./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/weaver/unroll-cond-4.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations 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/unroll-cond-4.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4755329f7559a8be1422f8772c1ed30abe185c2742a237de140cc196ec4e9010 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 01:25:54,517 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 01:25:54,519 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 01:25:54,554 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 01:25:54,554 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 01:25:54,557 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 01:25:54,559 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 01:25:54,562 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 01:25:54,564 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 01:25:54,565 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 01:25:54,566 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 01:25:54,566 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 01:25:54,567 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 01:25:54,567 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 01:25:54,568 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 01:25:54,569 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 01:25:54,569 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 01:25:54,571 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 01:25:54,573 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 01:25:54,577 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 01:25:54,581 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 01:25:54,582 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 01:25:54,583 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 01:25:54,584 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 01:25:54,586 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 01:25:54,592 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 01:25:54,592 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 01:25:54,593 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 01:25:54,593 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 01:25:54,594 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 01:25:54,595 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 01:25:54,595 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 01:25:54,597 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 01:25:54,597 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 01:25:54,598 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 01:25:54,599 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 01:25:54,600 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 01:25:54,600 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 01:25:54,600 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 01:25:54,601 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 01:25:54,601 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 01:25:54,602 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-30 01:25:54,622 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 01:25:54,622 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 01:25:54,623 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 01:25:54,623 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 01:25:54,624 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 01:25:54,624 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 01:25:54,625 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 01:25:54,625 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 01:25:54,625 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 01:25:54,625 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 01:25:54,626 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 01:25:54,626 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 01:25:54,626 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 01:25:54,626 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 01:25:54,627 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 01:25:54,627 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 01:25:54,627 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 01:25:54,627 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 01:25:54,627 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 01:25:54,627 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 01:25:54,627 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 01:25:54,628 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 01:25:54,628 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 01:25:54,628 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 01:25:54,628 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 01:25:54,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 01:25:54,628 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 01:25:54,629 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 01:25:54,629 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 01:25:54,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 01:25:54,629 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 01:25:54,629 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 01:25:54,630 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 01:25:54,630 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 01:25:54,630 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4755329f7559a8be1422f8772c1ed30abe185c2742a237de140cc196ec4e9010 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 01:25:54,869 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 01:25:54,883 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 01:25:54,885 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 01:25:54,886 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 01:25:54,886 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 01:25:54,887 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/unroll-cond-4.wvr.c [2023-08-30 01:25:55,856 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 01:25:56,022 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 01:25:56,022 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-cond-4.wvr.c [2023-08-30 01:25:56,027 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac4f9d444/4ab1dd62e4e142909de2d7d3f11d8e4f/FLAGa378f8c70 [2023-08-30 01:25:56,039 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac4f9d444/4ab1dd62e4e142909de2d7d3f11d8e4f [2023-08-30 01:25:56,040 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 01:25:56,042 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 01:25:56,042 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 01:25:56,043 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 01:25:56,045 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 01:25:56,045 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 01:25:56" (1/1) ... [2023-08-30 01:25:56,046 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46288b69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:25:56, skipping insertion in model container [2023-08-30 01:25:56,046 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 01:25:56" (1/1) ... [2023-08-30 01:25:56,050 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 01:25:56,068 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 01:25:56,171 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-cond-4.wvr.c[2808,2821] [2023-08-30 01:25:56,176 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 01:25:56,183 ERROR L324 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-08-30 01:25:56,183 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2c2c4c91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:25:56, skipping insertion in model container [2023-08-30 01:25:56,183 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 01:25:56,184 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-08-30 01:25:56,185 INFO L158 Benchmark]: Toolchain (without parser) took 142.41ms. Allocated memory is still 90.2MB. Free memory was 67.0MB in the beginning and 57.0MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-08-30 01:25:56,185 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 62.9MB. Free memory was 40.6MB in the beginning and 40.6MB in the end (delta: 32.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 01:25:56,186 INFO L158 Benchmark]: CACSL2BoogieTranslator took 140.98ms. Allocated memory is still 90.2MB. Free memory was 66.7MB in the beginning and 57.0MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-08-30 01:25:56,186 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 62.9MB. Free memory was 40.6MB in the beginning and 40.6MB in the end (delta: 32.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 140.98ms. Allocated memory is still 90.2MB. Free memory was 66.7MB in the beginning and 57.0MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 116]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/weaver/unroll-cond-4.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4755329f7559a8be1422f8772c1ed30abe185c2742a237de140cc196ec4e9010 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 01:25:57,684 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 01:25:57,686 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 01:25:57,722 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 01:25:57,722 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 01:25:57,725 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 01:25:57,726 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 01:25:57,729 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 01:25:57,730 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 01:25:57,734 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 01:25:57,735 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 01:25:57,737 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 01:25:57,737 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 01:25:57,739 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 01:25:57,740 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 01:25:57,745 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 01:25:57,746 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 01:25:57,747 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 01:25:57,748 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 01:25:57,752 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 01:25:57,753 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 01:25:57,754 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 01:25:57,754 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 01:25:57,755 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 01:25:57,760 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 01:25:57,761 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 01:25:57,761 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 01:25:57,763 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 01:25:57,763 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 01:25:57,764 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 01:25:57,764 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 01:25:57,765 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 01:25:57,766 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 01:25:57,767 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 01:25:57,768 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 01:25:57,768 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 01:25:57,768 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 01:25:57,769 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 01:25:57,769 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 01:25:57,769 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 01:25:57,778 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 01:25:57,779 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-08-30 01:25:57,815 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 01:25:57,816 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 01:25:57,817 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 01:25:57,817 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 01:25:57,817 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 01:25:57,817 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 01:25:57,818 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 01:25:57,818 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 01:25:57,818 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 01:25:57,818 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 01:25:57,819 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 01:25:57,819 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 01:25:57,819 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 01:25:57,819 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 01:25:57,819 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 01:25:57,819 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 01:25:57,820 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 01:25:57,820 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 01:25:57,820 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 01:25:57,820 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 01:25:57,820 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-08-30 01:25:57,820 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-08-30 01:25:57,820 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 01:25:57,820 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 01:25:57,821 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 01:25:57,821 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 01:25:57,821 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 01:25:57,821 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 01:25:57,821 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 01:25:57,821 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 01:25:57,821 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-08-30 01:25:57,822 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-08-30 01:25:57,822 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 01:25:57,822 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 01:25:57,822 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 01:25:57,822 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-08-30 01:25:57,822 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 01:25:57,822 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4755329f7559a8be1422f8772c1ed30abe185c2742a237de140cc196ec4e9010 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 01:25:58,066 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 01:25:58,081 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 01:25:58,083 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 01:25:58,083 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 01:25:58,084 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 01:25:58,085 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/unroll-cond-4.wvr.c [2023-08-30 01:25:59,149 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 01:25:59,366 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 01:25:59,377 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-cond-4.wvr.c [2023-08-30 01:25:59,385 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5730815be/50960040ac9841438e0033b391f7d08a/FLAG2afd6fcf6 [2023-08-30 01:25:59,401 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5730815be/50960040ac9841438e0033b391f7d08a [2023-08-30 01:25:59,402 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 01:25:59,403 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 01:25:59,406 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 01:25:59,406 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 01:25:59,409 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 01:25:59,409 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 01:25:59" (1/1) ... [2023-08-30 01:25:59,410 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ee36a18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:25:59, skipping insertion in model container [2023-08-30 01:25:59,410 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 01:25:59" (1/1) ... [2023-08-30 01:25:59,415 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 01:25:59,431 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 01:25:59,561 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-cond-4.wvr.c[2808,2821] [2023-08-30 01:25:59,606 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 01:25:59,618 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-08-30 01:25:59,643 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 01:25:59,661 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-cond-4.wvr.c[2808,2821] [2023-08-30 01:25:59,670 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 01:25:59,677 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 01:25:59,706 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-cond-4.wvr.c[2808,2821] [2023-08-30 01:25:59,710 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 01:25:59,720 INFO L208 MainTranslator]: Completed translation [2023-08-30 01:25:59,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:25:59 WrapperNode [2023-08-30 01:25:59,723 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 01:25:59,724 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 01:25:59,724 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 01:25:59,724 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 01:25:59,733 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:25:59" (1/1) ... [2023-08-30 01:25:59,750 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:25:59" (1/1) ... [2023-08-30 01:25:59,772 INFO L138 Inliner]: procedures = 26, calls = 41, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 184 [2023-08-30 01:25:59,772 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 01:25:59,773 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 01:25:59,774 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 01:25:59,774 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 01:25:59,779 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:25:59" (1/1) ... [2023-08-30 01:25:59,780 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:25:59" (1/1) ... [2023-08-30 01:25:59,792 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:25:59" (1/1) ... [2023-08-30 01:25:59,792 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:25:59" (1/1) ... [2023-08-30 01:25:59,807 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:25:59" (1/1) ... [2023-08-30 01:25:59,812 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:25:59" (1/1) ... [2023-08-30 01:25:59,813 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:25:59" (1/1) ... [2023-08-30 01:25:59,814 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:25:59" (1/1) ... [2023-08-30 01:25:59,819 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 01:25:59,820 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 01:25:59,821 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 01:25:59,821 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 01:25:59,822 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:25:59" (1/1) ... [2023-08-30 01:25:59,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 01:25:59,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 01:25:59,849 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 01:25:59,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 01:25:59,875 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 01:25:59,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-08-30 01:25:59,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 01:25:59,876 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-08-30 01:25:59,876 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 01:25:59,876 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 01:25:59,876 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 01:25:59,877 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 01:25:59,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 01:25:59,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 01:25:59,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 01:25:59,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 01:25:59,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-08-30 01:25:59,878 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 01:26:00,007 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 01:26:00,008 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 01:26:00,382 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 01:26:00,389 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 01:26:00,389 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-30 01:26:00,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 01:26:00 BoogieIcfgContainer [2023-08-30 01:26:00,390 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 01:26:00,392 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 01:26:00,392 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 01:26:00,394 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 01:26:00,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 01:25:59" (1/3) ... [2023-08-30 01:26:00,394 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1aac8cef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 01:26:00, skipping insertion in model container [2023-08-30 01:26:00,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:25:59" (2/3) ... [2023-08-30 01:26:00,395 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1aac8cef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 01:26:00, skipping insertion in model container [2023-08-30 01:26:00,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 01:26:00" (3/3) ... [2023-08-30 01:26:00,396 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-cond-4.wvr.c [2023-08-30 01:26:00,406 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 01:26:00,406 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2023-08-30 01:26:00,406 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 01:26:00,474 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 01:26:00,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 236 places, 250 transitions, 516 flow [2023-08-30 01:26:00,587 INFO L130 PetriNetUnfolder]: 21/248 cut-off events. [2023-08-30 01:26:00,589 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 01:26:00,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 257 conditions, 248 events. 21/248 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 531 event pairs, 0 based on Foata normal form. 0/199 useless extension candidates. Maximal degree in co-relation 153. Up to 2 conditions per place. [2023-08-30 01:26:00,594 INFO L82 GeneralOperation]: Start removeDead. Operand has 236 places, 250 transitions, 516 flow [2023-08-30 01:26:00,601 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 230 places, 244 transitions, 500 flow [2023-08-30 01:26:00,605 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 01:26:00,610 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 230 places, 244 transitions, 500 flow [2023-08-30 01:26:00,612 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 230 places, 244 transitions, 500 flow [2023-08-30 01:26:00,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 230 places, 244 transitions, 500 flow [2023-08-30 01:26:00,656 INFO L130 PetriNetUnfolder]: 21/244 cut-off events. [2023-08-30 01:26:00,656 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 01:26:00,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 253 conditions, 244 events. 21/244 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 522 event pairs, 0 based on Foata normal form. 0/196 useless extension candidates. Maximal degree in co-relation 153. Up to 2 conditions per place. [2023-08-30 01:26:00,663 INFO L119 LiptonReduction]: Number of co-enabled transitions 7800 [2023-08-30 01:26:35,037 INFO L134 LiptonReduction]: Checked pairs total: 7465 [2023-08-30 01:26:35,037 INFO L136 LiptonReduction]: Total number of compositions: 283 [2023-08-30 01:26:35,052 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 01:26:35,057 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;@51e424d8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 01:26:35,057 INFO L358 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2023-08-30 01:26:35,062 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 01:26:35,062 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 01:26:35,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:26:35,063 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 01:26:35,063 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-08-30 01:26:35,066 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:26:35,066 INFO L85 PathProgramCache]: Analyzing trace with hash 32770, now seen corresponding path program 1 times [2023-08-30 01:26:35,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 01:26:35,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1088945504] [2023-08-30 01:26:35,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:26:35,078 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 01:26:35,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 01:26:35,080 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 01:26:35,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-08-30 01:26:35,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:26:35,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 01:26:35,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 01:26:35,312 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2023-08-30 01:26:35,313 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2023-08-30 01:26:35,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:26:35,342 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 01:26:35,343 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 01:26:35,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1088945504] [2023-08-30 01:26:35,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1088945504] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:26:35,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:26:35,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 01:26:35,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198799563] [2023-08-30 01:26:35,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:26:35,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 01:26:35,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 01:26:35,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 01:26:35,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 01:26:35,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 533 [2023-08-30 01:26:35,568 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 44 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 224.66666666666666) internal successors, (674), 3 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:26:35,568 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:26:35,568 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 533 [2023-08-30 01:26:35,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:26:36,351 INFO L130 PetriNetUnfolder]: 1912/2639 cut-off events. [2023-08-30 01:26:36,352 INFO L131 PetriNetUnfolder]: For 36/36 co-relation queries the response was YES. [2023-08-30 01:26:36,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5325 conditions, 2639 events. 1912/2639 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 13910 event pairs, 925 based on Foata normal form. 0/532 useless extension candidates. Maximal degree in co-relation 2325. Up to 1323 conditions per place. [2023-08-30 01:26:36,361 INFO L137 encePairwiseOnDemand]: 526/533 looper letters, 72 selfloop transitions, 2 changer transitions 0/76 dead transitions. [2023-08-30 01:26:36,361 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 76 transitions, 324 flow [2023-08-30 01:26:36,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 01:26:36,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 01:26:36,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 755 transitions. [2023-08-30 01:26:36,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4721701063164478 [2023-08-30 01:26:36,372 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 755 transitions. [2023-08-30 01:26:36,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 755 transitions. [2023-08-30 01:26:36,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:26:36,375 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 755 transitions. [2023-08-30 01:26:36,378 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 251.66666666666666) internal successors, (755), 3 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:26:36,382 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 533.0) internal successors, (2132), 4 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:26:36,391 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 533.0) internal successors, (2132), 4 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:26:36,393 INFO L175 Difference]: Start difference. First operand has 48 places, 44 transitions, 100 flow. Second operand 3 states and 755 transitions. [2023-08-30 01:26:36,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 76 transitions, 324 flow [2023-08-30 01:26:36,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 76 transitions, 308 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 01:26:36,398 INFO L231 Difference]: Finished difference. Result has 43 places, 41 transitions, 96 flow [2023-08-30 01:26:36,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=43, PETRI_TRANSITIONS=41} [2023-08-30 01:26:36,401 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -5 predicate places. [2023-08-30 01:26:36,402 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 41 transitions, 96 flow [2023-08-30 01:26:36,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 224.66666666666666) internal successors, (674), 3 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:26:36,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:26:36,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 01:26:36,411 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-08-30 01:26:36,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 01:26:36,609 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-08-30 01:26:36,610 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:26:36,610 INFO L85 PathProgramCache]: Analyzing trace with hash 32851, now seen corresponding path program 1 times [2023-08-30 01:26:36,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 01:26:36,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [361813756] [2023-08-30 01:26:36,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:26:36,611 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 01:26:36,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 01:26:36,612 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 01:26:36,619 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 (3)] Waiting until timeout for monitored process [2023-08-30 01:26:36,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:26:36,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 01:26:36,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 01:26:36,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:26:36,710 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 01:26:36,710 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 01:26:36,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [361813756] [2023-08-30 01:26:36,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [361813756] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:26:36,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:26:36,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 01:26:36,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017057324] [2023-08-30 01:26:36,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:26:36,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 01:26:36,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 01:26:36,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 01:26:36,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 01:26:36,744 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 533 [2023-08-30 01:26:36,745 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 41 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 226.66666666666666) internal successors, (680), 3 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:26:36,745 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:26:36,745 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 533 [2023-08-30 01:26:36,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:26:37,174 INFO L130 PetriNetUnfolder]: 966/1332 cut-off events. [2023-08-30 01:26:37,174 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 01:26:37,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2674 conditions, 1332 events. 966/1332 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 6146 event pairs, 464 based on Foata normal form. 0/263 useless extension candidates. Maximal degree in co-relation 2661. Up to 1326 conditions per place. [2023-08-30 01:26:37,179 INFO L137 encePairwiseOnDemand]: 528/533 looper letters, 38 selfloop transitions, 2 changer transitions 0/42 dead transitions. [2023-08-30 01:26:37,179 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 42 transitions, 178 flow [2023-08-30 01:26:37,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 01:26:37,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 01:26:37,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 721 transitions. [2023-08-30 01:26:37,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4509068167604753 [2023-08-30 01:26:37,182 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 721 transitions. [2023-08-30 01:26:37,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 721 transitions. [2023-08-30 01:26:37,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:26:37,182 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 721 transitions. [2023-08-30 01:26:37,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 240.33333333333334) internal successors, (721), 3 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:26:37,186 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 533.0) internal successors, (2132), 4 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:26:37,186 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 533.0) internal successors, (2132), 4 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:26:37,187 INFO L175 Difference]: Start difference. First operand has 43 places, 41 transitions, 96 flow. Second operand 3 states and 721 transitions. [2023-08-30 01:26:37,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 42 transitions, 178 flow [2023-08-30 01:26:37,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 42 transitions, 176 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 01:26:37,188 INFO L231 Difference]: Finished difference. Result has 45 places, 41 transitions, 106 flow [2023-08-30 01:26:37,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=45, PETRI_TRANSITIONS=41} [2023-08-30 01:26:37,189 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -3 predicate places. [2023-08-30 01:26:37,189 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 41 transitions, 106 flow [2023-08-30 01:26:37,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 226.66666666666666) internal successors, (680), 3 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:26:37,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:26:37,190 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 01:26:37,197 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-08-30 01:26:37,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 01:26:37,397 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-08-30 01:26:37,398 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:26:37,398 INFO L85 PathProgramCache]: Analyzing trace with hash 32769, now seen corresponding path program 1 times [2023-08-30 01:26:37,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 01:26:37,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1063708203] [2023-08-30 01:26:37,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:26:37,401 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 01:26:37,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 01:26:37,402 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 01:26:37,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-08-30 01:26:37,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:26:37,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 01:26:37,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 01:26:37,517 INFO L321 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2023-08-30 01:26:37,518 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 33 [2023-08-30 01:26:37,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:26:37,526 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 01:26:37,526 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 01:26:37,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1063708203] [2023-08-30 01:26:37,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1063708203] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:26:37,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:26:37,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 01:26:37,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028575408] [2023-08-30 01:26:37,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:26:37,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 01:26:37,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 01:26:37,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 01:26:37,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 01:26:37,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 533 [2023-08-30 01:26:37,666 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 41 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 224.66666666666666) internal successors, (674), 3 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:26:37,666 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:26:37,666 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 533 [2023-08-30 01:26:37,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:26:37,991 INFO L130 PetriNetUnfolder]: 966/1330 cut-off events. [2023-08-30 01:26:37,991 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 01:26:37,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2676 conditions, 1330 events. 966/1330 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 6258 event pairs, 464 based on Foata normal form. 2/264 useless extension candidates. Maximal degree in co-relation 2662. Up to 1325 conditions per place. [2023-08-30 01:26:37,995 INFO L137 encePairwiseOnDemand]: 531/533 looper letters, 37 selfloop transitions, 1 changer transitions 0/40 dead transitions. [2023-08-30 01:26:37,995 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 40 transitions, 180 flow [2023-08-30 01:26:38,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 01:26:38,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 01:26:38,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 710 transitions. [2023-08-30 01:26:38,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4440275171982489 [2023-08-30 01:26:38,003 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 710 transitions. [2023-08-30 01:26:38,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 710 transitions. [2023-08-30 01:26:38,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:26:38,004 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 710 transitions. [2023-08-30 01:26:38,005 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 236.66666666666666) internal successors, (710), 3 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:26:38,007 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 533.0) internal successors, (2132), 4 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:26:38,008 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 533.0) internal successors, (2132), 4 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:26:38,008 INFO L175 Difference]: Start difference. First operand has 45 places, 41 transitions, 106 flow. Second operand 3 states and 710 transitions. [2023-08-30 01:26:38,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 40 transitions, 180 flow [2023-08-30 01:26:38,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 40 transitions, 174 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-30 01:26:38,010 INFO L231 Difference]: Finished difference. Result has 44 places, 40 transitions, 100 flow [2023-08-30 01:26:38,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=44, PETRI_TRANSITIONS=40} [2023-08-30 01:26:38,010 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -4 predicate places. [2023-08-30 01:26:38,010 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 40 transitions, 100 flow [2023-08-30 01:26:38,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 224.66666666666666) internal successors, (674), 3 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:26:38,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:26:38,011 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 01:26:38,027 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-08-30 01:26:38,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 01:26:38,218 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-08-30 01:26:38,218 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:26:38,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1019190, now seen corresponding path program 1 times [2023-08-30 01:26:38,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 01:26:38,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1351602700] [2023-08-30 01:26:38,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:26:38,219 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 01:26:38,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 01:26:38,220 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 01:26:38,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-08-30 01:26:38,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:26:38,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-30 01:26:38,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 01:26:38,336 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2023-08-30 01:26:38,336 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2023-08-30 01:26:38,376 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:26:38,376 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 01:26:38,506 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:26:38,506 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 01:26:38,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1351602700] [2023-08-30 01:26:38,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1351602700] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 01:26:38,506 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 01:26:38,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-08-30 01:26:38,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690304233] [2023-08-30 01:26:38,507 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 01:26:38,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 01:26:38,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 01:26:38,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 01:26:38,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-30 01:26:39,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 533 [2023-08-30 01:26:39,258 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 40 transitions, 100 flow. Second operand has 6 states, 6 states have (on average 220.0) internal successors, (1320), 6 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:26:39,258 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:26:39,258 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 533 [2023-08-30 01:26:39,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:26:40,096 INFO L130 PetriNetUnfolder]: 1918/2646 cut-off events. [2023-08-30 01:26:40,096 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 01:26:40,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5318 conditions, 2646 events. 1918/2646 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 13862 event pairs, 925 based on Foata normal form. 0/539 useless extension candidates. Maximal degree in co-relation 5309. Up to 1322 conditions per place. [2023-08-30 01:26:40,105 INFO L137 encePairwiseOnDemand]: 527/533 looper letters, 70 selfloop transitions, 11 changer transitions 0/83 dead transitions. [2023-08-30 01:26:40,105 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 83 transitions, 376 flow [2023-08-30 01:26:40,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 01:26:40,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 01:26:40,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1398 transitions. [2023-08-30 01:26:40,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4371482176360225 [2023-08-30 01:26:40,109 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1398 transitions. [2023-08-30 01:26:40,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1398 transitions. [2023-08-30 01:26:40,110 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:26:40,110 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1398 transitions. [2023-08-30 01:26:40,112 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 233.0) internal successors, (1398), 6 states have internal predecessors, (1398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:26:40,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 533.0) internal successors, (3731), 7 states have internal predecessors, (3731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:26:40,116 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 533.0) internal successors, (3731), 7 states have internal predecessors, (3731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:26:40,117 INFO L175 Difference]: Start difference. First operand has 44 places, 40 transitions, 100 flow. Second operand 6 states and 1398 transitions. [2023-08-30 01:26:40,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 83 transitions, 376 flow [2023-08-30 01:26:40,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 83 transitions, 375 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 01:26:40,118 INFO L231 Difference]: Finished difference. Result has 52 places, 49 transitions, 197 flow [2023-08-30 01:26:40,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=197, PETRI_PLACES=52, PETRI_TRANSITIONS=49} [2023-08-30 01:26:40,119 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 4 predicate places. [2023-08-30 01:26:40,119 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 49 transitions, 197 flow [2023-08-30 01:26:40,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 220.0) internal successors, (1320), 6 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:26:40,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:26:40,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 01:26:40,128 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-08-30 01:26:40,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 01:26:40,327 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-08-30 01:26:40,327 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:26:40,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1019271, now seen corresponding path program 1 times [2023-08-30 01:26:40,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 01:26:40,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1308292182] [2023-08-30 01:26:40,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:26:40,328 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 01:26:40,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 01:26:40,329 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 01:26:40,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-08-30 01:26:40,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:26:40,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 01:26:40,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 01:26:40,414 INFO L321 Elim1Store]: treesize reduction 50, result has 23.1 percent of original size [2023-08-30 01:26:40,415 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 29 [2023-08-30 01:26:40,449 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 01:26:40,450 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 01:26:40,450 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 01:26:40,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1308292182] [2023-08-30 01:26:40,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1308292182] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:26:40,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:26:40,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 01:26:40,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576306604] [2023-08-30 01:26:40,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:26:40,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 01:26:40,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 01:26:40,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 01:26:40,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 01:26:40,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 533 [2023-08-30 01:26:40,567 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 49 transitions, 197 flow. Second operand has 3 states, 3 states have (on average 225.0) internal successors, (675), 3 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:26:40,567 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:26:40,567 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 533 [2023-08-30 01:26:40,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:26:40,997 INFO L130 PetriNetUnfolder]: 1459/2045 cut-off events. [2023-08-30 01:26:40,997 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2023-08-30 01:26:40,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4145 conditions, 2045 events. 1459/2045 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 10602 event pairs, 694 based on Foata normal form. 0/459 useless extension candidates. Maximal degree in co-relation 4131. Up to 2035 conditions per place. [2023-08-30 01:26:41,005 INFO L137 encePairwiseOnDemand]: 530/533 looper letters, 42 selfloop transitions, 1 changer transitions 0/45 dead transitions. [2023-08-30 01:26:41,006 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 45 transitions, 257 flow [2023-08-30 01:26:41,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 01:26:41,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 01:26:41,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 709 transitions. [2023-08-30 01:26:41,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4434021263289556 [2023-08-30 01:26:41,008 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 709 transitions. [2023-08-30 01:26:41,008 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 709 transitions. [2023-08-30 01:26:41,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:26:41,008 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 709 transitions. [2023-08-30 01:26:41,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 236.33333333333334) internal successors, (709), 3 states have internal predecessors, (709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:26:41,011 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 533.0) internal successors, (2132), 4 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:26:41,012 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 533.0) internal successors, (2132), 4 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:26:41,012 INFO L175 Difference]: Start difference. First operand has 52 places, 49 transitions, 197 flow. Second operand 3 states and 709 transitions. [2023-08-30 01:26:41,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 45 transitions, 257 flow [2023-08-30 01:26:41,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 45 transitions, 239 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-08-30 01:26:41,017 INFO L231 Difference]: Finished difference. Result has 51 places, 45 transitions, 155 flow [2023-08-30 01:26:41,017 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=155, PETRI_PLACES=51, PETRI_TRANSITIONS=45} [2023-08-30 01:26:41,019 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 3 predicate places. [2023-08-30 01:26:41,019 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 45 transitions, 155 flow [2023-08-30 01:26:41,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 225.0) internal successors, (675), 3 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:26:41,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:26:41,020 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 01:26:41,045 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-08-30 01:26:41,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 01:26:41,228 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-08-30 01:26:41,228 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:26:41,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1019272, now seen corresponding path program 1 times [2023-08-30 01:26:41,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 01:26:41,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1407202496] [2023-08-30 01:26:41,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:26:41,229 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 01:26:41,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 01:26:41,235 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 01:26:41,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-08-30 01:26:41,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:26:41,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-30 01:26:41,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 01:26:41,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 01:26:41,361 INFO L321 Elim1Store]: treesize reduction 24, result has 44.2 percent of original size [2023-08-30 01:26:41,361 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 26 [2023-08-30 01:26:41,368 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-08-30 01:26:41,441 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 01:26:41,441 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 01:26:41,441 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 01:26:41,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1407202496] [2023-08-30 01:26:41,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1407202496] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:26:41,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:26:41,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 01:26:41,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058537670] [2023-08-30 01:26:41,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:26:41,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 01:26:41,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 01:26:41,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 01:26:41,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 01:26:41,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 224 out of 533 [2023-08-30 01:26:41,591 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 45 transitions, 155 flow. Second operand has 3 states, 3 states have (on average 225.0) internal successors, (675), 3 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:26:41,591 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:26:41,591 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 224 of 533 [2023-08-30 01:26:41,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:26:41,934 INFO L130 PetriNetUnfolder]: 981/1425 cut-off events. [2023-08-30 01:26:41,934 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2023-08-30 01:26:41,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2888 conditions, 1425 events. 981/1425 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 7335 event pairs, 460 based on Foata normal form. 0/391 useless extension candidates. Maximal degree in co-relation 2873. Up to 1415 conditions per place. [2023-08-30 01:26:41,939 INFO L137 encePairwiseOnDemand]: 530/533 looper letters, 38 selfloop transitions, 1 changer transitions 0/41 dead transitions. [2023-08-30 01:26:41,939 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 41 transitions, 211 flow [2023-08-30 01:26:41,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 01:26:41,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 01:26:41,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 707 transitions. [2023-08-30 01:26:41,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.442151344590369 [2023-08-30 01:26:41,944 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 707 transitions. [2023-08-30 01:26:41,944 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 707 transitions. [2023-08-30 01:26:41,944 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:26:41,944 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 707 transitions. [2023-08-30 01:26:41,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 235.66666666666666) internal successors, (707), 3 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:26:41,947 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 533.0) internal successors, (2132), 4 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:26:41,948 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 533.0) internal successors, (2132), 4 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:26:41,948 INFO L175 Difference]: Start difference. First operand has 51 places, 45 transitions, 155 flow. Second operand 3 states and 707 transitions. [2023-08-30 01:26:41,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 41 transitions, 211 flow [2023-08-30 01:26:41,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 41 transitions, 210 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 01:26:41,950 INFO L231 Difference]: Finished difference. Result has 50 places, 41 transitions, 134 flow [2023-08-30 01:26:41,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=50, PETRI_TRANSITIONS=41} [2023-08-30 01:26:41,952 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 2 predicate places. [2023-08-30 01:26:41,952 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 41 transitions, 134 flow [2023-08-30 01:26:41,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 225.0) internal successors, (675), 3 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:26:41,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:26:41,952 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 01:26:41,966 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-08-30 01:26:42,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 01:26:42,159 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-08-30 01:26:42,160 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:26:42,160 INFO L85 PathProgramCache]: Analyzing trace with hash 979544733, now seen corresponding path program 1 times [2023-08-30 01:26:42,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 01:26:42,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [913277118] [2023-08-30 01:26:42,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:26:42,160 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 01:26:42,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 01:26:42,161 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 01:26:42,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-08-30 01:26:42,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:26:42,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 01:26:42,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 01:26:42,251 INFO L321 Elim1Store]: treesize reduction 43, result has 33.8 percent of original size [2023-08-30 01:26:42,251 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 29 [2023-08-30 01:26:42,268 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 01:26:42,268 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 01:26:42,269 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 01:26:42,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [913277118] [2023-08-30 01:26:42,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [913277118] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:26:42,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:26:42,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 01:26:42,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265099269] [2023-08-30 01:26:42,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:26:42,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 01:26:42,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 01:26:42,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 01:26:42,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 01:26:42,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 533 [2023-08-30 01:26:42,369 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 41 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 222.66666666666666) internal successors, (668), 3 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:26:42,369 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:26:42,369 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 533 [2023-08-30 01:26:42,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:26:42,670 INFO L130 PetriNetUnfolder]: 915/1321 cut-off events. [2023-08-30 01:26:42,670 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2023-08-30 01:26:42,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2681 conditions, 1321 events. 915/1321 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 6693 event pairs, 428 based on Foata normal form. 0/385 useless extension candidates. Maximal degree in co-relation 2665. Up to 1311 conditions per place. [2023-08-30 01:26:42,676 INFO L137 encePairwiseOnDemand]: 530/533 looper letters, 36 selfloop transitions, 1 changer transitions 0/39 dead transitions. [2023-08-30 01:26:42,676 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 39 transitions, 204 flow [2023-08-30 01:26:42,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 01:26:42,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 01:26:42,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 696 transitions. [2023-08-30 01:26:42,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4352720450281426 [2023-08-30 01:26:42,678 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 696 transitions. [2023-08-30 01:26:42,678 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 696 transitions. [2023-08-30 01:26:42,678 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:26:42,678 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 696 transitions. [2023-08-30 01:26:42,679 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 232.0) internal successors, (696), 3 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:26:42,681 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 533.0) internal successors, (2132), 4 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:26:42,681 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 533.0) internal successors, (2132), 4 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:26:42,682 INFO L175 Difference]: Start difference. First operand has 50 places, 41 transitions, 134 flow. Second operand 3 states and 696 transitions. [2023-08-30 01:26:42,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 39 transitions, 204 flow [2023-08-30 01:26:42,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 39 transitions, 203 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 01:26:42,683 INFO L231 Difference]: Finished difference. Result has 49 places, 39 transitions, 131 flow [2023-08-30 01:26:42,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=49, PETRI_TRANSITIONS=39} [2023-08-30 01:26:42,683 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 1 predicate places. [2023-08-30 01:26:42,683 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 39 transitions, 131 flow [2023-08-30 01:26:42,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 222.66666666666666) internal successors, (668), 3 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:26:42,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:26:42,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 01:26:42,691 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-08-30 01:26:42,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 01:26:42,890 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-08-30 01:26:42,891 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:26:42,891 INFO L85 PathProgramCache]: Analyzing trace with hash 979544735, now seen corresponding path program 1 times [2023-08-30 01:26:42,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 01:26:42,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1090804385] [2023-08-30 01:26:42,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:26:42,891 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 01:26:42,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 01:26:42,892 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 01:26:42,894 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-08-30 01:26:42,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:26:42,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-30 01:26:42,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 01:26:43,003 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2023-08-30 01:26:43,004 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2023-08-30 01:26:43,123 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:26:43,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 01:26:43,252 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:26:43,252 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 01:26:43,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1090804385] [2023-08-30 01:26:43,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1090804385] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 01:26:43,252 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 01:26:43,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2023-08-30 01:26:43,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447703409] [2023-08-30 01:26:43,252 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 01:26:43,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 01:26:43,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 01:26:43,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 01:26:43,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-08-30 01:26:43,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 533 [2023-08-30 01:26:43,990 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 39 transitions, 131 flow. Second operand has 8 states, 8 states have (on average 216.25) internal successors, (1730), 8 states have internal predecessors, (1730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:26:43,990 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:26:43,990 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 533 [2023-08-30 01:26:43,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:26:44,633 INFO L130 PetriNetUnfolder]: 832/1200 cut-off events. [2023-08-30 01:26:44,634 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2023-08-30 01:26:44,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2439 conditions, 1200 events. 832/1200 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 6018 event pairs, 395 based on Foata normal form. 0/382 useless extension candidates. Maximal degree in co-relation 2422. Up to 600 conditions per place. [2023-08-30 01:26:44,640 INFO L137 encePairwiseOnDemand]: 529/533 looper letters, 58 selfloop transitions, 3 changer transitions 0/63 dead transitions. [2023-08-30 01:26:44,640 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 63 transitions, 311 flow [2023-08-30 01:26:44,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 01:26:44,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 01:26:44,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1136 transitions. [2023-08-30 01:26:44,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42626641651031894 [2023-08-30 01:26:44,643 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1136 transitions. [2023-08-30 01:26:44,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1136 transitions. [2023-08-30 01:26:44,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:26:44,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1136 transitions. [2023-08-30 01:26:44,645 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 227.2) internal successors, (1136), 5 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:26:44,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 533.0) internal successors, (3198), 6 states have internal predecessors, (3198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:26:44,649 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 533.0) internal successors, (3198), 6 states have internal predecessors, (3198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:26:44,649 INFO L175 Difference]: Start difference. First operand has 49 places, 39 transitions, 131 flow. Second operand 5 states and 1136 transitions. [2023-08-30 01:26:44,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 63 transitions, 311 flow [2023-08-30 01:26:44,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 63 transitions, 310 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 01:26:44,651 INFO L231 Difference]: Finished difference. Result has 50 places, 37 transitions, 132 flow [2023-08-30 01:26:44,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=132, PETRI_PLACES=50, PETRI_TRANSITIONS=37} [2023-08-30 01:26:44,653 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 2 predicate places. [2023-08-30 01:26:44,653 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 37 transitions, 132 flow [2023-08-30 01:26:44,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 216.25) internal successors, (1730), 8 states have internal predecessors, (1730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:26:44,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:26:44,654 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 01:26:44,681 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-08-30 01:26:44,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 01:26:44,862 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-08-30 01:26:44,868 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:26:44,868 INFO L85 PathProgramCache]: Analyzing trace with hash 301214978, now seen corresponding path program 2 times [2023-08-30 01:26:44,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 01:26:44,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1407768757] [2023-08-30 01:26:44,869 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 01:26:44,869 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 01:26:44,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 01:26:44,876 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 01:26:44,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-08-30 01:26:44,931 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 01:26:44,931 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 01:26:44,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-30 01:26:44,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 01:26:44,978 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2023-08-30 01:26:44,978 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2023-08-30 01:26:45,112 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:26:45,112 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 01:26:45,587 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:26:45,588 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 01:26:45,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1407768757] [2023-08-30 01:26:45,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1407768757] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 01:26:45,588 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 01:26:45,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2023-08-30 01:26:45,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050564289] [2023-08-30 01:26:45,588 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 01:26:45,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 01:26:45,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 01:26:45,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 01:26:45,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-08-30 01:26:48,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 533 [2023-08-30 01:26:48,621 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 37 transitions, 132 flow. Second operand has 12 states, 12 states have (on average 221.0) internal successors, (2652), 12 states have internal predecessors, (2652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:26:48,621 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:26:48,621 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 533 [2023-08-30 01:26:48,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:26:53,150 INFO L130 PetriNetUnfolder]: 3673/5314 cut-off events. [2023-08-30 01:26:53,150 INFO L131 PetriNetUnfolder]: For 42/42 co-relation queries the response was YES. [2023-08-30 01:26:53,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10694 conditions, 5314 events. 3673/5314 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 31457 event pairs, 1774 based on Foata normal form. 6/1709 useless extension candidates. Maximal degree in co-relation 10676. Up to 600 conditions per place. [2023-08-30 01:26:53,167 INFO L137 encePairwiseOnDemand]: 529/533 looper letters, 236 selfloop transitions, 12 changer transitions 0/250 dead transitions. [2023-08-30 01:26:53,167 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 250 transitions, 1140 flow [2023-08-30 01:26:53,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 01:26:53,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 01:26:53,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2894 transitions. [2023-08-30 01:26:53,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4524702939337086 [2023-08-30 01:26:53,173 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2894 transitions. [2023-08-30 01:26:53,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2894 transitions. [2023-08-30 01:26:53,174 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:26:53,175 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2894 transitions. [2023-08-30 01:26:53,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 241.16666666666666) internal successors, (2894), 12 states have internal predecessors, (2894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:26:53,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 533.0) internal successors, (6929), 13 states have internal predecessors, (6929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:26:53,185 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 533.0) internal successors, (6929), 13 states have internal predecessors, (6929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:26:53,185 INFO L175 Difference]: Start difference. First operand has 50 places, 37 transitions, 132 flow. Second operand 12 states and 2894 transitions. [2023-08-30 01:26:53,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 250 transitions, 1140 flow [2023-08-30 01:26:53,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 250 transitions, 1135 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 01:26:53,188 INFO L231 Difference]: Finished difference. Result has 65 places, 44 transitions, 225 flow [2023-08-30 01:26:53,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=225, PETRI_PLACES=65, PETRI_TRANSITIONS=44} [2023-08-30 01:26:53,189 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 17 predicate places. [2023-08-30 01:26:53,189 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 44 transitions, 225 flow [2023-08-30 01:26:53,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 221.0) internal successors, (2652), 12 states have internal predecessors, (2652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:26:53,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:26:53,190 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 01:26:53,197 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-08-30 01:26:53,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 01:26:53,397 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-08-30 01:26:53,397 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:26:53,397 INFO L85 PathProgramCache]: Analyzing trace with hash 301106743, now seen corresponding path program 1 times [2023-08-30 01:26:53,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 01:26:53,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [583694328] [2023-08-30 01:26:53,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:26:53,398 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 01:26:53,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 01:26:53,399 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 01:26:53,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-08-30 01:26:53,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:26:53,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 01:26:53,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 01:26:53,479 INFO L321 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2023-08-30 01:26:53,480 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 33 [2023-08-30 01:26:53,498 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 01:26:53,498 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 01:26:53,498 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 01:26:53,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [583694328] [2023-08-30 01:26:53,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [583694328] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:26:53,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:26:53,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 01:26:53,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554404457] [2023-08-30 01:26:53,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:26:53,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 01:26:53,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 01:26:53,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 01:26:53,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 01:26:53,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 533 [2023-08-30 01:26:53,686 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 44 transitions, 225 flow. Second operand has 4 states, 4 states have (on average 207.25) internal successors, (829), 4 states have internal predecessors, (829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:26:53,686 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:26:53,686 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 533 [2023-08-30 01:26:53,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:26:54,347 INFO L130 PetriNetUnfolder]: 2162/3173 cut-off events. [2023-08-30 01:26:54,348 INFO L131 PetriNetUnfolder]: For 56/56 co-relation queries the response was YES. [2023-08-30 01:26:54,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6457 conditions, 3173 events. 2162/3173 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 17336 event pairs, 990 based on Foata normal form. 0/1157 useless extension candidates. Maximal degree in co-relation 6432. Up to 3124 conditions per place. [2023-08-30 01:26:54,360 INFO L137 encePairwiseOnDemand]: 526/533 looper letters, 32 selfloop transitions, 5 changer transitions 0/39 dead transitions. [2023-08-30 01:26:54,360 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 39 transitions, 289 flow [2023-08-30 01:26:54,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 01:26:54,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 01:26:54,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 853 transitions. [2023-08-30 01:26:54,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.400093808630394 [2023-08-30 01:26:54,363 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 853 transitions. [2023-08-30 01:26:54,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 853 transitions. [2023-08-30 01:26:54,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:26:54,364 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 853 transitions. [2023-08-30 01:26:54,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 213.25) internal successors, (853), 4 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:26:54,377 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 533.0) internal successors, (2665), 5 states have internal predecessors, (2665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:26:54,378 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 533.0) internal successors, (2665), 5 states have internal predecessors, (2665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:26:54,379 INFO L175 Difference]: Start difference. First operand has 65 places, 44 transitions, 225 flow. Second operand 4 states and 853 transitions. [2023-08-30 01:26:54,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 39 transitions, 289 flow [2023-08-30 01:26:54,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 39 transitions, 264 flow, removed 7 selfloop flow, removed 4 redundant places. [2023-08-30 01:26:54,380 INFO L231 Difference]: Finished difference. Result has 59 places, 39 transitions, 200 flow [2023-08-30 01:26:54,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=200, PETRI_PLACES=59, PETRI_TRANSITIONS=39} [2023-08-30 01:26:54,382 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 11 predicate places. [2023-08-30 01:26:54,382 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 39 transitions, 200 flow [2023-08-30 01:26:54,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 207.25) internal successors, (829), 4 states have internal predecessors, (829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:26:54,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:26:54,383 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 01:26:54,395 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-08-30 01:26:54,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 01:26:54,590 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-08-30 01:26:54,590 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:26:54,590 INFO L85 PathProgramCache]: Analyzing trace with hash 301106744, now seen corresponding path program 1 times [2023-08-30 01:26:54,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 01:26:54,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [170882911] [2023-08-30 01:26:54,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:26:54,591 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 [2023-08-30 01:26:54,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 01:26:54,607 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 01:26:54,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-08-30 01:26:54,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:26:54,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 01:26:54,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 01:26:54,727 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:26:54,727 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 01:26:54,834 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2023-08-30 01:26:54,927 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:26:54,927 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 01:26:54,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [170882911] [2023-08-30 01:26:54,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [170882911] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 01:26:54,927 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 01:26:54,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2023-08-30 01:26:54,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741921167] [2023-08-30 01:26:54,927 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 01:26:54,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 01:26:54,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 01:26:54,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 01:26:54,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-30 01:26:56,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 533 [2023-08-30 01:26:56,563 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 39 transitions, 200 flow. Second operand has 8 states, 8 states have (on average 217.25) internal successors, (1738), 8 states have internal predecessors, (1738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:26:56,564 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:26:56,564 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 533 [2023-08-30 01:26:56,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:26:57,997 INFO L130 PetriNetUnfolder]: 2639/4055 cut-off events. [2023-08-30 01:26:57,998 INFO L131 PetriNetUnfolder]: For 154/154 co-relation queries the response was YES. [2023-08-30 01:26:58,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8232 conditions, 4055 events. 2639/4055 cut-off events. For 154/154 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 23787 event pairs, 920 based on Foata normal form. 0/1595 useless extension candidates. Maximal degree in co-relation 8206. Up to 2602 conditions per place. [2023-08-30 01:26:58,009 INFO L137 encePairwiseOnDemand]: 528/533 looper letters, 65 selfloop transitions, 10 changer transitions 0/77 dead transitions. [2023-08-30 01:26:58,009 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 77 transitions, 441 flow [2023-08-30 01:26:58,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 01:26:58,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 01:26:58,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1578 transitions. [2023-08-30 01:26:58,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4229429107477888 [2023-08-30 01:26:58,012 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1578 transitions. [2023-08-30 01:26:58,013 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1578 transitions. [2023-08-30 01:26:58,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:26:58,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1578 transitions. [2023-08-30 01:26:58,015 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 225.42857142857142) internal successors, (1578), 7 states have internal predecessors, (1578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:26:58,018 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 533.0) internal successors, (4264), 8 states have internal predecessors, (4264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:26:58,019 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 533.0) internal successors, (4264), 8 states have internal predecessors, (4264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:26:58,019 INFO L175 Difference]: Start difference. First operand has 59 places, 39 transitions, 200 flow. Second operand 7 states and 1578 transitions. [2023-08-30 01:26:58,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 77 transitions, 441 flow [2023-08-30 01:26:58,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 77 transitions, 434 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 01:26:58,021 INFO L231 Difference]: Finished difference. Result has 65 places, 42 transitions, 240 flow [2023-08-30 01:26:58,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=240, PETRI_PLACES=65, PETRI_TRANSITIONS=42} [2023-08-30 01:26:58,021 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 17 predicate places. [2023-08-30 01:26:58,021 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 42 transitions, 240 flow [2023-08-30 01:26:58,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 217.25) internal successors, (1738), 8 states have internal predecessors, (1738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:26:58,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:26:58,022 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:26:58,029 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-08-30 01:26:58,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 01:26:58,228 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-08-30 01:26:58,228 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:26:58,228 INFO L85 PathProgramCache]: Analyzing trace with hash 744375485, now seen corresponding path program 1 times [2023-08-30 01:26:58,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 01:26:58,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1623318671] [2023-08-30 01:26:58,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:26:58,229 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 01:26:58,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 01:26:58,230 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 01:26:58,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-08-30 01:26:58,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:26:58,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 21 conjunts are in the unsatisfiable core [2023-08-30 01:26:58,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 01:26:58,338 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2023-08-30 01:26:58,338 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2023-08-30 01:26:58,426 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 01:26:58,426 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 01:26:59,008 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 01:26:59,008 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 01:26:59,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1623318671] [2023-08-30 01:26:59,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1623318671] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 01:26:59,008 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 01:26:59,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2023-08-30 01:26:59,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145790651] [2023-08-30 01:26:59,008 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 01:26:59,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 01:26:59,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 01:26:59,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 01:26:59,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-08-30 01:27:07,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 533 [2023-08-30 01:27:07,154 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 42 transitions, 240 flow. Second operand has 8 states, 8 states have (on average 216.5) internal successors, (1732), 8 states have internal predecessors, (1732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:27:07,154 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:27:07,154 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 533 [2023-08-30 01:27:07,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:27:10,481 INFO L130 PetriNetUnfolder]: 1807/2905 cut-off events. [2023-08-30 01:27:10,481 INFO L131 PetriNetUnfolder]: For 812/812 co-relation queries the response was YES. [2023-08-30 01:27:10,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6619 conditions, 2905 events. 1807/2905 cut-off events. For 812/812 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 17709 event pairs, 1033 based on Foata normal form. 21/1707 useless extension candidates. Maximal degree in co-relation 6591. Up to 2539 conditions per place. [2023-08-30 01:27:10,516 INFO L137 encePairwiseOnDemand]: 521/533 looper letters, 54 selfloop transitions, 11 changer transitions 0/67 dead transitions. [2023-08-30 01:27:10,517 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 67 transitions, 435 flow [2023-08-30 01:27:10,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 01:27:10,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 01:27:10,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2006 transitions. [2023-08-30 01:27:10,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4181780279341255 [2023-08-30 01:27:10,522 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2006 transitions. [2023-08-30 01:27:10,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2006 transitions. [2023-08-30 01:27:10,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:27:10,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2006 transitions. [2023-08-30 01:27:10,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 222.88888888888889) internal successors, (2006), 9 states have internal predecessors, (2006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:27:10,529 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 533.0) internal successors, (5330), 10 states have internal predecessors, (5330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:27:10,530 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 533.0) internal successors, (5330), 10 states have internal predecessors, (5330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:27:10,530 INFO L175 Difference]: Start difference. First operand has 65 places, 42 transitions, 240 flow. Second operand 9 states and 2006 transitions. [2023-08-30 01:27:10,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 67 transitions, 435 flow [2023-08-30 01:27:10,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 67 transitions, 419 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-08-30 01:27:10,532 INFO L231 Difference]: Finished difference. Result has 72 places, 42 transitions, 281 flow [2023-08-30 01:27:10,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=281, PETRI_PLACES=72, PETRI_TRANSITIONS=42} [2023-08-30 01:27:10,533 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 24 predicate places. [2023-08-30 01:27:10,533 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 42 transitions, 281 flow [2023-08-30 01:27:10,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 216.5) internal successors, (1732), 8 states have internal predecessors, (1732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:27:10,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:27:10,534 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2023-08-30 01:27:10,556 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-08-30 01:27:10,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 01:27:10,741 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-08-30 01:27:10,741 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:27:10,741 INFO L85 PathProgramCache]: Analyzing trace with hash 2014715529, now seen corresponding path program 2 times [2023-08-30 01:27:10,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 01:27:10,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [995450874] [2023-08-30 01:27:10,742 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 01:27:10,742 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 [2023-08-30 01:27:10,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 01:27:10,743 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 01:27:10,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-08-30 01:27:10,818 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 01:27:10,818 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 01:27:10,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-30 01:27:10,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 01:27:10,860 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2023-08-30 01:27:10,861 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2023-08-30 01:27:10,943 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-08-30 01:27:10,943 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 01:27:10,943 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 01:27:10,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [995450874] [2023-08-30 01:27:10,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [995450874] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:27:10,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:27:10,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 01:27:10,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356581839] [2023-08-30 01:27:10,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:27:10,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 01:27:10,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 01:27:10,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 01:27:10,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 01:27:11,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 533 [2023-08-30 01:27:11,216 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 42 transitions, 281 flow. Second operand has 4 states, 4 states have (on average 222.5) internal successors, (890), 4 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:27:11,216 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:27:11,216 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 533 [2023-08-30 01:27:11,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:27:11,618 INFO L130 PetriNetUnfolder]: 533/995 cut-off events. [2023-08-30 01:27:11,618 INFO L131 PetriNetUnfolder]: For 961/961 co-relation queries the response was YES. [2023-08-30 01:27:11,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2307 conditions, 995 events. 533/995 cut-off events. For 961/961 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 5585 event pairs, 279 based on Foata normal form. 144/896 useless extension candidates. Maximal degree in co-relation 2277. Up to 946 conditions per place. [2023-08-30 01:27:11,621 INFO L137 encePairwiseOnDemand]: 523/533 looper letters, 26 selfloop transitions, 6 changer transitions 0/34 dead transitions. [2023-08-30 01:27:11,621 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 34 transitions, 293 flow [2023-08-30 01:27:11,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 01:27:11,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 01:27:11,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 908 transitions. [2023-08-30 01:27:11,624 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425891181988743 [2023-08-30 01:27:11,624 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 908 transitions. [2023-08-30 01:27:11,624 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 908 transitions. [2023-08-30 01:27:11,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:27:11,624 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 908 transitions. [2023-08-30 01:27:11,625 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:27:11,627 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 533.0) internal successors, (2665), 5 states have internal predecessors, (2665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:27:11,627 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 533.0) internal successors, (2665), 5 states have internal predecessors, (2665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:27:11,627 INFO L175 Difference]: Start difference. First operand has 72 places, 42 transitions, 281 flow. Second operand 4 states and 908 transitions. [2023-08-30 01:27:11,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 34 transitions, 293 flow [2023-08-30 01:27:11,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 34 transitions, 246 flow, removed 6 selfloop flow, removed 12 redundant places. [2023-08-30 01:27:11,629 INFO L231 Difference]: Finished difference. Result has 55 places, 34 transitions, 194 flow [2023-08-30 01:27:11,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=194, PETRI_PLACES=55, PETRI_TRANSITIONS=34} [2023-08-30 01:27:11,629 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 7 predicate places. [2023-08-30 01:27:11,630 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 34 transitions, 194 flow [2023-08-30 01:27:11,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 222.5) internal successors, (890), 4 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:27:11,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:27:11,630 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1] [2023-08-30 01:27:11,637 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-08-30 01:27:11,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 01:27:11,838 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-08-30 01:27:11,838 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:27:11,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1956872062, now seen corresponding path program 3 times [2023-08-30 01:27:11,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 01:27:11,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2064890370] [2023-08-30 01:27:11,838 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 01:27:11,839 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 01:27:11,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 01:27:11,839 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 01:27:11,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-08-30 01:27:11,965 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-08-30 01:27:11,965 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 01:27:11,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-30 01:27:11,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 01:27:12,013 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2023-08-30 01:27:12,013 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 14 treesize of output 29 [2023-08-30 01:27:12,258 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:27:12,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 01:27:13,904 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:27:13,904 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 01:27:13,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2064890370] [2023-08-30 01:27:13,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2064890370] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 01:27:13,904 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 01:27:13,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2023-08-30 01:27:13,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775463373] [2023-08-30 01:27:13,904 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 01:27:13,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-30 01:27:13,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 01:27:13,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-30 01:27:13,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2023-08-30 01:27:27,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 533 [2023-08-30 01:27:27,520 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 34 transitions, 194 flow. Second operand has 24 states, 24 states have (on average 221.0) internal successors, (5304), 24 states have internal predecessors, (5304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:27:27,520 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:27:27,520 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 533 [2023-08-30 01:27:27,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:27:42,292 INFO L130 PetriNetUnfolder]: 1201/2275 cut-off events. [2023-08-30 01:27:42,292 INFO L131 PetriNetUnfolder]: For 753/753 co-relation queries the response was YES. [2023-08-30 01:27:42,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5042 conditions, 2275 events. 1201/2275 cut-off events. For 753/753 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 13367 event pairs, 631 based on Foata normal form. 12/1860 useless extension candidates. Maximal degree in co-relation 5019. Up to 504 conditions per place. [2023-08-30 01:27:42,298 INFO L137 encePairwiseOnDemand]: 529/533 looper letters, 296 selfloop transitions, 24 changer transitions 0/322 dead transitions. [2023-08-30 01:27:42,298 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 322 transitions, 1810 flow [2023-08-30 01:27:42,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-30 01:27:42,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-30 01:27:42,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 5591 transitions. [2023-08-30 01:27:42,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43707004377736086 [2023-08-30 01:27:42,338 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 5591 transitions. [2023-08-30 01:27:42,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 5591 transitions. [2023-08-30 01:27:42,340 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:27:42,340 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 5591 transitions. [2023-08-30 01:27:42,347 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 232.95833333333334) internal successors, (5591), 24 states have internal predecessors, (5591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:27:42,361 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 533.0) internal successors, (13325), 25 states have internal predecessors, (13325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:27:42,362 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 533.0) internal successors, (13325), 25 states have internal predecessors, (13325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:27:42,362 INFO L175 Difference]: Start difference. First operand has 55 places, 34 transitions, 194 flow. Second operand 24 states and 5591 transitions. [2023-08-30 01:27:42,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 322 transitions, 1810 flow [2023-08-30 01:27:42,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 322 transitions, 1786 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 01:27:42,367 INFO L231 Difference]: Finished difference. Result has 89 places, 47 transitions, 376 flow [2023-08-30 01:27:42,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=376, PETRI_PLACES=89, PETRI_TRANSITIONS=47} [2023-08-30 01:27:42,367 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 41 predicate places. [2023-08-30 01:27:42,367 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 47 transitions, 376 flow [2023-08-30 01:27:42,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 221.0) internal successors, (5304), 24 states have internal predecessors, (5304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:27:42,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:27:42,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:27:42,391 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-08-30 01:27:42,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 01:27:42,577 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-08-30 01:27:42,578 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:27:42,578 INFO L85 PathProgramCache]: Analyzing trace with hash 332401590, now seen corresponding path program 1 times [2023-08-30 01:27:42,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 01:27:42,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [801178148] [2023-08-30 01:27:42,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:27:42,578 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 01:27:42,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 01:27:42,579 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 01:27:42,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-08-30 01:27:42,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:27:42,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 01:27:42,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 01:27:42,929 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 01:27:42,929 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 01:27:42,929 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 01:27:42,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [801178148] [2023-08-30 01:27:42,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [801178148] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:27:42,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:27:42,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 01:27:42,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522398510] [2023-08-30 01:27:42,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:27:42,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 01:27:42,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 01:27:42,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 01:27:42,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 01:27:42,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 533 [2023-08-30 01:27:42,992 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 47 transitions, 376 flow. Second operand has 5 states, 5 states have (on average 215.0) internal successors, (1075), 5 states have internal predecessors, (1075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:27:42,992 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:27:42,992 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 533 [2023-08-30 01:27:42,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:27:43,593 INFO L130 PetriNetUnfolder]: 1493/2798 cut-off events. [2023-08-30 01:27:43,593 INFO L131 PetriNetUnfolder]: For 462/462 co-relation queries the response was YES. [2023-08-30 01:27:43,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6329 conditions, 2798 events. 1493/2798 cut-off events. For 462/462 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 15494 event pairs, 504 based on Foata normal form. 0/2504 useless extension candidates. Maximal degree in co-relation 6293. Up to 1560 conditions per place. [2023-08-30 01:27:43,602 INFO L137 encePairwiseOnDemand]: 527/533 looper letters, 62 selfloop transitions, 6 changer transitions 0/68 dead transitions. [2023-08-30 01:27:43,602 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 68 transitions, 559 flow [2023-08-30 01:27:43,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 01:27:43,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 01:27:43,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1101 transitions. [2023-08-30 01:27:43,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4131332082551595 [2023-08-30 01:27:43,605 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1101 transitions. [2023-08-30 01:27:43,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1101 transitions. [2023-08-30 01:27:43,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:27:43,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1101 transitions. [2023-08-30 01:27:43,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 220.2) internal successors, (1101), 5 states have internal predecessors, (1101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:27:43,609 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 533.0) internal successors, (3198), 6 states have internal predecessors, (3198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:27:43,609 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 533.0) internal successors, (3198), 6 states have internal predecessors, (3198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:27:43,609 INFO L175 Difference]: Start difference. First operand has 89 places, 47 transitions, 376 flow. Second operand 5 states and 1101 transitions. [2023-08-30 01:27:43,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 68 transitions, 559 flow [2023-08-30 01:27:43,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 68 transitions, 511 flow, removed 13 selfloop flow, removed 10 redundant places. [2023-08-30 01:27:43,613 INFO L231 Difference]: Finished difference. Result has 86 places, 50 transitions, 363 flow [2023-08-30 01:27:43,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=363, PETRI_PLACES=86, PETRI_TRANSITIONS=50} [2023-08-30 01:27:43,614 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 38 predicate places. [2023-08-30 01:27:43,614 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 50 transitions, 363 flow [2023-08-30 01:27:43,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 215.0) internal successors, (1075), 5 states have internal predecessors, (1075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:27:43,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:27:43,614 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:27:43,624 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-08-30 01:27:43,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 01:27:43,822 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-08-30 01:27:43,823 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:27:43,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1035715232, now seen corresponding path program 2 times [2023-08-30 01:27:43,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 01:27:43,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [244847523] [2023-08-30 01:27:43,823 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 01:27:43,823 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 01:27:43,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 01:27:43,824 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 01:27:43,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-08-30 01:27:43,905 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 01:27:43,905 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 01:27:43,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 01:27:43,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 01:27:44,141 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 01:27:44,141 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 144 treesize of output 109 [2023-08-30 01:27:44,152 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 116 [2023-08-30 01:27:44,233 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 01:27:44,233 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 01:27:44,233 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 01:27:44,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [244847523] [2023-08-30 01:27:44,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [244847523] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:27:44,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:27:44,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 01:27:44,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486291067] [2023-08-30 01:27:44,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:27:44,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 01:27:44,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 01:27:44,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 01:27:44,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 01:27:44,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 533 [2023-08-30 01:27:44,287 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 50 transitions, 363 flow. Second operand has 5 states, 5 states have (on average 217.0) internal successors, (1085), 5 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:27:44,287 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:27:44,287 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 533 [2023-08-30 01:27:44,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:27:45,082 INFO L130 PetriNetUnfolder]: 2203/4127 cut-off events. [2023-08-30 01:27:45,083 INFO L131 PetriNetUnfolder]: For 3115/3115 co-relation queries the response was YES. [2023-08-30 01:27:45,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12293 conditions, 4127 events. 2203/4127 cut-off events. For 3115/3115 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 25156 event pairs, 840 based on Foata normal form. 40/3607 useless extension candidates. Maximal degree in co-relation 12254. Up to 2608 conditions per place. [2023-08-30 01:27:45,098 INFO L137 encePairwiseOnDemand]: 527/533 looper letters, 67 selfloop transitions, 8 changer transitions 0/75 dead transitions. [2023-08-30 01:27:45,098 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 75 transitions, 622 flow [2023-08-30 01:27:45,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 01:27:45,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 01:27:45,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1107 transitions. [2023-08-30 01:27:45,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4153846153846154 [2023-08-30 01:27:45,101 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1107 transitions. [2023-08-30 01:27:45,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1107 transitions. [2023-08-30 01:27:45,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:27:45,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1107 transitions. [2023-08-30 01:27:45,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 221.4) internal successors, (1107), 5 states have internal predecessors, (1107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:27:45,105 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 533.0) internal successors, (3198), 6 states have internal predecessors, (3198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:27:45,105 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 533.0) internal successors, (3198), 6 states have internal predecessors, (3198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:27:45,105 INFO L175 Difference]: Start difference. First operand has 86 places, 50 transitions, 363 flow. Second operand 5 states and 1107 transitions. [2023-08-30 01:27:45,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 75 transitions, 622 flow [2023-08-30 01:27:45,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 75 transitions, 593 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-08-30 01:27:45,116 INFO L231 Difference]: Finished difference. Result has 92 places, 55 transitions, 414 flow [2023-08-30 01:27:45,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=414, PETRI_PLACES=92, PETRI_TRANSITIONS=55} [2023-08-30 01:27:45,117 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 44 predicate places. [2023-08-30 01:27:45,117 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 55 transitions, 414 flow [2023-08-30 01:27:45,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 217.0) internal successors, (1085), 5 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:27:45,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:27:45,117 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:27:45,141 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-08-30 01:27:45,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 01:27:45,325 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-08-30 01:27:45,326 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:27:45,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1767787162, now seen corresponding path program 3 times [2023-08-30 01:27:45,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 01:27:45,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [660327225] [2023-08-30 01:27:45,326 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 01:27:45,326 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 01:27:45,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 01:27:45,327 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 01:27:45,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-08-30 01:27:45,402 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-30 01:27:45,402 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 01:27:45,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 01:27:45,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 01:27:45,731 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 01:27:45,731 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 01:27:45,731 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 01:27:45,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [660327225] [2023-08-30 01:27:45,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [660327225] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:27:45,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:27:45,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 01:27:45,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193126611] [2023-08-30 01:27:45,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:27:45,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 01:27:45,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 01:27:45,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 01:27:45,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 01:27:45,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 533 [2023-08-30 01:27:45,789 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 55 transitions, 414 flow. Second operand has 5 states, 5 states have (on average 214.0) internal successors, (1070), 5 states have internal predecessors, (1070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:27:45,789 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:27:45,789 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 533 [2023-08-30 01:27:45,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:27:46,801 INFO L130 PetriNetUnfolder]: 2403/4447 cut-off events. [2023-08-30 01:27:46,801 INFO L131 PetriNetUnfolder]: For 7211/7211 co-relation queries the response was YES. [2023-08-30 01:27:46,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15936 conditions, 4447 events. 2403/4447 cut-off events. For 7211/7211 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 27079 event pairs, 880 based on Foata normal form. 80/4247 useless extension candidates. Maximal degree in co-relation 15894. Up to 2368 conditions per place. [2023-08-30 01:27:46,818 INFO L137 encePairwiseOnDemand]: 527/533 looper letters, 64 selfloop transitions, 15 changer transitions 0/79 dead transitions. [2023-08-30 01:27:46,818 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 79 transitions, 679 flow [2023-08-30 01:27:46,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 01:27:46,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 01:27:46,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1097 transitions. [2023-08-30 01:27:46,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4116322701688555 [2023-08-30 01:27:46,821 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1097 transitions. [2023-08-30 01:27:46,821 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1097 transitions. [2023-08-30 01:27:46,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:27:46,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1097 transitions. [2023-08-30 01:27:46,823 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 219.4) internal successors, (1097), 5 states have internal predecessors, (1097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:27:46,824 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 533.0) internal successors, (3198), 6 states have internal predecessors, (3198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:27:46,824 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 533.0) internal successors, (3198), 6 states have internal predecessors, (3198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:27:46,825 INFO L175 Difference]: Start difference. First operand has 92 places, 55 transitions, 414 flow. Second operand 5 states and 1097 transitions. [2023-08-30 01:27:46,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 79 transitions, 679 flow [2023-08-30 01:27:46,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 79 transitions, 655 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-08-30 01:27:46,838 INFO L231 Difference]: Finished difference. Result has 98 places, 62 transitions, 510 flow [2023-08-30 01:27:46,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=510, PETRI_PLACES=98, PETRI_TRANSITIONS=62} [2023-08-30 01:27:46,838 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 50 predicate places. [2023-08-30 01:27:46,838 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 62 transitions, 510 flow [2023-08-30 01:27:46,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 214.0) internal successors, (1070), 5 states have internal predecessors, (1070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:27:46,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:27:46,839 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:27:46,846 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-08-30 01:27:47,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 01:27:47,044 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-08-30 01:27:47,044 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:27:47,044 INFO L85 PathProgramCache]: Analyzing trace with hash 899407164, now seen corresponding path program 4 times [2023-08-30 01:27:47,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 01:27:47,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2143985061] [2023-08-30 01:27:47,045 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 01:27:47,045 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 01:27:47,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 01:27:47,046 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 01:27:47,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-08-30 01:27:47,134 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 01:27:47,135 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 01:27:47,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 01:27:47,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 01:27:47,410 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 01:27:47,412 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 01:27:47,413 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 01:27:47,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2143985061] [2023-08-30 01:27:47,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2143985061] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:27:47,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:27:47,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 01:27:47,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001560461] [2023-08-30 01:27:47,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:27:47,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 01:27:47,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 01:27:47,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 01:27:47,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 01:27:47,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 533 [2023-08-30 01:27:47,495 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 62 transitions, 510 flow. Second operand has 5 states, 5 states have (on average 214.0) internal successors, (1070), 5 states have internal predecessors, (1070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:27:47,495 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:27:47,495 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 533 [2023-08-30 01:27:47,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:27:48,468 INFO L130 PetriNetUnfolder]: 2323/4367 cut-off events. [2023-08-30 01:27:48,469 INFO L131 PetriNetUnfolder]: For 11516/11516 co-relation queries the response was YES. [2023-08-30 01:27:48,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17139 conditions, 4367 events. 2323/4367 cut-off events. For 11516/11516 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 26855 event pairs, 1000 based on Foata normal form. 80/4167 useless extension candidates. Maximal degree in co-relation 17094. Up to 3488 conditions per place. [2023-08-30 01:27:48,488 INFO L137 encePairwiseOnDemand]: 527/533 looper letters, 62 selfloop transitions, 16 changer transitions 0/78 dead transitions. [2023-08-30 01:27:48,489 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 78 transitions, 755 flow [2023-08-30 01:27:48,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 01:27:48,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 01:27:48,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1091 transitions. [2023-08-30 01:27:48,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40938086303939963 [2023-08-30 01:27:48,491 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1091 transitions. [2023-08-30 01:27:48,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1091 transitions. [2023-08-30 01:27:48,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:27:48,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1091 transitions. [2023-08-30 01:27:48,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 218.2) internal successors, (1091), 5 states have internal predecessors, (1091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:27:48,493 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 533.0) internal successors, (3198), 6 states have internal predecessors, (3198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:27:48,494 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 533.0) internal successors, (3198), 6 states have internal predecessors, (3198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:27:48,494 INFO L175 Difference]: Start difference. First operand has 98 places, 62 transitions, 510 flow. Second operand 5 states and 1091 transitions. [2023-08-30 01:27:48,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 78 transitions, 755 flow [2023-08-30 01:27:48,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 78 transitions, 736 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-08-30 01:27:48,521 INFO L231 Difference]: Finished difference. Result has 103 places, 69 transitions, 614 flow [2023-08-30 01:27:48,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=494, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=614, PETRI_PLACES=103, PETRI_TRANSITIONS=69} [2023-08-30 01:27:48,521 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 55 predicate places. [2023-08-30 01:27:48,521 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 69 transitions, 614 flow [2023-08-30 01:27:48,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 214.0) internal successors, (1070), 5 states have internal predecessors, (1070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:27:48,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:27:48,521 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:27:48,529 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Ended with exit code 0 [2023-08-30 01:27:48,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 01:27:48,728 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-08-30 01:27:48,729 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:27:48,729 INFO L85 PathProgramCache]: Analyzing trace with hash 999680256, now seen corresponding path program 5 times [2023-08-30 01:27:48,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 01:27:48,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1676865974] [2023-08-30 01:27:48,729 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 01:27:48,729 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 01:27:48,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 01:27:48,730 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 01:27:48,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-08-30 01:27:48,826 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 01:27:48,826 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 01:27:48,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 01:27:48,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 01:27:49,114 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 01:27:49,115 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 151 treesize of output 116 [2023-08-30 01:27:49,121 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 116 treesize of output 114 [2023-08-30 01:27:49,127 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 112 [2023-08-30 01:27:49,165 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 01:27:49,165 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 144 treesize of output 109 [2023-08-30 01:27:49,177 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 116 [2023-08-30 01:27:49,267 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 01:27:49,268 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 01:27:49,268 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 01:27:49,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1676865974] [2023-08-30 01:27:49,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1676865974] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:27:49,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:27:49,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 01:27:49,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39861847] [2023-08-30 01:27:49,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:27:49,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 01:27:49,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 01:27:49,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 01:27:49,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 01:27:49,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 533 [2023-08-30 01:27:49,340 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 69 transitions, 614 flow. Second operand has 5 states, 5 states have (on average 217.0) internal successors, (1085), 5 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:27:49,340 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:27:49,340 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 533 [2023-08-30 01:27:49,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:27:50,127 INFO L130 PetriNetUnfolder]: 2343/4427 cut-off events. [2023-08-30 01:27:50,127 INFO L131 PetriNetUnfolder]: For 15411/15411 co-relation queries the response was YES. [2023-08-30 01:27:50,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19381 conditions, 4427 events. 2343/4427 cut-off events. For 15411/15411 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 27553 event pairs, 760 based on Foata normal form. 40/4187 useless extension candidates. Maximal degree in co-relation 19334. Up to 2408 conditions per place. [2023-08-30 01:27:50,148 INFO L137 encePairwiseOnDemand]: 527/533 looper letters, 65 selfloop transitions, 19 changer transitions 0/84 dead transitions. [2023-08-30 01:27:50,148 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 84 transitions, 836 flow [2023-08-30 01:27:50,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 01:27:50,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 01:27:50,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1110 transitions. [2023-08-30 01:27:50,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4165103189493433 [2023-08-30 01:27:50,150 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1110 transitions. [2023-08-30 01:27:50,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1110 transitions. [2023-08-30 01:27:50,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:27:50,150 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1110 transitions. [2023-08-30 01:27:50,151 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 222.0) internal successors, (1110), 5 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:27:50,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 533.0) internal successors, (3198), 6 states have internal predecessors, (3198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:27:50,153 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 533.0) internal successors, (3198), 6 states have internal predecessors, (3198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:27:50,153 INFO L175 Difference]: Start difference. First operand has 103 places, 69 transitions, 614 flow. Second operand 5 states and 1110 transitions. [2023-08-30 01:27:50,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 84 transitions, 836 flow [2023-08-30 01:27:50,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 84 transitions, 780 flow, removed 16 selfloop flow, removed 2 redundant places. [2023-08-30 01:27:50,205 INFO L231 Difference]: Finished difference. Result has 106 places, 71 transitions, 621 flow [2023-08-30 01:27:50,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=558, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=621, PETRI_PLACES=106, PETRI_TRANSITIONS=71} [2023-08-30 01:27:50,206 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 58 predicate places. [2023-08-30 01:27:50,206 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 71 transitions, 621 flow [2023-08-30 01:27:50,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 217.0) internal successors, (1085), 5 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:27:50,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:27:50,206 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:27:50,214 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-08-30 01:27:50,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 01:27:50,411 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-08-30 01:27:50,411 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:27:50,412 INFO L85 PathProgramCache]: Analyzing trace with hash -250457530, now seen corresponding path program 6 times [2023-08-30 01:27:50,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 01:27:50,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [52507185] [2023-08-30 01:27:50,412 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 01:27:50,412 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 01:27:50,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 01:27:50,413 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 01:27:50,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-08-30 01:27:50,499 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-08-30 01:27:50,499 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 01:27:50,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 01:27:50,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 01:27:50,781 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 01:27:50,782 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 144 treesize of output 109 [2023-08-30 01:27:50,797 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 116 [2023-08-30 01:27:50,869 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 01:27:50,869 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 01:27:50,869 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 01:27:50,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [52507185] [2023-08-30 01:27:50,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [52507185] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:27:50,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:27:50,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 01:27:50,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392107539] [2023-08-30 01:27:50,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:27:50,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 01:27:50,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 01:27:50,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 01:27:50,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 01:27:50,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 533 [2023-08-30 01:27:50,950 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 71 transitions, 621 flow. Second operand has 5 states, 5 states have (on average 217.0) internal successors, (1085), 5 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:27:50,950 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:27:50,950 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 533 [2023-08-30 01:27:50,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:27:51,821 INFO L130 PetriNetUnfolder]: 2323/4287 cut-off events. [2023-08-30 01:27:51,821 INFO L131 PetriNetUnfolder]: For 14197/14197 co-relation queries the response was YES. [2023-08-30 01:27:51,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18102 conditions, 4287 events. 2323/4287 cut-off events. For 14197/14197 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 25701 event pairs, 980 based on Foata normal form. 40/4047 useless extension candidates. Maximal degree in co-relation 18054. Up to 3348 conditions per place. [2023-08-30 01:27:51,849 INFO L137 encePairwiseOnDemand]: 527/533 looper letters, 65 selfloop transitions, 17 changer transitions 0/82 dead transitions. [2023-08-30 01:27:51,849 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 82 transitions, 833 flow [2023-08-30 01:27:51,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 01:27:51,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 01:27:51,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1106 transitions. [2023-08-30 01:27:51,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4150093808630394 [2023-08-30 01:27:51,851 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1106 transitions. [2023-08-30 01:27:51,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1106 transitions. [2023-08-30 01:27:51,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:27:51,851 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1106 transitions. [2023-08-30 01:27:51,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 221.2) internal successors, (1106), 5 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:27:51,854 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 533.0) internal successors, (3198), 6 states have internal predecessors, (3198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:27:51,854 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 533.0) internal successors, (3198), 6 states have internal predecessors, (3198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:27:51,854 INFO L175 Difference]: Start difference. First operand has 106 places, 71 transitions, 621 flow. Second operand 5 states and 1106 transitions. [2023-08-30 01:27:51,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 82 transitions, 833 flow [2023-08-30 01:27:51,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 82 transitions, 783 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-08-30 01:27:51,959 INFO L231 Difference]: Finished difference. Result has 108 places, 73 transitions, 638 flow [2023-08-30 01:27:51,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=575, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=638, PETRI_PLACES=108, PETRI_TRANSITIONS=73} [2023-08-30 01:27:51,959 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 60 predicate places. [2023-08-30 01:27:51,959 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 73 transitions, 638 flow [2023-08-30 01:27:51,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 217.0) internal successors, (1085), 5 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:27:51,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:27:51,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:27:51,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2023-08-30 01:27:52,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 01:27:52,167 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-08-30 01:27:52,167 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:27:52,167 INFO L85 PathProgramCache]: Analyzing trace with hash -2146431135, now seen corresponding path program 1 times [2023-08-30 01:27:52,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 01:27:52,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [379428596] [2023-08-30 01:27:52,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:27:52,168 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 01:27:52,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 01:27:52,169 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 01:27:52,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-08-30 01:27:52,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:27:52,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 01:27:52,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 01:27:52,700 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 01:27:52,700 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 151 treesize of output 116 [2023-08-30 01:27:52,707 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 116 treesize of output 114 [2023-08-30 01:27:52,713 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 112 [2023-08-30 01:27:52,744 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 01:27:52,744 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 144 treesize of output 109 [2023-08-30 01:27:52,754 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 116 [2023-08-30 01:27:52,818 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 01:27:52,818 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 01:27:53,096 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 01:27:53,096 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 378 treesize of output 308 [2023-08-30 01:27:53,108 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 308 treesize of output 304 [2023-08-30 01:27:53,115 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 304 treesize of output 298 [2023-08-30 01:27:54,198 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 01:27:54,198 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 01:27:54,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [379428596] [2023-08-30 01:27:54,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [379428596] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 01:27:54,198 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 01:27:54,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-08-30 01:27:54,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659953970] [2023-08-30 01:27:54,198 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 01:27:54,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 01:27:54,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 01:27:54,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 01:27:54,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-08-30 01:27:54,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 533 [2023-08-30 01:27:54,719 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 73 transitions, 638 flow. Second operand has 10 states, 10 states have (on average 212.3) internal successors, (2123), 10 states have internal predecessors, (2123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:27:54,719 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:27:54,719 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 533 [2023-08-30 01:27:54,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:27:57,660 INFO L130 PetriNetUnfolder]: 5503/10427 cut-off events. [2023-08-30 01:27:57,661 INFO L131 PetriNetUnfolder]: For 25671/25671 co-relation queries the response was YES. [2023-08-30 01:27:57,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40423 conditions, 10427 events. 5503/10427 cut-off events. For 25671/25671 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 77224 event pairs, 760 based on Foata normal form. 240/9907 useless extension candidates. Maximal degree in co-relation 40374. Up to 3441 conditions per place. [2023-08-30 01:27:57,746 INFO L137 encePairwiseOnDemand]: 527/533 looper letters, 117 selfloop transitions, 42 changer transitions 0/159 dead transitions. [2023-08-30 01:27:57,746 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 159 transitions, 1303 flow [2023-08-30 01:27:57,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 01:27:57,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 01:27:57,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3048 transitions. [2023-08-30 01:27:57,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4084695792012865 [2023-08-30 01:27:57,750 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3048 transitions. [2023-08-30 01:27:57,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3048 transitions. [2023-08-30 01:27:57,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:27:57,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3048 transitions. [2023-08-30 01:27:57,753 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 217.71428571428572) internal successors, (3048), 14 states have internal predecessors, (3048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:27:57,757 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 533.0) internal successors, (7995), 15 states have internal predecessors, (7995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:27:57,757 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 533.0) internal successors, (7995), 15 states have internal predecessors, (7995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:27:57,758 INFO L175 Difference]: Start difference. First operand has 108 places, 73 transitions, 638 flow. Second operand 14 states and 3048 transitions. [2023-08-30 01:27:57,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 159 transitions, 1303 flow [2023-08-30 01:27:57,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 159 transitions, 1240 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-08-30 01:27:57,866 INFO L231 Difference]: Finished difference. Result has 125 places, 94 transitions, 869 flow [2023-08-30 01:27:57,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=599, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=869, PETRI_PLACES=125, PETRI_TRANSITIONS=94} [2023-08-30 01:27:57,866 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 77 predicate places. [2023-08-30 01:27:57,867 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 94 transitions, 869 flow [2023-08-30 01:27:57,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 212.3) internal successors, (2123), 10 states have internal predecessors, (2123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:27:57,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:27:57,867 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:27:57,875 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-08-30 01:27:58,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 01:27:58,069 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-08-30 01:27:58,069 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:27:58,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1882627481, now seen corresponding path program 2 times [2023-08-30 01:27:58,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 01:27:58,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1548030470] [2023-08-30 01:27:58,069 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 01:27:58,069 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 01:27:58,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 01:27:58,071 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 01:27:58,072 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 (23)] Waiting until timeout for monitored process [2023-08-30 01:27:58,217 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 01:27:58,217 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 01:27:58,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 01:27:58,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 01:27:58,495 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 01:27:58,496 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 01:27:58,711 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 01:27:58,711 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 164 treesize of output 129 [2023-08-30 01:27:58,724 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 127 [2023-08-30 01:27:58,748 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 127 treesize of output 125 [2023-08-30 01:27:58,986 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 01:27:58,986 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 158 treesize of output 123 [2023-08-30 01:27:59,006 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 135 treesize of output 131 [2023-08-30 01:27:59,843 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 01:27:59,843 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 01:27:59,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1548030470] [2023-08-30 01:27:59,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1548030470] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 01:27:59,843 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 01:27:59,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-08-30 01:27:59,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529790872] [2023-08-30 01:27:59,844 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 01:27:59,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 01:27:59,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 01:27:59,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 01:27:59,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-08-30 01:28:00,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 533 [2023-08-30 01:28:00,029 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 94 transitions, 869 flow. Second operand has 10 states, 10 states have (on average 214.3) internal successors, (2143), 10 states have internal predecessors, (2143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:28:00,029 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:28:00,029 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 533 [2023-08-30 01:28:00,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:28:03,216 INFO L130 PetriNetUnfolder]: 5743/10987 cut-off events. [2023-08-30 01:28:03,216 INFO L131 PetriNetUnfolder]: For 56469/56469 co-relation queries the response was YES. [2023-08-30 01:28:03,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53750 conditions, 10987 events. 5743/10987 cut-off events. For 56469/56469 co-relation queries the response was YES. Maximal size of possible extension queue 265. Compared 81481 event pairs, 880 based on Foata normal form. 240/10707 useless extension candidates. Maximal degree in co-relation 53694. Up to 3761 conditions per place. [2023-08-30 01:28:03,306 INFO L137 encePairwiseOnDemand]: 527/533 looper letters, 138 selfloop transitions, 56 changer transitions 0/194 dead transitions. [2023-08-30 01:28:03,306 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 194 transitions, 1894 flow [2023-08-30 01:28:03,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-30 01:28:03,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-30 01:28:03,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3510 transitions. [2023-08-30 01:28:03,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4115853658536585 [2023-08-30 01:28:03,313 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3510 transitions. [2023-08-30 01:28:03,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3510 transitions. [2023-08-30 01:28:03,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:28:03,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3510 transitions. [2023-08-30 01:28:03,317 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 219.375) internal successors, (3510), 16 states have internal predecessors, (3510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:28:03,322 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 533.0) internal successors, (9061), 17 states have internal predecessors, (9061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:28:03,322 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 533.0) internal successors, (9061), 17 states have internal predecessors, (9061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:28:03,322 INFO L175 Difference]: Start difference. First operand has 125 places, 94 transitions, 869 flow. Second operand 16 states and 3510 transitions. [2023-08-30 01:28:03,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 194 transitions, 1894 flow [2023-08-30 01:28:03,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 194 transitions, 1726 flow, removed 58 selfloop flow, removed 4 redundant places. [2023-08-30 01:28:03,774 INFO L231 Difference]: Finished difference. Result has 145 places, 120 transitions, 1200 flow [2023-08-30 01:28:03,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=763, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1200, PETRI_PLACES=145, PETRI_TRANSITIONS=120} [2023-08-30 01:28:03,775 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 97 predicate places. [2023-08-30 01:28:03,775 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 120 transitions, 1200 flow [2023-08-30 01:28:03,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 214.3) internal successors, (2143), 10 states have internal predecessors, (2143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:28:03,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:28:03,775 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:28:03,785 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2023-08-30 01:28:03,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 01:28:03,983 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-08-30 01:28:03,984 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:28:03,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1088265703, now seen corresponding path program 3 times [2023-08-30 01:28:03,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 01:28:03,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1336755326] [2023-08-30 01:28:03,984 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 01:28:03,984 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 01:28:03,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 01:28:03,985 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 01:28:03,987 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-08-30 01:28:04,127 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-30 01:28:04,127 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 01:28:04,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 01:28:04,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 01:28:04,397 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 01:28:04,398 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 01:28:04,614 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 01:28:04,614 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 164 treesize of output 129 [2023-08-30 01:28:04,620 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 127 [2023-08-30 01:28:04,626 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 127 treesize of output 125 [2023-08-30 01:28:04,832 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 01:28:04,832 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 158 treesize of output 123 [2023-08-30 01:28:04,850 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 135 treesize of output 131 [2023-08-30 01:28:05,505 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 01:28:05,505 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 01:28:05,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1336755326] [2023-08-30 01:28:05,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1336755326] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 01:28:05,506 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 01:28:05,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-08-30 01:28:05,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504743332] [2023-08-30 01:28:05,506 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 01:28:05,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 01:28:05,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 01:28:05,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 01:28:05,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-08-30 01:28:05,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 533 [2023-08-30 01:28:05,833 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 120 transitions, 1200 flow. Second operand has 10 states, 10 states have (on average 213.2) internal successors, (2132), 10 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:28:05,833 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:28:05,833 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 533 [2023-08-30 01:28:05,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:28:08,707 INFO L130 PetriNetUnfolder]: 5443/10087 cut-off events. [2023-08-30 01:28:08,707 INFO L131 PetriNetUnfolder]: For 66386/66386 co-relation queries the response was YES. [2023-08-30 01:28:08,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53799 conditions, 10087 events. 5443/10087 cut-off events. For 66386/66386 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 71004 event pairs, 844 based on Foata normal form. 400/9967 useless extension candidates. Maximal degree in co-relation 53734. Up to 3361 conditions per place. [2023-08-30 01:28:08,777 INFO L137 encePairwiseOnDemand]: 527/533 looper letters, 114 selfloop transitions, 67 changer transitions 0/181 dead transitions. [2023-08-30 01:28:08,777 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 181 transitions, 1875 flow [2023-08-30 01:28:08,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 01:28:08,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 01:28:08,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2844 transitions. [2023-08-30 01:28:08,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4104488382161928 [2023-08-30 01:28:08,781 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2844 transitions. [2023-08-30 01:28:08,781 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2844 transitions. [2023-08-30 01:28:08,781 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:28:08,781 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2844 transitions. [2023-08-30 01:28:08,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 218.76923076923077) internal successors, (2844), 13 states have internal predecessors, (2844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:28:08,787 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 533.0) internal successors, (7462), 14 states have internal predecessors, (7462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:28:08,788 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 533.0) internal successors, (7462), 14 states have internal predecessors, (7462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:28:08,788 INFO L175 Difference]: Start difference. First operand has 145 places, 120 transitions, 1200 flow. Second operand 13 states and 2844 transitions. [2023-08-30 01:28:08,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 181 transitions, 1875 flow [2023-08-30 01:28:09,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 181 transitions, 1739 flow, removed 53 selfloop flow, removed 3 redundant places. [2023-08-30 01:28:09,426 INFO L231 Difference]: Finished difference. Result has 156 places, 127 transitions, 1331 flow [2023-08-30 01:28:09,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=1090, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1331, PETRI_PLACES=156, PETRI_TRANSITIONS=127} [2023-08-30 01:28:09,428 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 108 predicate places. [2023-08-30 01:28:09,428 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 127 transitions, 1331 flow [2023-08-30 01:28:09,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 213.2) internal successors, (2132), 10 states have internal predecessors, (2132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:28:09,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:28:09,429 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:28:09,436 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2023-08-30 01:28:09,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 01:28:09,636 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-08-30 01:28:09,637 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:28:09,637 INFO L85 PathProgramCache]: Analyzing trace with hash 380084327, now seen corresponding path program 4 times [2023-08-30 01:28:09,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 01:28:09,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [575039830] [2023-08-30 01:28:09,637 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 01:28:09,637 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 01:28:09,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 01:28:09,638 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 01:28:09,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-08-30 01:28:09,751 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 01:28:09,752 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 01:28:09,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 01:28:09,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 01:28:10,045 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 01:28:10,046 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 151 treesize of output 116 [2023-08-30 01:28:10,052 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 116 treesize of output 114 [2023-08-30 01:28:10,058 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 112 [2023-08-30 01:28:10,086 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 01:28:10,086 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 144 treesize of output 109 [2023-08-30 01:28:10,096 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 116 [2023-08-30 01:28:10,184 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 01:28:10,184 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 01:28:10,504 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 01:28:10,505 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 378 treesize of output 308 [2023-08-30 01:28:10,518 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 308 treesize of output 302 [2023-08-30 01:28:10,526 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 302 treesize of output 298 [2023-08-30 01:28:11,418 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 01:28:11,418 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 01:28:11,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [575039830] [2023-08-30 01:28:11,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [575039830] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 01:28:11,419 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 01:28:11,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-08-30 01:28:11,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513043018] [2023-08-30 01:28:11,419 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 01:28:11,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 01:28:11,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 01:28:11,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 01:28:11,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-08-30 01:28:12,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 533 [2023-08-30 01:28:12,019 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 127 transitions, 1331 flow. Second operand has 10 states, 10 states have (on average 211.1) internal successors, (2111), 10 states have internal predecessors, (2111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:28:12,019 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:28:12,019 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 533 [2023-08-30 01:28:12,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:28:15,273 INFO L130 PetriNetUnfolder]: 6123/11487 cut-off events. [2023-08-30 01:28:15,273 INFO L131 PetriNetUnfolder]: For 66791/66791 co-relation queries the response was YES. [2023-08-30 01:28:15,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60602 conditions, 11487 events. 6123/11487 cut-off events. For 66791/66791 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 84149 event pairs, 1500 based on Foata normal form. 200/10927 useless extension candidates. Maximal degree in co-relation 60534. Up to 5188 conditions per place. [2023-08-30 01:28:15,345 INFO L137 encePairwiseOnDemand]: 527/533 looper letters, 129 selfloop transitions, 57 changer transitions 0/186 dead transitions. [2023-08-30 01:28:15,345 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 186 transitions, 2001 flow [2023-08-30 01:28:15,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 01:28:15,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 01:28:15,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2805 transitions. [2023-08-30 01:28:15,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40482032039255306 [2023-08-30 01:28:15,349 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2805 transitions. [2023-08-30 01:28:15,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2805 transitions. [2023-08-30 01:28:15,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:28:15,350 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2805 transitions. [2023-08-30 01:28:15,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 215.76923076923077) internal successors, (2805), 13 states have internal predecessors, (2805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:28:15,378 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 533.0) internal successors, (7462), 14 states have internal predecessors, (7462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:28:15,379 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 533.0) internal successors, (7462), 14 states have internal predecessors, (7462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:28:15,379 INFO L175 Difference]: Start difference. First operand has 156 places, 127 transitions, 1331 flow. Second operand 13 states and 2805 transitions. [2023-08-30 01:28:15,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 186 transitions, 2001 flow [2023-08-30 01:28:16,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 186 transitions, 1882 flow, removed 20 selfloop flow, removed 6 redundant places. [2023-08-30 01:28:16,079 INFO L231 Difference]: Finished difference. Result has 168 places, 141 transitions, 1518 flow [2023-08-30 01:28:16,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=1224, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1518, PETRI_PLACES=168, PETRI_TRANSITIONS=141} [2023-08-30 01:28:16,080 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 120 predicate places. [2023-08-30 01:28:16,080 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 141 transitions, 1518 flow [2023-08-30 01:28:16,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 211.1) internal successors, (2111), 10 states have internal predecessors, (2111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:28:16,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:28:16,080 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:28:16,088 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2023-08-30 01:28:16,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 01:28:16,288 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-08-30 01:28:16,288 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:28:16,288 INFO L85 PathProgramCache]: Analyzing trace with hash -37460335, now seen corresponding path program 1 times [2023-08-30 01:28:16,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 01:28:16,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1128379127] [2023-08-30 01:28:16,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:28:16,290 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 01:28:16,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 01:28:16,291 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 01:28:16,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-08-30 01:28:16,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:28:16,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 01:28:16,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 01:28:16,667 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 01:28:16,668 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 01:28:16,950 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 01:28:16,950 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 158 treesize of output 123 [2023-08-30 01:28:16,965 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 135 treesize of output 131 [2023-08-30 01:28:17,715 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 01:28:17,715 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 164 treesize of output 129 [2023-08-30 01:28:17,725 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 127 [2023-08-30 01:28:17,735 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 127 treesize of output 125 [2023-08-30 01:28:17,980 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 01:28:17,981 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 01:28:17,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1128379127] [2023-08-30 01:28:17,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1128379127] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 01:28:17,981 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 01:28:17,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-08-30 01:28:17,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139272464] [2023-08-30 01:28:17,982 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 01:28:17,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 01:28:17,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 01:28:17,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 01:28:17,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-08-30 01:28:18,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 533 [2023-08-30 01:28:18,257 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 141 transitions, 1518 flow. Second operand has 10 states, 10 states have (on average 212.3) internal successors, (2123), 10 states have internal predecessors, (2123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:28:18,258 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:28:18,258 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 533 [2023-08-30 01:28:18,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:28:22,387 INFO L130 PetriNetUnfolder]: 6403/12287 cut-off events. [2023-08-30 01:28:22,388 INFO L131 PetriNetUnfolder]: For 71451/71451 co-relation queries the response was YES. [2023-08-30 01:28:22,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67928 conditions, 12287 events. 6403/12287 cut-off events. For 71451/71451 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 94052 event pairs, 1640 based on Foata normal form. 80/11727 useless extension candidates. Maximal degree in co-relation 67854. Up to 5408 conditions per place. [2023-08-30 01:28:22,486 INFO L137 encePairwiseOnDemand]: 527/533 looper letters, 139 selfloop transitions, 66 changer transitions 0/205 dead transitions. [2023-08-30 01:28:22,487 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 205 transitions, 2250 flow [2023-08-30 01:28:22,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 01:28:22,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 01:28:22,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3041 transitions. [2023-08-30 01:28:22,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4075314928973466 [2023-08-30 01:28:22,491 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3041 transitions. [2023-08-30 01:28:22,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3041 transitions. [2023-08-30 01:28:22,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:28:22,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3041 transitions. [2023-08-30 01:28:22,494 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 217.21428571428572) internal successors, (3041), 14 states have internal predecessors, (3041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:28:22,497 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 533.0) internal successors, (7995), 15 states have internal predecessors, (7995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:28:22,498 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 533.0) internal successors, (7995), 15 states have internal predecessors, (7995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:28:22,498 INFO L175 Difference]: Start difference. First operand has 168 places, 141 transitions, 1518 flow. Second operand 14 states and 3041 transitions. [2023-08-30 01:28:22,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 205 transitions, 2250 flow [2023-08-30 01:28:23,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 205 transitions, 2143 flow, removed 29 selfloop flow, removed 4 redundant places. [2023-08-30 01:28:23,783 INFO L231 Difference]: Finished difference. Result has 183 places, 152 transitions, 1747 flow [2023-08-30 01:28:23,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=1443, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1747, PETRI_PLACES=183, PETRI_TRANSITIONS=152} [2023-08-30 01:28:23,784 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 135 predicate places. [2023-08-30 01:28:23,784 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 152 transitions, 1747 flow [2023-08-30 01:28:23,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 212.3) internal successors, (2123), 10 states have internal predecessors, (2123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:28:23,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:28:23,785 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:28:23,793 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Ended with exit code 0 [2023-08-30 01:28:23,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 01:28:23,993 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-08-30 01:28:23,993 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:28:23,993 INFO L85 PathProgramCache]: Analyzing trace with hash 2036223251, now seen corresponding path program 2 times [2023-08-30 01:28:23,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 01:28:23,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1586906075] [2023-08-30 01:28:23,994 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 01:28:23,994 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 01:28:23,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 01:28:23,995 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 01:28:23,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-08-30 01:28:24,187 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 01:28:24,187 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 01:28:24,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 01:28:24,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 01:28:24,457 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 01:28:24,457 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 01:28:24,675 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 01:28:24,675 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 164 treesize of output 129 [2023-08-30 01:28:24,682 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 127 [2023-08-30 01:28:24,688 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 127 treesize of output 125 [2023-08-30 01:28:24,860 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 01:28:24,860 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 158 treesize of output 123 [2023-08-30 01:28:24,881 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 135 treesize of output 131 [2023-08-30 01:28:25,572 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 01:28:25,573 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 01:28:25,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1586906075] [2023-08-30 01:28:25,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1586906075] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 01:28:25,573 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 01:28:25,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-08-30 01:28:25,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79649545] [2023-08-30 01:28:25,573 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 01:28:25,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 01:28:25,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 01:28:25,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 01:28:25,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-08-30 01:28:26,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 533 [2023-08-30 01:28:26,275 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 152 transitions, 1747 flow. Second operand has 10 states, 10 states have (on average 212.1) internal successors, (2121), 10 states have internal predecessors, (2121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:28:26,275 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:28:26,275 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 533 [2023-08-30 01:28:26,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:28:31,233 INFO L130 PetriNetUnfolder]: 7563/14007 cut-off events. [2023-08-30 01:28:31,234 INFO L131 PetriNetUnfolder]: For 107151/107151 co-relation queries the response was YES. [2023-08-30 01:28:31,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87934 conditions, 14007 events. 7563/14007 cut-off events. For 107151/107151 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 105269 event pairs, 1480 based on Foata normal form. 160/13247 useless extension candidates. Maximal degree in co-relation 87854. Up to 5488 conditions per place. [2023-08-30 01:28:31,352 INFO L137 encePairwiseOnDemand]: 527/533 looper letters, 134 selfloop transitions, 94 changer transitions 0/228 dead transitions. [2023-08-30 01:28:31,352 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 228 transitions, 2768 flow [2023-08-30 01:28:31,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-30 01:28:31,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-30 01:28:31,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3473 transitions. [2023-08-30 01:28:31,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4072467166979362 [2023-08-30 01:28:31,357 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3473 transitions. [2023-08-30 01:28:31,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3473 transitions. [2023-08-30 01:28:31,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:28:31,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3473 transitions. [2023-08-30 01:28:31,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 217.0625) internal successors, (3473), 16 states have internal predecessors, (3473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:28:31,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 533.0) internal successors, (9061), 17 states have internal predecessors, (9061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:28:31,364 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 533.0) internal successors, (9061), 17 states have internal predecessors, (9061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:28:31,364 INFO L175 Difference]: Start difference. First operand has 183 places, 152 transitions, 1747 flow. Second operand 16 states and 3473 transitions. [2023-08-30 01:28:31,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 228 transitions, 2768 flow [2023-08-30 01:28:33,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 228 transitions, 2632 flow, removed 52 selfloop flow, removed 5 redundant places. [2023-08-30 01:28:33,324 INFO L231 Difference]: Finished difference. Result has 193 places, 177 transitions, 2245 flow [2023-08-30 01:28:33,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=1636, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2245, PETRI_PLACES=193, PETRI_TRANSITIONS=177} [2023-08-30 01:28:33,325 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 145 predicate places. [2023-08-30 01:28:33,325 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 177 transitions, 2245 flow [2023-08-30 01:28:33,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 212.1) internal successors, (2121), 10 states have internal predecessors, (2121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:28:33,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:28:33,325 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:28:33,334 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2023-08-30 01:28:33,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 01:28:33,534 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-08-30 01:28:33,534 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:28:33,534 INFO L85 PathProgramCache]: Analyzing trace with hash 711736033, now seen corresponding path program 5 times [2023-08-30 01:28:33,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 01:28:33,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2021347039] [2023-08-30 01:28:33,535 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 01:28:33,535 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 01:28:33,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 01:28:33,536 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 01:28:33,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2023-08-30 01:28:33,665 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 01:28:33,665 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 01:28:33,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 01:28:33,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 01:28:33,894 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 01:28:33,894 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 144 treesize of output 109 [2023-08-30 01:28:33,904 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 116 [2023-08-30 01:28:33,977 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 01:28:33,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 01:28:34,251 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 01:28:34,252 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 378 treesize of output 308 [2023-08-30 01:28:34,261 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 308 treesize of output 302 [2023-08-30 01:28:34,269 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 302 treesize of output 298 [2023-08-30 01:28:34,679 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 01:28:34,679 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 01:28:34,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2021347039] [2023-08-30 01:28:34,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2021347039] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 01:28:34,679 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 01:28:34,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-08-30 01:28:34,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725986713] [2023-08-30 01:28:34,680 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 01:28:34,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 01:28:34,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 01:28:34,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 01:28:34,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-08-30 01:28:34,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 533 [2023-08-30 01:28:34,864 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 177 transitions, 2245 flow. Second operand has 10 states, 10 states have (on average 212.1) internal successors, (2121), 10 states have internal predecessors, (2121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:28:34,864 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:28:34,864 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 533 [2023-08-30 01:28:34,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:28:38,942 INFO L130 PetriNetUnfolder]: 9303/17307 cut-off events. [2023-08-30 01:28:38,942 INFO L131 PetriNetUnfolder]: For 128921/128921 co-relation queries the response was YES. [2023-08-30 01:28:39,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110972 conditions, 17307 events. 9303/17307 cut-off events. For 128921/128921 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 136337 event pairs, 1660 based on Foata normal form. 160/15987 useless extension candidates. Maximal degree in co-relation 110894. Up to 8108 conditions per place. [2023-08-30 01:28:39,099 INFO L137 encePairwiseOnDemand]: 527/533 looper letters, 179 selfloop transitions, 66 changer transitions 0/245 dead transitions. [2023-08-30 01:28:39,099 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 245 transitions, 3406 flow [2023-08-30 01:28:39,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 01:28:39,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 01:28:39,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2374 transitions. [2023-08-30 01:28:39,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.404912161009722 [2023-08-30 01:28:39,102 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2374 transitions. [2023-08-30 01:28:39,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2374 transitions. [2023-08-30 01:28:39,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:28:39,103 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2374 transitions. [2023-08-30 01:28:39,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 215.8181818181818) internal successors, (2374), 11 states have internal predecessors, (2374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:28:39,107 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 533.0) internal successors, (6396), 12 states have internal predecessors, (6396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:28:39,108 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 533.0) internal successors, (6396), 12 states have internal predecessors, (6396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:28:39,108 INFO L175 Difference]: Start difference. First operand has 193 places, 177 transitions, 2245 flow. Second operand 11 states and 2374 transitions. [2023-08-30 01:28:39,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 245 transitions, 3406 flow [2023-08-30 01:28:45,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 245 transitions, 2980 flow, removed 197 selfloop flow, removed 5 redundant places. [2023-08-30 01:28:45,202 INFO L231 Difference]: Finished difference. Result has 204 places, 193 transitions, 2332 flow [2023-08-30 01:28:45,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=1951, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2332, PETRI_PLACES=204, PETRI_TRANSITIONS=193} [2023-08-30 01:28:45,202 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 156 predicate places. [2023-08-30 01:28:45,202 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 193 transitions, 2332 flow [2023-08-30 01:28:45,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 212.1) internal successors, (2121), 10 states have internal predecessors, (2121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:28:45,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:28:45,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:28:45,213 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2023-08-30 01:28:45,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 01:28:45,414 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-08-30 01:28:45,414 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:28:45,414 INFO L85 PathProgramCache]: Analyzing trace with hash -2107701323, now seen corresponding path program 6 times [2023-08-30 01:28:45,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 01:28:45,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [577670023] [2023-08-30 01:28:45,415 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 01:28:45,415 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 01:28:45,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 01:28:45,416 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 01:28:45,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2023-08-30 01:28:45,586 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-30 01:28:45,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 01:28:45,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 01:28:45,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 01:28:46,083 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 01:28:46,084 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 01:28:46,407 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 01:28:46,407 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 158 treesize of output 123 [2023-08-30 01:28:46,418 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 135 treesize of output 131 [2023-08-30 01:28:47,167 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 01:28:47,167 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 164 treesize of output 129 [2023-08-30 01:28:47,177 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 127 [2023-08-30 01:28:47,186 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 127 treesize of output 125 [2023-08-30 01:28:47,492 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 01:28:47,493 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 01:28:47,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [577670023] [2023-08-30 01:28:47,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [577670023] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 01:28:47,493 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 01:28:47,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-08-30 01:28:47,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153069892] [2023-08-30 01:28:47,493 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 01:28:47,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 01:28:47,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 01:28:47,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 01:28:47,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-08-30 01:28:48,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 533 [2023-08-30 01:28:48,176 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 193 transitions, 2332 flow. Second operand has 10 states, 10 states have (on average 211.3) internal successors, (2113), 10 states have internal predecessors, (2113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:28:48,176 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:28:48,176 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 533 [2023-08-30 01:28:48,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:28:53,556 INFO L130 PetriNetUnfolder]: 9603/18247 cut-off events. [2023-08-30 01:28:53,556 INFO L131 PetriNetUnfolder]: For 116199/116199 co-relation queries the response was YES. [2023-08-30 01:28:53,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102858 conditions, 18247 events. 9603/18247 cut-off events. For 116199/116199 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 147918 event pairs, 2140 based on Foata normal form. 480/18047 useless extension candidates. Maximal degree in co-relation 102774. Up to 10628 conditions per place. [2023-08-30 01:28:53,717 INFO L137 encePairwiseOnDemand]: 527/533 looper letters, 169 selfloop transitions, 97 changer transitions 0/266 dead transitions. [2023-08-30 01:28:53,718 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 266 transitions, 3446 flow [2023-08-30 01:28:53,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 01:28:53,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 01:28:53,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3017 transitions. [2023-08-30 01:28:53,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40431519699812385 [2023-08-30 01:28:53,722 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3017 transitions. [2023-08-30 01:28:53,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3017 transitions. [2023-08-30 01:28:53,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:28:53,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3017 transitions. [2023-08-30 01:28:53,739 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 215.5) internal successors, (3017), 14 states have internal predecessors, (3017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:28:53,756 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 533.0) internal successors, (7995), 15 states have internal predecessors, (7995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:28:53,757 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 533.0) internal successors, (7995), 15 states have internal predecessors, (7995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:28:53,757 INFO L175 Difference]: Start difference. First operand has 204 places, 193 transitions, 2332 flow. Second operand 14 states and 3017 transitions. [2023-08-30 01:28:53,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 266 transitions, 3446 flow [2023-08-30 01:28:56,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 266 transitions, 3298 flow, removed 35 selfloop flow, removed 4 redundant places. [2023-08-30 01:28:56,249 INFO L231 Difference]: Finished difference. Result has 217 places, 223 transitions, 2904 flow [2023-08-30 01:28:56,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=2222, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2904, PETRI_PLACES=217, PETRI_TRANSITIONS=223} [2023-08-30 01:28:56,253 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 169 predicate places. [2023-08-30 01:28:56,254 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 223 transitions, 2904 flow [2023-08-30 01:28:56,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 211.3) internal successors, (2113), 10 states have internal predecessors, (2113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:28:56,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:28:56,254 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:28:56,265 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2023-08-30 01:28:56,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 01:28:56,462 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-08-30 01:28:56,462 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:28:56,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1419159067, now seen corresponding path program 7 times [2023-08-30 01:28:56,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 01:28:56,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [323673759] [2023-08-30 01:28:56,463 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-30 01:28:56,463 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 01:28:56,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 01:28:56,464 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 01:28:56,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2023-08-30 01:28:56,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:28:56,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 01:28:56,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 01:28:56,849 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 01:28:56,850 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 151 treesize of output 116 [2023-08-30 01:28:56,856 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 116 treesize of output 114 [2023-08-30 01:28:56,865 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 112 [2023-08-30 01:28:56,917 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 01:28:56,917 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 144 treesize of output 109 [2023-08-30 01:28:56,928 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 116 [2023-08-30 01:28:57,011 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 01:28:57,011 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 01:28:57,280 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 01:28:57,281 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 378 treesize of output 308 [2023-08-30 01:28:57,291 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 308 treesize of output 304 [2023-08-30 01:28:57,300 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 304 treesize of output 298 [2023-08-30 01:28:58,370 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 01:28:58,370 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 01:28:58,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [323673759] [2023-08-30 01:28:58,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [323673759] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 01:28:58,370 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 01:28:58,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-08-30 01:28:58,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025683723] [2023-08-30 01:28:58,371 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 01:28:58,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 01:28:58,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 01:28:58,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 01:28:58,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-08-30 01:28:58,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 533 [2023-08-30 01:28:58,884 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 223 transitions, 2904 flow. Second operand has 10 states, 10 states have (on average 211.1) internal successors, (2111), 10 states have internal predecessors, (2111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:28:58,885 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:28:58,885 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 533 [2023-08-30 01:28:58,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:29:04,952 INFO L130 PetriNetUnfolder]: 9563/18047 cut-off events. [2023-08-30 01:29:04,953 INFO L131 PetriNetUnfolder]: For 119027/119027 co-relation queries the response was YES. [2023-08-30 01:29:05,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107022 conditions, 18047 events. 9563/18047 cut-off events. For 119027/119027 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 144800 event pairs, 2100 based on Foata normal form. 200/17567 useless extension candidates. Maximal degree in co-relation 106934. Up to 10308 conditions per place. [2023-08-30 01:29:05,341 INFO L137 encePairwiseOnDemand]: 527/533 looper letters, 176 selfloop transitions, 91 changer transitions 0/267 dead transitions. [2023-08-30 01:29:05,342 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 267 transitions, 3658 flow [2023-08-30 01:29:05,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 01:29:05,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 01:29:05,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2805 transitions. [2023-08-30 01:29:05,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40482032039255306 [2023-08-30 01:29:05,346 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2805 transitions. [2023-08-30 01:29:05,346 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2805 transitions. [2023-08-30 01:29:05,346 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:29:05,346 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2805 transitions. [2023-08-30 01:29:05,349 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 215.76923076923077) internal successors, (2805), 13 states have internal predecessors, (2805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:29:05,352 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 533.0) internal successors, (7462), 14 states have internal predecessors, (7462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:29:05,353 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 533.0) internal successors, (7462), 14 states have internal predecessors, (7462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:29:05,353 INFO L175 Difference]: Start difference. First operand has 217 places, 223 transitions, 2904 flow. Second operand 13 states and 2805 transitions. [2023-08-30 01:29:05,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 267 transitions, 3658 flow [2023-08-30 01:29:08,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 267 transitions, 3450 flow, removed 82 selfloop flow, removed 4 redundant places. [2023-08-30 01:29:08,590 INFO L231 Difference]: Finished difference. Result has 226 places, 225 transitions, 2928 flow [2023-08-30 01:29:08,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=2662, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2928, PETRI_PLACES=226, PETRI_TRANSITIONS=225} [2023-08-30 01:29:08,591 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 178 predicate places. [2023-08-30 01:29:08,591 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 225 transitions, 2928 flow [2023-08-30 01:29:08,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 211.1) internal successors, (2111), 10 states have internal predecessors, (2111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:29:08,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:29:08,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:29:08,600 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Ended with exit code 0 [2023-08-30 01:29:08,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 01:29:08,800 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-08-30 01:29:08,800 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:29:08,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1161032399, now seen corresponding path program 8 times [2023-08-30 01:29:08,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 01:29:08,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1145892591] [2023-08-30 01:29:08,800 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 01:29:08,801 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 01:29:08,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 01:29:08,802 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 01:29:08,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2023-08-30 01:29:08,971 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 01:29:08,972 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 01:29:08,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 01:29:08,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 01:29:09,385 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 01:29:09,386 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 144 treesize of output 109 [2023-08-30 01:29:09,400 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 116 [2023-08-30 01:29:09,489 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 01:29:09,489 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 01:29:09,794 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 01:29:09,794 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 378 treesize of output 308 [2023-08-30 01:29:09,806 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 308 treesize of output 304 [2023-08-30 01:29:09,814 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 304 treesize of output 298 [2023-08-30 01:29:10,884 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 01:29:10,884 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 01:29:10,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1145892591] [2023-08-30 01:29:10,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1145892591] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 01:29:10,884 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 01:29:10,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-08-30 01:29:10,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334058226] [2023-08-30 01:29:10,885 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 01:29:10,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 01:29:10,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 01:29:10,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 01:29:10,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-08-30 01:29:11,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 533 [2023-08-30 01:29:11,697 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 225 transitions, 2928 flow. Second operand has 10 states, 10 states have (on average 211.1) internal successors, (2111), 10 states have internal predecessors, (2111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:29:11,698 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:29:11,698 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 533 [2023-08-30 01:29:11,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:29:17,235 INFO L130 PetriNetUnfolder]: 9603/18007 cut-off events. [2023-08-30 01:29:17,236 INFO L131 PetriNetUnfolder]: For 121282/121282 co-relation queries the response was YES. [2023-08-30 01:29:17,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109183 conditions, 18007 events. 9603/18007 cut-off events. For 121282/121282 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 143877 event pairs, 2160 based on Foata normal form. 160/17487 useless extension candidates. Maximal degree in co-relation 109094. Up to 10648 conditions per place. [2023-08-30 01:29:17,390 INFO L137 encePairwiseOnDemand]: 527/533 looper letters, 170 selfloop transitions, 89 changer transitions 0/259 dead transitions. [2023-08-30 01:29:17,390 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 259 transitions, 3647 flow [2023-08-30 01:29:17,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 01:29:17,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 01:29:17,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2789 transitions. [2023-08-30 01:29:17,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40251118487516235 [2023-08-30 01:29:17,394 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2789 transitions. [2023-08-30 01:29:17,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2789 transitions. [2023-08-30 01:29:17,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:29:17,394 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2789 transitions. [2023-08-30 01:29:17,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 214.53846153846155) internal successors, (2789), 13 states have internal predecessors, (2789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:29:17,399 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 533.0) internal successors, (7462), 14 states have internal predecessors, (7462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:29:17,399 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 533.0) internal successors, (7462), 14 states have internal predecessors, (7462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:29:17,399 INFO L175 Difference]: Start difference. First operand has 226 places, 225 transitions, 2928 flow. Second operand 13 states and 2789 transitions. [2023-08-30 01:29:17,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 259 transitions, 3647 flow [2023-08-30 01:29:19,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 259 transitions, 3484 flow, removed 14 selfloop flow, removed 7 redundant places. [2023-08-30 01:29:20,000 INFO L231 Difference]: Finished difference. Result has 234 places, 229 transitions, 3032 flow [2023-08-30 01:29:20,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=2758, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3032, PETRI_PLACES=234, PETRI_TRANSITIONS=229} [2023-08-30 01:29:20,000 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 186 predicate places. [2023-08-30 01:29:20,000 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 229 transitions, 3032 flow [2023-08-30 01:29:20,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 211.1) internal successors, (2111), 10 states have internal predecessors, (2111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:29:20,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:29:20,001 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:29:20,009 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Ended with exit code 0 [2023-08-30 01:29:20,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 01:29:20,209 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-08-30 01:29:20,210 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:29:20,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1680810820, now seen corresponding path program 3 times [2023-08-30 01:29:20,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 01:29:20,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [659574206] [2023-08-30 01:29:20,210 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 01:29:20,210 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 01:29:20,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 01:29:20,211 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 01:29:20,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2023-08-30 01:29:20,379 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-30 01:29:20,379 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 01:29:20,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 01:29:20,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 01:29:20,865 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 01:29:20,865 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 01:29:21,222 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 01:29:21,222 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 164 treesize of output 129 [2023-08-30 01:29:21,228 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 127 [2023-08-30 01:29:21,235 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 127 treesize of output 125 [2023-08-30 01:29:21,423 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 01:29:21,423 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 158 treesize of output 123 [2023-08-30 01:29:21,436 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 135 treesize of output 131 [2023-08-30 01:29:22,051 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 01:29:22,052 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 01:29:22,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [659574206] [2023-08-30 01:29:22,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [659574206] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 01:29:22,052 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 01:29:22,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-08-30 01:29:22,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022502568] [2023-08-30 01:29:22,052 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 01:29:22,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 01:29:22,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 01:29:22,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 01:29:22,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-08-30 01:29:22,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 533 [2023-08-30 01:29:22,399 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 229 transitions, 3032 flow. Second operand has 12 states, 12 states have (on average 210.25) internal successors, (2523), 12 states have internal predecessors, (2523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:29:22,399 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:29:22,399 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 533 [2023-08-30 01:29:22,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:29:27,731 INFO L130 PetriNetUnfolder]: 9743/18587 cut-off events. [2023-08-30 01:29:27,732 INFO L131 PetriNetUnfolder]: For 136131/136131 co-relation queries the response was YES. [2023-08-30 01:29:27,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112386 conditions, 18587 events. 9743/18587 cut-off events. For 136131/136131 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 151165 event pairs, 2440 based on Foata normal form. 80/18067 useless extension candidates. Maximal degree in co-relation 112294. Up to 7928 conditions per place. [2023-08-30 01:29:27,906 INFO L137 encePairwiseOnDemand]: 527/533 looper letters, 204 selfloop transitions, 90 changer transitions 0/294 dead transitions. [2023-08-30 01:29:27,906 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 294 transitions, 3837 flow [2023-08-30 01:29:27,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-30 01:29:27,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-30 01:29:27,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3428 transitions. [2023-08-30 01:29:27,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40196998123827393 [2023-08-30 01:29:27,911 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3428 transitions. [2023-08-30 01:29:27,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3428 transitions. [2023-08-30 01:29:27,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:29:27,912 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3428 transitions. [2023-08-30 01:29:27,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 214.25) internal successors, (3428), 16 states have internal predecessors, (3428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:29:27,917 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 533.0) internal successors, (9061), 17 states have internal predecessors, (9061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:29:27,918 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 533.0) internal successors, (9061), 17 states have internal predecessors, (9061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:29:27,918 INFO L175 Difference]: Start difference. First operand has 234 places, 229 transitions, 3032 flow. Second operand 16 states and 3428 transitions. [2023-08-30 01:29:27,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 294 transitions, 3837 flow [2023-08-30 01:29:30,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 294 transitions, 3708 flow, removed 11 selfloop flow, removed 8 redundant places. [2023-08-30 01:29:30,607 INFO L231 Difference]: Finished difference. Result has 247 places, 236 transitions, 3177 flow [2023-08-30 01:29:30,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=2903, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3177, PETRI_PLACES=247, PETRI_TRANSITIONS=236} [2023-08-30 01:29:30,607 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 199 predicate places. [2023-08-30 01:29:30,607 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 236 transitions, 3177 flow [2023-08-30 01:29:30,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 210.25) internal successors, (2523), 12 states have internal predecessors, (2523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:29:30,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:29:30,608 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:29:30,618 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2023-08-30 01:29:30,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 01:29:30,816 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-08-30 01:29:30,817 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:29:30,817 INFO L85 PathProgramCache]: Analyzing trace with hash 350963898, now seen corresponding path program 4 times [2023-08-30 01:29:30,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 01:29:30,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [399353002] [2023-08-30 01:29:30,817 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 01:29:30,817 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 [2023-08-30 01:29:30,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 01:29:30,818 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 01:29:30,820 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 (33)] Waiting until timeout for monitored process [2023-08-30 01:29:30,971 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 01:29:30,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 01:29:30,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 01:29:30,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 01:29:31,245 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 01:29:31,246 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 151 treesize of output 116 [2023-08-30 01:29:31,250 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 116 treesize of output 114 [2023-08-30 01:29:31,255 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 112 [2023-08-30 01:29:31,293 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 01:29:31,293 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 144 treesize of output 109 [2023-08-30 01:29:31,310 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 116 [2023-08-30 01:29:31,635 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 01:29:31,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 01:29:32,004 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 01:29:32,005 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 378 treesize of output 308 [2023-08-30 01:29:32,019 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 308 treesize of output 304 [2023-08-30 01:29:32,028 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 304 treesize of output 298 [2023-08-30 01:29:33,078 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 01:29:33,079 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 01:29:33,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [399353002] [2023-08-30 01:29:33,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [399353002] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 01:29:33,079 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 01:29:33,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-08-30 01:29:33,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134586238] [2023-08-30 01:29:33,080 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 01:29:33,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 01:29:33,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 01:29:33,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 01:29:33,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2023-08-30 01:29:34,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 533 [2023-08-30 01:29:34,688 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 236 transitions, 3177 flow. Second operand has 12 states, 12 states have (on average 210.91666666666666) internal successors, (2531), 12 states have internal predecessors, (2531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:29:34,688 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:29:34,689 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 533 [2023-08-30 01:29:34,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:29:43,268 INFO L130 PetriNetUnfolder]: 11063/20667 cut-off events. [2023-08-30 01:29:43,269 INFO L131 PetriNetUnfolder]: For 161336/161336 co-relation queries the response was YES. [2023-08-30 01:29:43,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126951 conditions, 20667 events. 11063/20667 cut-off events. For 161336/161336 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 167383 event pairs, 2004 based on Foata normal form. 240/20187 useless extension candidates. Maximal degree in co-relation 126854. Up to 8128 conditions per place. [2023-08-30 01:29:43,774 INFO L137 encePairwiseOnDemand]: 527/533 looper letters, 182 selfloop transitions, 138 changer transitions 0/320 dead transitions. [2023-08-30 01:29:43,774 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 320 transitions, 4443 flow [2023-08-30 01:29:43,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-30 01:29:43,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-30 01:29:43,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3678 transitions. [2023-08-30 01:29:43,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4059154618695508 [2023-08-30 01:29:43,787 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3678 transitions. [2023-08-30 01:29:43,787 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3678 transitions. [2023-08-30 01:29:43,787 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:29:43,788 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3678 transitions. [2023-08-30 01:29:43,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 216.35294117647058) internal successors, (3678), 17 states have internal predecessors, (3678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:29:43,807 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 533.0) internal successors, (9594), 18 states have internal predecessors, (9594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:29:43,808 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 533.0) internal successors, (9594), 18 states have internal predecessors, (9594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:29:43,808 INFO L175 Difference]: Start difference. First operand has 247 places, 236 transitions, 3177 flow. Second operand 17 states and 3678 transitions. [2023-08-30 01:29:43,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 320 transitions, 4443 flow [2023-08-30 01:29:46,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 320 transitions, 4211 flow, removed 15 selfloop flow, removed 9 redundant places. [2023-08-30 01:29:46,664 INFO L231 Difference]: Finished difference. Result has 258 places, 262 transitions, 3701 flow [2023-08-30 01:29:46,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=533, PETRI_DIFFERENCE_MINUEND_FLOW=2981, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3701, PETRI_PLACES=258, PETRI_TRANSITIONS=262} [2023-08-30 01:29:46,666 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 210 predicate places. [2023-08-30 01:29:46,666 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 262 transitions, 3701 flow [2023-08-30 01:29:46,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 210.91666666666666) internal successors, (2531), 12 states have internal predecessors, (2531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:29:46,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:29:46,666 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:29:46,677 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2023-08-30 01:29:46,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 01:29:46,875 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2023-08-30 01:29:46,875 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:29:46,875 INFO L85 PathProgramCache]: Analyzing trace with hash 760639718, now seen corresponding path program 5 times [2023-08-30 01:29:46,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 01:29:46,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [761170498] [2023-08-30 01:29:46,876 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 01:29:46,876 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 01:29:46,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 01:29:46,877 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 01:29:46,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2023-08-30 01:29:47,085 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 01:29:47,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 01:29:47,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-30 01:29:47,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 01:33:12,273 WARN L230 Executor]: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2023-08-30 01:33:12,273 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2023-08-30 01:33:12,274 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 01:33:12,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [761170498] [2023-08-30 01:33:12,274 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2023-08-30 01:33:12,286 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2023-08-30 01:33:12,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 01:33:12,475 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:139) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:85) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:935) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:774) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:362) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:311) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:582) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:199) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:299) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:210) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1465) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:658) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:239) ... 44 more [2023-08-30 01:33:12,478 INFO L158 Benchmark]: Toolchain (without parser) took 433074.81ms. Allocated memory was 69.2MB in the beginning and 5.1GB in the end (delta: 5.1GB). Free memory was 47.4MB in the beginning and 2.4GB in the end (delta: -2.3GB). Peak memory consumption was 2.8GB. Max. memory is 16.1GB. [2023-08-30 01:33:12,478 INFO L158 Benchmark]: CDTParser took 0.73ms. Allocated memory is still 69.2MB. Free memory is still 47.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 01:33:12,478 INFO L158 Benchmark]: CACSL2BoogieTranslator took 316.79ms. Allocated memory is still 69.2MB. Free memory was 47.3MB in the beginning and 32.8MB in the end (delta: 14.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-08-30 01:33:12,478 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.86ms. Allocated memory was 69.2MB in the beginning and 83.9MB in the end (delta: 14.7MB). Free memory was 32.8MB in the beginning and 63.1MB in the end (delta: -30.3MB). Peak memory consumption was 7.2MB. Max. memory is 16.1GB. [2023-08-30 01:33:12,479 INFO L158 Benchmark]: Boogie Preprocessor took 46.05ms. Allocated memory is still 83.9MB. Free memory was 63.1MB in the beginning and 61.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 01:33:12,479 INFO L158 Benchmark]: RCFGBuilder took 570.58ms. Allocated memory is still 83.9MB. Free memory was 61.3MB in the beginning and 61.5MB in the end (delta: -190.5kB). Peak memory consumption was 31.7MB. Max. memory is 16.1GB. [2023-08-30 01:33:12,479 INFO L158 Benchmark]: TraceAbstraction took 432085.95ms. Allocated memory was 83.9MB in the beginning and 5.1GB in the end (delta: 5.1GB). Free memory was 61.0MB in the beginning and 2.4GB in the end (delta: -2.3GB). Peak memory consumption was 2.8GB. Max. memory is 16.1GB. [2023-08-30 01:33:12,479 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.73ms. Allocated memory is still 69.2MB. Free memory is still 47.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 316.79ms. Allocated memory is still 69.2MB. Free memory was 47.3MB in the beginning and 32.8MB in the end (delta: 14.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.86ms. Allocated memory was 69.2MB in the beginning and 83.9MB in the end (delta: 14.7MB). Free memory was 32.8MB in the beginning and 63.1MB in the end (delta: -30.3MB). Peak memory consumption was 7.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.05ms. Allocated memory is still 83.9MB. Free memory was 63.1MB in the beginning and 61.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 570.58ms. Allocated memory is still 83.9MB. Free memory was 61.3MB in the beginning and 61.5MB in the end (delta: -190.5kB). Peak memory consumption was 31.7MB. Max. memory is 16.1GB. * TraceAbstraction took 432085.95ms. Allocated memory was 83.9MB in the beginning and 5.1GB in the end (delta: 5.1GB). Free memory was 61.0MB in the beginning and 2.4GB in the end (delta: -2.3GB). Peak memory consumption was 2.8GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 34.4s, 230 PlacesBefore, 48 PlacesAfterwards, 244 TransitionsBefore, 44 TransitionsAfterwards, 7800 CoEnabledTransitionPairs, 8 FixpointIterations, 75 TrivialSequentialCompositions, 159 ConcurrentSequentialCompositions, 17 TrivialYvCompositions, 14 ConcurrentYvCompositions, 18 ChoiceCompositions, 283 TotalNumberOfCompositions, 7465 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 7385, independent: 7377, independent conditional: 0, independent unconditional: 7377, dependent: 8, dependent conditional: 0, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 4158, independent: 4154, independent conditional: 0, independent unconditional: 4154, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 7385, independent: 3223, independent conditional: 0, independent unconditional: 3223, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 4158, unknown conditional: 0, unknown unconditional: 4158] , Statistics on independence cache: Total cache size (in pairs): 79, Positive cache size: 78, Positive conditional cache size: 0, Positive unconditional cache size: 78, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory")