-08-29 22:46:25,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:46:25,646 INFO L130 PetriNetUnfolder]: 1577/2302 cut-off events. [2023-08-29 22:46:25,647 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-08-29 22:46:25,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4671 conditions, 2302 events. 1577/2302 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 10264 event pairs, 740 based on Foata normal form. 0/1122 useless extension candidates. Maximal degree in co-relation 4657. Up to 1389 conditions per place. [2023-08-29 22:46:25,658 INFO L137 encePairwiseOnDemand]: 776/781 looper letters, 60 selfloop transitions, 4 changer transitions 0/64 dead transitions. [2023-08-29 22:46:25,658 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 64 transitions, 286 flow [2023-08-29 22:46:25,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 22:46:25,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 22:46:25,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1693 transitions. [2023-08-29 22:46:25,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43354673495518564 [2023-08-29 22:46:25,663 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1693 transitions. [2023-08-29 22:46:25,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1693 transitions. [2023-08-29 22:46:25,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:46:25,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1693 transitions. [2023-08-29 22:46:25,668 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 338.6) internal successors, (1693), 5 states have internal predecessors, (1693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:25,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 781.0) internal successors, (4686), 6 states have internal predecessors, (4686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:25,675 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 781.0) internal successors, (4686), 6 states have internal predecessors, (4686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:25,675 INFO L175 Difference]: Start difference. First operand has 47 places, 36 transitions, 97 flow. Second operand 5 states and 1693 transitions. [2023-08-29 22:46:25,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 64 transitions, 286 flow [2023-08-29 22:46:25,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 64 transitions, 285 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 22:46:25,677 INFO L231 Difference]: Finished difference. Result has 51 places, 37 transitions, 112 flow [2023-08-29 22:46:25,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=112, PETRI_PLACES=51, PETRI_TRANSITIONS=37} [2023-08-29 22:46:25,678 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 0 predicate places. [2023-08-29 22:46:25,678 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 37 transitions, 112 flow [2023-08-29 22:46:25,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 327.2) internal successors, (1636), 5 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:25,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:46:25,682 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1] [2023-08-29 22:46:25,693 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-08-29 22:46:25,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:46:25,891 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-29 22:46:25,892 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:46:25,892 INFO L85 PathProgramCache]: Analyzing trace with hash -721211349, now seen corresponding path program 1 times [2023-08-29 22:46:25,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 22:46:25,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1713848690] [2023-08-29 22:46:25,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:46:25,893 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:46:25,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 22:46:25,894 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 22:46:25,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-08-29 22:46:25,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:46:25,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-29 22:46:25,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:46:26,032 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2023-08-29 22:46:26,033 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 50 [2023-08-29 22:46:26,060 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-29 22:46:26,060 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 22:46:26,061 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 22:46:26,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1713848690] [2023-08-29 22:46:26,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1713848690] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:46:26,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:46:26,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 22:46:26,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122314868] [2023-08-29 22:46:26,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:46:26,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 22:46:26,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 22:46:26,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 22:46:26,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-29 22:46:26,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 781 [2023-08-29 22:46:26,227 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 37 transitions, 112 flow. Second operand has 4 states, 4 states have (on average 325.5) internal successors, (1302), 4 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:26,227 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:46:26,227 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 781 [2023-08-29 22:46:26,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:46:26,440 INFO L130 PetriNetUnfolder]: 845/1250 cut-off events. [2023-08-29 22:46:26,441 INFO L131 PetriNetUnfolder]: For 265/265 co-relation queries the response was YES. [2023-08-29 22:46:26,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2802 conditions, 1250 events. 845/1250 cut-off events. For 265/265 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4511 event pairs, 635 based on Foata normal form. 0/816 useless extension candidates. Maximal degree in co-relation 2786. Up to 1246 conditions per place. [2023-08-29 22:46:26,446 INFO L137 encePairwiseOnDemand]: 776/781 looper letters, 32 selfloop transitions, 2 changer transitions 0/34 dead transitions. [2023-08-29 22:46:26,446 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 34 transitions, 174 flow [2023-08-29 22:46:26,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 22:46:26,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 22:46:26,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1330 transitions. [2023-08-29 22:46:26,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42573623559539053 [2023-08-29 22:46:26,451 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1330 transitions. [2023-08-29 22:46:26,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1330 transitions. [2023-08-29 22:46:26,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:46:26,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1330 transitions. [2023-08-29 22:46:26,454 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 332.5) internal successors, (1330), 4 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:26,458 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 781.0) internal successors, (3905), 5 states have internal predecessors, (3905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:26,458 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 781.0) internal successors, (3905), 5 states have internal predecessors, (3905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:26,459 INFO L175 Difference]: Start difference. First operand has 51 places, 37 transitions, 112 flow. Second operand 4 states and 1330 transitions. [2023-08-29 22:46:26,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 34 transitions, 174 flow [2023-08-29 22:46:26,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 34 transitions, 168 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-29 22:46:26,460 INFO L231 Difference]: Finished difference. Result has 48 places, 34 transitions, 104 flow [2023-08-29 22:46:26,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=104, PETRI_PLACES=48, PETRI_TRANSITIONS=34} [2023-08-29 22:46:26,461 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -3 predicate places. [2023-08-29 22:46:26,461 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 34 transitions, 104 flow [2023-08-29 22:46:26,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 325.5) internal successors, (1302), 4 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:26,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:46:26,462 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2023-08-29 22:46:26,471 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-08-29 22:46:26,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:46:26,671 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-29 22:46:26,672 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:46:26,672 INFO L85 PathProgramCache]: Analyzing trace with hash -882624075, now seen corresponding path program 1 times [2023-08-29 22:46:26,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 22:46:26,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1716686652] [2023-08-29 22:46:26,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:46:26,672 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:46:26,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 22:46:26,673 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 22:46:26,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-08-29 22:46:26,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:46:26,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-29 22:46:26,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:46:26,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 22:46:26,850 INFO L321 Elim1Store]: treesize reduction 62, result has 31.1 percent of original size [2023-08-29 22:46:26,851 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 38 [2023-08-29 22:46:26,883 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 342 treesize of output 334 [2023-08-29 22:46:26,951 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-29 22:46:26,951 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 22:46:26,952 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 22:46:26,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1716686652] [2023-08-29 22:46:26,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1716686652] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:46:26,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:46:26,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 22:46:26,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294211176] [2023-08-29 22:46:26,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:46:26,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 22:46:26,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 22:46:26,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 22:46:26,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 22:46:27,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 333 out of 781 [2023-08-29 22:46:27,070 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 34 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 335.3333333333333) internal successors, (1006), 3 states have internal predecessors, (1006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:27,070 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:46:27,070 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 333 of 781 [2023-08-29 22:46:27,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:46:27,259 INFO L130 PetriNetUnfolder]: 789/1162 cut-off events. [2023-08-29 22:46:27,259 INFO L131 PetriNetUnfolder]: For 154/154 co-relation queries the response was YES. [2023-08-29 22:46:27,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2560 conditions, 1162 events. 789/1162 cut-off events. For 154/154 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4098 event pairs, 591 based on Foata normal form. 0/780 useless extension candidates. Maximal degree in co-relation 2544. Up to 1162 conditions per place. [2023-08-29 22:46:27,263 INFO L137 encePairwiseOnDemand]: 778/781 looper letters, 31 selfloop transitions, 1 changer transitions 0/32 dead transitions. [2023-08-29 22:46:27,263 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 32 transitions, 164 flow [2023-08-29 22:46:27,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 22:46:27,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 22:46:27,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1030 transitions. [2023-08-29 22:46:27,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43960734101579174 [2023-08-29 22:46:27,266 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1030 transitions. [2023-08-29 22:46:27,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1030 transitions. [2023-08-29 22:46:27,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:46:27,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1030 transitions. [2023-08-29 22:46:27,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 343.3333333333333) internal successors, (1030), 3 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:27,272 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 781.0) internal successors, (3124), 4 states have internal predecessors, (3124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:27,272 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 781.0) internal successors, (3124), 4 states have internal predecessors, (3124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:27,272 INFO L175 Difference]: Start difference. First operand has 48 places, 34 transitions, 104 flow. Second operand 3 states and 1030 transitions. [2023-08-29 22:46:27,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 32 transitions, 164 flow [2023-08-29 22:46:27,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 32 transitions, 161 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 22:46:27,274 INFO L231 Difference]: Finished difference. Result has 46 places, 32 transitions, 99 flow [2023-08-29 22:46:27,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=99, PETRI_PLACES=46, PETRI_TRANSITIONS=32} [2023-08-29 22:46:27,274 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -5 predicate places. [2023-08-29 22:46:27,274 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 32 transitions, 99 flow [2023-08-29 22:46:27,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 335.3333333333333) internal successors, (1006), 3 states have internal predecessors, (1006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:27,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:46:27,275 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2023-08-29 22:46:27,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-08-29 22:46:27,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:46:27,492 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-29 22:46:27,492 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:46:27,492 INFO L85 PathProgramCache]: Analyzing trace with hash -882624074, now seen corresponding path program 1 times [2023-08-29 22:46:27,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 22:46:27,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [132943911] [2023-08-29 22:46:27,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:46:27,492 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:46:27,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 22:46:27,494 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 22:46:27,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-08-29 22:46:27,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:46:27,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-29 22:46:27,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:46:27,661 INFO L321 Elim1Store]: treesize reduction 105, result has 17.3 percent of original size [2023-08-29 22:46:27,662 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 29 [2023-08-29 22:46:27,687 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-29 22:46:27,687 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 22:46:27,687 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 22:46:27,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [132943911] [2023-08-29 22:46:27,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [132943911] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:46:27,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:46:27,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 22:46:27,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439248706] [2023-08-29 22:46:27,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:46:27,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 22:46:27,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 22:46:27,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 22:46:27,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 22:46:27,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 329 out of 781 [2023-08-29 22:46:27,769 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 32 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 331.3333333333333) internal successors, (994), 3 states have internal predecessors, (994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:27,769 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:46:27,769 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 329 of 781 [2023-08-29 22:46:27,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:46:27,926 INFO L130 PetriNetUnfolder]: 733/1074 cut-off events. [2023-08-29 22:46:27,926 INFO L131 PetriNetUnfolder]: For 139/139 co-relation queries the response was YES. [2023-08-29 22:46:27,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2368 conditions, 1074 events. 733/1074 cut-off events. For 139/139 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3721 event pairs, 547 based on Foata normal form. 0/744 useless extension candidates. Maximal degree in co-relation 2352. Up to 1074 conditions per place. [2023-08-29 22:46:27,930 INFO L137 encePairwiseOnDemand]: 778/781 looper letters, 29 selfloop transitions, 1 changer transitions 0/30 dead transitions. [2023-08-29 22:46:27,930 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 30 transitions, 155 flow [2023-08-29 22:46:27,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 22:46:27,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 22:46:27,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1016 transitions. [2023-08-29 22:46:27,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43363209560392657 [2023-08-29 22:46:27,932 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1016 transitions. [2023-08-29 22:46:27,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1016 transitions. [2023-08-29 22:46:27,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:46:27,933 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1016 transitions. [2023-08-29 22:46:27,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 338.6666666666667) internal successors, (1016), 3 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:27,938 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 781.0) internal successors, (3124), 4 states have internal predecessors, (3124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:27,938 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 781.0) internal successors, (3124), 4 states have internal predecessors, (3124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:27,938 INFO L175 Difference]: Start difference. First operand has 46 places, 32 transitions, 99 flow. Second operand 3 states and 1016 transitions. [2023-08-29 22:46:27,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 30 transitions, 155 flow [2023-08-29 22:46:27,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 30 transitions, 154 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 22:46:27,939 INFO L231 Difference]: Finished difference. Result has 45 places, 30 transitions, 96 flow [2023-08-29 22:46:27,940 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=45, PETRI_TRANSITIONS=30} [2023-08-29 22:46:27,940 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -6 predicate places. [2023-08-29 22:46:27,940 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 30 transitions, 96 flow [2023-08-29 22:46:27,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 331.3333333333333) internal successors, (994), 3 states have internal predecessors, (994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:27,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:46:27,941 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2023-08-29 22:46:27,951 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-08-29 22:46:28,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:46:28,151 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-29 22:46:28,151 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:46:28,151 INFO L85 PathProgramCache]: Analyzing trace with hash -882713886, now seen corresponding path program 1 times [2023-08-29 22:46:28,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 22:46:28,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [168740057] [2023-08-29 22:46:28,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:46:28,152 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:46:28,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 22:46:28,153 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 22:46:28,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-08-29 22:46:28,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:46:28,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-29 22:46:28,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:46:28,329 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2023-08-29 22:46:28,329 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 42 [2023-08-29 22:46:28,391 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-29 22:46:28,391 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 22:46:28,584 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-29 22:46:28,585 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 22:46:28,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [168740057] [2023-08-29 22:46:28,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [168740057] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 22:46:28,585 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-29 22:46:28,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2023-08-29 22:46:28,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316161017] [2023-08-29 22:46:28,585 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-29 22:46:28,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-29 22:46:28,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 22:46:28,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-29 22:46:28,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-08-29 22:46:30,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 781 [2023-08-29 22:46:30,194 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 30 transitions, 96 flow. Second operand has 10 states, 10 states have (on average 326.4) internal successors, (3264), 10 states have internal predecessors, (3264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:30,194 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:46:30,194 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 781 [2023-08-29 22:46:30,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:46:30,871 INFO L130 PetriNetUnfolder]: 1269/1862 cut-off events. [2023-08-29 22:46:30,871 INFO L131 PetriNetUnfolder]: For 92/92 co-relation queries the response was YES. [2023-08-29 22:46:30,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4049 conditions, 1862 events. 1269/1862 cut-off events. For 92/92 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 7925 event pairs, 333 based on Foata normal form. 0/1316 useless extension candidates. Maximal degree in co-relation 4032. Up to 676 conditions per place. [2023-08-29 22:46:30,876 INFO L137 encePairwiseOnDemand]: 776/781 looper letters, 86 selfloop transitions, 6 changer transitions 0/92 dead transitions. [2023-08-29 22:46:30,876 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 92 transitions, 423 flow [2023-08-29 22:46:30,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 22:46:30,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 22:46:30,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2367 transitions. [2023-08-29 22:46:30,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4329614047923907 [2023-08-29 22:46:30,881 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2367 transitions. [2023-08-29 22:46:30,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2367 transitions. [2023-08-29 22:46:30,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:46:30,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2367 transitions. [2023-08-29 22:46:30,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 338.14285714285717) internal successors, (2367), 7 states have internal predecessors, (2367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:30,891 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:30,891 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:30,892 INFO L175 Difference]: Start difference. First operand has 45 places, 30 transitions, 96 flow. Second operand 7 states and 2367 transitions. [2023-08-29 22:46:30,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 92 transitions, 423 flow [2023-08-29 22:46:30,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 92 transitions, 422 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 22:46:30,893 INFO L231 Difference]: Finished difference. Result has 52 places, 32 transitions, 125 flow [2023-08-29 22:46:30,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=125, PETRI_PLACES=52, PETRI_TRANSITIONS=32} [2023-08-29 22:46:30,894 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 1 predicate places. [2023-08-29 22:46:30,894 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 32 transitions, 125 flow [2023-08-29 22:46:30,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 326.4) internal successors, (3264), 10 states have internal predecessors, (3264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:30,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:46:30,895 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:46:30,905 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-08-29 22:46:31,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:46:31,105 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-29 22:46:31,105 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:46:31,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1591542639, now seen corresponding path program 1 times [2023-08-29 22:46:31,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 22:46:31,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1175943811] [2023-08-29 22:46:31,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:46:31,106 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:46:31,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 22:46:31,106 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 22:46:31,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-08-29 22:46:31,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:46:31,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-29 22:46:31,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:46:31,260 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2023-08-29 22:46:31,261 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 42 [2023-08-29 22:46:31,327 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-29 22:46:31,328 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 22:46:31,328 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 22:46:31,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1175943811] [2023-08-29 22:46:31,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1175943811] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:46:31,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:46:31,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 22:46:31,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535140456] [2023-08-29 22:46:31,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:46:31,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 22:46:31,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 22:46:31,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 22:46:31,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-29 22:46:31,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 326 out of 781 [2023-08-29 22:46:31,547 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 32 transitions, 125 flow. Second operand has 5 states, 5 states have (on average 327.6) internal successors, (1638), 5 states have internal predecessors, (1638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:31,547 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:46:31,547 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 326 of 781 [2023-08-29 22:46:31,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:46:31,973 INFO L130 PetriNetUnfolder]: 1909/2806 cut-off events. [2023-08-29 22:46:31,973 INFO L131 PetriNetUnfolder]: For 1638/1638 co-relation queries the response was YES. [2023-08-29 22:46:31,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6639 conditions, 2806 events. 1909/2806 cut-off events. For 1638/1638 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 12570 event pairs, 975 based on Foata normal form. 0/2042 useless extension candidates. Maximal degree in co-relation 6619. Up to 1858 conditions per place. [2023-08-29 22:46:31,983 INFO L137 encePairwiseOnDemand]: 776/781 looper letters, 50 selfloop transitions, 4 changer transitions 0/54 dead transitions. [2023-08-29 22:46:31,983 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 54 transitions, 311 flow [2023-08-29 22:46:31,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 22:46:31,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 22:46:31,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1677 transitions. [2023-08-29 22:46:31,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.429449423815621 [2023-08-29 22:46:31,986 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1677 transitions. [2023-08-29 22:46:31,986 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1677 transitions. [2023-08-29 22:46:31,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:46:31,987 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1677 transitions. [2023-08-29 22:46:31,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 335.4) internal successors, (1677), 5 states have internal predecessors, (1677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:31,993 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 781.0) internal successors, (4686), 6 states have internal predecessors, (4686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:31,993 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 781.0) internal successors, (4686), 6 states have internal predecessors, (4686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:31,993 INFO L175 Difference]: Start difference. First operand has 52 places, 32 transitions, 125 flow. Second operand 5 states and 1677 transitions. [2023-08-29 22:46:31,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 54 transitions, 311 flow [2023-08-29 22:46:31,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 54 transitions, 296 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-08-29 22:46:31,996 INFO L231 Difference]: Finished difference. Result has 54 places, 33 transitions, 132 flow [2023-08-29 22:46:31,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=132, PETRI_PLACES=54, PETRI_TRANSITIONS=33} [2023-08-29 22:46:31,996 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 3 predicate places. [2023-08-29 22:46:31,997 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 33 transitions, 132 flow [2023-08-29 22:46:31,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 327.6) internal successors, (1638), 5 states have internal predecessors, (1638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:31,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:46:31,997 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:46:32,009 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-08-29 22:46:32,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:46:32,207 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-29 22:46:32,208 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:46:32,208 INFO L85 PathProgramCache]: Analyzing trace with hash -2093179504, now seen corresponding path program 1 times [2023-08-29 22:46:32,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 22:46:32,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [450750573] [2023-08-29 22:46:32,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:46:32,208 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:46:32,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 22:46:32,219 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 22:46:32,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-08-29 22:46:32,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:46:32,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-29 22:46:32,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:46:32,392 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2023-08-29 22:46:32,392 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 42 [2023-08-29 22:46:32,477 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-29 22:46:32,478 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 22:46:32,699 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-29 22:46:32,699 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 22:46:32,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [450750573] [2023-08-29 22:46:32,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [450750573] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 22:46:32,699 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-29 22:46:32,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2023-08-29 22:46:32,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296296505] [2023-08-29 22:46:32,699 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-29 22:46:32,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-29 22:46:32,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 22:46:32,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-29 22:46:32,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-08-29 22:46:34,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 781 [2023-08-29 22:46:34,116 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 33 transitions, 132 flow. Second operand has 10 states, 10 states have (on average 326.8) internal successors, (3268), 10 states have internal predecessors, (3268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:34,116 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:46:34,116 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 781 [2023-08-29 22:46:34,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:46:35,062 INFO L130 PetriNetUnfolder]: 3189/4694 cut-off events. [2023-08-29 22:46:35,062 INFO L131 PetriNetUnfolder]: For 2515/2515 co-relation queries the response was YES. [2023-08-29 22:46:35,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11675 conditions, 4694 events. 3189/4694 cut-off events. For 2515/2515 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 23433 event pairs, 975 based on Foata normal form. 0/3938 useless extension candidates. Maximal degree in co-relation 11654. Up to 1858 conditions per place. [2023-08-29 22:46:35,079 INFO L137 encePairwiseOnDemand]: 776/781 looper letters, 92 selfloop transitions, 6 changer transitions 0/98 dead transitions. [2023-08-29 22:46:35,079 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 98 transitions, 546 flow [2023-08-29 22:46:35,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 22:46:35,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 22:46:35,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2361 transitions. [2023-08-29 22:46:35,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318639107371502 [2023-08-29 22:46:35,084 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2361 transitions. [2023-08-29 22:46:35,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2361 transitions. [2023-08-29 22:46:35,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:46:35,086 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2361 transitions. [2023-08-29 22:46:35,089 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 337.2857142857143) internal successors, (2361), 7 states have internal predecessors, (2361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:35,094 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:35,094 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:35,094 INFO L175 Difference]: Start difference. First operand has 54 places, 33 transitions, 132 flow. Second operand 7 states and 2361 transitions. [2023-08-29 22:46:35,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 98 transitions, 546 flow [2023-08-29 22:46:35,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 98 transitions, 540 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-29 22:46:35,097 INFO L231 Difference]: Finished difference. Result has 59 places, 35 transitions, 156 flow [2023-08-29 22:46:35,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=156, PETRI_PLACES=59, PETRI_TRANSITIONS=35} [2023-08-29 22:46:35,098 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 8 predicate places. [2023-08-29 22:46:35,098 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 35 transitions, 156 flow [2023-08-29 22:46:35,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 326.8) internal successors, (3268), 10 states have internal predecessors, (3268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:35,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:46:35,099 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1] [2023-08-29 22:46:35,109 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 (18)] Forceful destruction successful, exit code 0 [2023-08-29 22:46:35,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:46:35,309 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-29 22:46:35,309 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:46:35,310 INFO L85 PathProgramCache]: Analyzing trace with hash 2115524674, now seen corresponding path program 2 times [2023-08-29 22:46:35,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 22:46:35,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1079060260] [2023-08-29 22:46:35,310 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 22:46:35,310 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 [2023-08-29 22:46:35,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 22:46:35,311 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 22:46:35,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-08-29 22:46:35,429 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-29 22:46:35,429 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 22:46:35,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-29 22:46:35,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:46:35,516 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2023-08-29 22:46:35,516 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 42 [2023-08-29 22:46:35,604 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-29 22:46:35,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 22:46:35,874 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-29 22:46:35,874 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 22:46:35,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1079060260] [2023-08-29 22:46:35,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1079060260] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 22:46:35,874 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-29 22:46:35,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 11 [2023-08-29 22:46:35,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984559971] [2023-08-29 22:46:35,875 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-29 22:46:35,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-29 22:46:35,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 22:46:35,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-29 22:46:35,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-08-29 22:46:38,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 781 [2023-08-29 22:46:38,105 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 35 transitions, 156 flow. Second operand has 12 states, 12 states have (on average 326.5) internal successors, (3918), 12 states have internal predecessors, (3918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:38,105 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:46:38,105 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 781 [2023-08-29 22:46:38,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:46:39,252 INFO L130 PetriNetUnfolder]: 2845/4248 cut-off events. [2023-08-29 22:46:39,252 INFO L131 PetriNetUnfolder]: For 3566/3566 co-relation queries the response was YES. [2023-08-29 22:46:39,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11170 conditions, 4248 events. 2845/4248 cut-off events. For 3566/3566 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 22077 event pairs, 111 based on Foata normal form. 204/3868 useless extension candidates. Maximal degree in co-relation 11147. Up to 1000 conditions per place. [2023-08-29 22:46:39,272 INFO L137 encePairwiseOnDemand]: 776/781 looper letters, 112 selfloop transitions, 6 changer transitions 0/118 dead transitions. [2023-08-29 22:46:39,273 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 118 transitions, 685 flow [2023-08-29 22:46:39,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-29 22:46:39,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-29 22:46:39,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2703 transitions. [2023-08-29 22:46:39,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43261843790012805 [2023-08-29 22:46:39,277 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2703 transitions. [2023-08-29 22:46:39,277 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2703 transitions. [2023-08-29 22:46:39,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:46:39,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2703 transitions. [2023-08-29 22:46:39,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 337.875) internal successors, (2703), 8 states have internal predecessors, (2703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:39,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 781.0) internal successors, (7029), 9 states have internal predecessors, (7029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:39,285 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 781.0) internal successors, (7029), 9 states have internal predecessors, (7029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:39,285 INFO L175 Difference]: Start difference. First operand has 59 places, 35 transitions, 156 flow. Second operand 8 states and 2703 transitions. [2023-08-29 22:46:39,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 118 transitions, 685 flow [2023-08-29 22:46:39,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 118 transitions, 643 flow, removed 10 selfloop flow, removed 7 redundant places. [2023-08-29 22:46:39,297 INFO L231 Difference]: Finished difference. Result has 58 places, 33 transitions, 136 flow [2023-08-29 22:46:39,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=136, PETRI_PLACES=58, PETRI_TRANSITIONS=33} [2023-08-29 22:46:39,298 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 7 predicate places. [2023-08-29 22:46:39,298 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 33 transitions, 136 flow [2023-08-29 22:46:39,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 326.5) internal successors, (3918), 12 states have internal predecessors, (3918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:39,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:46:39,299 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:46:39,310 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-08-29 22:46:39,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:46:39,510 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-29 22:46:39,510 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:46:39,510 INFO L85 PathProgramCache]: Analyzing trace with hash -462939428, now seen corresponding path program 1 times [2023-08-29 22:46:39,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 22:46:39,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [79475824] [2023-08-29 22:46:39,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:46:39,511 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:46:39,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 22:46:39,512 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 22:46:39,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-08-29 22:46:39,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:46:39,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-29 22:46:39,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:46:39,677 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2023-08-29 22:46:39,678 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 42 [2023-08-29 22:46:39,754 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-29 22:46:39,754 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 22:46:39,754 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 22:46:39,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [79475824] [2023-08-29 22:46:39,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [79475824] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:46:39,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:46:39,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 22:46:39,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963775261] [2023-08-29 22:46:39,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:46:39,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 22:46:39,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 22:46:39,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 22:46:39,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-29 22:46:39,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 326 out of 781 [2023-08-29 22:46:39,945 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 33 transitions, 136 flow. Second operand has 5 states, 5 states have (on average 328.0) internal successors, (1640), 5 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:39,945 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:46:39,945 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 326 of 781 [2023-08-29 22:46:39,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:46:40,691 INFO L130 PetriNetUnfolder]: 4089/6108 cut-off events. [2023-08-29 22:46:40,692 INFO L131 PetriNetUnfolder]: For 4326/4326 co-relation queries the response was YES. [2023-08-29 22:46:40,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15425 conditions, 6108 events. 4089/6108 cut-off events. For 4326/4326 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 32042 event pairs, 2431 based on Foata normal form. 0/5232 useless extension candidates. Maximal degree in co-relation 15405. Up to 4244 conditions per place. [2023-08-29 22:46:40,712 INFO L137 encePairwiseOnDemand]: 776/781 looper letters, 50 selfloop transitions, 4 changer transitions 0/54 dead transitions. [2023-08-29 22:46:40,712 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 54 transitions, 327 flow [2023-08-29 22:46:40,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 22:46:40,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 22:46:40,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1673 transitions. [2023-08-29 22:46:40,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4284250960307298 [2023-08-29 22:46:40,715 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1673 transitions. [2023-08-29 22:46:40,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1673 transitions. [2023-08-29 22:46:40,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:46:40,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1673 transitions. [2023-08-29 22:46:40,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 334.6) internal successors, (1673), 5 states have internal predecessors, (1673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:40,720 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 781.0) internal successors, (4686), 6 states have internal predecessors, (4686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:40,720 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 781.0) internal successors, (4686), 6 states have internal predecessors, (4686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:40,720 INFO L175 Difference]: Start difference. First operand has 58 places, 33 transitions, 136 flow. Second operand 5 states and 1673 transitions. [2023-08-29 22:46:40,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 54 transitions, 327 flow [2023-08-29 22:46:40,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 54 transitions, 309 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-29 22:46:40,723 INFO L231 Difference]: Finished difference. Result has 57 places, 34 transitions, 141 flow [2023-08-29 22:46:40,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=141, PETRI_PLACES=57, PETRI_TRANSITIONS=34} [2023-08-29 22:46:40,724 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 6 predicate places. [2023-08-29 22:46:40,724 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 34 transitions, 141 flow [2023-08-29 22:46:40,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 328.0) internal successors, (1640), 5 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:40,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:46:40,725 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:46:40,734 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-08-29 22:46:40,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:46:40,935 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-29 22:46:40,935 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:46:40,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1466219012, now seen corresponding path program 1 times [2023-08-29 22:46:40,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 22:46:40,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1991183440] [2023-08-29 22:46:40,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:46:40,935 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:46:40,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 22:46:40,936 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 22:46:40,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-08-29 22:46:41,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:46:41,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-29 22:46:41,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:46:41,119 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2023-08-29 22:46:41,120 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 42 [2023-08-29 22:46:41,188 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-29 22:46:41,188 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 22:46:41,397 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-29 22:46:41,398 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 22:46:41,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1991183440] [2023-08-29 22:46:41,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1991183440] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 22:46:41,398 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-29 22:46:41,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2023-08-29 22:46:41,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943867267] [2023-08-29 22:46:41,398 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-29 22:46:41,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-29 22:46:41,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 22:46:41,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-29 22:46:41,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-08-29 22:46:42,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 781 [2023-08-29 22:46:42,808 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 34 transitions, 141 flow. Second operand has 10 states, 10 states have (on average 327.2) internal successors, (3272), 10 states have internal predecessors, (3272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:42,809 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:46:42,809 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 781 [2023-08-29 22:46:42,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:46:44,273 INFO L130 PetriNetUnfolder]: 6577/9828 cut-off events. [2023-08-29 22:46:44,274 INFO L131 PetriNetUnfolder]: For 6943/6943 co-relation queries the response was YES. [2023-08-29 22:46:44,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26052 conditions, 9828 events. 6577/9828 cut-off events. For 6943/6943 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 56006 event pairs, 2431 based on Foata normal form. 0/9536 useless extension candidates. Maximal degree in co-relation 26031. Up to 4244 conditions per place. [2023-08-29 22:46:44,309 INFO L137 encePairwiseOnDemand]: 776/781 looper letters, 90 selfloop transitions, 6 changer transitions 0/96 dead transitions. [2023-08-29 22:46:44,309 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 96 transitions, 563 flow [2023-08-29 22:46:44,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 22:46:44,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 22:46:44,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2351 transitions. [2023-08-29 22:46:44,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43003475397841595 [2023-08-29 22:46:44,313 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2351 transitions. [2023-08-29 22:46:44,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2351 transitions. [2023-08-29 22:46:44,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:46:44,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2351 transitions. [2023-08-29 22:46:44,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 335.85714285714283) internal successors, (2351), 7 states have internal predecessors, (2351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:44,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:44,320 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:44,320 INFO L175 Difference]: Start difference. First operand has 57 places, 34 transitions, 141 flow. Second operand 7 states and 2351 transitions. [2023-08-29 22:46:44,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 96 transitions, 563 flow [2023-08-29 22:46:44,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 96 transitions, 557 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-29 22:46:44,325 INFO L231 Difference]: Finished difference. Result has 62 places, 36 transitions, 165 flow [2023-08-29 22:46:44,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=165, PETRI_PLACES=62, PETRI_TRANSITIONS=36} [2023-08-29 22:46:44,325 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 11 predicate places. [2023-08-29 22:46:44,326 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 36 transitions, 165 flow [2023-08-29 22:46:44,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 327.2) internal successors, (3272), 10 states have internal predecessors, (3272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:44,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:46:44,326 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:46:44,339 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2023-08-29 22:46:44,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:46:44,537 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-29 22:46:44,537 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:46:44,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1500743248, now seen corresponding path program 2 times [2023-08-29 22:46:44,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 22:46:44,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [871182054] [2023-08-29 22:46:44,537 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 22:46:44,538 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:46:44,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 22:46:44,538 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 22:46:44,539 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-08-29 22:46:44,670 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-29 22:46:44,670 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 22:46:44,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-29 22:46:44,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:46:44,695 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-29 22:46:44,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 22:46:44,735 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-29 22:46:44,735 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 22:46:44,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [871182054] [2023-08-29 22:46:44,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [871182054] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 22:46:44,735 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-29 22:46:44,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-08-29 22:46:44,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514858438] [2023-08-29 22:46:44,735 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-29 22:46:44,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-29 22:46:44,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 22:46:44,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-29 22:46:44,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-08-29 22:46:44,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 335 out of 781 [2023-08-29 22:46:44,845 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 36 transitions, 165 flow. Second operand has 10 states, 10 states have (on average 336.6) internal successors, (3366), 10 states have internal predecessors, (3366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:44,845 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:46:44,845 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 335 of 781 [2023-08-29 22:46:44,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:46:46,327 INFO L130 PetriNetUnfolder]: 5675/8648 cut-off events. [2023-08-29 22:46:46,327 INFO L131 PetriNetUnfolder]: For 8811/8811 co-relation queries the response was YES. [2023-08-29 22:46:46,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24153 conditions, 8648 events. 5675/8648 cut-off events. For 8811/8811 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 51371 event pairs, 337 based on Foata normal form. 556/9204 useless extension candidates. Maximal degree in co-relation 24130. Up to 1996 conditions per place. [2023-08-29 22:46:46,355 INFO L137 encePairwiseOnDemand]: 778/781 looper letters, 113 selfloop transitions, 4 changer transitions 0/117 dead transitions. [2023-08-29 22:46:46,355 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 117 transitions, 713 flow [2023-08-29 22:46:46,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 22:46:46,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 22:46:46,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2102 transitions. [2023-08-29 22:46:46,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4485702091335894 [2023-08-29 22:46:46,358 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2102 transitions. [2023-08-29 22:46:46,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2102 transitions. [2023-08-29 22:46:46,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:46:46,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2102 transitions. [2023-08-29 22:46:46,362 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 350.3333333333333) internal successors, (2102), 6 states have internal predecessors, (2102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:46,365 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 781.0) internal successors, (5467), 7 states have internal predecessors, (5467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:46,365 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 781.0) internal successors, (5467), 7 states have internal predecessors, (5467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:46,366 INFO L175 Difference]: Start difference. First operand has 62 places, 36 transitions, 165 flow. Second operand 6 states and 2102 transitions. [2023-08-29 22:46:46,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 117 transitions, 713 flow [2023-08-29 22:46:46,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 117 transitions, 671 flow, removed 10 selfloop flow, removed 7 redundant places. [2023-08-29 22:46:46,389 INFO L231 Difference]: Finished difference. Result has 59 places, 34 transitions, 141 flow [2023-08-29 22:46:46,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=141, PETRI_PLACES=59, PETRI_TRANSITIONS=34} [2023-08-29 22:46:46,389 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 8 predicate places. [2023-08-29 22:46:46,389 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 34 transitions, 141 flow [2023-08-29 22:46:46,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 336.6) internal successors, (3366), 10 states have internal predecessors, (3366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:46,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:46:46,390 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:46:46,398 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Ended with exit code 0 [2023-08-29 22:46:46,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:46:46,591 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-29 22:46:46,591 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:46:46,591 INFO L85 PathProgramCache]: Analyzing trace with hash -287153668, now seen corresponding path program 2 times [2023-08-29 22:46:46,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 22:46:46,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1647068712] [2023-08-29 22:46:46,591 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 22:46:46,591 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:46:46,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 22:46:46,592 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 22:46:46,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-08-29 22:46:46,740 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-29 22:46:46,740 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 22:46:46,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-29 22:46:46,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:46:46,840 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2023-08-29 22:46:46,841 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 42 [2023-08-29 22:46:46,945 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-29 22:46:46,945 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 22:46:47,251 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-29 22:46:47,252 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 22:46:47,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1647068712] [2023-08-29 22:46:47,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1647068712] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 22:46:47,252 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-29 22:46:47,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 11 [2023-08-29 22:46:47,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959962032] [2023-08-29 22:46:47,253 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-29 22:46:47,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-29 22:46:47,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 22:46:47,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-29 22:46:47,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-08-29 22:46:49,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 781 [2023-08-29 22:46:49,417 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 34 transitions, 141 flow. Second operand has 12 states, 12 states have (on average 327.1666666666667) internal successors, (3926), 12 states have internal predecessors, (3926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:49,417 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:46:49,417 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 781 [2023-08-29 22:46:49,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:46:50,807 INFO L130 PetriNetUnfolder]: 4872/7579 cut-off events. [2023-08-29 22:46:50,808 INFO L131 PetriNetUnfolder]: For 4323/4323 co-relation queries the response was YES. [2023-08-29 22:46:50,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19628 conditions, 7579 events. 4872/7579 cut-off events. For 4323/4323 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 44413 event pairs, 576 based on Foata normal form. 532/8111 useless extension candidates. Maximal degree in co-relation 19609. Up to 1638 conditions per place. [2023-08-29 22:46:50,832 INFO L137 encePairwiseOnDemand]: 776/781 looper letters, 95 selfloop transitions, 6 changer transitions 0/101 dead transitions. [2023-08-29 22:46:50,832 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 101 transitions, 562 flow [2023-08-29 22:46:50,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-29 22:46:50,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-29 22:46:50,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2681 transitions. [2023-08-29 22:46:50,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4290973111395647 [2023-08-29 22:46:50,837 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2681 transitions. [2023-08-29 22:46:50,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2681 transitions. [2023-08-29 22:46:50,838 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:46:50,838 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2681 transitions. [2023-08-29 22:46:50,840 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 335.125) internal successors, (2681), 8 states have internal predecessors, (2681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:50,845 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 781.0) internal successors, (7029), 9 states have internal predecessors, (7029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:50,845 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 781.0) internal successors, (7029), 9 states have internal predecessors, (7029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:50,845 INFO L175 Difference]: Start difference. First operand has 59 places, 34 transitions, 141 flow. Second operand 8 states and 2681 transitions. [2023-08-29 22:46:50,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 101 transitions, 562 flow [2023-08-29 22:46:50,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 101 transitions, 518 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-08-29 22:46:50,867 INFO L231 Difference]: Finished difference. Result has 57 places, 32 transitions, 123 flow [2023-08-29 22:46:50,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=123, PETRI_PLACES=57, PETRI_TRANSITIONS=32} [2023-08-29 22:46:50,867 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 6 predicate places. [2023-08-29 22:46:50,867 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 32 transitions, 123 flow [2023-08-29 22:46:50,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 327.1666666666667) internal successors, (3926), 12 states have internal predecessors, (3926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:50,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:46:50,868 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:46:50,876 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2023-08-29 22:46:51,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:46:51,069 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-29 22:46:51,070 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:46:51,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1532449246, now seen corresponding path program 1 times [2023-08-29 22:46:51,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 22:46:51,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [344326666] [2023-08-29 22:46:51,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:46:51,070 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:46:51,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 22:46:51,071 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 22:46:51,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-08-29 22:46:51,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:46:51,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-29 22:46:51,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:46:51,467 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-29 22:46:51,468 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 22:46:51,468 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 22:46:51,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [344326666] [2023-08-29 22:46:51,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [344326666] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:46:51,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:46:51,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-29 22:46:51,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227360633] [2023-08-29 22:46:51,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:46:51,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-29 22:46:51,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 22:46:51,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-29 22:46:51,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-29 22:46:51,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 781 [2023-08-29 22:46:51,869 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 32 transitions, 123 flow. Second operand has 8 states, 8 states have (on average 305.625) internal successors, (2445), 8 states have internal predecessors, (2445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:51,869 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:46:51,869 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 781 [2023-08-29 22:46:51,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:46:53,341 INFO L130 PetriNetUnfolder]: 5014/7836 cut-off events. [2023-08-29 22:46:53,341 INFO L131 PetriNetUnfolder]: For 3175/3175 co-relation queries the response was YES. [2023-08-29 22:46:53,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19494 conditions, 7836 events. 5014/7836 cut-off events. For 3175/3175 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 46152 event pairs, 3710 based on Foata normal form. 7/7843 useless extension candidates. Maximal degree in co-relation 19477. Up to 5788 conditions per place. [2023-08-29 22:46:53,363 INFO L137 encePairwiseOnDemand]: 772/781 looper letters, 86 selfloop transitions, 6 changer transitions 10/102 dead transitions. [2023-08-29 22:46:53,364 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 102 transitions, 555 flow [2023-08-29 22:46:53,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 22:46:53,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 22:46:53,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2206 transitions. [2023-08-29 22:46:53,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4035119809767697 [2023-08-29 22:46:53,366 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2206 transitions. [2023-08-29 22:46:53,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2206 transitions. [2023-08-29 22:46:53,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:46:53,366 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2206 transitions. [2023-08-29 22:46:53,368 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 315.14285714285717) internal successors, (2206), 7 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:53,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:53,372 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:53,372 INFO L175 Difference]: Start difference. First operand has 57 places, 32 transitions, 123 flow. Second operand 7 states and 2206 transitions. [2023-08-29 22:46:53,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 102 transitions, 555 flow [2023-08-29 22:46:53,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 102 transitions, 516 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-29 22:46:53,376 INFO L231 Difference]: Finished difference. Result has 62 places, 36 transitions, 159 flow [2023-08-29 22:46:53,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=159, PETRI_PLACES=62, PETRI_TRANSITIONS=36} [2023-08-29 22:46:53,376 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 11 predicate places. [2023-08-29 22:46:53,376 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 36 transitions, 159 flow [2023-08-29 22:46:53,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 305.625) internal successors, (2445), 8 states have internal predecessors, (2445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:53,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:46:53,377 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:46:53,387 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 (24)] Ended with exit code 0 [2023-08-29 22:46:53,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:46:53,587 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-29 22:46:53,587 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:46:53,587 INFO L85 PathProgramCache]: Analyzing trace with hash 385831842, now seen corresponding path program 2 times [2023-08-29 22:46:53,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 22:46:53,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [8210418] [2023-08-29 22:46:53,588 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 22:46:53,588 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:46:53,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 22:46:53,589 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 22:46:53,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-08-29 22:46:53,706 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-29 22:46:53,707 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 22:46:53,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-29 22:46:53,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:46:53,880 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-29 22:46:53,880 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 22:46:53,880 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 22:46:53,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [8210418] [2023-08-29 22:46:53,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [8210418] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:46:53,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:46:53,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 22:46:53,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91698270] [2023-08-29 22:46:53,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:46:53,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 22:46:53,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 22:46:53,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 22:46:53,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-29 22:46:54,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 781 [2023-08-29 22:46:54,207 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 36 transitions, 159 flow. Second operand has 6 states, 6 states have (on average 310.5) internal successors, (1863), 6 states have internal predecessors, (1863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:54,207 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:46:54,207 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 781 [2023-08-29 22:46:54,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:46:55,497 INFO L130 PetriNetUnfolder]: 5086/7967 cut-off events. [2023-08-29 22:46:55,497 INFO L131 PetriNetUnfolder]: For 5734/5734 co-relation queries the response was YES. [2023-08-29 22:46:55,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22813 conditions, 7967 events. 5086/7967 cut-off events. For 5734/5734 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 47364 event pairs, 3692 based on Foata normal form. 4/7971 useless extension candidates. Maximal degree in co-relation 22792. Up to 5868 conditions per place. [2023-08-29 22:46:55,523 INFO L137 encePairwiseOnDemand]: 774/781 looper letters, 77 selfloop transitions, 8 changer transitions 13/98 dead transitions. [2023-08-29 22:46:55,524 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 98 transitions, 596 flow [2023-08-29 22:46:55,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 22:46:55,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 22:46:55,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1914 transitions. [2023-08-29 22:46:55,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4084507042253521 [2023-08-29 22:46:55,526 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1914 transitions. [2023-08-29 22:46:55,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1914 transitions. [2023-08-29 22:46:55,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:46:55,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1914 transitions. [2023-08-29 22:46:55,528 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 319.0) internal successors, (1914), 6 states have internal predecessors, (1914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:55,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 781.0) internal successors, (5467), 7 states have internal predecessors, (5467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:55,531 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 781.0) internal successors, (5467), 7 states have internal predecessors, (5467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:55,531 INFO L175 Difference]: Start difference. First operand has 62 places, 36 transitions, 159 flow. Second operand 6 states and 1914 transitions. [2023-08-29 22:46:55,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 98 transitions, 596 flow [2023-08-29 22:46:55,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 98 transitions, 552 flow, removed 12 selfloop flow, removed 3 redundant places. [2023-08-29 22:46:55,540 INFO L231 Difference]: Finished difference. Result has 67 places, 39 transitions, 198 flow [2023-08-29 22:46:55,540 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=198, PETRI_PLACES=67, PETRI_TRANSITIONS=39} [2023-08-29 22:46:55,540 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 16 predicate places. [2023-08-29 22:46:55,540 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 39 transitions, 198 flow [2023-08-29 22:46:55,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 310.5) internal successors, (1863), 6 states have internal predecessors, (1863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:55,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:46:55,541 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:46:55,548 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 (25)] Ended with exit code 0 [2023-08-29 22:46:55,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:46:55,745 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-29 22:46:55,745 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:46:55,745 INFO L85 PathProgramCache]: Analyzing trace with hash -402423942, now seen corresponding path program 3 times [2023-08-29 22:46:55,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 22:46:55,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1543915742] [2023-08-29 22:46:55,746 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-29 22:46:55,746 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:46:55,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 22:46:55,750 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 22:46:55,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-08-29 22:46:55,873 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-29 22:46:55,874 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 22:46:55,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-29 22:46:55,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:46:56,115 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-29 22:46:56,115 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 22:46:56,115 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 22:46:56,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1543915742] [2023-08-29 22:46:56,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1543915742] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:46:56,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:46:56,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-29 22:46:56,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518962724] [2023-08-29 22:46:56,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:46:56,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-29 22:46:56,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 22:46:56,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-29 22:46:56,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-29 22:46:56,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 781 [2023-08-29 22:46:56,580 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 39 transitions, 198 flow. Second operand has 8 states, 8 states have (on average 305.625) internal successors, (2445), 8 states have internal predecessors, (2445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:56,580 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:46:56,580 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 781 [2023-08-29 22:46:56,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:46:58,123 INFO L130 PetriNetUnfolder]: 5218/8196 cut-off events. [2023-08-29 22:46:58,123 INFO L131 PetriNetUnfolder]: For 11747/11747 co-relation queries the response was YES. [2023-08-29 22:46:58,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26687 conditions, 8196 events. 5218/8196 cut-off events. For 11747/11747 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 49029 event pairs, 3751 based on Foata normal form. 5/8201 useless extension candidates. Maximal degree in co-relation 26663. Up to 5845 conditions per place. [2023-08-29 22:46:58,156 INFO L137 encePairwiseOnDemand]: 772/781 looper letters, 102 selfloop transitions, 8 changer transitions 8/118 dead transitions. [2023-08-29 22:46:58,157 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 118 transitions, 823 flow [2023-08-29 22:46:58,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 22:46:58,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 22:46:58,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2204 transitions. [2023-08-29 22:46:58,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4031461496250229 [2023-08-29 22:46:58,160 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2204 transitions. [2023-08-29 22:46:58,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2204 transitions. [2023-08-29 22:46:58,160 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:46:58,160 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2204 transitions. [2023-08-29 22:46:58,162 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 314.85714285714283) internal successors, (2204), 7 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:58,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:58,167 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:58,167 INFO L175 Difference]: Start difference. First operand has 67 places, 39 transitions, 198 flow. Second operand 7 states and 2204 transitions. [2023-08-29 22:46:58,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 118 transitions, 823 flow [2023-08-29 22:46:58,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 118 transitions, 757 flow, removed 20 selfloop flow, removed 3 redundant places. [2023-08-29 22:46:58,179 INFO L231 Difference]: Finished difference. Result has 73 places, 44 transitions, 253 flow [2023-08-29 22:46:58,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=253, PETRI_PLACES=73, PETRI_TRANSITIONS=44} [2023-08-29 22:46:58,180 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 22 predicate places. [2023-08-29 22:46:58,180 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 44 transitions, 253 flow [2023-08-29 22:46:58,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 305.625) internal successors, (2445), 8 states have internal predecessors, (2445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:58,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:46:58,181 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:46:58,191 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2023-08-29 22:46:58,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:46:58,391 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-29 22:46:58,391 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:46:58,391 INFO L85 PathProgramCache]: Analyzing trace with hash -207091048, now seen corresponding path program 4 times [2023-08-29 22:46:58,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 22:46:58,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1030211648] [2023-08-29 22:46:58,392 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-29 22:46:58,392 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:46:58,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 22:46:58,393 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 22:46:58,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-08-29 22:46:58,540 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-29 22:46:58,540 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 22:46:58,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-29 22:46:58,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:46:58,828 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-29 22:46:58,828 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 22:46:58,828 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 22:46:58,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1030211648] [2023-08-29 22:46:58,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1030211648] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:46:58,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:46:58,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 22:46:58,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996840012] [2023-08-29 22:46:58,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:46:58,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 22:46:58,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 22:46:58,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 22:46:58,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-29 22:46:59,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 781 [2023-08-29 22:46:59,183 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 44 transitions, 253 flow. Second operand has 6 states, 6 states have (on average 310.5) internal successors, (1863), 6 states have internal predecessors, (1863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:46:59,183 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:46:59,183 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 781 [2023-08-29 22:46:59,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:47:00,679 INFO L130 PetriNetUnfolder]: 5501/8670 cut-off events. [2023-08-29 22:47:00,679 INFO L131 PetriNetUnfolder]: For 13602/13602 co-relation queries the response was YES. [2023-08-29 22:47:00,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29147 conditions, 8670 events. 5501/8670 cut-off events. For 13602/13602 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 52811 event pairs, 3800 based on Foata normal form. 6/8676 useless extension candidates. Maximal degree in co-relation 29120. Up to 6112 conditions per place. [2023-08-29 22:47:00,720 INFO L137 encePairwiseOnDemand]: 774/781 looper letters, 83 selfloop transitions, 18 changer transitions 14/115 dead transitions. [2023-08-29 22:47:00,721 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 115 transitions, 833 flow [2023-08-29 22:47:00,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 22:47:00,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 22:47:00,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1917 transitions. [2023-08-29 22:47:00,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2023-08-29 22:47:00,723 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1917 transitions. [2023-08-29 22:47:00,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1917 transitions. [2023-08-29 22:47:00,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:47:00,724 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1917 transitions. [2023-08-29 22:47:00,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 319.5) internal successors, (1917), 6 states have internal predecessors, (1917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:47:00,729 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 781.0) internal successors, (5467), 7 states have internal predecessors, (5467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:47:00,729 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 781.0) internal successors, (5467), 7 states have internal predecessors, (5467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:47:00,729 INFO L175 Difference]: Start difference. First operand has 73 places, 44 transitions, 253 flow. Second operand 6 states and 1917 transitions. [2023-08-29 22:47:00,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 115 transitions, 833 flow [2023-08-29 22:47:00,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 115 transitions, 790 flow, removed 9 selfloop flow, removed 3 redundant places. [2023-08-29 22:47:00,749 INFO L231 Difference]: Finished difference. Result has 78 places, 54 transitions, 408 flow [2023-08-29 22:47:00,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=408, PETRI_PLACES=78, PETRI_TRANSITIONS=54} [2023-08-29 22:47:00,750 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 27 predicate places. [2023-08-29 22:47:00,750 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 54 transitions, 408 flow [2023-08-29 22:47:00,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 310.5) internal successors, (1863), 6 states have internal predecessors, (1863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:47:00,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:47:00,750 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:47:00,758 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Ended with exit code 0 [2023-08-29 22:47:00,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:47:00,951 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-29 22:47:00,951 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:47:00,951 INFO L85 PathProgramCache]: Analyzing trace with hash -2143863636, now seen corresponding path program 5 times [2023-08-29 22:47:00,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 22:47:00,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [655673666] [2023-08-29 22:47:00,951 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-29 22:47:00,952 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:47:00,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 22:47:00,952 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 22:47:00,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2023-08-29 22:47:01,103 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-29 22:47:01,104 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 22:47:01,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-29 22:47:01,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:47:01,397 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-29 22:47:01,397 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 22:47:01,397 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 22:47:01,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [655673666] [2023-08-29 22:47:01,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [655673666] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:47:01,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:47:01,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-29 22:47:01,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405833033] [2023-08-29 22:47:01,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:47:01,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-29 22:47:01,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 22:47:01,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-29 22:47:01,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-29 22:47:01,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 781 [2023-08-29 22:47:01,918 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 54 transitions, 408 flow. Second operand has 8 states, 8 states have (on average 305.625) internal successors, (2445), 8 states have internal predecessors, (2445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:47:01,918 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:47:01,918 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 781 [2023-08-29 22:47:01,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:47:03,631 INFO L130 PetriNetUnfolder]: 5837/9233 cut-off events. [2023-08-29 22:47:03,632 INFO L131 PetriNetUnfolder]: For 26337/26337 co-relation queries the response was YES. [2023-08-29 22:47:03,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34928 conditions, 9233 events. 5837/9233 cut-off events. For 26337/26337 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 57221 event pairs, 3849 based on Foata normal form. 5/9238 useless extension candidates. Maximal degree in co-relation 34898. Up to 6155 conditions per place. [2023-08-29 22:47:03,678 INFO L137 encePairwiseOnDemand]: 772/781 looper letters, 123 selfloop transitions, 23 changer transitions 8/154 dead transitions. [2023-08-29 22:47:03,678 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 154 transitions, 1374 flow [2023-08-29 22:47:03,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 22:47:03,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 22:47:03,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2209 transitions. [2023-08-29 22:47:03,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40406072800438997 [2023-08-29 22:47:03,680 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2209 transitions. [2023-08-29 22:47:03,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2209 transitions. [2023-08-29 22:47:03,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:47:03,681 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2209 transitions. [2023-08-29 22:47:03,682 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 315.57142857142856) internal successors, (2209), 7 states have internal predecessors, (2209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:47:03,684 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:47:03,685 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:47:03,685 INFO L175 Difference]: Start difference. First operand has 78 places, 54 transitions, 408 flow. Second operand 7 states and 2209 transitions. [2023-08-29 22:47:03,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 154 transitions, 1374 flow [2023-08-29 22:47:03,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 154 transitions, 1332 flow, removed 10 selfloop flow, removed 2 redundant places. [2023-08-29 22:47:03,706 INFO L231 Difference]: Finished difference. Result has 86 places, 68 transitions, 663 flow [2023-08-29 22:47:03,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=663, PETRI_PLACES=86, PETRI_TRANSITIONS=68} [2023-08-29 22:47:03,707 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 35 predicate places. [2023-08-29 22:47:03,707 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 68 transitions, 663 flow [2023-08-29 22:47:03,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 305.625) internal successors, (2445), 8 states have internal predecessors, (2445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:47:03,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:47:03,708 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:47:03,718 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 (28)] Ended with exit code 0 [2023-08-29 22:47:03,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:47:03,919 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-29 22:47:03,919 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:47:03,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1195217666, now seen corresponding path program 6 times [2023-08-29 22:47:03,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 22:47:03,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1745067645] [2023-08-29 22:47:03,919 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-29 22:47:03,919 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:47:03,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 22:47:03,920 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 22:47:03,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2023-08-29 22:47:04,059 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-08-29 22:47:04,059 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 22:47:04,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-29 22:47:04,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:47:04,285 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-29 22:47:04,286 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 22:47:04,286 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 22:47:04,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1745067645] [2023-08-29 22:47:04,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1745067645] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:47:04,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:47:04,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 22:47:04,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546070247] [2023-08-29 22:47:04,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:47:04,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 22:47:04,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 22:47:04,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 22:47:04,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-29 22:47:04,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 781 [2023-08-29 22:47:04,571 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 68 transitions, 663 flow. Second operand has 6 states, 6 states have (on average 310.5) internal successors, (1863), 6 states have internal predecessors, (1863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:47:04,571 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:47:04,571 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 781 [2023-08-29 22:47:04,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:47:06,102 INFO L130 PetriNetUnfolder]: 5836/9296 cut-off events. [2023-08-29 22:47:06,102 INFO L131 PetriNetUnfolder]: For 36049/36049 co-relation queries the response was YES. [2023-08-29 22:47:06,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38328 conditions, 9296 events. 5836/9296 cut-off events. For 36049/36049 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 58144 event pairs, 3856 based on Foata normal form. 9/9305 useless extension candidates. Maximal degree in co-relation 38294. Up to 6386 conditions per place. [2023-08-29 22:47:06,156 INFO L137 encePairwiseOnDemand]: 774/781 looper letters, 89 selfloop transitions, 39 changer transitions 17/145 dead transitions. [2023-08-29 22:47:06,157 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 145 transitions, 1483 flow [2023-08-29 22:47:06,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 22:47:06,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 22:47:06,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1913 transitions. [2023-08-29 22:47:06,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4082373026034998 [2023-08-29 22:47:06,160 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1913 transitions. [2023-08-29 22:47:06,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1913 transitions. [2023-08-29 22:47:06,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:47:06,161 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1913 transitions. [2023-08-29 22:47:06,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 318.8333333333333) internal successors, (1913), 6 states have internal predecessors, (1913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:47:06,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 781.0) internal successors, (5467), 7 states have internal predecessors, (5467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:47:06,166 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 781.0) internal successors, (5467), 7 states have internal predecessors, (5467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:47:06,167 INFO L175 Difference]: Start difference. First operand has 86 places, 68 transitions, 663 flow. Second operand 6 states and 1913 transitions. [2023-08-29 22:47:06,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 145 transitions, 1483 flow [2023-08-29 22:47:06,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 145 transitions, 1441 flow, removed 14 selfloop flow, removed 2 redundant places. [2023-08-29 22:47:06,210 INFO L231 Difference]: Finished difference. Result has 92 places, 82 transitions, 973 flow [2023-08-29 22:47:06,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=646, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=973, PETRI_PLACES=92, PETRI_TRANSITIONS=82} [2023-08-29 22:47:06,211 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 41 predicate places. [2023-08-29 22:47:06,211 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 82 transitions, 973 flow [2023-08-29 22:47:06,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 310.5) internal successors, (1863), 6 states have internal predecessors, (1863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:47:06,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:47:06,211 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:47:06,239 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Ended with exit code 0 [2023-08-29 22:47:06,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:47:06,419 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-29 22:47:06,419 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:47:06,420 INFO L85 PathProgramCache]: Analyzing trace with hash -967072956, now seen corresponding path program 7 times [2023-08-29 22:47:06,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 22:47:06,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1284850682] [2023-08-29 22:47:06,420 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-29 22:47:06,420 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:47:06,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 22:47:06,421 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 22:47:06,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2023-08-29 22:47:06,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:47:06,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-29 22:47:06,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:47:07,538 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-29 22:47:07,538 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 22:47:07,538 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 22:47:07,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1284850682] [2023-08-29 22:47:07,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1284850682] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:47:07,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:47:07,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-29 22:47:07,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238113124] [2023-08-29 22:47:07,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:47:07,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-29 22:47:07,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 22:47:07,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-29 22:47:07,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-08-29 22:47:08,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 781 [2023-08-29 22:47:08,671 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 82 transitions, 973 flow. Second operand has 8 states, 8 states have (on average 303.625) internal successors, (2429), 8 states have internal predecessors, (2429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:47:08,671 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:47:08,671 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 781 [2023-08-29 22:47:08,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:47:11,112 INFO L130 PetriNetUnfolder]: 6128/9732 cut-off events. [2023-08-29 22:47:11,113 INFO L131 PetriNetUnfolder]: For 55634/55634 co-relation queries the response was YES. [2023-08-29 22:47:11,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44123 conditions, 9732 events. 6128/9732 cut-off events. For 55634/55634 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 61407 event pairs, 3775 based on Foata normal form. 7/9739 useless extension candidates. Maximal degree in co-relation 44086. Up to 6179 conditions per place. [2023-08-29 22:47:11,183 INFO L137 encePairwiseOnDemand]: 771/781 looper letters, 161 selfloop transitions, 27 changer transitions 8/196 dead transitions. [2023-08-29 22:47:11,183 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 196 transitions, 2389 flow [2023-08-29 22:47:11,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-29 22:47:11,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-29 22:47:11,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2503 transitions. [2023-08-29 22:47:11,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40060819462227915 [2023-08-29 22:47:11,186 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2503 transitions. [2023-08-29 22:47:11,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2503 transitions. [2023-08-29 22:47:11,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:47:11,187 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2503 transitions. [2023-08-29 22:47:11,189 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 312.875) internal successors, (2503), 8 states have internal predecessors, (2503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:47:11,191 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 781.0) internal successors, (7029), 9 states have internal predecessors, (7029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:47:11,192 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 781.0) internal successors, (7029), 9 states have internal predecessors, (7029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:47:11,192 INFO L175 Difference]: Start difference. First operand has 92 places, 82 transitions, 973 flow. Second operand 8 states and 2503 transitions. [2023-08-29 22:47:11,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 196 transitions, 2389 flow [2023-08-29 22:47:11,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 196 transitions, 2187 flow, removed 41 selfloop flow, removed 3 redundant places. [2023-08-29 22:47:11,264 INFO L231 Difference]: Finished difference. Result has 101 places, 102 transitions, 1227 flow [2023-08-29 22:47:11,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=869, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1227, PETRI_PLACES=101, PETRI_TRANSITIONS=102} [2023-08-29 22:47:11,265 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 50 predicate places. [2023-08-29 22:47:11,265 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 102 transitions, 1227 flow [2023-08-29 22:47:11,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 303.625) internal successors, (2429), 8 states have internal predecessors, (2429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:47:11,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:47:11,266 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:47:11,276 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2023-08-29 22:47:11,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:47:11,476 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-29 22:47:11,476 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:47:11,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1282802204, now seen corresponding path program 8 times [2023-08-29 22:47:11,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 22:47:11,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [871664084] [2023-08-29 22:47:11,477 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 22:47:11,477 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:47:11,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 22:47:11,478 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 22:47:11,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2023-08-29 22:47:11,612 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-29 22:47:11,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 22:47:11,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-29 22:47:11,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:47:11,860 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-29 22:47:11,860 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 22:47:11,860 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 22:47:11,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [871664084] [2023-08-29 22:47:11,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [871664084] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:47:11,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:47:11,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 22:47:11,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043657662] [2023-08-29 22:47:11,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:47:11,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 22:47:11,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 22:47:11,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 22:47:11,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-29 22:47:12,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 781 [2023-08-29 22:47:12,121 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 102 transitions, 1227 flow. Second operand has 6 states, 6 states have (on average 310.5) internal successors, (1863), 6 states have internal predecessors, (1863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:47:12,121 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:47:12,121 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 781 [2023-08-29 22:47:12,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:47:13,857 INFO L130 PetriNetUnfolder]: 6122/9703 cut-off events. [2023-08-29 22:47:13,858 INFO L131 PetriNetUnfolder]: For 55403/55403 co-relation queries the response was YES. [2023-08-29 22:47:13,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45476 conditions, 9703 events. 6122/9703 cut-off events. For 55403/55403 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 60786 event pairs, 3935 based on Foata normal form. 10/9713 useless extension candidates. Maximal degree in co-relation 45434. Up to 6577 conditions per place. [2023-08-29 22:47:13,927 INFO L137 encePairwiseOnDemand]: 774/781 looper letters, 106 selfloop transitions, 52 changer transitions 18/176 dead transitions. [2023-08-29 22:47:13,927 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 176 transitions, 2106 flow [2023-08-29 22:47:13,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 22:47:13,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 22:47:13,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1913 transitions. [2023-08-29 22:47:13,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4082373026034998 [2023-08-29 22:47:13,929 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1913 transitions. [2023-08-29 22:47:13,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1913 transitions. [2023-08-29 22:47:13,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:47:13,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1913 transitions. [2023-08-29 22:47:13,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 318.8333333333333) internal successors, (1913), 6 states have internal predecessors, (1913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:47:13,934 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 781.0) internal successors, (5467), 7 states have internal predecessors, (5467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:47:13,935 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 781.0) internal successors, (5467), 7 states have internal predecessors, (5467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:47:13,935 INFO L175 Difference]: Start difference. First operand has 101 places, 102 transitions, 1227 flow. Second operand 6 states and 1913 transitions. [2023-08-29 22:47:13,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 176 transitions, 2106 flow [2023-08-29 22:47:14,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 176 transitions, 2090 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-08-29 22:47:14,043 INFO L231 Difference]: Finished difference. Result has 107 places, 110 transitions, 1462 flow [2023-08-29 22:47:14,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=1213, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1462, PETRI_PLACES=107, PETRI_TRANSITIONS=110} [2023-08-29 22:47:14,043 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 56 predicate places. [2023-08-29 22:47:14,044 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 110 transitions, 1462 flow [2023-08-29 22:47:14,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 310.5) internal successors, (1863), 6 states have internal predecessors, (1863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:47:14,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:47:14,044 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:47:14,052 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2023-08-29 22:47:14,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:47:14,245 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-29 22:47:14,245 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:47:14,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1310716994, now seen corresponding path program 9 times [2023-08-29 22:47:14,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 22:47:14,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1796995155] [2023-08-29 22:47:14,245 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-29 22:47:14,245 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:47:14,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 22:47:14,247 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 22:47:14,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2023-08-29 22:47:14,385 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-29 22:47:14,385 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 22:47:14,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-29 22:47:14,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:47:14,635 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-29 22:47:14,635 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 22:47:14,635 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 22:47:14,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1796995155] [2023-08-29 22:47:14,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1796995155] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:47:14,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:47:14,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-29 22:47:14,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130070462] [2023-08-29 22:47:14,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:47:14,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-29 22:47:14,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 22:47:14,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-29 22:47:14,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-08-29 22:47:15,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 781 [2023-08-29 22:47:15,056 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 110 transitions, 1462 flow. Second operand has 8 states, 8 states have (on average 305.625) internal successors, (2445), 8 states have internal predecessors, (2445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:47:15,056 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:47:15,056 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 781 [2023-08-29 22:47:15,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:47:16,985 INFO L130 PetriNetUnfolder]: 6101/9689 cut-off events. [2023-08-29 22:47:16,985 INFO L131 PetriNetUnfolder]: For 69657/69657 co-relation queries the response was YES. [2023-08-29 22:47:17,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47897 conditions, 9689 events. 6101/9689 cut-off events. For 69657/69657 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 60422 event pairs, 3962 based on Foata normal form. 5/9694 useless extension candidates. Maximal degree in co-relation 47852. Up to 6742 conditions per place. [2023-08-29 22:47:17,041 INFO L137 encePairwiseOnDemand]: 772/781 looper letters, 135 selfloop transitions, 56 changer transitions 8/199 dead transitions. [2023-08-29 22:47:17,041 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 199 transitions, 2701 flow [2023-08-29 22:47:17,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 22:47:17,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 22:47:17,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2199 transitions. [2023-08-29 22:47:17,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40223157124565573 [2023-08-29 22:47:17,044 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2199 transitions. [2023-08-29 22:47:17,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2199 transitions. [2023-08-29 22:47:17,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:47:17,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2199 transitions. [2023-08-29 22:47:17,046 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 314.14285714285717) internal successors, (2199), 7 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:47:17,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:47:17,048 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:47:17,048 INFO L175 Difference]: Start difference. First operand has 107 places, 110 transitions, 1462 flow. Second operand 7 states and 2199 transitions. [2023-08-29 22:47:17,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 199 transitions, 2701 flow [2023-08-29 22:47:17,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 199 transitions, 2558 flow, removed 23 selfloop flow, removed 4 redundant places. [2023-08-29 22:47:17,160 INFO L231 Difference]: Finished difference. Result has 113 places, 129 transitions, 1836 flow [2023-08-29 22:47:17,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=1374, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1836, PETRI_PLACES=113, PETRI_TRANSITIONS=129} [2023-08-29 22:47:17,160 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 62 predicate places. [2023-08-29 22:47:17,161 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 129 transitions, 1836 flow [2023-08-29 22:47:17,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 305.625) internal successors, (2445), 8 states have internal predecessors, (2445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:47:17,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:47:17,161 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:47:17,169 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Ended with exit code 0 [2023-08-29 22:47:17,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:47:17,362 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-29 22:47:17,362 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:47:17,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1412301778, now seen corresponding path program 10 times [2023-08-29 22:47:17,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 22:47:17,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [773495950] [2023-08-29 22:47:17,363 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-29 22:47:17,363 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:47:17,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 22:47:17,364 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 22:47:17,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2023-08-29 22:47:17,508 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-29 22:47:17,508 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 22:47:17,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-29 22:47:17,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:47:17,731 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-29 22:47:17,731 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 22:47:17,732 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 22:47:17,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [773495950] [2023-08-29 22:47:17,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [773495950] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:47:17,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:47:17,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-29 22:47:17,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398190406] [2023-08-29 22:47:17,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:47:17,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-29 22:47:17,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 22:47:17,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-29 22:47:17,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-08-29 22:47:18,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 302 out of 781 [2023-08-29 22:47:18,185 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 129 transitions, 1836 flow. Second operand has 8 states, 8 states have (on average 304.625) internal successors, (2437), 8 states have internal predecessors, (2437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:47:18,185 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:47:18,185 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 302 of 781 [2023-08-29 22:47:18,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:47:20,282 INFO L130 PetriNetUnfolder]: 6091/9667 cut-off events. [2023-08-29 22:47:20,282 INFO L131 PetriNetUnfolder]: For 81035/81035 co-relation queries the response was YES. [2023-08-29 22:47:20,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50085 conditions, 9667 events. 6091/9667 cut-off events. For 81035/81035 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 60492 event pairs, 3726 based on Foata normal form. 5/9672 useless extension candidates. Maximal degree in co-relation 50037. Up to 6118 conditions per place. [2023-08-29 22:47:20,341 INFO L137 encePairwiseOnDemand]: 772/781 looper letters, 162 selfloop transitions, 29 changer transitions 8/199 dead transitions. [2023-08-29 22:47:20,341 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 199 transitions, 2702 flow [2023-08-29 22:47:20,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 22:47:20,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 22:47:20,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2198 transitions. [2023-08-29 22:47:20,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4020486555697823 [2023-08-29 22:47:20,343 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2198 transitions. [2023-08-29 22:47:20,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2198 transitions. [2023-08-29 22:47:20,344 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:47:20,344 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2198 transitions. [2023-08-29 22:47:20,347 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 314.0) internal successors, (2198), 7 states have internal predecessors, (2198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:47:20,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:47:20,350 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:47:20,350 INFO L175 Difference]: Start difference. First operand has 113 places, 129 transitions, 1836 flow. Second operand 7 states and 2198 transitions. [2023-08-29 22:47:20,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 199 transitions, 2702 flow [2023-08-29 22:47:20,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 199 transitions, 2583 flow, removed 35 selfloop flow, removed 2 redundant places. [2023-08-29 22:47:20,463 INFO L231 Difference]: Finished difference. Result has 119 places, 131 transitions, 1849 flow [2023-08-29 22:47:20,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=1723, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1849, PETRI_PLACES=119, PETRI_TRANSITIONS=131} [2023-08-29 22:47:20,464 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 68 predicate places. [2023-08-29 22:47:20,464 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 131 transitions, 1849 flow [2023-08-29 22:47:20,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 304.625) internal successors, (2437), 8 states have internal predecessors, (2437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:47:20,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:47:20,465 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:47:20,475 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2023-08-29 22:47:20,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:47:20,673 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-29 22:47:20,673 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:47:20,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1005431846, now seen corresponding path program 11 times [2023-08-29 22:47:20,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 22:47:20,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1680812396] [2023-08-29 22:47:20,674 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-29 22:47:20,674 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:47:20,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 22:47:20,675 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 22:47:20,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2023-08-29 22:47:20,822 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-29 22:47:20,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 22:47:20,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-29 22:47:20,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:47:21,537 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-29 22:47:21,537 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 22:47:21,537 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 22:47:21,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1680812396] [2023-08-29 22:47:21,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1680812396] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:47:21,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:47:21,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-29 22:47:21,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708227396] [2023-08-29 22:47:21,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:47:21,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-29 22:47:21,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 22:47:21,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-29 22:47:21,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-08-29 22:47:22,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 781 [2023-08-29 22:47:22,506 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 131 transitions, 1849 flow. Second operand has 8 states, 8 states have (on average 303.625) internal successors, (2429), 8 states have internal predecessors, (2429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:47:22,506 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:47:22,506 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 781 [2023-08-29 22:47:22,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:47:25,291 INFO L130 PetriNetUnfolder]: 6097/9677 cut-off events. [2023-08-29 22:47:25,292 INFO L131 PetriNetUnfolder]: For 80010/80010 co-relation queries the response was YES. [2023-08-29 22:47:25,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50213 conditions, 9677 events. 6097/9677 cut-off events. For 80010/80010 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 60787 event pairs, 3744 based on Foata normal form. 5/9682 useless extension candidates. Maximal degree in co-relation 50163. Up to 6122 conditions per place. [2023-08-29 22:47:25,352 INFO L137 encePairwiseOnDemand]: 771/781 looper letters, 158 selfloop transitions, 53 changer transitions 9/220 dead transitions. [2023-08-29 22:47:25,352 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 220 transitions, 3026 flow [2023-08-29 22:47:25,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-29 22:47:25,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-29 22:47:25,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2500 transitions. [2023-08-29 22:47:25,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4001280409731114 [2023-08-29 22:47:25,354 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2500 transitions. [2023-08-29 22:47:25,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2500 transitions. [2023-08-29 22:47:25,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:47:25,355 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2500 transitions. [2023-08-29 22:47:25,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 312.5) internal successors, (2500), 8 states have internal predecessors, (2500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:47:25,359 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 781.0) internal successors, (7029), 9 states have internal predecessors, (7029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:47:25,360 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 781.0) internal successors, (7029), 9 states have internal predecessors, (7029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:47:25,360 INFO L175 Difference]: Start difference. First operand has 119 places, 131 transitions, 1849 flow. Second operand 8 states and 2500 transitions. [2023-08-29 22:47:25,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 220 transitions, 3026 flow [2023-08-29 22:47:25,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 220 transitions, 2943 flow, removed 13 selfloop flow, removed 4 redundant places. [2023-08-29 22:47:25,472 INFO L231 Difference]: Finished difference. Result has 126 places, 143 transitions, 2150 flow [2023-08-29 22:47:25,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=1794, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2150, PETRI_PLACES=126, PETRI_TRANSITIONS=143} [2023-08-29 22:47:25,472 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 75 predicate places. [2023-08-29 22:47:25,473 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 143 transitions, 2150 flow [2023-08-29 22:47:25,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 303.625) internal successors, (2429), 8 states have internal predecessors, (2429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:47:25,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:47:25,473 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:47:25,484 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2023-08-29 22:47:25,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:47:25,684 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-29 22:47:25,685 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:47:25,685 INFO L85 PathProgramCache]: Analyzing trace with hash 197282022, now seen corresponding path program 12 times [2023-08-29 22:47:25,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 22:47:25,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2125784523] [2023-08-29 22:47:25,685 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-29 22:47:25,685 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:47:25,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 22:47:25,686 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 22:47:25,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2023-08-29 22:47:25,822 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-08-29 22:47:25,823 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 22:47:25,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-29 22:47:25,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:47:26,170 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-29 22:47:26,170 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 22:47:26,171 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 22:47:26,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2125784523] [2023-08-29 22:47:26,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2125784523] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:47:26,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:47:26,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-29 22:47:26,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213916893] [2023-08-29 22:47:26,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:47:26,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-29 22:47:26,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 22:47:26,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-29 22:47:26,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-08-29 22:47:26,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 781 [2023-08-29 22:47:26,677 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 143 transitions, 2150 flow. Second operand has 8 states, 8 states have (on average 303.625) internal successors, (2429), 8 states have internal predecessors, (2429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:47:26,677 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:47:26,677 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 781 [2023-08-29 22:47:26,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:47:28,762 INFO L130 PetriNetUnfolder]: 6087/9655 cut-off events. [2023-08-29 22:47:28,762 INFO L131 PetriNetUnfolder]: For 91180/91180 co-relation queries the response was YES. [2023-08-29 22:47:28,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51754 conditions, 9655 events. 6087/9655 cut-off events. For 91180/91180 co-relation queries the response was YES. Maximal size of possible extension queue 420. Compared 60456 event pairs, 3758 based on Foata normal form. 5/9660 useless extension candidates. Maximal degree in co-relation 51700. Up to 6122 conditions per place. [2023-08-29 22:47:28,833 INFO L137 encePairwiseOnDemand]: 772/781 looper letters, 152 selfloop transitions, 58 changer transitions 8/218 dead transitions. [2023-08-29 22:47:28,833 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 218 transitions, 3193 flow [2023-08-29 22:47:28,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 22:47:28,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 22:47:28,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2197 transitions. [2023-08-29 22:47:28,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4018657398939089 [2023-08-29 22:47:28,835 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2197 transitions. [2023-08-29 22:47:28,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2197 transitions. [2023-08-29 22:47:28,836 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:47:28,836 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2197 transitions. [2023-08-29 22:47:28,837 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 313.85714285714283) internal successors, (2197), 7 states have internal predecessors, (2197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:47:28,840 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:47:28,841 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:47:28,841 INFO L175 Difference]: Start difference. First operand has 126 places, 143 transitions, 2150 flow. Second operand 7 states and 2197 transitions. [2023-08-29 22:47:28,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 218 transitions, 3193 flow [2023-08-29 22:47:28,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 218 transitions, 3101 flow, removed 22 selfloop flow, removed 3 redundant places. [2023-08-29 22:47:29,000 INFO L231 Difference]: Finished difference. Result has 132 places, 155 transitions, 2484 flow [2023-08-29 22:47:29,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=2076, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2484, PETRI_PLACES=132, PETRI_TRANSITIONS=155} [2023-08-29 22:47:29,000 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 81 predicate places. [2023-08-29 22:47:29,000 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 155 transitions, 2484 flow [2023-08-29 22:47:29,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 303.625) internal successors, (2429), 8 states have internal predecessors, (2429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:47:29,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:47:29,001 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:47:29,009 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2023-08-29 22:47:29,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:47:29,203 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-29 22:47:29,203 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:47:29,203 INFO L85 PathProgramCache]: Analyzing trace with hash -201991596, now seen corresponding path program 13 times [2023-08-29 22:47:29,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 22:47:29,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1081179561] [2023-08-29 22:47:29,204 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-29 22:47:29,204 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:47:29,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 22:47:29,204 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 22:47:29,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2023-08-29 22:47:29,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:47:29,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-29 22:47:29,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:47:29,774 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-29 22:47:29,774 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 22:47:29,774 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 22:47:29,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1081179561] [2023-08-29 22:47:29,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1081179561] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:47:29,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:47:29,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-29 22:47:29,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161113082] [2023-08-29 22:47:29,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:47:29,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-29 22:47:29,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 22:47:29,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-29 22:47:29,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-08-29 22:47:30,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 302 out of 781 [2023-08-29 22:47:30,326 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 155 transitions, 2484 flow. Second operand has 8 states, 8 states have (on average 304.625) internal successors, (2437), 8 states have internal predecessors, (2437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:47:30,326 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:47:30,326 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 302 of 781 [2023-08-29 22:47:30,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:47:32,475 INFO L130 PetriNetUnfolder]: 6077/9633 cut-off events. [2023-08-29 22:47:32,475 INFO L131 PetriNetUnfolder]: For 93094/93094 co-relation queries the response was YES. [2023-08-29 22:47:32,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52024 conditions, 9633 events. 6077/9633 cut-off events. For 93094/93094 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 60042 event pairs, 3754 based on Foata normal form. 5/9638 useless extension candidates. Maximal degree in co-relation 51967. Up to 6122 conditions per place. [2023-08-29 22:47:32,535 INFO L137 encePairwiseOnDemand]: 772/781 looper letters, 150 selfloop transitions, 58 changer transitions 8/216 dead transitions. [2023-08-29 22:47:32,535 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 216 transitions, 3301 flow [2023-08-29 22:47:32,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 22:47:32,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 22:47:32,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2202 transitions. [2023-08-29 22:47:32,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40278031827327604 [2023-08-29 22:47:32,538 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2202 transitions. [2023-08-29 22:47:32,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2202 transitions. [2023-08-29 22:47:32,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:47:32,538 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2202 transitions. [2023-08-29 22:47:32,546 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 314.57142857142856) internal successors, (2202), 7 states have internal predecessors, (2202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:47:32,549 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:47:32,549 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:47:32,549 INFO L175 Difference]: Start difference. First operand has 132 places, 155 transitions, 2484 flow. Second operand 7 states and 2202 transitions. [2023-08-29 22:47:32,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 216 transitions, 3301 flow [2023-08-29 22:47:32,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 216 transitions, 3205 flow, removed 23 selfloop flow, removed 3 redundant places. [2023-08-29 22:47:32,696 INFO L231 Difference]: Finished difference. Result has 137 places, 157 transitions, 2584 flow [2023-08-29 22:47:32,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=2387, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2584, PETRI_PLACES=137, PETRI_TRANSITIONS=157} [2023-08-29 22:47:32,697 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 86 predicate places. [2023-08-29 22:47:32,697 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 157 transitions, 2584 flow [2023-08-29 22:47:32,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 304.625) internal successors, (2437), 8 states have internal predecessors, (2437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:47:32,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:47:32,698 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:47:32,706 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2023-08-29 22:47:32,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:47:32,898 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-29 22:47:32,898 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:47:32,898 INFO L85 PathProgramCache]: Analyzing trace with hash -2090220844, now seen corresponding path program 14 times [2023-08-29 22:47:32,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 22:47:32,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1208713734] [2023-08-29 22:47:32,899 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 22:47:32,899 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:47:32,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 22:47:32,900 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 22:47:32,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2023-08-29 22:47:33,036 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-29 22:47:33,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 22:47:33,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-29 22:47:33,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:47:33,239 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-29 22:47:33,239 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 22:47:33,239 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 22:47:33,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1208713734] [2023-08-29 22:47:33,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1208713734] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:47:33,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:47:33,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-29 22:47:33,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374317740] [2023-08-29 22:47:33,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:47:33,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-29 22:47:33,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 22:47:33,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-29 22:47:33,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-08-29 22:47:33,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 781 [2023-08-29 22:47:33,687 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 157 transitions, 2584 flow. Second operand has 8 states, 8 states have (on average 305.625) internal successors, (2445), 8 states have internal predecessors, (2445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:47:33,687 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:47:33,688 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 781 [2023-08-29 22:47:33,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:47:35,704 INFO L130 PetriNetUnfolder]: 6067/9611 cut-off events. [2023-08-29 22:47:35,704 INFO L131 PetriNetUnfolder]: For 94294/94294 co-relation queries the response was YES. [2023-08-29 22:47:35,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52009 conditions, 9611 events. 6067/9611 cut-off events. For 94294/94294 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 59916 event pairs, 3738 based on Foata normal form. 5/9616 useless extension candidates. Maximal degree in co-relation 51950. Up to 6122 conditions per place. [2023-08-29 22:47:35,772 INFO L137 encePairwiseOnDemand]: 772/781 looper letters, 161 selfloop transitions, 55 changer transitions 8/224 dead transitions. [2023-08-29 22:47:35,772 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 224 transitions, 3420 flow [2023-08-29 22:47:35,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 22:47:35,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 22:47:35,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2207 transitions. [2023-08-29 22:47:35,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40369489665264313 [2023-08-29 22:47:35,775 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2207 transitions. [2023-08-29 22:47:35,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2207 transitions. [2023-08-29 22:47:35,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:47:35,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2207 transitions. [2023-08-29 22:47:35,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 315.2857142857143) internal successors, (2207), 7 states have internal predecessors, (2207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:47:35,779 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:47:35,780 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:47:35,780 INFO L175 Difference]: Start difference. First operand has 137 places, 157 transitions, 2584 flow. Second operand 7 states and 2207 transitions. [2023-08-29 22:47:35,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 224 transitions, 3420 flow [2023-08-29 22:47:35,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 224 transitions, 3316 flow, removed 8 selfloop flow, removed 4 redundant places. [2023-08-29 22:47:35,951 INFO L231 Difference]: Finished difference. Result has 140 places, 156 transitions, 2578 flow [2023-08-29 22:47:35,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=2462, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2578, PETRI_PLACES=140, PETRI_TRANSITIONS=156} [2023-08-29 22:47:35,952 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 89 predicate places. [2023-08-29 22:47:35,952 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 156 transitions, 2578 flow [2023-08-29 22:47:35,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 305.625) internal successors, (2445), 8 states have internal predecessors, (2445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:47:35,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:47:35,952 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:47:35,960 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 (37)] Ended with exit code 0 [2023-08-29 22:47:36,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:47:36,153 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-29 22:47:36,153 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:47:36,153 INFO L85 PathProgramCache]: Analyzing trace with hash -146850300, now seen corresponding path program 15 times [2023-08-29 22:47:36,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 22:47:36,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1398227827] [2023-08-29 22:47:36,154 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-29 22:47:36,154 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:47:36,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 22:47:36,155 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 22:47:36,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2023-08-29 22:47:36,292 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-29 22:47:36,292 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 22:47:36,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-29 22:47:36,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:47:36,630 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-29 22:47:36,630 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 22:47:36,630 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 22:47:36,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1398227827] [2023-08-29 22:47:36,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1398227827] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:47:36,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:47:36,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-29 22:47:36,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992865700] [2023-08-29 22:47:36,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:47:36,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-29 22:47:36,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 22:47:36,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-29 22:47:36,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-29 22:47:37,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 302 out of 781 [2023-08-29 22:47:37,077 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 156 transitions, 2578 flow. Second operand has 8 states, 8 states have (on average 304.625) internal successors, (2437), 8 states have internal predecessors, (2437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:47:37,077 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:47:37,077 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 302 of 781 [2023-08-29 22:47:37,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:47:39,204 INFO L130 PetriNetUnfolder]: 6057/9589 cut-off events. [2023-08-29 22:47:39,204 INFO L131 PetriNetUnfolder]: For 94816/94816 co-relation queries the response was YES. [2023-08-29 22:47:39,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51987 conditions, 9589 events. 6057/9589 cut-off events. For 94816/94816 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 59765 event pairs, 3746 based on Foata normal form. 5/9594 useless extension candidates. Maximal degree in co-relation 51927. Up to 6122 conditions per place. [2023-08-29 22:47:39,289 INFO L137 encePairwiseOnDemand]: 772/781 looper letters, 161 selfloop transitions, 51 changer transitions 8/220 dead transitions. [2023-08-29 22:47:39,289 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 220 transitions, 3389 flow [2023-08-29 22:47:39,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 22:47:39,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 22:47:39,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2201 transitions. [2023-08-29 22:47:39,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4025974025974026 [2023-08-29 22:47:39,291 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2201 transitions. [2023-08-29 22:47:39,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2201 transitions. [2023-08-29 22:47:39,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:47:39,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2201 transitions. [2023-08-29 22:47:39,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 314.42857142857144) internal successors, (2201), 7 states have internal predecessors, (2201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:47:39,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:47:39,296 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:47:39,296 INFO L175 Difference]: Start difference. First operand has 140 places, 156 transitions, 2578 flow. Second operand 7 states and 2201 transitions. [2023-08-29 22:47:39,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 220 transitions, 3389 flow [2023-08-29 22:47:39,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 220 transitions, 3273 flow, removed 12 selfloop flow, removed 4 redundant places. [2023-08-29 22:47:39,481 INFO L231 Difference]: Finished difference. Result has 142 places, 154 transitions, 2533 flow [2023-08-29 22:47:39,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=2449, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2533, PETRI_PLACES=142, PETRI_TRANSITIONS=154} [2023-08-29 22:47:39,482 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 91 predicate places. [2023-08-29 22:47:39,482 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 154 transitions, 2533 flow [2023-08-29 22:47:39,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 304.625) internal successors, (2437), 8 states have internal predecessors, (2437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:47:39,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:47:39,482 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:47:39,490 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2023-08-29 22:47:39,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:47:39,683 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-29 22:47:39,684 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:47:39,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1706802844, now seen corresponding path program 16 times [2023-08-29 22:47:39,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 22:47:39,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2011673297] [2023-08-29 22:47:39,684 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-29 22:47:39,684 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:47:39,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 22:47:39,685 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 22:47:39,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2023-08-29 22:47:39,839 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-29 22:47:39,839 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 22:47:39,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-29 22:47:39,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:47:40,049 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-29 22:47:40,049 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 22:47:40,049 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 22:47:40,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2011673297] [2023-08-29 22:47:40,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2011673297] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:47:40,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:47:40,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 22:47:40,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654739603] [2023-08-29 22:47:40,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:47:40,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 22:47:40,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 22:47:40,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 22:47:40,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-29 22:47:40,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 781 [2023-08-29 22:47:40,377 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 154 transitions, 2533 flow. Second operand has 6 states, 6 states have (on average 310.5) internal successors, (1863), 6 states have internal predecessors, (1863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:47:40,377 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:47:40,377 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 781 [2023-08-29 22:47:40,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:47:42,423 INFO L130 PetriNetUnfolder]: 6133/9730 cut-off events. [2023-08-29 22:47:42,423 INFO L131 PetriNetUnfolder]: For 95625/95625 co-relation queries the response was YES. [2023-08-29 22:47:42,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52794 conditions, 9730 events. 6133/9730 cut-off events. For 95625/95625 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 60690 event pairs, 3976 based on Foata normal form. 8/9738 useless extension candidates. Maximal degree in co-relation 52734. Up to 6742 conditions per place. [2023-08-29 22:47:42,485 INFO L137 encePairwiseOnDemand]: 774/781 looper letters, 123 selfloop transitions, 75 changer transitions 17/215 dead transitions. [2023-08-29 22:47:42,485 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 215 transitions, 3438 flow [2023-08-29 22:47:42,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 22:47:42,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 22:47:42,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1913 transitions. [2023-08-29 22:47:42,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4082373026034998 [2023-08-29 22:47:42,487 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1913 transitions. [2023-08-29 22:47:42,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1913 transitions. [2023-08-29 22:47:42,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:47:42,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1913 transitions. [2023-08-29 22:47:42,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 318.8333333333333) internal successors, (1913), 6 states have internal predecessors, (1913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:47:42,490 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 781.0) internal successors, (5467), 7 states have internal predecessors, (5467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:47:42,490 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 781.0) internal successors, (5467), 7 states have internal predecessors, (5467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:47:42,491 INFO L175 Difference]: Start difference. First operand has 142 places, 154 transitions, 2533 flow. Second operand 6 states and 1913 transitions. [2023-08-29 22:47:42,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 215 transitions, 3438 flow [2023-08-29 22:47:42,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 215 transitions, 3306 flow, removed 6 selfloop flow, removed 6 redundant places. [2023-08-29 22:47:42,654 INFO L231 Difference]: Finished difference. Result has 143 places, 160 transitions, 2726 flow [2023-08-29 22:47:42,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=2423, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2726, PETRI_PLACES=143, PETRI_TRANSITIONS=160} [2023-08-29 22:47:42,655 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 92 predicate places. [2023-08-29 22:47:42,655 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 160 transitions, 2726 flow [2023-08-29 22:47:42,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 310.5) internal successors, (1863), 6 states have internal predecessors, (1863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:47:42,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:47:42,655 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:47:42,664 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 (39)] Ended with exit code 0 [2023-08-29 22:47:42,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:47:42,857 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-29 22:47:42,857 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:47:42,857 INFO L85 PathProgramCache]: Analyzing trace with hash -323265574, now seen corresponding path program 17 times [2023-08-29 22:47:42,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 22:47:42,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1962231303] [2023-08-29 22:47:42,857 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-29 22:47:42,858 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:47:42,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 22:47:42,858 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 22:47:42,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2023-08-29 22:47:43,020 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-29 22:47:43,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 22:47:43,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-29 22:47:43,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:47:43,832 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-29 22:47:43,832 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 22:47:43,833 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 22:47:43,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1962231303] [2023-08-29 22:47:43,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1962231303] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:47:43,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:47:43,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-29 22:47:43,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514093502] [2023-08-29 22:47:43,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:47:43,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-29 22:47:43,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 22:47:43,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-29 22:47:43,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-08-29 22:47:44,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 781 [2023-08-29 22:47:44,873 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 160 transitions, 2726 flow. Second operand has 8 states, 8 states have (on average 303.625) internal successors, (2429), 8 states have internal predecessors, (2429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:47:44,874 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:47:44,874 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 781 [2023-08-29 22:47:44,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:47:47,523 INFO L130 PetriNetUnfolder]: 6164/9784 cut-off events. [2023-08-29 22:47:47,524 INFO L131 PetriNetUnfolder]: For 106116/106116 co-relation queries the response was YES. [2023-08-29 22:47:47,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54796 conditions, 9784 events. 6164/9784 cut-off events. For 106116/106116 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 61209 event pairs, 3934 based on Foata normal form. 5/9789 useless extension candidates. Maximal degree in co-relation 54736. Up to 6742 conditions per place. [2023-08-29 22:47:47,603 INFO L137 encePairwiseOnDemand]: 771/781 looper letters, 158 selfloop transitions, 70 changer transitions 9/237 dead transitions. [2023-08-29 22:47:47,603 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 237 transitions, 3815 flow [2023-08-29 22:47:47,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-29 22:47:47,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-29 22:47:47,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2498 transitions. [2023-08-29 22:47:47,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3998079385403329 [2023-08-29 22:47:47,606 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2498 transitions. [2023-08-29 22:47:47,606 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2498 transitions. [2023-08-29 22:47:47,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:47:47,607 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2498 transitions. [2023-08-29 22:47:47,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 312.25) internal successors, (2498), 8 states have internal predecessors, (2498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:47:47,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 781.0) internal successors, (7029), 9 states have internal predecessors, (7029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:47:47,611 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 781.0) internal successors, (7029), 9 states have internal predecessors, (7029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:47:47,611 INFO L175 Difference]: Start difference. First operand has 143 places, 160 transitions, 2726 flow. Second operand 8 states and 2498 transitions. [2023-08-29 22:47:47,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 237 transitions, 3815 flow [2023-08-29 22:47:47,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 237 transitions, 3710 flow, removed 26 selfloop flow, removed 3 redundant places. [2023-08-29 22:47:47,833 INFO L231 Difference]: Finished difference. Result has 151 places, 173 transitions, 3074 flow [2023-08-29 22:47:47,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=2637, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3074, PETRI_PLACES=151, PETRI_TRANSITIONS=173} [2023-08-29 22:47:47,834 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 100 predicate places. [2023-08-29 22:47:47,834 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 173 transitions, 3074 flow [2023-08-29 22:47:47,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 303.625) internal successors, (2429), 8 states have internal predecessors, (2429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:47:47,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:47:47,834 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:47:47,843 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Ended with exit code 0 [2023-08-29 22:47:48,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:47:48,035 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-29 22:47:48,035 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:47:48,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1452080456, now seen corresponding path program 18 times [2023-08-29 22:47:48,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 22:47:48,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [360250993] [2023-08-29 22:47:48,036 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-29 22:47:48,036 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:47:48,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 22:47:48,037 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 22:47:48,038 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2023-08-29 22:47:48,184 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-08-29 22:47:48,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 22:47:48,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-29 22:47:48,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:47:48,304 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-29 22:47:48,304 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 22:47:48,304 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 22:47:48,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [360250993] [2023-08-29 22:47:48,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [360250993] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:47:48,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:47:48,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 22:47:48,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998492550] [2023-08-29 22:47:48,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:47:48,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 22:47:48,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 22:47:48,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 22:47:48,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-29 22:47:48,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 781 [2023-08-29 22:47:48,524 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 173 transitions, 3074 flow. Second operand has 6 states, 6 states have (on average 310.5) internal successors, (1863), 6 states have internal predecessors, (1863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:47:48,524 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:47:48,524 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 781 [2023-08-29 22:47:48,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:47:50,548 INFO L130 PetriNetUnfolder]: 6158/9760 cut-off events. [2023-08-29 22:47:50,548 INFO L131 PetriNetUnfolder]: For 119220/119220 co-relation queries the response was YES. [2023-08-29 22:47:50,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56462 conditions, 9760 events. 6158/9760 cut-off events. For 119220/119220 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 60923 event pairs, 3912 based on Foata normal form. 7/9767 useless extension candidates. Maximal degree in co-relation 56399. Up to 6742 conditions per place. [2023-08-29 22:47:50,624 INFO L137 encePairwiseOnDemand]: 774/781 looper letters, 134 selfloop transitions, 81 changer transitions 21/236 dead transitions. [2023-08-29 22:47:50,624 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 236 transitions, 4113 flow [2023-08-29 22:47:50,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 22:47:50,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 22:47:50,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1910 transitions. [2023-08-29 22:47:50,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4075970977379428 [2023-08-29 22:47:50,626 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1910 transitions. [2023-08-29 22:47:50,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1910 transitions. [2023-08-29 22:47:50,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:47:50,627 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1910 transitions. [2023-08-29 22:47:50,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 318.3333333333333) internal successors, (1910), 6 states have internal predecessors, (1910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:47:50,630 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 781.0) internal successors, (5467), 7 states have internal predecessors, (5467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:47:50,630 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 781.0) internal successors, (5467), 7 states have internal predecessors, (5467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:47:50,630 INFO L175 Difference]: Start difference. First operand has 151 places, 173 transitions, 3074 flow. Second operand 6 states and 1910 transitions. [2023-08-29 22:47:50,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 236 transitions, 4113 flow [2023-08-29 22:47:50,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 236 transitions, 3934 flow, removed 37 selfloop flow, removed 3 redundant places. [2023-08-29 22:47:50,944 INFO L231 Difference]: Finished difference. Result has 156 places, 176 transitions, 3303 flow [2023-08-29 22:47:50,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=2909, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3303, PETRI_PLACES=156, PETRI_TRANSITIONS=176} [2023-08-29 22:47:50,945 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 105 predicate places. [2023-08-29 22:47:50,945 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 176 transitions, 3303 flow [2023-08-29 22:47:50,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 310.5) internal successors, (1863), 6 states have internal predecessors, (1863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:47:50,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:47:50,945 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:47:50,953 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 (41)] Forceful destruction successful, exit code 0 [2023-08-29 22:47:51,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:47:51,146 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-29 22:47:51,146 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:47:51,146 INFO L85 PathProgramCache]: Analyzing trace with hash 674202672, now seen corresponding path program 1 times [2023-08-29 22:47:51,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 22:47:51,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [178274256] [2023-08-29 22:47:51,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:47:51,147 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:47:51,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 22:47:51,147 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 22:47:51,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2023-08-29 22:47:51,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:47:51,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-29 22:47:51,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:47:51,494 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-29 22:47:51,494 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 22:47:51,494 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 22:47:51,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [178274256] [2023-08-29 22:47:51,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [178274256] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:47:51,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:47:51,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-29 22:47:51,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254155609] [2023-08-29 22:47:51,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:47:51,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 22:47:51,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 22:47:51,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 22:47:51,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-29 22:47:51,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 781 [2023-08-29 22:47:51,809 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 176 transitions, 3303 flow. Second operand has 7 states, 7 states have (on average 313.14285714285717) internal successors, (2192), 7 states have internal predecessors, (2192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:47:51,809 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:47:51,809 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 781 [2023-08-29 22:47:51,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:47:54,115 INFO L130 PetriNetUnfolder]: 7029/11106 cut-off events. [2023-08-29 22:47:54,116 INFO L131 PetriNetUnfolder]: For 141069/141069 co-relation queries the response was YES. [2023-08-29 22:47:54,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66963 conditions, 11106 events. 7029/11106 cut-off events. For 141069/141069 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 71413 event pairs, 740 based on Foata normal form. 24/11130 useless extension candidates. Maximal degree in co-relation 66897. Up to 5696 conditions per place. [2023-08-29 22:47:54,212 INFO L137 encePairwiseOnDemand]: 773/781 looper letters, 191 selfloop transitions, 63 changer transitions 1/255 dead transitions. [2023-08-29 22:47:54,212 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 255 transitions, 4402 flow [2023-08-29 22:47:54,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 22:47:54,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 22:47:54,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2252 transitions. [2023-08-29 22:47:54,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41192610206694713 [2023-08-29 22:47:54,215 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2252 transitions. [2023-08-29 22:47:54,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2252 transitions. [2023-08-29 22:47:54,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:47:54,215 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2252 transitions. [2023-08-29 22:47:54,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 321.7142857142857) internal successors, (2252), 7 states have internal predecessors, (2252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:47:54,220 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:47:54,221 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:47:54,221 INFO L175 Difference]: Start difference. First operand has 156 places, 176 transitions, 3303 flow. Second operand 7 states and 2252 transitions. [2023-08-29 22:47:54,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 255 transitions, 4402 flow [2023-08-29 22:47:54,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 255 transitions, 4269 flow, removed 41 selfloop flow, removed 4 redundant places. [2023-08-29 22:47:54,898 INFO L231 Difference]: Finished difference. Result has 159 places, 189 transitions, 3596 flow [2023-08-29 22:47:54,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=3212, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3596, PETRI_PLACES=159, PETRI_TRANSITIONS=189} [2023-08-29 22:47:54,898 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 108 predicate places. [2023-08-29 22:47:54,898 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 189 transitions, 3596 flow [2023-08-29 22:47:54,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 313.14285714285717) internal successors, (2192), 7 states have internal predecessors, (2192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:47:54,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:47:54,899 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:47:54,907 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 (42)] Ended with exit code 0 [2023-08-29 22:47:55,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:47:55,099 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-29 22:47:55,100 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:47:55,100 INFO L85 PathProgramCache]: Analyzing trace with hash 2080466478, now seen corresponding path program 2 times [2023-08-29 22:47:55,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 22:47:55,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [646839877] [2023-08-29 22:47:55,100 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 22:47:55,100 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:47:55,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 22:47:55,101 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 22:47:55,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2023-08-29 22:47:55,298 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-29 22:47:55,298 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 22:47:55,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-29 22:47:55,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:47:55,454 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-29 22:47:55,454 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 22:47:55,454 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 22:47:55,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [646839877] [2023-08-29 22:47:55,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [646839877] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:47:55,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:47:55,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-29 22:47:55,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075768807] [2023-08-29 22:47:55,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:47:55,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 22:47:55,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 22:47:55,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 22:47:55,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-29 22:47:55,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 312 out of 781 [2023-08-29 22:47:55,783 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 189 transitions, 3596 flow. Second operand has 7 states, 7 states have (on average 315.14285714285717) internal successors, (2206), 7 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:47:55,784 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:47:55,784 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 312 of 781 [2023-08-29 22:47:55,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:47:58,161 INFO L130 PetriNetUnfolder]: 7072/11223 cut-off events. [2023-08-29 22:47:58,161 INFO L131 PetriNetUnfolder]: For 131390/131390 co-relation queries the response was YES. [2023-08-29 22:47:58,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62770 conditions, 11223 events. 7072/11223 cut-off events. For 131390/131390 co-relation queries the response was YES. Maximal size of possible extension queue 513. Compared 72044 event pairs, 3978 based on Foata normal form. 6/11229 useless extension candidates. Maximal degree in co-relation 62703. Up to 6992 conditions per place. [2023-08-29 22:47:58,257 INFO L137 encePairwiseOnDemand]: 773/781 looper letters, 194 selfloop transitions, 90 changer transitions 8/292 dead transitions. [2023-08-29 22:47:58,257 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 292 transitions, 5413 flow [2023-08-29 22:47:58,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 22:47:58,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 22:47:58,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2267 transitions. [2023-08-29 22:47:58,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41466983720504846 [2023-08-29 22:47:58,259 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2267 transitions. [2023-08-29 22:47:58,259 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2267 transitions. [2023-08-29 22:47:58,260 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:47:58,260 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2267 transitions. [2023-08-29 22:47:58,261 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 323.85714285714283) internal successors, (2267), 7 states have internal predecessors, (2267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:47:58,264 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:47:58,264 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:47:58,264 INFO L175 Difference]: Start difference. First operand has 159 places, 189 transitions, 3596 flow. Second operand 7 states and 2267 transitions. [2023-08-29 22:47:58,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 292 transitions, 5413 flow [2023-08-29 22:47:58,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 292 transitions, 5315 flow, removed 14 selfloop flow, removed 1 redundant places. [2023-08-29 22:47:58,626 INFO L231 Difference]: Finished difference. Result has 169 places, 215 transitions, 4247 flow [2023-08-29 22:47:58,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=3517, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4247, PETRI_PLACES=169, PETRI_TRANSITIONS=215} [2023-08-29 22:47:58,627 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 118 predicate places. [2023-08-29 22:47:58,627 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 215 transitions, 4247 flow [2023-08-29 22:47:58,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 315.14285714285717) internal successors, (2206), 7 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:47:58,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:47:58,627 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:47:58,636 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 (43)] Forceful destruction successful, exit code 0 [2023-08-29 22:47:58,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:47:58,828 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-29 22:47:58,828 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:47:58,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1491371673, now seen corresponding path program 1 times [2023-08-29 22:47:58,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 22:47:58,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [563625106] [2023-08-29 22:47:58,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 22:47:58,829 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:47:58,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 22:47:58,829 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 22:47:58,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2023-08-29 22:47:59,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:47:59,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-29 22:47:59,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:47:59,142 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-29 22:47:59,143 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 22:47:59,341 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-29 22:47:59,342 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 22:47:59,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [563625106] [2023-08-29 22:47:59,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [563625106] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 22:47:59,342 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-29 22:47:59,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2023-08-29 22:47:59,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582673932] [2023-08-29 22:47:59,342 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-29 22:47:59,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-29 22:47:59,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 22:47:59,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-29 22:47:59,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-08-29 22:47:59,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 781 [2023-08-29 22:47:59,954 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 215 transitions, 4247 flow. Second operand has 10 states, 10 states have (on average 311.9) internal successors, (3119), 10 states have internal predecessors, (3119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:47:59,954 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:47:59,954 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 781 [2023-08-29 22:47:59,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:48:03,084 INFO L130 PetriNetUnfolder]: 8107/12918 cut-off events. [2023-08-29 22:48:03,084 INFO L131 PetriNetUnfolder]: For 148589/148589 co-relation queries the response was YES. [2023-08-29 22:48:03,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74926 conditions, 12918 events. 8107/12918 cut-off events. For 148589/148589 co-relation queries the response was YES. Maximal size of possible extension queue 601. Compared 86033 event pairs, 1990 based on Foata normal form. 30/12948 useless extension candidates. Maximal degree in co-relation 74853. Up to 6392 conditions per place. [2023-08-29 22:48:03,188 INFO L137 encePairwiseOnDemand]: 773/781 looper letters, 229 selfloop transitions, 86 changer transitions 4/319 dead transitions. [2023-08-29 22:48:03,188 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 319 transitions, 6050 flow [2023-08-29 22:48:03,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 22:48:03,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 22:48:03,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2248 transitions. [2023-08-29 22:48:03,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41119443936345346 [2023-08-29 22:48:03,190 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2248 transitions. [2023-08-29 22:48:03,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2248 transitions. [2023-08-29 22:48:03,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:48:03,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2248 transitions. [2023-08-29 22:48:03,192 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 321.14285714285717) internal successors, (2248), 7 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:48:03,194 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:48:03,195 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:48:03,195 INFO L175 Difference]: Start difference. First operand has 169 places, 215 transitions, 4247 flow. Second operand 7 states and 2248 transitions. [2023-08-29 22:48:03,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 319 transitions, 6050 flow [2023-08-29 22:48:03,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 319 transitions, 5887 flow, removed 45 selfloop flow, removed 2 redundant places. [2023-08-29 22:48:03,771 INFO L231 Difference]: Finished difference. Result has 176 places, 228 transitions, 4606 flow [2023-08-29 22:48:03,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=4094, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4606, PETRI_PLACES=176, PETRI_TRANSITIONS=228} [2023-08-29 22:48:03,772 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 125 predicate places. [2023-08-29 22:48:03,772 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 228 transitions, 4606 flow [2023-08-29 22:48:03,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 311.9) internal successors, (3119), 10 states have internal predecessors, (3119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:48:03,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:48:03,773 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:48:03,783 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 (44)] Forceful destruction successful, exit code 0 [2023-08-29 22:48:03,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:48:03,973 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-29 22:48:03,973 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:48:03,973 INFO L85 PathProgramCache]: Analyzing trace with hash 405127479, now seen corresponding path program 2 times [2023-08-29 22:48:03,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 22:48:03,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [49097933] [2023-08-29 22:48:03,974 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 22:48:03,974 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:48:03,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 22:48:03,975 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 22:48:03,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2023-08-29 22:48:04,187 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-29 22:48:04,187 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 22:48:04,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-29 22:48:04,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:48:04,299 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-29 22:48:04,299 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 22:48:04,539 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-29 22:48:04,539 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 22:48:04,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [49097933] [2023-08-29 22:48:04,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [49097933] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-29 22:48:04,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-29 22:48:04,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 10 [2023-08-29 22:48:04,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701492174] [2023-08-29 22:48:04,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:48:04,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 22:48:04,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 22:48:04,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 22:48:04,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-08-29 22:48:05,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 781 [2023-08-29 22:48:05,146 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 228 transitions, 4606 flow. Second operand has 7 states, 7 states have (on average 317.14285714285717) internal successors, (2220), 7 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:48:05,146 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:48:05,146 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 781 [2023-08-29 22:48:05,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:48:08,471 INFO L130 PetriNetUnfolder]: 8731/14082 cut-off events. [2023-08-29 22:48:08,471 INFO L131 PetriNetUnfolder]: For 193024/193024 co-relation queries the response was YES. [2023-08-29 22:48:08,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81491 conditions, 14082 events. 8731/14082 cut-off events. For 193024/193024 co-relation queries the response was YES. Maximal size of possible extension queue 677. Compared 96910 event pairs, 4090 based on Foata normal form. 30/14112 useless extension candidates. Maximal degree in co-relation 81415. Up to 7130 conditions per place. [2023-08-29 22:48:08,619 INFO L137 encePairwiseOnDemand]: 773/781 looper letters, 243 selfloop transitions, 69 changer transitions 0/312 dead transitions. [2023-08-29 22:48:08,619 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 312 transitions, 5939 flow [2023-08-29 22:48:08,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 22:48:08,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 22:48:08,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2289 transitions. [2023-08-29 22:48:08,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4186939820742638 [2023-08-29 22:48:08,622 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2289 transitions. [2023-08-29 22:48:08,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2289 transitions. [2023-08-29 22:48:08,622 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:48:08,623 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2289 transitions. [2023-08-29 22:48:08,625 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 327.0) internal successors, (2289), 7 states have internal predecessors, (2289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:48:08,627 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:48:08,628 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:48:08,628 INFO L175 Difference]: Start difference. First operand has 176 places, 228 transitions, 4606 flow. Second operand 7 states and 2289 transitions. [2023-08-29 22:48:08,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 312 transitions, 5939 flow [2023-08-29 22:48:09,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 312 transitions, 5808 flow, removed 20 selfloop flow, removed 2 redundant places. [2023-08-29 22:48:09,389 INFO L231 Difference]: Finished difference. Result has 182 places, 230 transitions, 4693 flow [2023-08-29 22:48:09,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=4475, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4693, PETRI_PLACES=182, PETRI_TRANSITIONS=230} [2023-08-29 22:48:09,390 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 131 predicate places. [2023-08-29 22:48:09,390 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 230 transitions, 4693 flow [2023-08-29 22:48:09,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 317.14285714285717) internal successors, (2220), 7 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:48:09,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:48:09,390 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:48:09,398 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (45)] Ended with exit code 0 [2023-08-29 22:48:09,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:48:09,591 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-29 22:48:09,591 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:48:09,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1490800363, now seen corresponding path program 3 times [2023-08-29 22:48:09,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 22:48:09,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1870967441] [2023-08-29 22:48:09,591 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-29 22:48:09,592 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:48:09,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 22:48:09,592 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 22:48:09,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2023-08-29 22:48:09,795 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-29 22:48:09,796 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 22:48:09,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-29 22:48:09,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:48:09,988 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-29 22:48:09,988 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 22:48:10,438 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-29 22:48:10,438 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 22:48:10,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1870967441] [2023-08-29 22:48:10,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1870967441] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-29 22:48:10,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-29 22:48:10,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 11 [2023-08-29 22:48:10,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414347377] [2023-08-29 22:48:10,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:48:10,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 22:48:10,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 22:48:10,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 22:48:10,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2023-08-29 22:48:11,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 781 [2023-08-29 22:48:11,136 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 230 transitions, 4693 flow. Second operand has 7 states, 7 states have (on average 316.14285714285717) internal successors, (2213), 7 states have internal predecessors, (2213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:48:11,136 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:48:11,136 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 781 [2023-08-29 22:48:11,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:48:15,241 INFO L130 PetriNetUnfolder]: 10365/16928 cut-off events. [2023-08-29 22:48:15,241 INFO L131 PetriNetUnfolder]: For 232343/232343 co-relation queries the response was YES. [2023-08-29 22:48:15,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98023 conditions, 16928 events. 10365/16928 cut-off events. For 232343/232343 co-relation queries the response was YES. Maximal size of possible extension queue 838. Compared 122900 event pairs, 4820 based on Foata normal form. 30/16958 useless extension candidates. Maximal degree in co-relation 97945. Up to 7286 conditions per place. [2023-08-29 22:48:15,407 INFO L137 encePairwiseOnDemand]: 773/781 looper letters, 262 selfloop transitions, 88 changer transitions 0/350 dead transitions. [2023-08-29 22:48:15,407 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 350 transitions, 6856 flow [2023-08-29 22:48:15,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 22:48:15,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 22:48:15,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2289 transitions. [2023-08-29 22:48:15,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4186939820742638 [2023-08-29 22:48:15,410 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2289 transitions. [2023-08-29 22:48:15,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2289 transitions. [2023-08-29 22:48:15,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:48:15,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2289 transitions. [2023-08-29 22:48:15,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 327.0) internal successors, (2289), 7 states have internal predecessors, (2289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:48:15,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:48:15,415 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:48:15,415 INFO L175 Difference]: Start difference. First operand has 182 places, 230 transitions, 4693 flow. Second operand 7 states and 2289 transitions. [2023-08-29 22:48:15,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 350 transitions, 6856 flow [2023-08-29 22:48:16,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 350 transitions, 6690 flow, removed 7 selfloop flow, removed 4 redundant places. [2023-08-29 22:48:16,302 INFO L231 Difference]: Finished difference. Result has 187 places, 241 transitions, 5010 flow [2023-08-29 22:48:16,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=4545, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5010, PETRI_PLACES=187, PETRI_TRANSITIONS=241} [2023-08-29 22:48:16,303 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 136 predicate places. [2023-08-29 22:48:16,303 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 241 transitions, 5010 flow [2023-08-29 22:48:16,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 316.14285714285717) internal successors, (2213), 7 states have internal predecessors, (2213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:48:16,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:48:16,303 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:48:16,312 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 (46)] Forceful destruction successful, exit code 0 [2023-08-29 22:48:16,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:48:16,504 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-29 22:48:16,504 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:48:16,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1563120182, now seen corresponding path program 3 times [2023-08-29 22:48:16,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 22:48:16,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [42098414] [2023-08-29 22:48:16,505 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-29 22:48:16,505 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:48:16,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 22:48:16,506 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 22:48:16,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2023-08-29 22:48:16,707 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-29 22:48:16,707 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 22:48:16,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-29 22:48:16,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:48:16,850 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-29 22:48:16,850 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 22:48:16,851 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 22:48:16,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [42098414] [2023-08-29 22:48:16,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [42098414] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:48:16,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:48:16,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-29 22:48:16,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740364958] [2023-08-29 22:48:16,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:48:16,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 22:48:16,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 22:48:16,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 22:48:16,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-29 22:48:17,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 781 [2023-08-29 22:48:17,215 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 241 transitions, 5010 flow. Second operand has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:48:17,215 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:48:17,215 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 781 [2023-08-29 22:48:17,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:48:20,988 INFO L130 PetriNetUnfolder]: 10427/17056 cut-off events. [2023-08-29 22:48:20,988 INFO L131 PetriNetUnfolder]: For 244490/244490 co-relation queries the response was YES. [2023-08-29 22:48:21,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99040 conditions, 17056 events. 10427/17056 cut-off events. For 244490/244490 co-relation queries the response was YES. Maximal size of possible extension queue 849. Compared 123742 event pairs, 5112 based on Foata normal form. 24/17080 useless extension candidates. Maximal degree in co-relation 98959. Up to 7576 conditions per place. [2023-08-29 22:48:21,169 INFO L137 encePairwiseOnDemand]: 773/781 looper letters, 230 selfloop transitions, 80 changer transitions 0/310 dead transitions. [2023-08-29 22:48:21,169 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 310 transitions, 6124 flow [2023-08-29 22:48:21,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 22:48:21,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 22:48:21,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2251 transitions. [2023-08-29 22:48:21,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4117431863910737 [2023-08-29 22:48:21,171 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2251 transitions. [2023-08-29 22:48:21,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2251 transitions. [2023-08-29 22:48:21,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:48:21,171 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2251 transitions. [2023-08-29 22:48:21,172 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 321.57142857142856) internal successors, (2251), 7 states have internal predecessors, (2251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:48:21,175 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:48:21,175 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:48:21,175 INFO L175 Difference]: Start difference. First operand has 187 places, 241 transitions, 5010 flow. Second operand 7 states and 2251 transitions. [2023-08-29 22:48:21,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 310 transitions, 6124 flow [2023-08-29 22:48:22,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 310 transitions, 5896 flow, removed 31 selfloop flow, removed 3 redundant places. [2023-08-29 22:48:22,037 INFO L231 Difference]: Finished difference. Result has 193 places, 245 transitions, 5094 flow [2023-08-29 22:48:22,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=4784, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5094, PETRI_PLACES=193, PETRI_TRANSITIONS=245} [2023-08-29 22:48:22,038 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 142 predicate places. [2023-08-29 22:48:22,038 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 245 transitions, 5094 flow [2023-08-29 22:48:22,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:48:22,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:48:22,038 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:48:22,047 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 (47)] Ended with exit code 0 [2023-08-29 22:48:22,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:48:22,239 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-29 22:48:22,239 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:48:22,239 INFO L85 PathProgramCache]: Analyzing trace with hash -994494395, now seen corresponding path program 4 times [2023-08-29 22:48:22,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 22:48:22,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [294138127] [2023-08-29 22:48:22,240 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-29 22:48:22,240 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:48:22,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 22:48:22,240 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 22:48:22,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2023-08-29 22:48:22,408 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-29 22:48:22,408 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 22:48:22,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-29 22:48:22,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:48:22,586 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-29 22:48:22,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 22:48:22,945 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-29 22:48:22,945 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 22:48:22,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [294138127] [2023-08-29 22:48:22,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [294138127] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-29 22:48:22,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-29 22:48:22,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 11 [2023-08-29 22:48:22,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298947700] [2023-08-29 22:48:22,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:48:22,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 22:48:22,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 22:48:22,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 22:48:22,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-08-29 22:48:23,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 781 [2023-08-29 22:48:23,573 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 245 transitions, 5094 flow. Second operand has 7 states, 7 states have (on average 317.14285714285717) internal successors, (2220), 7 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:48:23,573 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:48:23,573 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 781 [2023-08-29 22:48:23,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:48:27,744 INFO L130 PetriNetUnfolder]: 10513/17228 cut-off events. [2023-08-29 22:48:27,744 INFO L131 PetriNetUnfolder]: For 247812/247812 co-relation queries the response was YES. [2023-08-29 22:48:27,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99805 conditions, 17228 events. 10513/17228 cut-off events. For 247812/247812 co-relation queries the response was YES. Maximal size of possible extension queue 869. Compared 125641 event pairs, 4904 based on Foata normal form. 30/17258 useless extension candidates. Maximal degree in co-relation 99721. Up to 7286 conditions per place. [2023-08-29 22:48:27,879 INFO L137 encePairwiseOnDemand]: 773/781 looper letters, 247 selfloop transitions, 77 changer transitions 0/324 dead transitions. [2023-08-29 22:48:27,879 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 324 transitions, 6353 flow [2023-08-29 22:48:27,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 22:48:27,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 22:48:27,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2286 transitions. [2023-08-29 22:48:27,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41814523504664347 [2023-08-29 22:48:27,881 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2286 transitions. [2023-08-29 22:48:27,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2286 transitions. [2023-08-29 22:48:27,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:48:27,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2286 transitions. [2023-08-29 22:48:27,883 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 326.57142857142856) internal successors, (2286), 7 states have internal predecessors, (2286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:48:27,885 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:48:27,885 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:48:27,885 INFO L175 Difference]: Start difference. First operand has 193 places, 245 transitions, 5094 flow. Second operand 7 states and 2286 transitions. [2023-08-29 22:48:27,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 324 transitions, 6353 flow [2023-08-29 22:48:28,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 324 transitions, 6211 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-08-29 22:48:28,737 INFO L231 Difference]: Finished difference. Result has 198 places, 249 transitions, 5199 flow [2023-08-29 22:48:28,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=4952, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5199, PETRI_PLACES=198, PETRI_TRANSITIONS=249} [2023-08-29 22:48:28,737 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 147 predicate places. [2023-08-29 22:48:28,737 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 249 transitions, 5199 flow [2023-08-29 22:48:28,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 317.14285714285717) internal successors, (2220), 7 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:48:28,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:48:28,738 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:48:28,746 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 (48)] Forceful destruction successful, exit code 0 [2023-08-29 22:48:28,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:48:28,938 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-29 22:48:28,938 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:48:28,939 INFO L85 PathProgramCache]: Analyzing trace with hash 587823331, now seen corresponding path program 5 times [2023-08-29 22:48:28,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 22:48:28,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [906304670] [2023-08-29 22:48:28,939 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-29 22:48:28,939 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:48:28,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 22:48:28,940 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 22:48:28,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2023-08-29 22:48:29,122 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-29 22:48:29,122 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 22:48:29,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-29 22:48:29,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:48:29,245 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-29 22:48:29,245 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 22:48:29,246 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 22:48:29,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [906304670] [2023-08-29 22:48:29,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [906304670] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:48:29,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:48:29,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-29 22:48:29,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671279904] [2023-08-29 22:48:29,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:48:29,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 22:48:29,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 22:48:29,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 22:48:29,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-29 22:48:29,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 781 [2023-08-29 22:48:29,562 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 249 transitions, 5199 flow. Second operand has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:48:29,562 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:48:29,562 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 781 [2023-08-29 22:48:29,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:48:33,864 INFO L130 PetriNetUnfolder]: 10495/17174 cut-off events. [2023-08-29 22:48:33,865 INFO L131 PetriNetUnfolder]: For 251925/251925 co-relation queries the response was YES. [2023-08-29 22:48:33,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101145 conditions, 17174 events. 10495/17174 cut-off events. For 251925/251925 co-relation queries the response was YES. Maximal size of possible extension queue 865. Compared 124965 event pairs, 5134 based on Foata normal form. 4/17178 useless extension candidates. Maximal degree in co-relation 101059. Up to 7694 conditions per place. [2023-08-29 22:48:34,042 INFO L137 encePairwiseOnDemand]: 773/781 looper letters, 223 selfloop transitions, 79 changer transitions 4/306 dead transitions. [2023-08-29 22:48:34,043 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 306 transitions, 6136 flow [2023-08-29 22:48:34,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 22:48:34,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 22:48:34,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2244 transitions. [2023-08-29 22:48:34,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4104627766599598 [2023-08-29 22:48:34,047 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2244 transitions. [2023-08-29 22:48:34,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2244 transitions. [2023-08-29 22:48:34,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:48:34,048 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2244 transitions. [2023-08-29 22:48:34,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 320.57142857142856) internal successors, (2244), 7 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:48:34,053 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:48:34,053 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:48:34,053 INFO L175 Difference]: Start difference. First operand has 198 places, 249 transitions, 5199 flow. Second operand 7 states and 2244 transitions. [2023-08-29 22:48:34,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 306 transitions, 6136 flow [2023-08-29 22:48:35,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 306 transitions, 6030 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-08-29 22:48:35,182 INFO L231 Difference]: Finished difference. Result has 203 places, 248 transitions, 5230 flow [2023-08-29 22:48:35,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=5066, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5230, PETRI_PLACES=203, PETRI_TRANSITIONS=248} [2023-08-29 22:48:35,183 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 152 predicate places. [2023-08-29 22:48:35,183 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 248 transitions, 5230 flow [2023-08-29 22:48:35,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:48:35,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:48:35,183 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:48:35,193 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2023-08-29 22:48:35,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:48:35,384 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-29 22:48:35,384 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:48:35,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1869999354, now seen corresponding path program 4 times [2023-08-29 22:48:35,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 22:48:35,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1894054011] [2023-08-29 22:48:35,385 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-29 22:48:35,385 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:48:35,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 22:48:35,386 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 22:48:35,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2023-08-29 22:48:35,555 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-29 22:48:35,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 22:48:35,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-29 22:48:35,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:48:35,681 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-29 22:48:35,681 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 22:48:35,681 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 22:48:35,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1894054011] [2023-08-29 22:48:35,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1894054011] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:48:35,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:48:35,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-29 22:48:35,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909010351] [2023-08-29 22:48:35,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:48:35,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 22:48:35,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 22:48:35,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 22:48:35,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-29 22:48:36,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 781 [2023-08-29 22:48:36,042 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 248 transitions, 5230 flow. Second operand has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:48:36,042 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:48:36,042 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 781 [2023-08-29 22:48:36,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:48:40,231 INFO L130 PetriNetUnfolder]: 10462/17095 cut-off events. [2023-08-29 22:48:40,231 INFO L131 PetriNetUnfolder]: For 250089/250089 co-relation queries the response was YES. [2023-08-29 22:48:40,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101418 conditions, 17095 events. 10462/17095 cut-off events. For 250089/250089 co-relation queries the response was YES. Maximal size of possible extension queue 856. Compared 123832 event pairs, 5124 based on Foata normal form. 6/17101 useless extension candidates. Maximal degree in co-relation 101331. Up to 7694 conditions per place. [2023-08-29 22:48:40,506 INFO L137 encePairwiseOnDemand]: 773/781 looper letters, 220 selfloop transitions, 78 changer transitions 6/304 dead transitions. [2023-08-29 22:48:40,506 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 304 transitions, 6125 flow [2023-08-29 22:48:40,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 22:48:40,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 22:48:40,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2243 transitions. [2023-08-29 22:48:40,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4102798609840863 [2023-08-29 22:48:40,509 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2243 transitions. [2023-08-29 22:48:40,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2243 transitions. [2023-08-29 22:48:40,509 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:48:40,510 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2243 transitions. [2023-08-29 22:48:40,511 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 320.42857142857144) internal successors, (2243), 7 states have internal predecessors, (2243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:48:40,514 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:48:40,515 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:48:40,515 INFO L175 Difference]: Start difference. First operand has 203 places, 248 transitions, 5230 flow. Second operand 7 states and 2243 transitions. [2023-08-29 22:48:40,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 304 transitions, 6125 flow [2023-08-29 22:48:41,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 304 transitions, 5926 flow, removed 7 selfloop flow, removed 6 redundant places. [2023-08-29 22:48:41,359 INFO L231 Difference]: Finished difference. Result has 202 places, 246 transitions, 5134 flow [2023-08-29 22:48:41,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=4992, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5134, PETRI_PLACES=202, PETRI_TRANSITIONS=246} [2023-08-29 22:48:41,359 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 151 predicate places. [2023-08-29 22:48:41,359 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 246 transitions, 5134 flow [2023-08-29 22:48:41,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:48:41,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:48:41,360 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:48:41,370 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2023-08-29 22:48:41,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:48:41,560 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-29 22:48:41,560 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:48:41,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1440117096, now seen corresponding path program 5 times [2023-08-29 22:48:41,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 22:48:41,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [788894787] [2023-08-29 22:48:41,561 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-29 22:48:41,561 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:48:41,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 22:48:41,562 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 22:48:41,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2023-08-29 22:48:41,749 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-29 22:48:41,749 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 22:48:41,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-29 22:48:41,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:48:41,853 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-29 22:48:41,853 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 22:48:42,046 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-29 22:48:42,046 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 22:48:42,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [788894787] [2023-08-29 22:48:42,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [788894787] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-29 22:48:42,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-29 22:48:42,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 10 [2023-08-29 22:48:42,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98841557] [2023-08-29 22:48:42,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:48:42,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 22:48:42,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 22:48:42,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 22:48:42,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-08-29 22:48:42,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 781 [2023-08-29 22:48:42,668 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 246 transitions, 5134 flow. Second operand has 7 states, 7 states have (on average 316.14285714285717) internal successors, (2213), 7 states have internal predecessors, (2213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:48:42,668 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:48:42,669 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 781 [2023-08-29 22:48:42,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:48:47,725 INFO L130 PetriNetUnfolder]: 12785/20900 cut-off events. [2023-08-29 22:48:47,725 INFO L131 PetriNetUnfolder]: For 257018/257018 co-relation queries the response was YES. [2023-08-29 22:48:47,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119578 conditions, 20900 events. 12785/20900 cut-off events. For 257018/257018 co-relation queries the response was YES. Maximal size of possible extension queue 1049. Compared 156877 event pairs, 2257 based on Foata normal form. 24/20924 useless extension candidates. Maximal degree in co-relation 119491. Up to 9992 conditions per place. [2023-08-29 22:48:48,006 INFO L137 encePairwiseOnDemand]: 773/781 looper letters, 254 selfloop transitions, 79 changer transitions 2/335 dead transitions. [2023-08-29 22:48:48,006 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 335 transitions, 6705 flow [2023-08-29 22:48:48,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 22:48:48,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 22:48:48,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2268 transitions. [2023-08-29 22:48:48,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4148527528809219 [2023-08-29 22:48:48,009 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2268 transitions. [2023-08-29 22:48:48,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2268 transitions. [2023-08-29 22:48:48,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:48:48,009 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2268 transitions. [2023-08-29 22:48:48,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 324.0) internal successors, (2268), 7 states have internal predecessors, (2268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:48:48,014 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:48:48,014 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:48:48,014 INFO L175 Difference]: Start difference. First operand has 202 places, 246 transitions, 5134 flow. Second operand 7 states and 2268 transitions. [2023-08-29 22:48:48,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 335 transitions, 6705 flow [2023-08-29 22:48:49,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 335 transitions, 6495 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-08-29 22:48:49,615 INFO L231 Difference]: Finished difference. Result has 206 places, 261 transitions, 5496 flow [2023-08-29 22:48:49,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=4976, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5496, PETRI_PLACES=206, PETRI_TRANSITIONS=261} [2023-08-29 22:48:49,615 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 155 predicate places. [2023-08-29 22:48:49,615 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 261 transitions, 5496 flow [2023-08-29 22:48:49,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 316.14285714285717) internal successors, (2213), 7 states have internal predecessors, (2213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:48:49,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:48:49,616 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:48:49,625 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (51)] Forceful destruction successful, exit code 0 [2023-08-29 22:48:49,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:48:49,816 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-29 22:48:49,817 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:48:49,817 INFO L85 PathProgramCache]: Analyzing trace with hash 838455036, now seen corresponding path program 6 times [2023-08-29 22:48:49,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 22:48:49,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1669620644] [2023-08-29 22:48:49,817 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-29 22:48:49,817 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:48:49,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 22:48:49,819 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 22:48:49,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2023-08-29 22:48:50,055 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-29 22:48:50,055 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 22:48:50,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-29 22:48:50,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:48:50,165 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-29 22:48:50,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 22:48:50,383 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-29 22:48:50,383 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 22:48:50,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1669620644] [2023-08-29 22:48:50,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1669620644] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-29 22:48:50,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-29 22:48:50,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 10 [2023-08-29 22:48:50,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258754577] [2023-08-29 22:48:50,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:48:50,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 22:48:50,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 22:48:50,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 22:48:50,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-08-29 22:48:50,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 781 [2023-08-29 22:48:50,987 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 261 transitions, 5496 flow. Second operand has 7 states, 7 states have (on average 317.14285714285717) internal successors, (2220), 7 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:48:50,987 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:48:50,987 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 781 [2023-08-29 22:48:50,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:48:56,832 INFO L130 PetriNetUnfolder]: 14313/23706 cut-off events. [2023-08-29 22:48:56,833 INFO L131 PetriNetUnfolder]: For 309674/309674 co-relation queries the response was YES. [2023-08-29 22:48:57,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132778 conditions, 23706 events. 14313/23706 cut-off events. For 309674/309674 co-relation queries the response was YES. Maximal size of possible extension queue 1219. Compared 185446 event pairs, 4870 based on Foata normal form. 24/23730 useless extension candidates. Maximal degree in co-relation 132687. Up to 9894 conditions per place. [2023-08-29 22:48:57,120 INFO L137 encePairwiseOnDemand]: 773/781 looper letters, 239 selfloop transitions, 97 changer transitions 0/336 dead transitions. [2023-08-29 22:48:57,120 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 336 transitions, 6722 flow [2023-08-29 22:48:57,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 22:48:57,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 22:48:57,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2283 transitions. [2023-08-29 22:48:57,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4175964880190232 [2023-08-29 22:48:57,123 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2283 transitions. [2023-08-29 22:48:57,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2283 transitions. [2023-08-29 22:48:57,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:48:57,123 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2283 transitions. [2023-08-29 22:48:57,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 326.14285714285717) internal successors, (2283), 7 states have internal predecessors, (2283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:48:57,127 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:48:57,127 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:48:57,128 INFO L175 Difference]: Start difference. First operand has 206 places, 261 transitions, 5496 flow. Second operand 7 states and 2283 transitions. [2023-08-29 22:48:57,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 336 transitions, 6722 flow [2023-08-29 22:48:58,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 336 transitions, 6604 flow, removed 21 selfloop flow, removed 2 redundant places. [2023-08-29 22:48:58,889 INFO L231 Difference]: Finished difference. Result has 212 places, 263 transitions, 5650 flow [2023-08-29 22:48:58,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=5378, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5650, PETRI_PLACES=212, PETRI_TRANSITIONS=263} [2023-08-29 22:48:58,889 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 161 predicate places. [2023-08-29 22:48:58,889 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 263 transitions, 5650 flow [2023-08-29 22:48:58,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 317.14285714285717) internal successors, (2220), 7 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:48:58,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:48:58,890 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:48:58,899 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 (52)] Forceful destruction successful, exit code 0 [2023-08-29 22:48:59,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:48:59,091 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-29 22:48:59,091 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:48:59,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1141561250, now seen corresponding path program 7 times [2023-08-29 22:48:59,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 22:48:59,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [158183549] [2023-08-29 22:48:59,091 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-29 22:48:59,092 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:48:59,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 22:48:59,092 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 22:48:59,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2023-08-29 22:48:59,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:48:59,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-29 22:48:59,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:48:59,565 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-29 22:48:59,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 22:48:59,937 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-29 22:48:59,937 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 22:48:59,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [158183549] [2023-08-29 22:48:59,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [158183549] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-29 22:48:59,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-29 22:48:59,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 11 [2023-08-29 22:48:59,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975669370] [2023-08-29 22:48:59,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:48:59,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 22:48:59,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 22:48:59,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 22:48:59,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2023-08-29 22:49:00,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 781 [2023-08-29 22:49:00,844 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 263 transitions, 5650 flow. Second operand has 7 states, 7 states have (on average 316.14285714285717) internal successors, (2213), 7 states have internal predecessors, (2213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:49:00,845 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:49:00,845 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 781 [2023-08-29 22:49:00,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:49:08,601 INFO L130 PetriNetUnfolder]: 18381/30672 cut-off events. [2023-08-29 22:49:08,601 INFO L131 PetriNetUnfolder]: For 365214/365214 co-relation queries the response was YES. [2023-08-29 22:49:08,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167290 conditions, 30672 events. 18381/30672 cut-off events. For 365214/365214 co-relation queries the response was YES. Maximal size of possible extension queue 1633. Compared 252872 event pairs, 6866 based on Foata normal form. 24/30696 useless extension candidates. Maximal degree in co-relation 167197. Up to 10619 conditions per place. [2023-08-29 22:49:09,087 INFO L137 encePairwiseOnDemand]: 773/781 looper letters, 265 selfloop transitions, 97 changer transitions 0/362 dead transitions. [2023-08-29 22:49:09,088 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 362 transitions, 7356 flow [2023-08-29 22:49:09,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 22:49:09,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 22:49:09,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2281 transitions. [2023-08-29 22:49:09,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4172306566672764 [2023-08-29 22:49:09,090 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2281 transitions. [2023-08-29 22:49:09,090 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2281 transitions. [2023-08-29 22:49:09,091 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:49:09,091 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2281 transitions. [2023-08-29 22:49:09,093 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 325.85714285714283) internal successors, (2281), 7 states have internal predecessors, (2281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:49:09,096 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:49:09,097 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:49:09,097 INFO L175 Difference]: Start difference. First operand has 212 places, 263 transitions, 5650 flow. Second operand 7 states and 2281 transitions. [2023-08-29 22:49:09,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 362 transitions, 7356 flow [2023-08-29 22:49:11,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 362 transitions, 7140 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-08-29 22:49:11,176 INFO L231 Difference]: Finished difference. Result has 217 places, 275 transitions, 5936 flow [2023-08-29 22:49:11,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=5454, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5936, PETRI_PLACES=217, PETRI_TRANSITIONS=275} [2023-08-29 22:49:11,176 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 166 predicate places. [2023-08-29 22:49:11,177 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 275 transitions, 5936 flow [2023-08-29 22:49:11,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 316.14285714285717) internal successors, (2213), 7 states have internal predecessors, (2213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:49:11,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:49:11,177 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:49:11,188 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 (53)] Ended with exit code 0 [2023-08-29 22:49:11,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:49:11,384 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-29 22:49:11,384 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:49:11,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1730321531, now seen corresponding path program 6 times [2023-08-29 22:49:11,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 22:49:11,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [332342505] [2023-08-29 22:49:11,384 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-29 22:49:11,384 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:49:11,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 22:49:11,385 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 22:49:11,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2023-08-29 22:49:11,673 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-29 22:49:11,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 22:49:11,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-29 22:49:11,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:49:11,811 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-29 22:49:11,811 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 22:49:11,811 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 22:49:11,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [332342505] [2023-08-29 22:49:11,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [332342505] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:49:11,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:49:11,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-29 22:49:11,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762983700] [2023-08-29 22:49:11,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:49:11,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 22:49:11,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 22:49:11,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 22:49:11,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-29 22:49:12,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 781 [2023-08-29 22:49:12,276 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 275 transitions, 5936 flow. Second operand has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:49:12,276 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:49:12,276 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 781 [2023-08-29 22:49:12,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:49:19,960 INFO L130 PetriNetUnfolder]: 18337/30592 cut-off events. [2023-08-29 22:49:19,960 INFO L131 PetriNetUnfolder]: For 382343/382343 co-relation queries the response was YES. [2023-08-29 22:49:20,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167245 conditions, 30592 events. 18337/30592 cut-off events. For 382343/382343 co-relation queries the response was YES. Maximal size of possible extension queue 1623. Compared 251737 event pairs, 7128 based on Foata normal form. 30/30622 useless extension candidates. Maximal degree in co-relation 167149. Up to 19038 conditions per place. [2023-08-29 22:49:20,401 INFO L137 encePairwiseOnDemand]: 773/781 looper letters, 229 selfloop transitions, 108 changer transitions 0/337 dead transitions. [2023-08-29 22:49:20,401 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 337 transitions, 7005 flow [2023-08-29 22:49:20,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 22:49:20,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 22:49:20,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2246 transitions. [2023-08-29 22:49:20,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4108286080117066 [2023-08-29 22:49:20,403 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2246 transitions. [2023-08-29 22:49:20,403 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2246 transitions. [2023-08-29 22:49:20,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:49:20,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2246 transitions. [2023-08-29 22:49:20,404 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 320.85714285714283) internal successors, (2246), 7 states have internal predecessors, (2246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:49:20,407 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:49:20,407 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:49:20,407 INFO L175 Difference]: Start difference. First operand has 217 places, 275 transitions, 5936 flow. Second operand 7 states and 2246 transitions. [2023-08-29 22:49:20,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 337 transitions, 7005 flow [2023-08-29 22:49:22,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 337 transitions, 6841 flow, removed 30 selfloop flow, removed 2 redundant places. [2023-08-29 22:49:22,638 INFO L231 Difference]: Finished difference. Result has 222 places, 276 transitions, 6035 flow [2023-08-29 22:49:22,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=5773, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6035, PETRI_PLACES=222, PETRI_TRANSITIONS=276} [2023-08-29 22:49:22,638 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 171 predicate places. [2023-08-29 22:49:22,639 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 276 transitions, 6035 flow [2023-08-29 22:49:22,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:49:22,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:49:22,639 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:49:22,649 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (54)] Forceful destruction successful, exit code 0 [2023-08-29 22:49:22,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:49:22,849 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-29 22:49:22,849 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:49:22,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1467737416, now seen corresponding path program 8 times [2023-08-29 22:49:22,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 22:49:22,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [391787346] [2023-08-29 22:49:22,850 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 22:49:22,850 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:49:22,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 22:49:22,851 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 22:49:22,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2023-08-29 22:49:23,071 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-29 22:49:23,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 22:49:23,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-29 22:49:23,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:49:23,195 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-29 22:49:23,195 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 22:49:23,195 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 22:49:23,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [391787346] [2023-08-29 22:49:23,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [391787346] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:49:23,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:49:23,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-29 22:49:23,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58562643] [2023-08-29 22:49:23,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:49:23,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 22:49:23,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 22:49:23,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 22:49:23,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-29 22:49:23,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 781 [2023-08-29 22:49:23,563 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 276 transitions, 6035 flow. Second operand has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:49:23,563 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:49:23,563 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 781 [2023-08-29 22:49:23,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:49:30,975 INFO L130 PetriNetUnfolder]: 18313/30568 cut-off events. [2023-08-29 22:49:30,975 INFO L131 PetriNetUnfolder]: For 380764/380764 co-relation queries the response was YES. [2023-08-29 22:49:31,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167114 conditions, 30568 events. 18313/30568 cut-off events. For 380764/380764 co-relation queries the response was YES. Maximal size of possible extension queue 1627. Compared 251852 event pairs, 7074 based on Foata normal form. 24/30592 useless extension candidates. Maximal degree in co-relation 167017. Up to 18900 conditions per place. [2023-08-29 22:49:31,527 INFO L137 encePairwiseOnDemand]: 773/781 looper letters, 231 selfloop transitions, 109 changer transitions 0/340 dead transitions. [2023-08-29 22:49:31,527 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 340 transitions, 7101 flow [2023-08-29 22:49:31,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 22:49:31,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 22:49:31,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2248 transitions. [2023-08-29 22:49:31,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41119443936345346 [2023-08-29 22:49:31,529 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2248 transitions. [2023-08-29 22:49:31,529 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2248 transitions. [2023-08-29 22:49:31,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:49:31,529 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2248 transitions. [2023-08-29 22:49:31,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 321.14285714285717) internal successors, (2248), 7 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:49:31,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:49:31,533 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:49:31,533 INFO L175 Difference]: Start difference. First operand has 222 places, 276 transitions, 6035 flow. Second operand 7 states and 2248 transitions. [2023-08-29 22:49:31,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 340 transitions, 7101 flow [2023-08-29 22:49:33,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 340 transitions, 6953 flow, removed 7 selfloop flow, removed 4 redundant places. [2023-08-29 22:49:33,546 INFO L231 Difference]: Finished difference. Result has 225 places, 277 transitions, 6137 flow [2023-08-29 22:49:33,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=5887, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6137, PETRI_PLACES=225, PETRI_TRANSITIONS=277} [2023-08-29 22:49:33,546 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 174 predicate places. [2023-08-29 22:49:33,546 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 277 transitions, 6137 flow [2023-08-29 22:49:33,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:49:33,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:49:33,547 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:49:33,557 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (55)] Forceful destruction successful, exit code 0 [2023-08-29 22:49:33,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:49:33,751 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-29 22:49:33,751 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:49:33,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1890379816, now seen corresponding path program 9 times [2023-08-29 22:49:33,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 22:49:33,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1672214146] [2023-08-29 22:49:33,752 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-29 22:49:33,752 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:49:33,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 22:49:33,753 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 22:49:33,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2023-08-29 22:49:33,967 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-29 22:49:33,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 22:49:33,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-29 22:49:33,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:49:34,184 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-29 22:49:34,184 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 22:49:34,185 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 22:49:34,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1672214146] [2023-08-29 22:49:34,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1672214146] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:49:34,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:49:34,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-29 22:49:34,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783912838] [2023-08-29 22:49:34,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:49:34,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 22:49:34,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 22:49:34,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 22:49:34,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-29 22:49:34,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 781 [2023-08-29 22:49:34,491 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 277 transitions, 6137 flow. Second operand has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:49:34,492 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:49:34,492 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 781 [2023-08-29 22:49:34,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:49:41,888 INFO L130 PetriNetUnfolder]: 18283/30496 cut-off events. [2023-08-29 22:49:41,888 INFO L131 PetriNetUnfolder]: For 395272/395272 co-relation queries the response was YES. [2023-08-29 22:49:42,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166981 conditions, 30496 events. 18283/30496 cut-off events. For 395272/395272 co-relation queries the response was YES. Maximal size of possible extension queue 1617. Compared 250751 event pairs, 7086 based on Foata normal form. 6/30502 useless extension candidates. Maximal degree in co-relation 166883. Up to 18942 conditions per place. [2023-08-29 22:49:42,468 INFO L137 encePairwiseOnDemand]: 773/781 looper letters, 219 selfloop transitions, 107 changer transitions 6/332 dead transitions. [2023-08-29 22:49:42,468 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 332 transitions, 7097 flow [2023-08-29 22:49:42,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 22:49:42,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 22:49:42,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2241 transitions. [2023-08-29 22:49:42,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40991402963233947 [2023-08-29 22:49:42,470 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2241 transitions. [2023-08-29 22:49:42,470 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2241 transitions. [2023-08-29 22:49:42,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:49:42,470 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2241 transitions. [2023-08-29 22:49:42,471 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 320.14285714285717) internal successors, (2241), 7 states have internal predecessors, (2241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:49:42,473 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:49:42,474 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:49:42,474 INFO L175 Difference]: Start difference. First operand has 225 places, 277 transitions, 6137 flow. Second operand 7 states and 2241 transitions. [2023-08-29 22:49:42,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 332 transitions, 7097 flow [2023-08-29 22:49:44,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 332 transitions, 6879 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-08-29 22:49:44,612 INFO L231 Difference]: Finished difference. Result has 227 places, 276 transitions, 6103 flow [2023-08-29 22:49:44,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=5884, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6103, PETRI_PLACES=227, PETRI_TRANSITIONS=276} [2023-08-29 22:49:44,613 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 176 predicate places. [2023-08-29 22:49:44,613 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 276 transitions, 6103 flow [2023-08-29 22:49:44,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:49:44,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:49:44,613 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:49:44,622 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 (56)] Ended with exit code 0 [2023-08-29 22:49:44,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:49:44,814 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-29 22:49:44,814 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:49:44,814 INFO L85 PathProgramCache]: Analyzing trace with hash -993453291, now seen corresponding path program 7 times [2023-08-29 22:49:44,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 22:49:44,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [600207269] [2023-08-29 22:49:44,815 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-29 22:49:44,815 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:49:44,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 22:49:44,816 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 22:49:44,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2023-08-29 22:49:45,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:49:45,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-29 22:49:45,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:49:45,358 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-29 22:49:45,359 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 22:49:45,914 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-29 22:49:45,915 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 22:49:45,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [600207269] [2023-08-29 22:49:45,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [600207269] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 22:49:45,915 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-29 22:49:45,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-08-29 22:49:45,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780266889] [2023-08-29 22:49:45,915 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-29 22:49:45,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-29 22:49:45,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 22:49:45,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-29 22:49:45,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-08-29 22:49:46,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 306 out of 781 [2023-08-29 22:49:46,856 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 276 transitions, 6103 flow. Second operand has 12 states, 12 states have (on average 308.4166666666667) internal successors, (3701), 12 states have internal predecessors, (3701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:49:46,856 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:49:46,856 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 306 of 781 [2023-08-29 22:49:46,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:49:54,851 INFO L130 PetriNetUnfolder]: 18524/30887 cut-off events. [2023-08-29 22:49:54,852 INFO L131 PetriNetUnfolder]: For 418329/418329 co-relation queries the response was YES. [2023-08-29 22:49:55,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170312 conditions, 30887 events. 18524/30887 cut-off events. For 418329/418329 co-relation queries the response was YES. Maximal size of possible extension queue 1638. Compared 254919 event pairs, 7992 based on Foata normal form. 12/30899 useless extension candidates. Maximal degree in co-relation 170213. Up to 10083 conditions per place. [2023-08-29 22:49:55,477 INFO L137 encePairwiseOnDemand]: 773/781 looper letters, 264 selfloop transitions, 117 changer transitions 0/381 dead transitions. [2023-08-29 22:49:55,477 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 381 transitions, 8176 flow [2023-08-29 22:49:55,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 22:49:55,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 22:49:55,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2239 transitions. [2023-08-29 22:49:55,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40954819828059263 [2023-08-29 22:49:55,480 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2239 transitions. [2023-08-29 22:49:55,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2239 transitions. [2023-08-29 22:49:55,480 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:49:55,480 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2239 transitions. [2023-08-29 22:49:55,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 319.85714285714283) internal successors, (2239), 7 states have internal predecessors, (2239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:49:55,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:49:55,486 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:49:55,486 INFO L175 Difference]: Start difference. First operand has 227 places, 276 transitions, 6103 flow. Second operand 7 states and 2239 transitions. [2023-08-29 22:49:55,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 381 transitions, 8176 flow [2023-08-29 22:49:57,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 381 transitions, 7934 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-08-29 22:49:57,525 INFO L231 Difference]: Finished difference. Result has 230 places, 286 transitions, 6476 flow [2023-08-29 22:49:57,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=5879, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6476, PETRI_PLACES=230, PETRI_TRANSITIONS=286} [2023-08-29 22:49:57,525 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 179 predicate places. [2023-08-29 22:49:57,526 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 286 transitions, 6476 flow [2023-08-29 22:49:57,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 308.4166666666667) internal successors, (3701), 12 states have internal predecessors, (3701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:49:57,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:49:57,527 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:49:57,536 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 (57)] Ended with exit code 0 [2023-08-29 22:49:57,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:49:57,731 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-29 22:49:57,731 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:49:57,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1990034639, now seen corresponding path program 8 times [2023-08-29 22:49:57,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 22:49:57,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [167698997] [2023-08-29 22:49:57,732 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 22:49:57,732 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:49:57,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 22:49:57,733 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 22:49:57,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (58)] Waiting until timeout for monitored process [2023-08-29 22:49:57,951 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-29 22:49:57,951 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 22:49:57,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-29 22:49:57,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:49:58,172 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-29 22:49:58,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 22:49:58,664 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-29 22:49:58,664 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 22:49:58,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [167698997] [2023-08-29 22:49:58,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [167698997] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-29 22:49:58,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-29 22:49:58,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2023-08-29 22:49:58,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125122544] [2023-08-29 22:49:58,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:49:58,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 22:49:58,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 22:49:58,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 22:49:58,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-08-29 22:49:59,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 781 [2023-08-29 22:49:59,621 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 286 transitions, 6476 flow. Second operand has 7 states, 7 states have (on average 316.14285714285717) internal successors, (2213), 7 states have internal predecessors, (2213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:49:59,621 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:49:59,621 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 781 [2023-08-29 22:49:59,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:50:07,942 INFO L130 PetriNetUnfolder]: 18480/30807 cut-off events. [2023-08-29 22:50:07,942 INFO L131 PetriNetUnfolder]: For 424393/424393 co-relation queries the response was YES. [2023-08-29 22:50:08,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170129 conditions, 30807 events. 18480/30807 cut-off events. For 424393/424393 co-relation queries the response was YES. Maximal size of possible extension queue 1633. Compared 254033 event pairs, 7966 based on Foata normal form. 30/30837 useless extension candidates. Maximal degree in co-relation 170027. Up to 10083 conditions per place. [2023-08-29 22:50:08,401 INFO L137 encePairwiseOnDemand]: 773/781 looper letters, 265 selfloop transitions, 115 changer transitions 0/380 dead transitions. [2023-08-29 22:50:08,401 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 380 transitions, 8237 flow [2023-08-29 22:50:08,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 22:50:08,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 22:50:08,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2288 transitions. [2023-08-29 22:50:08,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41851106639839036 [2023-08-29 22:50:08,403 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2288 transitions. [2023-08-29 22:50:08,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2288 transitions. [2023-08-29 22:50:08,404 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:50:08,404 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2288 transitions. [2023-08-29 22:50:08,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 326.85714285714283) internal successors, (2288), 7 states have internal predecessors, (2288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:50:08,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:50:08,408 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:50:08,408 INFO L175 Difference]: Start difference. First operand has 230 places, 286 transitions, 6476 flow. Second operand 7 states and 2288 transitions. [2023-08-29 22:50:08,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 380 transitions, 8237 flow [2023-08-29 22:50:10,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 380 transitions, 8011 flow, removed 31 selfloop flow, removed 3 redundant places. [2023-08-29 22:50:10,510 INFO L231 Difference]: Finished difference. Result has 234 places, 286 transitions, 6489 flow [2023-08-29 22:50:10,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=6225, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6489, PETRI_PLACES=234, PETRI_TRANSITIONS=286} [2023-08-29 22:50:10,510 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 183 predicate places. [2023-08-29 22:50:10,510 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 286 transitions, 6489 flow [2023-08-29 22:50:10,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 316.14285714285717) internal successors, (2213), 7 states have internal predecessors, (2213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:50:10,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:50:10,511 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:50:10,519 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 (58)] Forceful destruction successful, exit code 0 [2023-08-29 22:50:10,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:50:10,711 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-29 22:50:10,711 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:50:10,712 INFO L85 PathProgramCache]: Analyzing trace with hash -723778866, now seen corresponding path program 10 times [2023-08-29 22:50:10,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 22:50:10,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1717403182] [2023-08-29 22:50:10,712 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-29 22:50:10,712 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:50:10,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 22:50:10,713 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 22:50:10,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (59)] Waiting until timeout for monitored process [2023-08-29 22:50:10,900 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-29 22:50:10,900 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 22:50:10,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-29 22:50:10,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:50:11,182 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-29 22:50:11,182 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 22:50:11,182 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 22:50:11,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1717403182] [2023-08-29 22:50:11,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1717403182] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:50:11,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:50:11,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-29 22:50:11,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277158951] [2023-08-29 22:50:11,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:50:11,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 22:50:11,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 22:50:11,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 22:50:11,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-29 22:50:11,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 781 [2023-08-29 22:50:11,703 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 286 transitions, 6489 flow. Second operand has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:50:11,703 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:50:11,703 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 781 [2023-08-29 22:50:11,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:50:19,299 INFO L130 PetriNetUnfolder]: 18456/30783 cut-off events. [2023-08-29 22:50:19,299 INFO L131 PetriNetUnfolder]: For 422323/422323 co-relation queries the response was YES. [2023-08-29 22:50:19,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170158 conditions, 30783 events. 18456/30783 cut-off events. For 422323/422323 co-relation queries the response was YES. Maximal size of possible extension queue 1633. Compared 251898 event pairs, 10238 based on Foata normal form. 24/30807 useless extension candidates. Maximal degree in co-relation 170055. Up to 20461 conditions per place. [2023-08-29 22:50:19,866 INFO L137 encePairwiseOnDemand]: 773/781 looper letters, 255 selfloop transitions, 116 changer transitions 0/371 dead transitions. [2023-08-29 22:50:19,866 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 371 transitions, 8057 flow [2023-08-29 22:50:19,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 22:50:19,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 22:50:19,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2255 transitions. [2023-08-29 22:50:19,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4124748490945674 [2023-08-29 22:50:19,868 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2255 transitions. [2023-08-29 22:50:19,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2255 transitions. [2023-08-29 22:50:19,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:50:19,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2255 transitions. [2023-08-29 22:50:19,869 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 322.14285714285717) internal successors, (2255), 7 states have internal predecessors, (2255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:50:19,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:50:19,872 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:50:19,872 INFO L175 Difference]: Start difference. First operand has 234 places, 286 transitions, 6489 flow. Second operand 7 states and 2255 transitions. [2023-08-29 22:50:19,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 371 transitions, 8057 flow [2023-08-29 22:50:21,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 371 transitions, 7888 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-29 22:50:21,874 INFO L231 Difference]: Finished difference. Result has 238 places, 287 transitions, 6581 flow [2023-08-29 22:50:21,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=6322, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6581, PETRI_PLACES=238, PETRI_TRANSITIONS=287} [2023-08-29 22:50:21,875 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 187 predicate places. [2023-08-29 22:50:21,875 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 287 transitions, 6581 flow [2023-08-29 22:50:21,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:50:21,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:50:21,875 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:50:21,883 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (59)] Ended with exit code 0 [2023-08-29 22:50:22,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:50:22,076 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-29 22:50:22,076 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:50:22,076 INFO L85 PathProgramCache]: Analyzing trace with hash 650497544, now seen corresponding path program 11 times [2023-08-29 22:50:22,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 22:50:22,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1948862133] [2023-08-29 22:50:22,077 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-29 22:50:22,077 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:50:22,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 22:50:22,078 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 22:50:22,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (60)] Waiting until timeout for monitored process [2023-08-29 22:50:22,279 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-29 22:50:22,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 22:50:22,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-29 22:50:22,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:50:22,421 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-29 22:50:22,421 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 22:50:22,421 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 22:50:22,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1948862133] [2023-08-29 22:50:22,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1948862133] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:50:22,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:50:22,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-29 22:50:22,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837244455] [2023-08-29 22:50:22,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:50:22,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 22:50:22,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 22:50:22,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 22:50:22,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-29 22:50:22,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 312 out of 781 [2023-08-29 22:50:22,768 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 287 transitions, 6581 flow. Second operand has 7 states, 7 states have (on average 315.14285714285717) internal successors, (2206), 7 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:50:22,768 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:50:22,768 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 312 of 781 [2023-08-29 22:50:22,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:50:31,363 INFO L130 PetriNetUnfolder]: 18619/31230 cut-off events. [2023-08-29 22:50:31,363 INFO L131 PetriNetUnfolder]: For 437351/437351 co-relation queries the response was YES. [2023-08-29 22:50:31,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172760 conditions, 31230 events. 18619/31230 cut-off events. For 437351/437351 co-relation queries the response was YES. Maximal size of possible extension queue 1669. Compared 258691 event pairs, 10228 based on Foata normal form. 6/31236 useless extension candidates. Maximal degree in co-relation 172656. Up to 20461 conditions per place. [2023-08-29 22:50:31,931 INFO L137 encePairwiseOnDemand]: 773/781 looper letters, 249 selfloop transitions, 122 changer transitions 8/379 dead transitions. [2023-08-29 22:50:31,931 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 379 transitions, 8375 flow [2023-08-29 22:50:31,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 22:50:31,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 22:50:31,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2271 transitions. [2023-08-29 22:50:31,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41540149990854214 [2023-08-29 22:50:31,933 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2271 transitions. [2023-08-29 22:50:31,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2271 transitions. [2023-08-29 22:50:31,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:50:31,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2271 transitions. [2023-08-29 22:50:31,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 324.42857142857144) internal successors, (2271), 7 states have internal predecessors, (2271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:50:31,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:50:31,937 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:50:31,938 INFO L175 Difference]: Start difference. First operand has 238 places, 287 transitions, 6581 flow. Second operand 7 states and 2271 transitions. [2023-08-29 22:50:31,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 379 transitions, 8375 flow [2023-08-29 22:50:34,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 379 transitions, 8111 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-08-29 22:50:34,093 INFO L231 Difference]: Finished difference. Result has 243 places, 302 transitions, 6963 flow [2023-08-29 22:50:34,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=6343, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6963, PETRI_PLACES=243, PETRI_TRANSITIONS=302} [2023-08-29 22:50:34,094 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 192 predicate places. [2023-08-29 22:50:34,094 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 302 transitions, 6963 flow [2023-08-29 22:50:34,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 315.14285714285717) internal successors, (2206), 7 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:50:34,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:50:34,094 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:50:34,109 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 (60)] Forceful destruction successful, exit code 0 [2023-08-29 22:50:34,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:50:34,305 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-29 22:50:34,306 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:50:34,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1845528386, now seen corresponding path program 12 times [2023-08-29 22:50:34,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 22:50:34,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2042445772] [2023-08-29 22:50:34,306 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-29 22:50:34,306 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:50:34,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 22:50:34,307 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 22:50:34,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (61)] Waiting until timeout for monitored process [2023-08-29 22:50:34,572 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-29 22:50:34,572 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 22:50:34,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-29 22:50:34,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:50:34,824 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-29 22:50:34,824 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 22:50:34,824 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 22:50:34,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2042445772] [2023-08-29 22:50:34,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2042445772] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:50:34,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:50:34,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-29 22:50:34,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92343794] [2023-08-29 22:50:34,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:50:34,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 22:50:34,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 22:50:34,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 22:50:34,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-29 22:50:35,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 312 out of 781 [2023-08-29 22:50:35,207 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 302 transitions, 6963 flow. Second operand has 7 states, 7 states have (on average 315.14285714285717) internal successors, (2206), 7 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:50:35,207 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:50:35,207 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 312 of 781 [2023-08-29 22:50:35,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:50:43,197 INFO L130 PetriNetUnfolder]: 18584/31147 cut-off events. [2023-08-29 22:50:43,197 INFO L131 PetriNetUnfolder]: For 445838/445838 co-relation queries the response was YES. [2023-08-29 22:50:43,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174008 conditions, 31147 events. 18584/31147 cut-off events. For 445838/445838 co-relation queries the response was YES. Maximal size of possible extension queue 1667. Compared 257513 event pairs, 10254 based on Foata normal form. 6/31153 useless extension candidates. Maximal degree in co-relation 173910. Up to 20461 conditions per place. [2023-08-29 22:50:43,927 INFO L137 encePairwiseOnDemand]: 773/781 looper letters, 252 selfloop transitions, 127 changer transitions 8/387 dead transitions. [2023-08-29 22:50:43,927 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 387 transitions, 8536 flow [2023-08-29 22:50:43,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 22:50:43,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 22:50:43,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2275 transitions. [2023-08-29 22:50:43,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41613316261203587 [2023-08-29 22:50:43,929 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2275 transitions. [2023-08-29 22:50:43,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2275 transitions. [2023-08-29 22:50:43,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:50:43,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2275 transitions. [2023-08-29 22:50:43,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 325.0) internal successors, (2275), 7 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:50:43,934 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:50:43,935 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:50:43,935 INFO L175 Difference]: Start difference. First operand has 243 places, 302 transitions, 6963 flow. Second operand 7 states and 2275 transitions. [2023-08-29 22:50:43,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 387 transitions, 8536 flow [2023-08-29 22:50:46,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 387 transitions, 8358 flow, removed 13 selfloop flow, removed 2 redundant places. [2023-08-29 22:50:46,407 INFO L231 Difference]: Finished difference. Result has 247 places, 303 transitions, 7057 flow [2023-08-29 22:50:46,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=6748, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7057, PETRI_PLACES=247, PETRI_TRANSITIONS=303} [2023-08-29 22:50:46,410 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 196 predicate places. [2023-08-29 22:50:46,410 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 303 transitions, 7057 flow [2023-08-29 22:50:46,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 315.14285714285717) internal successors, (2206), 7 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:50:46,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:50:46,410 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:50:46,420 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 (61)] Ended with exit code 0 [2023-08-29 22:50:46,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:50:46,617 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-29 22:50:46,617 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:50:46,617 INFO L85 PathProgramCache]: Analyzing trace with hash -2086489685, now seen corresponding path program 9 times [2023-08-29 22:50:46,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 22:50:46,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1768248757] [2023-08-29 22:50:46,618 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-29 22:50:46,618 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:50:46,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 22:50:46,618 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 22:50:46,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (62)] Waiting until timeout for monitored process [2023-08-29 22:50:46,848 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-29 22:50:46,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 22:50:46,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-29 22:50:46,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:50:46,975 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-29 22:50:46,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 22:50:47,222 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-29 22:50:47,223 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 22:50:47,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1768248757] [2023-08-29 22:50:47,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1768248757] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-29 22:50:47,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-29 22:50:47,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 11 [2023-08-29 22:50:47,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934494869] [2023-08-29 22:50:47,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:50:47,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 22:50:47,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 22:50:47,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 22:50:47,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-08-29 22:50:48,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 781 [2023-08-29 22:50:48,029 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 303 transitions, 7057 flow. Second operand has 7 states, 7 states have (on average 316.14285714285717) internal successors, (2213), 7 states have internal predecessors, (2213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:50:48,029 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:50:48,029 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 781 [2023-08-29 22:50:48,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:50:56,763 INFO L130 PetriNetUnfolder]: 19529/32958 cut-off events. [2023-08-29 22:50:56,763 INFO L131 PetriNetUnfolder]: For 465205/465205 co-relation queries the response was YES. [2023-08-29 22:50:57,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182057 conditions, 32958 events. 19529/32958 cut-off events. For 465205/465205 co-relation queries the response was YES. Maximal size of possible extension queue 1781. Compared 279546 event pairs, 7542 based on Foata normal form. 30/32988 useless extension candidates. Maximal degree in co-relation 181958. Up to 10083 conditions per place. [2023-08-29 22:50:57,634 INFO L137 encePairwiseOnDemand]: 773/781 looper letters, 304 selfloop transitions, 112 changer transitions 0/416 dead transitions. [2023-08-29 22:50:57,634 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 416 transitions, 9254 flow [2023-08-29 22:50:57,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 22:50:57,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 22:50:57,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2287 transitions. [2023-08-29 22:50:57,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41832815072251694 [2023-08-29 22:50:57,636 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2287 transitions. [2023-08-29 22:50:57,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2287 transitions. [2023-08-29 22:50:57,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:50:57,636 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2287 transitions. [2023-08-29 22:50:57,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 326.7142857142857) internal successors, (2287), 7 states have internal predecessors, (2287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:50:57,640 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:50:57,640 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:50:57,640 INFO L175 Difference]: Start difference. First operand has 247 places, 303 transitions, 7057 flow. Second operand 7 states and 2287 transitions. [2023-08-29 22:50:57,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 416 transitions, 9254 flow [2023-08-29 22:50:59,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 416 transitions, 8984 flow, removed 20 selfloop flow, removed 4 redundant places. [2023-08-29 22:50:59,978 INFO L231 Difference]: Finished difference. Result has 251 places, 306 transitions, 7135 flow [2023-08-29 22:50:59,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=6765, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7135, PETRI_PLACES=251, PETRI_TRANSITIONS=306} [2023-08-29 22:50:59,979 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 200 predicate places. [2023-08-29 22:50:59,979 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 306 transitions, 7135 flow [2023-08-29 22:50:59,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 316.14285714285717) internal successors, (2213), 7 states have internal predecessors, (2213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:50:59,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:50:59,980 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:50:59,988 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 (62)] Forceful destruction successful, exit code 0 [2023-08-29 22:51:00,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:51:00,180 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-29 22:51:00,180 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:51:00,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1473341329, now seen corresponding path program 10 times [2023-08-29 22:51:00,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 22:51:00,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1905444016] [2023-08-29 22:51:00,181 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-29 22:51:00,181 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:51:00,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 22:51:00,182 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 22:51:00,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (63)] Waiting until timeout for monitored process [2023-08-29 22:51:00,379 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-29 22:51:00,379 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 22:51:00,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-29 22:51:00,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:51:00,589 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-29 22:51:00,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 22:51:01,075 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-29 22:51:01,075 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 22:51:01,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1905444016] [2023-08-29 22:51:01,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1905444016] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-29 22:51:01,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-29 22:51:01,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2023-08-29 22:51:01,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798532943] [2023-08-29 22:51:01,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:51:01,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 22:51:01,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 22:51:01,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 22:51:01,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-08-29 22:51:01,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 781 [2023-08-29 22:51:01,935 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 306 transitions, 7135 flow. Second operand has 7 states, 7 states have (on average 316.14285714285717) internal successors, (2213), 7 states have internal predecessors, (2213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:51:01,935 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:51:01,935 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 781 [2023-08-29 22:51:01,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:51:10,781 INFO L130 PetriNetUnfolder]: 19539/32998 cut-off events. [2023-08-29 22:51:10,781 INFO L131 PetriNetUnfolder]: For 483510/483510 co-relation queries the response was YES. [2023-08-29 22:51:11,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185223 conditions, 32998 events. 19539/32998 cut-off events. For 483510/483510 co-relation queries the response was YES. Maximal size of possible extension queue 1786. Compared 278871 event pairs, 8686 based on Foata normal form. 30/33028 useless extension candidates. Maximal degree in co-relation 185122. Up to 10083 conditions per place. [2023-08-29 22:51:11,595 INFO L137 encePairwiseOnDemand]: 773/781 looper letters, 298 selfloop transitions, 113 changer transitions 0/411 dead transitions. [2023-08-29 22:51:11,595 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 411 transitions, 9211 flow [2023-08-29 22:51:11,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 22:51:11,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 22:51:11,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2284 transitions. [2023-08-29 22:51:11,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41777940369489663 [2023-08-29 22:51:11,597 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2284 transitions. [2023-08-29 22:51:11,598 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2284 transitions. [2023-08-29 22:51:11,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:51:11,598 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2284 transitions. [2023-08-29 22:51:11,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 326.2857142857143) internal successors, (2284), 7 states have internal predecessors, (2284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:51:11,601 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:51:11,602 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:51:11,602 INFO L175 Difference]: Start difference. First operand has 251 places, 306 transitions, 7135 flow. Second operand 7 states and 2284 transitions. [2023-08-29 22:51:11,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 411 transitions, 9211 flow [2023-08-29 22:51:14,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 411 transitions, 9069 flow, removed 9 selfloop flow, removed 3 redundant places. [2023-08-29 22:51:14,482 INFO L231 Difference]: Finished difference. Result has 256 places, 314 transitions, 7459 flow [2023-08-29 22:51:14,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=7001, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7459, PETRI_PLACES=256, PETRI_TRANSITIONS=314} [2023-08-29 22:51:14,483 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 205 predicate places. [2023-08-29 22:51:14,483 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 314 transitions, 7459 flow [2023-08-29 22:51:14,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 316.14285714285717) internal successors, (2213), 7 states have internal predecessors, (2213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:51:14,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:51:14,483 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:51:14,491 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 (63)] Ended with exit code 0 [2023-08-29 22:51:14,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:51:14,684 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-29 22:51:14,684 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:51:14,684 INFO L85 PathProgramCache]: Analyzing trace with hash -446767957, now seen corresponding path program 11 times [2023-08-29 22:51:14,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 22:51:14,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [891885030] [2023-08-29 22:51:14,684 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-29 22:51:14,684 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:51:14,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 22:51:14,685 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 22:51:14,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (64)] Waiting until timeout for monitored process [2023-08-29 22:51:14,889 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-29 22:51:14,890 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 22:51:14,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-29 22:51:14,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:51:15,054 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-29 22:51:15,055 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 22:51:15,055 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 22:51:15,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [891885030] [2023-08-29 22:51:15,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [891885030] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:51:15,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:51:15,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-29 22:51:15,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592989235] [2023-08-29 22:51:15,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:51:15,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 22:51:15,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 22:51:15,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 22:51:15,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-29 22:51:15,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 781 [2023-08-29 22:51:15,376 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 314 transitions, 7459 flow. Second operand has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:51:15,376 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:51:15,376 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 781 [2023-08-29 22:51:15,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:51:23,982 INFO L130 PetriNetUnfolder]: 19521/32944 cut-off events. [2023-08-29 22:51:23,983 INFO L131 PetriNetUnfolder]: For 501043/501043 co-relation queries the response was YES. [2023-08-29 22:51:24,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188190 conditions, 32944 events. 19521/32944 cut-off events. For 501043/501043 co-relation queries the response was YES. Maximal size of possible extension queue 1781. Compared 277449 event pairs, 10764 based on Foata normal form. 4/32948 useless extension candidates. Maximal degree in co-relation 188088. Up to 22269 conditions per place. [2023-08-29 22:51:24,780 INFO L137 encePairwiseOnDemand]: 773/781 looper letters, 253 selfloop transitions, 125 changer transitions 4/382 dead transitions. [2023-08-29 22:51:24,780 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 382 transitions, 8863 flow [2023-08-29 22:51:24,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 22:51:24,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 22:51:24,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2246 transitions. [2023-08-29 22:51:24,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4108286080117066 [2023-08-29 22:51:24,782 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2246 transitions. [2023-08-29 22:51:24,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2246 transitions. [2023-08-29 22:51:24,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:51:24,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2246 transitions. [2023-08-29 22:51:24,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 320.85714285714283) internal successors, (2246), 7 states have internal predecessors, (2246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:51:24,787 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:51:24,787 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:51:24,787 INFO L175 Difference]: Start difference. First operand has 256 places, 314 transitions, 7459 flow. Second operand 7 states and 2246 transitions. [2023-08-29 22:51:24,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 382 transitions, 8863 flow [2023-08-29 22:51:27,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 382 transitions, 8677 flow, removed 8 selfloop flow, removed 3 redundant places. [2023-08-29 22:51:27,525 INFO L231 Difference]: Finished difference. Result has 259 places, 312 transitions, 7471 flow [2023-08-29 22:51:27,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=7244, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7471, PETRI_PLACES=259, PETRI_TRANSITIONS=312} [2023-08-29 22:51:27,526 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 208 predicate places. [2023-08-29 22:51:27,526 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 312 transitions, 7471 flow [2023-08-29 22:51:27,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:51:27,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:51:27,527 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:51:27,542 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (64)] Ended with exit code 0 [2023-08-29 22:51:27,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:51:27,738 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-29 22:51:27,738 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:51:27,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1695526514, now seen corresponding path program 13 times [2023-08-29 22:51:27,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 22:51:27,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [65152201] [2023-08-29 22:51:27,739 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-29 22:51:27,739 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:51:27,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 22:51:27,741 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 22:51:27,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (65)] Waiting until timeout for monitored process [2023-08-29 22:51:27,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:51:27,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-29 22:51:27,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:51:28,204 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-29 22:51:28,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 22:51:28,843 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-29 22:51:28,843 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 22:51:28,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [65152201] [2023-08-29 22:51:28,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [65152201] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-29 22:51:28,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-29 22:51:28,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2023-08-29 22:51:28,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969039726] [2023-08-29 22:51:28,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:51:28,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 22:51:28,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 22:51:28,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 22:51:28,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2023-08-29 22:51:29,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 781 [2023-08-29 22:51:29,919 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 312 transitions, 7471 flow. Second operand has 7 states, 7 states have (on average 316.14285714285717) internal successors, (2213), 7 states have internal predecessors, (2213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:51:29,919 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:51:29,919 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 781 [2023-08-29 22:51:29,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:51:39,206 INFO L130 PetriNetUnfolder]: 19858/33571 cut-off events. [2023-08-29 22:51:39,206 INFO L131 PetriNetUnfolder]: For 510842/510842 co-relation queries the response was YES. [2023-08-29 22:51:39,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192550 conditions, 33571 events. 19858/33571 cut-off events. For 510842/510842 co-relation queries the response was YES. Maximal size of possible extension queue 1817. Compared 284246 event pairs, 11000 based on Foata normal form. 12/33583 useless extension candidates. Maximal degree in co-relation 192448. Up to 22329 conditions per place. [2023-08-29 22:51:39,814 INFO L137 encePairwiseOnDemand]: 773/781 looper letters, 265 selfloop transitions, 129 changer transitions 0/394 dead transitions. [2023-08-29 22:51:39,815 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 394 transitions, 9104 flow [2023-08-29 22:51:39,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 22:51:39,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 22:51:39,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2285 transitions. [2023-08-29 22:51:39,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41796231937077005 [2023-08-29 22:51:39,817 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2285 transitions. [2023-08-29 22:51:39,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2285 transitions. [2023-08-29 22:51:39,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:51:39,817 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2285 transitions. [2023-08-29 22:51:39,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 326.42857142857144) internal successors, (2285), 7 states have internal predecessors, (2285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:51:39,821 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:51:39,821 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:51:39,821 INFO L175 Difference]: Start difference. First operand has 259 places, 312 transitions, 7471 flow. Second operand 7 states and 2285 transitions. [2023-08-29 22:51:39,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 394 transitions, 9104 flow [2023-08-29 22:51:42,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 394 transitions, 8840 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-29 22:51:42,414 INFO L231 Difference]: Finished difference. Result has 262 places, 327 transitions, 7983 flow [2023-08-29 22:51:42,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=7221, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7983, PETRI_PLACES=262, PETRI_TRANSITIONS=327} [2023-08-29 22:51:42,415 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 211 predicate places. [2023-08-29 22:51:42,415 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 327 transitions, 7983 flow [2023-08-29 22:51:42,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 316.14285714285717) internal successors, (2213), 7 states have internal predecessors, (2213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:51:42,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:51:42,416 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:51:42,427 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (65)] Forceful destruction successful, exit code 0 [2023-08-29 22:51:42,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:51:42,626 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-29 22:51:42,627 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:51:42,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1056687234, now seen corresponding path program 14 times [2023-08-29 22:51:42,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 22:51:42,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [367304073] [2023-08-29 22:51:42,627 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 22:51:42,627 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:51:42,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 22:51:42,628 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 22:51:42,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (66)] Waiting until timeout for monitored process [2023-08-29 22:51:42,879 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-29 22:51:42,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 22:51:42,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-29 22:51:42,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:51:43,070 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-29 22:51:43,070 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 22:51:43,070 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 22:51:43,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [367304073] [2023-08-29 22:51:43,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [367304073] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:51:43,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:51:43,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-29 22:51:43,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961273169] [2023-08-29 22:51:43,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:51:43,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 22:51:43,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 22:51:43,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 22:51:43,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-29 22:51:43,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 781 [2023-08-29 22:51:43,422 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 327 transitions, 7983 flow. Second operand has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:51:43,422 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:51:43,422 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 781 [2023-08-29 22:51:43,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:51:52,387 INFO L130 PetriNetUnfolder]: 19852/33565 cut-off events. [2023-08-29 22:51:52,387 INFO L131 PetriNetUnfolder]: For 516867/516867 co-relation queries the response was YES. [2023-08-29 22:51:53,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193550 conditions, 33565 events. 19852/33565 cut-off events. For 516867/516867 co-relation queries the response was YES. Maximal size of possible extension queue 1817. Compared 284508 event pairs, 10752 based on Foata normal form. 6/33571 useless extension candidates. Maximal degree in co-relation 193444. Up to 22329 conditions per place. [2023-08-29 22:51:53,323 INFO L137 encePairwiseOnDemand]: 773/781 looper letters, 248 selfloop transitions, 128 changer transitions 6/382 dead transitions. [2023-08-29 22:51:53,323 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 382 transitions, 9118 flow [2023-08-29 22:51:53,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 22:51:53,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 22:51:53,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2242 transitions. [2023-08-29 22:51:53,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4100969453082129 [2023-08-29 22:51:53,326 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2242 transitions. [2023-08-29 22:51:53,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2242 transitions. [2023-08-29 22:51:53,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:51:53,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2242 transitions. [2023-08-29 22:51:53,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 320.2857142857143) internal successors, (2242), 7 states have internal predecessors, (2242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:51:53,330 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:51:53,330 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:51:53,330 INFO L175 Difference]: Start difference. First operand has 262 places, 327 transitions, 7983 flow. Second operand 7 states and 2242 transitions. [2023-08-29 22:51:53,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 382 transitions, 9118 flow [2023-08-29 22:51:56,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 382 transitions, 8943 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-08-29 22:51:56,081 INFO L231 Difference]: Finished difference. Result has 267 places, 327 transitions, 8051 flow [2023-08-29 22:51:56,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=7772, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8051, PETRI_PLACES=267, PETRI_TRANSITIONS=327} [2023-08-29 22:51:56,082 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 216 predicate places. [2023-08-29 22:51:56,082 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 327 transitions, 8051 flow [2023-08-29 22:51:56,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:51:56,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:51:56,082 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:51:56,091 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 (66)] Ended with exit code 0 [2023-08-29 22:51:56,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:51:56,283 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-29 22:51:56,283 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:51:56,283 INFO L85 PathProgramCache]: Analyzing trace with hash 2006868412, now seen corresponding path program 15 times [2023-08-29 22:51:56,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 22:51:56,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1199866396] [2023-08-29 22:51:56,284 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-29 22:51:56,284 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:51:56,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 22:51:56,284 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 22:51:56,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (67)] Waiting until timeout for monitored process [2023-08-29 22:51:56,518 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-29 22:51:56,518 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 22:51:56,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-29 22:51:56,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:51:56,778 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-29 22:51:56,778 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 22:51:56,778 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 22:51:56,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1199866396] [2023-08-29 22:51:56,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1199866396] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 22:51:56,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 22:51:56,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-29 22:51:56,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368424324] [2023-08-29 22:51:56,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:51:56,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 22:51:56,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 22:51:56,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 22:51:56,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-29 22:51:57,229 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 781 [2023-08-29 22:51:57,229 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 327 transitions, 8051 flow. Second operand has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:51:57,230 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:51:57,230 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 781 [2023-08-29 22:51:57,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:52:06,027 INFO L130 PetriNetUnfolder]: 19867/33586 cut-off events. [2023-08-29 22:52:06,027 INFO L131 PetriNetUnfolder]: For 522407/522407 co-relation queries the response was YES. [2023-08-29 22:52:06,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193913 conditions, 33586 events. 19867/33586 cut-off events. For 522407/522407 co-relation queries the response was YES. Maximal size of possible extension queue 1819. Compared 284546 event pairs, 10752 based on Foata normal form. 12/33598 useless extension candidates. Maximal degree in co-relation 193806. Up to 22329 conditions per place. [2023-08-29 22:52:06,861 INFO L137 encePairwiseOnDemand]: 773/781 looper letters, 252 selfloop transitions, 129 changer transitions 0/381 dead transitions. [2023-08-29 22:52:06,861 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 381 transitions, 9201 flow [2023-08-29 22:52:06,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 22:52:06,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 22:52:06,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2240 transitions. [2023-08-29 22:52:06,863 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40973111395646605 [2023-08-29 22:52:06,863 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2240 transitions. [2023-08-29 22:52:06,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2240 transitions. [2023-08-29 22:52:06,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:52:06,863 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2240 transitions. [2023-08-29 22:52:06,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 320.0) internal successors, (2240), 7 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:52:06,867 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:52:06,867 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:52:06,867 INFO L175 Difference]: Start difference. First operand has 267 places, 327 transitions, 8051 flow. Second operand 7 states and 2240 transitions. [2023-08-29 22:52:06,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 381 transitions, 9201 flow [2023-08-29 22:52:09,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 381 transitions, 9041 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-29 22:52:09,780 INFO L231 Difference]: Finished difference. Result has 271 places, 328 transitions, 8171 flow [2023-08-29 22:52:09,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=7892, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8171, PETRI_PLACES=271, PETRI_TRANSITIONS=328} [2023-08-29 22:52:09,781 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 220 predicate places. [2023-08-29 22:52:09,781 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 328 transitions, 8171 flow [2023-08-29 22:52:09,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 312.14285714285717) internal successors, (2185), 7 states have internal predecessors, (2185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:52:09,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:52:09,781 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:52:09,790 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (67)] Ended with exit code 0 [2023-08-29 22:52:09,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:52:09,982 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-29 22:52:09,982 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:52:09,982 INFO L85 PathProgramCache]: Analyzing trace with hash 73095031, now seen corresponding path program 12 times [2023-08-29 22:52:09,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 22:52:09,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [176687326] [2023-08-29 22:52:09,983 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-29 22:52:09,983 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 [2023-08-29 22:52:09,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 22:52:09,983 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 22:52:09,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (68)] Waiting until timeout for monitored process [2023-08-29 22:52:10,269 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-29 22:52:10,269 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 22:52:10,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-29 22:52:10,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:52:10,544 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-29 22:52:10,545 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 22:52:11,157 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-29 22:52:11,157 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 22:52:11,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [176687326] [2023-08-29 22:52:11,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [176687326] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-29 22:52:11,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-29 22:52:11,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2023-08-29 22:52:11,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980481142] [2023-08-29 22:52:11,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:52:11,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 22:52:11,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 22:52:11,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 22:52:11,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-08-29 22:52:12,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 781 [2023-08-29 22:52:12,611 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 328 transitions, 8171 flow. Second operand has 7 states, 7 states have (on average 316.14285714285717) internal successors, (2213), 7 states have internal predecessors, (2213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:52:12,611 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:52:12,611 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 781 [2023-08-29 22:52:12,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:52:22,396 INFO L130 PetriNetUnfolder]: 20313/34384 cut-off events. [2023-08-29 22:52:22,396 INFO L131 PetriNetUnfolder]: For 551731/551731 co-relation queries the response was YES. [2023-08-29 22:52:23,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200548 conditions, 34384 events. 20313/34384 cut-off events. For 551731/551731 co-relation queries the response was YES. Maximal size of possible extension queue 1861. Compared 293143 event pairs, 10218 based on Foata normal form. 12/34396 useless extension candidates. Maximal degree in co-relation 200440. Up to 14963 conditions per place. [2023-08-29 22:52:23,145 INFO L137 encePairwiseOnDemand]: 773/781 looper letters, 292 selfloop transitions, 137 changer transitions 0/429 dead transitions. [2023-08-29 22:52:23,145 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 429 transitions, 10153 flow [2023-08-29 22:52:23,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 22:52:23,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 22:52:23,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2285 transitions. [2023-08-29 22:52:23,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41796231937077005 [2023-08-29 22:52:23,147 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2285 transitions. [2023-08-29 22:52:23,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2285 transitions. [2023-08-29 22:52:23,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:52:23,148 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2285 transitions. [2023-08-29 22:52:23,149 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 326.42857142857144) internal successors, (2285), 7 states have internal predecessors, (2285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:52:23,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:52:23,151 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:52:23,151 INFO L175 Difference]: Start difference. First operand has 271 places, 328 transitions, 8171 flow. Second operand 7 states and 2285 transitions. [2023-08-29 22:52:23,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 429 transitions, 10153 flow [2023-08-29 22:52:26,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 429 transitions, 9883 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-29 22:52:26,300 INFO L231 Difference]: Finished difference. Result has 275 places, 345 transitions, 8641 flow [2023-08-29 22:52:26,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=7913, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8641, PETRI_PLACES=275, PETRI_TRANSITIONS=345} [2023-08-29 22:52:26,301 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 224 predicate places. [2023-08-29 22:52:26,301 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 345 transitions, 8641 flow [2023-08-29 22:52:26,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 316.14285714285717) internal successors, (2213), 7 states have internal predecessors, (2213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:52:26,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:52:26,302 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:52:26,312 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (68)] Ended with exit code 0 [2023-08-29 22:52:26,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:52:26,509 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-29 22:52:26,509 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:52:26,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1687649186, now seen corresponding path program 16 times [2023-08-29 22:52:26,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 22:52:26,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1723547006] [2023-08-29 22:52:26,510 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-29 22:52:26,510 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:52:26,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 22:52:26,511 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 22:52:26,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (69)] Waiting until timeout for monitored process [2023-08-29 22:52:26,721 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-29 22:52:26,721 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 22:52:26,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-29 22:52:26,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:52:26,963 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-29 22:52:26,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 22:52:27,548 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-29 22:52:27,548 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 22:52:27,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1723547006] [2023-08-29 22:52:27,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1723547006] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-29 22:52:27,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-29 22:52:27,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2023-08-29 22:52:27,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186409532] [2023-08-29 22:52:27,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:52:27,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 22:52:27,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 22:52:27,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 22:52:27,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2023-08-29 22:52:28,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 781 [2023-08-29 22:52:28,566 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 345 transitions, 8641 flow. Second operand has 7 states, 7 states have (on average 316.14285714285717) internal successors, (2213), 7 states have internal predecessors, (2213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:52:28,566 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:52:28,566 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 781 [2023-08-29 22:52:28,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 22:52:38,672 INFO L130 PetriNetUnfolder]: 20315/34408 cut-off events. [2023-08-29 22:52:38,672 INFO L131 PetriNetUnfolder]: For 579070/579070 co-relation queries the response was YES. [2023-08-29 22:52:39,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 203985 conditions, 34408 events. 20315/34408 cut-off events. For 579070/579070 co-relation queries the response was YES. Maximal size of possible extension queue 1864. Compared 293373 event pairs, 11102 based on Foata normal form. 12/34420 useless extension candidates. Maximal degree in co-relation 203874. Up to 23067 conditions per place. [2023-08-29 22:52:39,203 INFO L137 encePairwiseOnDemand]: 773/781 looper letters, 277 selfloop transitions, 136 changer transitions 0/413 dead transitions. [2023-08-29 22:52:39,203 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 413 transitions, 9930 flow [2023-08-29 22:52:39,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 22:52:39,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 22:52:39,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2281 transitions. [2023-08-29 22:52:39,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4172306566672764 [2023-08-29 22:52:39,205 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2281 transitions. [2023-08-29 22:52:39,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2281 transitions. [2023-08-29 22:52:39,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 22:52:39,206 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2281 transitions. [2023-08-29 22:52:39,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 325.85714285714283) internal successors, (2281), 7 states have internal predecessors, (2281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:52:39,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:52:39,209 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:52:39,209 INFO L175 Difference]: Start difference. First operand has 275 places, 345 transitions, 8641 flow. Second operand 7 states and 2281 transitions. [2023-08-29 22:52:39,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 413 transitions, 9930 flow [2023-08-29 22:52:42,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 413 transitions, 9759 flow, removed 26 selfloop flow, removed 2 redundant places. [2023-08-29 22:52:42,496 INFO L231 Difference]: Finished difference. Result has 281 places, 348 transitions, 8799 flow [2023-08-29 22:52:42,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=8479, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8799, PETRI_PLACES=281, PETRI_TRANSITIONS=348} [2023-08-29 22:52:42,496 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 230 predicate places. [2023-08-29 22:52:42,496 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 348 transitions, 8799 flow [2023-08-29 22:52:42,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 316.14285714285717) internal successors, (2213), 7 states have internal predecessors, (2213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:52:42,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 22:52:42,497 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 22:52:42,507 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (69)] Forceful destruction successful, exit code 0 [2023-08-29 22:52:42,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:52:42,698 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-29 22:52:42,698 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 22:52:42,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1246107217, now seen corresponding path program 13 times [2023-08-29 22:52:42,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 22:52:42,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1147853439] [2023-08-29 22:52:42,698 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-29 22:52:42,698 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-29 22:52:42,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 22:52:42,699 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-29 22:52:42,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (70)] Waiting until timeout for monitored process [2023-08-29 22:52:42,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 22:52:42,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-29 22:52:42,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 22:52:43,146 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-29 22:52:43,146 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 22:52:43,629 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-29 22:52:43,629 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 22:52:43,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1147853439] [2023-08-29 22:52:43,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1147853439] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-29 22:52:43,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-29 22:52:43,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2023-08-29 22:52:43,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215635590] [2023-08-29 22:52:43,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 22:52:43,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 22:52:43,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 22:52:43,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 22:52:43,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-08-29 22:52:44,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 781 [2023-08-29 22:52:44,671 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 348 transitions, 8799 flow. Second operand has 7 states, 7 states have (on average 316.14285714285717) internal successors, (2213), 7 states have internal predecessors, (2213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 22:52:44,671 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 22:52:44,671 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 781 [2023-08-29 22:52:44,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand