./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/weaver/chl-name-comparator-trans.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/weaver/chl-name-comparator-trans.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 7a18ee378e36a8b6ec16846ba26aa7ebab799f55311c04bb5b266d3aa0d0986d --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 05:04:40,505 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 05:04:40,507 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 05:04:40,558 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 05:04:40,559 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 05:04:40,561 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 05:04:40,563 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 05:04:40,566 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 05:04:40,568 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 05:04:40,572 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 05:04:40,573 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 05:04:40,575 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 05:04:40,576 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 05:04:40,578 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 05:04:40,579 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 05:04:40,585 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 05:04:40,586 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 05:04:40,588 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 05:04:40,589 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 05:04:40,594 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 05:04:40,602 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 05:04:40,604 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 05:04:40,604 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 05:04:40,605 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 05:04:40,613 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 05:04:40,614 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 05:04:40,614 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 05:04:40,616 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 05:04:40,616 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 05:04:40,618 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 05:04:40,618 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 05:04:40,619 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 05:04:40,620 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 05:04:40,622 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 05:04:40,623 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 05:04:40,624 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 05:04:40,624 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 05:04:40,624 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 05:04:40,625 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 05:04:40,625 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 05:04:40,626 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 05:04:40,627 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-30 05:04:40,660 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 05:04:40,660 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 05:04:40,661 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 05:04:40,661 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 05:04:40,662 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 05:04:40,662 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 05:04:40,663 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 05:04:40,663 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 05:04:40,663 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 05:04:40,664 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 05:04:40,664 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 05:04:40,665 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 05:04:40,665 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 05:04:40,665 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 05:04:40,665 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 05:04:40,665 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 05:04:40,665 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 05:04:40,666 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 05:04:40,666 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 05:04:40,666 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 05:04:40,666 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 05:04:40,666 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 05:04:40,667 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 05:04:40,667 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 05:04:40,667 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 05:04:40,667 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 05:04:40,667 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 05:04:40,668 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 05:04:40,668 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 05:04:40,668 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 05:04:40,668 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 05:04:40,668 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 05:04:40,669 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 05:04:40,669 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 05:04:40,669 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7a18ee378e36a8b6ec16846ba26aa7ebab799f55311c04bb5b266d3aa0d0986d Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 05:04:40,958 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 05:04:40,982 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 05:04:40,984 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 05:04:40,985 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 05:04:40,986 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 05:04:40,988 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-name-comparator-trans.wvr.c [2023-08-30 05:04:42,300 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 05:04:42,509 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 05:04:42,509 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-name-comparator-trans.wvr.c [2023-08-30 05:04:42,533 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d8946a7a/ac1efca8f82140798acf400e8ecd4d5b/FLAG5b34132f2 [2023-08-30 05:04:42,552 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d8946a7a/ac1efca8f82140798acf400e8ecd4d5b [2023-08-30 05:04:42,554 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 05:04:42,556 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 05:04:42,558 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 05:04:42,558 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 05:04:42,561 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 05:04:42,562 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:04:42" (1/1) ... [2023-08-30 05:04:42,563 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c1b1575 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:04:42, skipping insertion in model container [2023-08-30 05:04:42,563 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:04:42" (1/1) ... [2023-08-30 05:04:42,570 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 05:04:42,603 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 05:04:42,804 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-name-comparator-trans.wvr.c[4788,4801] [2023-08-30 05:04:42,817 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 05:04:42,827 ERROR L324 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-08-30 05:04:42,830 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@49994f30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:04:42, skipping insertion in model container [2023-08-30 05:04:42,830 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 05:04:42,831 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-08-30 05:04:42,832 INFO L158 Benchmark]: Toolchain (without parser) took 275.81ms. Allocated memory is still 79.7MB. Free memory was 59.0MB in the beginning and 48.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-08-30 05:04:42,833 INFO L158 Benchmark]: CDTParser took 0.95ms. Allocated memory is still 60.8MB. Free memory is still 38.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 05:04:42,833 INFO L158 Benchmark]: CACSL2BoogieTranslator took 272.51ms. Allocated memory is still 79.7MB. Free memory was 58.7MB in the beginning and 48.5MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-08-30 05:04:42,835 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.95ms. Allocated memory is still 60.8MB. Free memory is still 38.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 272.51ms. Allocated memory is still 79.7MB. Free memory was 58.7MB in the beginning and 48.5MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 151]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/weaver/chl-name-comparator-trans.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 7a18ee378e36a8b6ec16846ba26aa7ebab799f55311c04bb5b266d3aa0d0986d --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 05:04:44,497 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 05:04:44,500 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 05:04:44,544 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 05:04:44,544 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 05:04:44,545 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 05:04:44,546 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 05:04:44,550 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 05:04:44,552 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 05:04:44,561 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 05:04:44,562 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 05:04:44,563 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 05:04:44,564 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 05:04:44,565 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 05:04:44,566 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 05:04:44,568 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 05:04:44,572 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 05:04:44,572 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 05:04:44,574 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 05:04:44,576 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 05:04:44,580 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 05:04:44,583 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 05:04:44,584 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 05:04:44,585 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 05:04:44,588 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 05:04:44,591 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 05:04:44,591 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 05:04:44,592 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 05:04:44,593 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 05:04:44,594 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 05:04:44,594 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 05:04:44,595 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 05:04:44,596 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 05:04:44,597 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 05:04:44,598 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 05:04:44,598 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 05:04:44,599 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 05:04:44,599 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 05:04:44,600 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 05:04:44,600 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 05:04:44,601 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 05:04:44,602 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-08-30 05:04:44,633 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 05:04:44,633 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 05:04:44,634 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 05:04:44,635 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 05:04:44,635 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 05:04:44,635 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 05:04:44,636 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 05:04:44,636 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 05:04:44,636 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 05:04:44,637 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 05:04:44,637 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 05:04:44,637 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 05:04:44,638 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 05:04:44,638 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 05:04:44,638 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 05:04:44,638 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 05:04:44,638 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 05:04:44,639 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 05:04:44,639 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 05:04:44,639 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 05:04:44,639 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-08-30 05:04:44,639 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-08-30 05:04:44,639 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 05:04:44,640 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 05:04:44,640 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 05:04:44,640 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 05:04:44,640 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 05:04:44,640 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 05:04:44,641 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 05:04:44,641 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 05:04:44,641 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-08-30 05:04:44,641 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-08-30 05:04:44,641 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 05:04:44,642 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 05:04:44,642 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 05:04:44,642 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-08-30 05:04:44,642 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 05:04:44,642 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7a18ee378e36a8b6ec16846ba26aa7ebab799f55311c04bb5b266d3aa0d0986d Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 05:04:44,936 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 05:04:44,963 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 05:04:44,965 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 05:04:44,966 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 05:04:44,967 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 05:04:44,968 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-name-comparator-trans.wvr.c [2023-08-30 05:04:46,170 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 05:04:46,373 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 05:04:46,374 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-name-comparator-trans.wvr.c [2023-08-30 05:04:46,382 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74814e96f/af4121ad6da34ba19f0d31321f87794e/FLAG8cf1a17c3 [2023-08-30 05:04:46,393 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74814e96f/af4121ad6da34ba19f0d31321f87794e [2023-08-30 05:04:46,395 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 05:04:46,396 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 05:04:46,397 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 05:04:46,397 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 05:04:46,399 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 05:04:46,400 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:04:46" (1/1) ... [2023-08-30 05:04:46,401 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d28b40c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:04:46, skipping insertion in model container [2023-08-30 05:04:46,402 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:04:46" (1/1) ... [2023-08-30 05:04:46,407 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 05:04:46,428 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 05:04:46,570 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-name-comparator-trans.wvr.c[4788,4801] [2023-08-30 05:04:46,580 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 05:04:46,591 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-08-30 05:04:46,595 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 05:04:46,619 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-name-comparator-trans.wvr.c[4788,4801] [2023-08-30 05:04:46,623 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 05:04:46,633 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 05:04:46,668 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-name-comparator-trans.wvr.c[4788,4801] [2023-08-30 05:04:46,686 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 05:04:46,704 INFO L208 MainTranslator]: Completed translation [2023-08-30 05:04:46,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:04:46 WrapperNode [2023-08-30 05:04:46,705 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 05:04:46,706 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 05:04:46,707 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 05:04:46,707 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 05:04:46,712 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:04:46" (1/1) ... [2023-08-30 05:04:46,734 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:04:46" (1/1) ... [2023-08-30 05:04:46,776 INFO L138 Inliner]: procedures = 28, calls = 44, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 297 [2023-08-30 05:04:46,780 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 05:04:46,781 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 05:04:46,781 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 05:04:46,781 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 05:04:46,789 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:04:46" (1/1) ... [2023-08-30 05:04:46,790 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:04:46" (1/1) ... [2023-08-30 05:04:46,805 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:04:46" (1/1) ... [2023-08-30 05:04:46,806 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:04:46" (1/1) ... [2023-08-30 05:04:46,821 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:04:46" (1/1) ... [2023-08-30 05:04:46,826 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:04:46" (1/1) ... [2023-08-30 05:04:46,838 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:04:46" (1/1) ... [2023-08-30 05:04:46,840 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:04:46" (1/1) ... [2023-08-30 05:04:46,843 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 05:04:46,848 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 05:04:46,848 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 05:04:46,848 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 05:04:46,849 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:04:46" (1/1) ... [2023-08-30 05:04:46,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 05:04:46,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:04:46,878 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 05:04:46,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 05:04:46,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 05:04:46,937 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-08-30 05:04:46,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 05:04:46,937 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-08-30 05:04:46,938 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 05:04:46,938 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 05:04:46,938 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 05:04:46,938 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 05:04:46,939 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 05:04:46,939 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 05:04:46,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 05:04:46,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 05:04:46,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 05:04:46,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 05:04:46,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-08-30 05:04:46,941 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 05:04:47,101 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 05:04:47,108 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 05:04:47,639 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 05:04:47,648 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 05:04:47,649 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-30 05:04:47,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:04:47 BoogieIcfgContainer [2023-08-30 05:04:47,651 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 05:04:47,653 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 05:04:47,653 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 05:04:47,656 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 05:04:47,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 05:04:46" (1/3) ... [2023-08-30 05:04:47,657 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20049d98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:04:47, skipping insertion in model container [2023-08-30 05:04:47,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:04:46" (2/3) ... [2023-08-30 05:04:47,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20049d98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:04:47, skipping insertion in model container [2023-08-30 05:04:47,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:04:47" (3/3) ... [2023-08-30 05:04:47,659 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-trans.wvr.c [2023-08-30 05:04:47,675 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 05:04:47,675 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2023-08-30 05:04:47,676 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 05:04:47,783 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 05:04:47,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 349 places, 365 transitions, 754 flow [2023-08-30 05:04:47,988 INFO L130 PetriNetUnfolder]: 26/362 cut-off events. [2023-08-30 05:04:47,988 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 05:04:48,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 375 conditions, 362 events. 26/362 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 927 event pairs, 0 based on Foata normal form. 0/314 useless extension candidates. Maximal degree in co-relation 263. Up to 2 conditions per place. [2023-08-30 05:04:48,003 INFO L82 GeneralOperation]: Start removeDead. Operand has 349 places, 365 transitions, 754 flow [2023-08-30 05:04:48,016 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 342 places, 358 transitions, 734 flow [2023-08-30 05:04:48,020 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 05:04:48,041 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 342 places, 358 transitions, 734 flow [2023-08-30 05:04:48,045 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 342 places, 358 transitions, 734 flow [2023-08-30 05:04:48,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 342 places, 358 transitions, 734 flow [2023-08-30 05:04:48,129 INFO L130 PetriNetUnfolder]: 26/358 cut-off events. [2023-08-30 05:04:48,129 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 05:04:48,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 371 conditions, 358 events. 26/358 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 926 event pairs, 0 based on Foata normal form. 0/311 useless extension candidates. Maximal degree in co-relation 263. Up to 2 conditions per place. [2023-08-30 05:04:48,148 INFO L119 LiptonReduction]: Number of co-enabled transitions 31488 [2023-08-30 05:05:08,220 INFO L134 LiptonReduction]: Checked pairs total: 27812 [2023-08-30 05:05:08,220 INFO L136 LiptonReduction]: Total number of compositions: 416 [2023-08-30 05:05:08,232 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 05:05:08,237 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;@7bbfbbc7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 05:05:08,237 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2023-08-30 05:05:08,239 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 05:05:08,239 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 05:05:08,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:05:08,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 05:05:08,240 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:05:08,244 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:05:08,244 INFO L85 PathProgramCache]: Analyzing trace with hash 47277, now seen corresponding path program 1 times [2023-08-30 05:05:08,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:05:08,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1569899693] [2023-08-30 05:05:08,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:05:08,255 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:05:08,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:05:08,261 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:05:08,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-08-30 05:05:08,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:05:08,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 05:05:08,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:05:08,594 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2023-08-30 05:05:08,595 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 42 [2023-08-30 05:05:08,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:05:08,638 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 05:05:08,639 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:05:08,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1569899693] [2023-08-30 05:05:08,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1569899693] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:05:08,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:05:08,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 05:05:08,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061438393] [2023-08-30 05:05:08,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:05:08,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 05:05:08,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:05:08,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 05:05:08,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 05:05:08,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 331 out of 781 [2023-08-30 05:05:08,843 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 45 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 331.6666666666667) internal successors, (995), 3 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:08,843 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:05:08,843 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 331 of 781 [2023-08-30 05:05:08,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:05:09,792 INFO L130 PetriNetUnfolder]: 3633/5128 cut-off events. [2023-08-30 05:05:09,792 INFO L131 PetriNetUnfolder]: For 190/190 co-relation queries the response was YES. [2023-08-30 05:05:09,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10447 conditions, 5128 events. 3633/5128 cut-off events. For 190/190 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 23417 event pairs, 2856 based on Foata normal form. 0/2051 useless extension candidates. Maximal degree in co-relation 4490. Up to 2566 conditions per place. [2023-08-30 05:05:09,819 INFO L137 encePairwiseOnDemand]: 777/781 looper letters, 84 selfloop transitions, 2 changer transitions 0/86 dead transitions. [2023-08-30 05:05:09,820 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 86 transitions, 380 flow [2023-08-30 05:05:09,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:05:09,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:05:09,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1082 transitions. [2023-08-30 05:05:09,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46180110968843363 [2023-08-30 05:05:09,842 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1082 transitions. [2023-08-30 05:05:09,843 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1082 transitions. [2023-08-30 05:05:09,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:05:09,848 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1082 transitions. [2023-08-30 05:05:09,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 360.6666666666667) internal successors, (1082), 3 states have internal predecessors, (1082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:09,863 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 781.0) internal successors, (3124), 4 states have internal predecessors, (3124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:09,866 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 781.0) internal successors, (3124), 4 states have internal predecessors, (3124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:09,868 INFO L175 Difference]: Start difference. First operand has 51 places, 45 transitions, 108 flow. Second operand 3 states and 1082 transitions. [2023-08-30 05:05:09,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 86 transitions, 380 flow [2023-08-30 05:05:09,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 86 transitions, 356 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-30 05:05:09,878 INFO L231 Difference]: Finished difference. Result has 47 places, 45 transitions, 106 flow [2023-08-30 05:05:09,879 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=47, PETRI_TRANSITIONS=45} [2023-08-30 05:05:09,883 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -4 predicate places. [2023-08-30 05:05:09,884 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 45 transitions, 106 flow [2023-08-30 05:05:09,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 331.6666666666667) internal successors, (995), 3 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:09,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:05:09,889 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 05:05:09,904 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-08-30 05:05:10,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:05:10,099 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:05:10,099 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:05:10,099 INFO L85 PathProgramCache]: Analyzing trace with hash 47276, now seen corresponding path program 1 times [2023-08-30 05:05:10,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:05:10,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2051899324] [2023-08-30 05:05:10,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:05:10,100 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:05:10,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:05:10,105 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:05:10,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-08-30 05:05:10,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:05:10,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 05:05:10,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:05:10,244 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2023-08-30 05:05:10,244 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 50 [2023-08-30 05:05:10,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:05:10,271 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 05:05:10,271 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:05:10,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2051899324] [2023-08-30 05:05:10,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2051899324] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:05:10,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:05:10,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 05:05:10,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41708823] [2023-08-30 05:05:10,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:05:10,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 05:05:10,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:05:10,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 05:05:10,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 05:05:10,372 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 332 out of 781 [2023-08-30 05:05:10,374 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 45 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 332.6666666666667) internal successors, (998), 3 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:10,374 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:05:10,374 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 332 of 781 [2023-08-30 05:05:10,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:05:11,081 INFO L130 PetriNetUnfolder]: 3633/5126 cut-off events. [2023-08-30 05:05:11,081 INFO L131 PetriNetUnfolder]: For 40/40 co-relation queries the response was YES. [2023-08-30 05:05:11,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10323 conditions, 5126 events. 3633/5126 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 23463 event pairs, 2856 based on Foata normal form. 0/2053 useless extension candidates. Maximal degree in co-relation 5159. Up to 5126 conditions per place. [2023-08-30 05:05:11,108 INFO L137 encePairwiseOnDemand]: 779/781 looper letters, 43 selfloop transitions, 1 changer transitions 0/44 dead transitions. [2023-08-30 05:05:11,109 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 44 transitions, 192 flow [2023-08-30 05:05:11,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:05:11,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:05:11,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1040 transitions. [2023-08-30 05:05:11,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44387537345283823 [2023-08-30 05:05:11,112 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1040 transitions. [2023-08-30 05:05:11,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1040 transitions. [2023-08-30 05:05:11,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:05:11,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1040 transitions. [2023-08-30 05:05:11,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 346.6666666666667) internal successors, (1040), 3 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:11,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 781.0) internal successors, (3124), 4 states have internal predecessors, (3124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:11,120 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 781.0) internal successors, (3124), 4 states have internal predecessors, (3124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:11,120 INFO L175 Difference]: Start difference. First operand has 47 places, 45 transitions, 106 flow. Second operand 3 states and 1040 transitions. [2023-08-30 05:05:11,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 44 transitions, 192 flow [2023-08-30 05:05:11,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 44 transitions, 190 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:05:11,122 INFO L231 Difference]: Finished difference. Result has 47 places, 44 transitions, 104 flow [2023-08-30 05:05:11,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=47, PETRI_TRANSITIONS=44} [2023-08-30 05:05:11,123 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -4 predicate places. [2023-08-30 05:05:11,123 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 44 transitions, 104 flow [2023-08-30 05:05:11,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 332.6666666666667) internal successors, (998), 3 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:11,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:05:11,124 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 05:05:11,137 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-08-30 05:05:11,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:05:11,334 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:05:11,334 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:05:11,334 INFO L85 PathProgramCache]: Analyzing trace with hash 47387, now seen corresponding path program 1 times [2023-08-30 05:05:11,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:05:11,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [720793288] [2023-08-30 05:05:11,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:05:11,335 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:05:11,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:05:11,337 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:05:11,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-08-30 05:05:11,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:05:11,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 05:05:11,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:05:11,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:05:11,418 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 05:05:11,418 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:05:11,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [720793288] [2023-08-30 05:05:11,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [720793288] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:05:11,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:05:11,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 05:05:11,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341348245] [2023-08-30 05:05:11,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:05:11,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 05:05:11,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:05:11,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 05:05:11,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 05:05:11,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 335 out of 781 [2023-08-30 05:05:11,452 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 44 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 335.6666666666667) internal successors, (1007), 3 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:11,452 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:05:11,453 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 335 of 781 [2023-08-30 05:05:11,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:05:11,895 INFO L130 PetriNetUnfolder]: 1817/2565 cut-off events. [2023-08-30 05:05:11,895 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2023-08-30 05:05:11,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5170 conditions, 2565 events. 1817/2565 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 10289 event pairs, 1428 based on Foata normal form. 1/1029 useless extension candidates. Maximal degree in co-relation 5162. Up to 2565 conditions per place. [2023-08-30 05:05:11,908 INFO L137 encePairwiseOnDemand]: 776/781 looper letters, 42 selfloop transitions, 2 changer transitions 0/44 dead transitions. [2023-08-30 05:05:11,909 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 44 transitions, 192 flow [2023-08-30 05:05:11,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:05:11,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:05:11,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1052 transitions. [2023-08-30 05:05:11,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44899701237729406 [2023-08-30 05:05:11,913 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1052 transitions. [2023-08-30 05:05:11,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1052 transitions. [2023-08-30 05:05:11,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:05:11,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1052 transitions. [2023-08-30 05:05:11,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 350.6666666666667) internal successors, (1052), 3 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:11,920 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 781.0) internal successors, (3124), 4 states have internal predecessors, (3124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:11,921 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 781.0) internal successors, (3124), 4 states have internal predecessors, (3124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:11,922 INFO L175 Difference]: Start difference. First operand has 47 places, 44 transitions, 104 flow. Second operand 3 states and 1052 transitions. [2023-08-30 05:05:11,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 44 transitions, 192 flow [2023-08-30 05:05:11,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 44 transitions, 189 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 05:05:11,924 INFO L231 Difference]: Finished difference. Result has 49 places, 44 transitions, 113 flow [2023-08-30 05:05:11,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=113, PETRI_PLACES=49, PETRI_TRANSITIONS=44} [2023-08-30 05:05:11,924 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -2 predicate places. [2023-08-30 05:05:11,925 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 44 transitions, 113 flow [2023-08-30 05:05:11,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 335.6666666666667) internal successors, (1007), 3 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:11,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:05:11,926 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 05:05:11,939 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-08-30 05:05:12,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:05:12,135 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:05:12,135 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:05:12,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1470721, now seen corresponding path program 1 times [2023-08-30 05:05:12,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:05:12,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1123778447] [2023-08-30 05:05:12,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:05:12,136 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:05:12,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:05:12,137 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:05:12,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-08-30 05:05:12,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:05:12,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 05:05:12,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:05:12,238 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:05:12,239 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:05:12,270 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:05:12,271 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:05:12,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1123778447] [2023-08-30 05:05:12,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1123778447] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:05:12,271 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 05:05:12,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-08-30 05:05:12,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041376669] [2023-08-30 05:05:12,272 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 05:05:12,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 05:05:12,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:05:12,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 05:05:12,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-30 05:05:12,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 333 out of 781 [2023-08-30 05:05:12,383 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 44 transitions, 113 flow. Second operand has 6 states, 6 states have (on average 334.0) internal successors, (2004), 6 states have internal predecessors, (2004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:12,383 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:05:12,384 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 333 of 781 [2023-08-30 05:05:12,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:05:12,995 INFO L130 PetriNetUnfolder]: 1818/2569 cut-off events. [2023-08-30 05:05:12,995 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2023-08-30 05:05:12,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5188 conditions, 2569 events. 1818/2569 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 10292 event pairs, 1428 based on Foata normal form. 2/1032 useless extension candidates. Maximal degree in co-relation 5178. Up to 2564 conditions per place. [2023-08-30 05:05:13,008 INFO L137 encePairwiseOnDemand]: 775/781 looper letters, 43 selfloop transitions, 5 changer transitions 0/48 dead transitions. [2023-08-30 05:05:13,008 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 48 transitions, 225 flow [2023-08-30 05:05:13,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 05:05:13,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 05:05:13,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1719 transitions. [2023-08-30 05:05:13,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44020486555697824 [2023-08-30 05:05:13,013 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1719 transitions. [2023-08-30 05:05:13,013 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1719 transitions. [2023-08-30 05:05:13,014 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:05:13,014 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1719 transitions. [2023-08-30 05:05:13,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 343.8) internal successors, (1719), 5 states have internal predecessors, (1719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:13,024 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 781.0) internal successors, (4686), 6 states have internal predecessors, (4686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:13,026 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 781.0) internal successors, (4686), 6 states have internal predecessors, (4686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:13,026 INFO L175 Difference]: Start difference. First operand has 49 places, 44 transitions, 113 flow. Second operand 5 states and 1719 transitions. [2023-08-30 05:05:13,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 48 transitions, 225 flow [2023-08-30 05:05:13,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 48 transitions, 221 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 05:05:13,028 INFO L231 Difference]: Finished difference. Result has 54 places, 47 transitions, 155 flow [2023-08-30 05:05:13,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=155, PETRI_PLACES=54, PETRI_TRANSITIONS=47} [2023-08-30 05:05:13,029 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 3 predicate places. [2023-08-30 05:05:13,029 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 47 transitions, 155 flow [2023-08-30 05:05:13,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 334.0) internal successors, (2004), 6 states have internal predecessors, (2004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:13,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:05:13,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 05:05:13,041 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-08-30 05:05:13,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:05:13,240 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:05:13,241 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:05:13,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1470611, now seen corresponding path program 1 times [2023-08-30 05:05:13,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:05:13,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1175333647] [2023-08-30 05:05:13,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:05:13,241 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:05:13,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:05:13,242 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:05:13,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-08-30 05:05:13,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:05:13,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 05:05:13,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:05:13,407 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2023-08-30 05:05:13,408 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 42 [2023-08-30 05:05:13,440 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:05:13,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:05:13,520 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:05:13,521 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:05:13,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1175333647] [2023-08-30 05:05:13,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1175333647] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:05:13,521 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 05:05:13,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-08-30 05:05:13,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687950732] [2023-08-30 05:05:13,522 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 05:05:13,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 05:05:13,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:05:13,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 05:05:13,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-30 05:05:14,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 329 out of 781 [2023-08-30 05:05:14,319 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 47 transitions, 155 flow. Second operand has 6 states, 6 states have (on average 330.0) internal successors, (1980), 6 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:14,319 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:05:14,319 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 329 of 781 [2023-08-30 05:05:14,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:05:14,967 INFO L130 PetriNetUnfolder]: 1817/2567 cut-off events. [2023-08-30 05:05:14,967 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-08-30 05:05:14,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5198 conditions, 2567 events. 1817/2567 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 10276 event pairs, 1428 based on Foata normal form. 2/1033 useless extension candidates. Maximal degree in co-relation 5185. Up to 2565 conditions per place. [2023-08-30 05:05:14,978 INFO L137 encePairwiseOnDemand]: 778/781 looper letters, 42 selfloop transitions, 4 changer transitions 0/46 dead transitions. [2023-08-30 05:05:14,978 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 46 transitions, 241 flow [2023-08-30 05:05:14,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 05:05:14,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 05:05:14,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1693 transitions. [2023-08-30 05:05:14,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43354673495518564 [2023-08-30 05:05:14,983 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1693 transitions. [2023-08-30 05:05:14,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1693 transitions. [2023-08-30 05:05:14,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:05:14,984 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1693 transitions. [2023-08-30 05:05:14,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 338.6) internal successors, (1693), 5 states have internal predecessors, (1693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:14,993 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 781.0) internal successors, (4686), 6 states have internal predecessors, (4686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:14,995 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 781.0) internal successors, (4686), 6 states have internal predecessors, (4686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:14,995 INFO L175 Difference]: Start difference. First operand has 54 places, 47 transitions, 155 flow. Second operand 5 states and 1693 transitions. [2023-08-30 05:05:14,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 46 transitions, 241 flow [2023-08-30 05:05:14,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 46 transitions, 224 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-08-30 05:05:14,997 INFO L231 Difference]: Finished difference. Result has 55 places, 46 transitions, 140 flow [2023-08-30 05:05:14,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=140, PETRI_PLACES=55, PETRI_TRANSITIONS=46} [2023-08-30 05:05:14,998 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 4 predicate places. [2023-08-30 05:05:14,998 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 46 transitions, 140 flow [2023-08-30 05:05:14,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 330.0) internal successors, (1980), 6 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:14,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:05:14,999 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1] [2023-08-30 05:05:15,011 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-08-30 05:05:15,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:05:15,208 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:05:15,209 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:05:15,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1413418049, now seen corresponding path program 2 times [2023-08-30 05:05:15,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:05:15,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1174942941] [2023-08-30 05:05:15,210 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 05:05:15,210 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 05:05:15,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:05:15,211 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:05:15,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-08-30 05:05:15,276 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 05:05:15,276 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:05:15,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 05:05:15,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:05:15,352 INFO L321 Elim1Store]: treesize reduction 111, result has 19.0 percent of original size [2023-08-30 05:05:15,352 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 51 [2023-08-30 05:05:15,437 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:05:15,438 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 05:05:15,439 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:05:15,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1174942941] [2023-08-30 05:05:15,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1174942941] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:05:15,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:05:15,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 05:05:15,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144895078] [2023-08-30 05:05:15,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:05:15,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 05:05:15,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:05:15,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 05:05:15,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 05:05:15,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 332 out of 781 [2023-08-30 05:05:15,563 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 46 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 333.0) internal successors, (999), 3 states have internal predecessors, (999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:15,563 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:05:15,563 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 332 of 781 [2023-08-30 05:05:15,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:05:15,941 INFO L130 PetriNetUnfolder]: 1442/2066 cut-off events. [2023-08-30 05:05:15,941 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-30 05:05:15,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4188 conditions, 2066 events. 1442/2066 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 8082 event pairs, 1128 based on Foata normal form. 0/881 useless extension candidates. Maximal degree in co-relation 4176. Up to 2066 conditions per place. [2023-08-30 05:05:15,950 INFO L137 encePairwiseOnDemand]: 778/781 looper letters, 43 selfloop transitions, 1 changer transitions 0/44 dead transitions. [2023-08-30 05:05:15,950 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 44 transitions, 218 flow [2023-08-30 05:05:15,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:05:15,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:05:15,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1039 transitions. [2023-08-30 05:05:15,954 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4434485702091336 [2023-08-30 05:05:15,954 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1039 transitions. [2023-08-30 05:05:15,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1039 transitions. [2023-08-30 05:05:15,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:05:15,955 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1039 transitions. [2023-08-30 05:05:15,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 346.3333333333333) internal successors, (1039), 3 states have internal predecessors, (1039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:15,960 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 781.0) internal successors, (3124), 4 states have internal predecessors, (3124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:15,961 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 781.0) internal successors, (3124), 4 states have internal predecessors, (3124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:15,961 INFO L175 Difference]: Start difference. First operand has 55 places, 46 transitions, 140 flow. Second operand 3 states and 1039 transitions. [2023-08-30 05:05:15,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 44 transitions, 218 flow [2023-08-30 05:05:15,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 44 transitions, 207 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-08-30 05:05:15,963 INFO L231 Difference]: Finished difference. Result has 51 places, 44 transitions, 121 flow [2023-08-30 05:05:15,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=121, PETRI_PLACES=51, PETRI_TRANSITIONS=44} [2023-08-30 05:05:15,964 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 0 predicate places. [2023-08-30 05:05:15,964 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 121 flow [2023-08-30 05:05:15,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 333.0) internal successors, (999), 3 states have internal predecessors, (999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:15,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:05:15,965 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1] [2023-08-30 05:05:15,973 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-08-30 05:05:16,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:05:16,169 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:05:16,169 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:05:16,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1413418051, now seen corresponding path program 1 times [2023-08-30 05:05:16,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:05:16,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [392168951] [2023-08-30 05:05:16,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:05:16,170 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:05:16,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:05:16,171 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:05:16,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-08-30 05:05:16,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:05:16,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-30 05:05:16,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:05:16,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 05:05:16,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 05:05:16,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 05:05:16,339 INFO L321 Elim1Store]: treesize reduction 30, result has 48.3 percent of original size [2023-08-30 05:05:16,339 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 33 [2023-08-30 05:05:16,357 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2023-08-30 05:05:16,357 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2023-08-30 05:05:16,468 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:05:16,468 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 05:05:16,469 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:05:16,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [392168951] [2023-08-30 05:05:16,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [392168951] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:05:16,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:05:16,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 05:05:16,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565107673] [2023-08-30 05:05:16,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:05:16,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 05:05:16,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:05:16,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 05:05:16,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 05:05:16,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 331 out of 781 [2023-08-30 05:05:16,608 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 121 flow. Second operand has 3 states, 3 states have (on average 332.0) internal successors, (996), 3 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:16,608 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:05:16,608 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 331 of 781 [2023-08-30 05:05:16,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:05:16,884 INFO L130 PetriNetUnfolder]: 1067/1565 cut-off events. [2023-08-30 05:05:16,885 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-08-30 05:05:16,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3178 conditions, 1565 events. 1067/1565 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 5921 event pairs, 828 based on Foata normal form. 0/731 useless extension candidates. Maximal degree in co-relation 3166. Up to 1565 conditions per place. [2023-08-30 05:05:16,890 INFO L137 encePairwiseOnDemand]: 778/781 looper letters, 41 selfloop transitions, 1 changer transitions 0/42 dead transitions. [2023-08-30 05:05:16,890 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 42 transitions, 195 flow [2023-08-30 05:05:16,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:05:16,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:05:16,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1034 transitions. [2023-08-30 05:05:16,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4413145539906103 [2023-08-30 05:05:16,894 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1034 transitions. [2023-08-30 05:05:16,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1034 transitions. [2023-08-30 05:05:16,895 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:05:16,895 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1034 transitions. [2023-08-30 05:05:16,897 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 344.6666666666667) internal successors, (1034), 3 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:16,900 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 781.0) internal successors, (3124), 4 states have internal predecessors, (3124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:16,901 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 781.0) internal successors, (3124), 4 states have internal predecessors, (3124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:16,901 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 121 flow. Second operand 3 states and 1034 transitions. [2023-08-30 05:05:16,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 42 transitions, 195 flow [2023-08-30 05:05:16,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 42 transitions, 194 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:05:16,903 INFO L231 Difference]: Finished difference. Result has 50 places, 42 transitions, 112 flow [2023-08-30 05:05:16,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=50, PETRI_TRANSITIONS=42} [2023-08-30 05:05:16,904 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -1 predicate places. [2023-08-30 05:05:16,904 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 42 transitions, 112 flow [2023-08-30 05:05:16,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 332.0) internal successors, (996), 3 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:16,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:05:16,905 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1] [2023-08-30 05:05:16,915 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-08-30 05:05:17,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:05:17,115 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:05:17,116 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:05:17,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1413417939, now seen corresponding path program 2 times [2023-08-30 05:05:17,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:05:17,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [510433029] [2023-08-30 05:05:17,116 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 05:05:17,116 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:05:17,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:05:17,117 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:05:17,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-08-30 05:05:17,184 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 05:05:17,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:05:17,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 05:05:17,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:05:17,228 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:05:17,228 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:05:17,331 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:05:17,331 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:05:17,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [510433029] [2023-08-30 05:05:17,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [510433029] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:05:17,332 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 05:05:17,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2023-08-30 05:05:17,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065636744] [2023-08-30 05:05:17,332 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 05:05:17,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 05:05:17,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:05:17,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 05:05:17,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-08-30 05:05:17,613 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 333 out of 781 [2023-08-30 05:05:17,615 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 42 transitions, 112 flow. Second operand has 10 states, 10 states have (on average 334.0) internal successors, (3340), 10 states have internal predecessors, (3340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:17,615 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:05:17,615 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 333 of 781 [2023-08-30 05:05:17,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:05:17,995 INFO L130 PetriNetUnfolder]: 1066/1563 cut-off events. [2023-08-30 05:05:17,995 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-08-30 05:05:17,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3174 conditions, 1563 events. 1066/1563 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 5900 event pairs, 828 based on Foata normal form. 2/731 useless extension candidates. Maximal degree in co-relation 3161. Up to 1560 conditions per place. [2023-08-30 05:05:18,002 INFO L137 encePairwiseOnDemand]: 778/781 looper letters, 36 selfloop transitions, 4 changer transitions 0/40 dead transitions. [2023-08-30 05:05:18,003 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 40 transitions, 184 flow [2023-08-30 05:05:18,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 05:05:18,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 05:05:18,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2040 transitions. [2023-08-30 05:05:18,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4353393085787452 [2023-08-30 05:05:18,009 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2040 transitions. [2023-08-30 05:05:18,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2040 transitions. [2023-08-30 05:05:18,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:05:18,010 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2040 transitions. [2023-08-30 05:05:18,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:18,020 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 781.0) internal successors, (5467), 7 states have internal predecessors, (5467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:18,021 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 781.0) internal successors, (5467), 7 states have internal predecessors, (5467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:18,021 INFO L175 Difference]: Start difference. First operand has 50 places, 42 transitions, 112 flow. Second operand 6 states and 2040 transitions. [2023-08-30 05:05:18,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 40 transitions, 184 flow [2023-08-30 05:05:18,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 40 transitions, 181 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 05:05:18,023 INFO L231 Difference]: Finished difference. Result has 52 places, 40 transitions, 109 flow [2023-08-30 05:05:18,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=109, PETRI_PLACES=52, PETRI_TRANSITIONS=40} [2023-08-30 05:05:18,023 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 1 predicate places. [2023-08-30 05:05:18,024 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 40 transitions, 109 flow [2023-08-30 05:05:18,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 334.0) internal successors, (3340), 10 states have internal predecessors, (3340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:18,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:05:18,025 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1] [2023-08-30 05:05:18,043 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-08-30 05:05:18,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:05:18,235 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:05:18,235 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:05:18,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1085113836, now seen corresponding path program 1 times [2023-08-30 05:05:18,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:05:18,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [369549288] [2023-08-30 05:05:18,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:05:18,236 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:05:18,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:05:18,237 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:05:18,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-08-30 05:05:18,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:05:18,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-30 05:05:18,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:05:18,395 INFO L321 Elim1Store]: treesize reduction 105, result has 17.3 percent of original size [2023-08-30 05:05:18,395 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 29 treesize of output 40 [2023-08-30 05:05:18,542 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:05:18,543 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 05:05:18,543 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:05:18,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [369549288] [2023-08-30 05:05:18,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [369549288] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:05:18,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:05:18,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 05:05:18,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060247753] [2023-08-30 05:05:18,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:05:18,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 05:05:18,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:05:18,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 05:05:18,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 05:05:18,680 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 332 out of 781 [2023-08-30 05:05:18,682 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 40 transitions, 109 flow. Second operand has 3 states, 3 states have (on average 333.6666666666667) internal successors, (1001), 3 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:18,682 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:05:18,682 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 332 of 781 [2023-08-30 05:05:18,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:05:18,940 INFO L130 PetriNetUnfolder]: 1011/1478 cut-off events. [2023-08-30 05:05:18,940 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-08-30 05:05:18,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3006 conditions, 1478 events. 1011/1478 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 5532 event pairs, 784 based on Foata normal form. 0/707 useless extension candidates. Maximal degree in co-relation 2993. Up to 1478 conditions per place. [2023-08-30 05:05:18,945 INFO L137 encePairwiseOnDemand]: 778/781 looper letters, 37 selfloop transitions, 1 changer transitions 0/38 dead transitions. [2023-08-30 05:05:18,945 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 38 transitions, 181 flow [2023-08-30 05:05:18,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:05:18,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:05:18,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1034 transitions. [2023-08-30 05:05:18,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4413145539906103 [2023-08-30 05:05:18,949 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1034 transitions. [2023-08-30 05:05:18,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1034 transitions. [2023-08-30 05:05:18,950 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:05:18,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1034 transitions. [2023-08-30 05:05:18,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 344.6666666666667) internal successors, (1034), 3 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:18,955 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 781.0) internal successors, (3124), 4 states have internal predecessors, (3124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:18,956 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 781.0) internal successors, (3124), 4 states have internal predecessors, (3124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:18,956 INFO L175 Difference]: Start difference. First operand has 52 places, 40 transitions, 109 flow. Second operand 3 states and 1034 transitions. [2023-08-30 05:05:18,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 38 transitions, 181 flow [2023-08-30 05:05:18,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 38 transitions, 174 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 05:05:18,958 INFO L231 Difference]: Finished difference. Result has 48 places, 38 transitions, 100 flow [2023-08-30 05:05:18,958 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=48, PETRI_TRANSITIONS=38} [2023-08-30 05:05:18,958 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -3 predicate places. [2023-08-30 05:05:18,959 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 38 transitions, 100 flow [2023-08-30 05:05:18,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 333.6666666666667) internal successors, (1001), 3 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:18,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:05:18,959 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1] [2023-08-30 05:05:18,972 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-08-30 05:05:19,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:05:19,172 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:05:19,172 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:05:19,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1085113837, now seen corresponding path program 1 times [2023-08-30 05:05:19,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:05:19,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [875655634] [2023-08-30 05:05:19,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:05:19,173 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:05:19,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:05:19,173 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:05:19,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-08-30 05:05:19,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:05:19,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-30 05:05:19,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:05:19,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 05:05:19,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 05:05:19,403 INFO L321 Elim1Store]: treesize reduction 43, result has 41.9 percent of original size [2023-08-30 05:05:19,403 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 36 [2023-08-30 05:05:19,416 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2023-08-30 05:05:19,514 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:05:19,514 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 05:05:19,514 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:05:19,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [875655634] [2023-08-30 05:05:19,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [875655634] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:05:19,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:05:19,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 05:05:19,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242062131] [2023-08-30 05:05:19,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:05:19,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 05:05:19,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:05:19,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 05:05:19,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 05:05:19,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 331 out of 781 [2023-08-30 05:05:19,638 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 38 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 332.6666666666667) internal successors, (998), 3 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:19,638 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:05:19,638 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 331 of 781 [2023-08-30 05:05:19,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:05:19,922 INFO L130 PetriNetUnfolder]: 956/1393 cut-off events. [2023-08-30 05:05:19,922 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-08-30 05:05:19,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2834 conditions, 1393 events. 956/1393 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 5146 event pairs, 740 based on Foata normal form. 0/685 useless extension candidates. Maximal degree in co-relation 2821. Up to 1393 conditions per place. [2023-08-30 05:05:19,928 INFO L137 encePairwiseOnDemand]: 778/781 looper letters, 35 selfloop transitions, 1 changer transitions 0/36 dead transitions. [2023-08-30 05:05:19,928 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 36 transitions, 168 flow [2023-08-30 05:05:19,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:05:19,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:05:19,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1029 transitions. [2023-08-30 05:05:19,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43918053777208704 [2023-08-30 05:05:19,932 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1029 transitions. [2023-08-30 05:05:19,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1029 transitions. [2023-08-30 05:05:19,932 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:05:19,933 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1029 transitions. [2023-08-30 05:05:19,934 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 343.0) internal successors, (1029), 3 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:19,938 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 781.0) internal successors, (3124), 4 states have internal predecessors, (3124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:19,938 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 781.0) internal successors, (3124), 4 states have internal predecessors, (3124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:19,938 INFO L175 Difference]: Start difference. First operand has 48 places, 38 transitions, 100 flow. Second operand 3 states and 1029 transitions. [2023-08-30 05:05:19,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 36 transitions, 168 flow [2023-08-30 05:05:19,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 36 transitions, 167 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:05:19,940 INFO L231 Difference]: Finished difference. Result has 47 places, 36 transitions, 97 flow [2023-08-30 05:05:19,940 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=97, PETRI_PLACES=47, PETRI_TRANSITIONS=36} [2023-08-30 05:05:19,941 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -4 predicate places. [2023-08-30 05:05:19,941 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 36 transitions, 97 flow [2023-08-30 05:05:19,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 332.6666666666667) internal successors, (998), 3 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:19,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:05:19,941 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1] [2023-08-30 05:05:19,953 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-08-30 05:05:20,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:05:20,151 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:05:20,151 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:05:20,152 INFO L85 PathProgramCache]: Analyzing trace with hash -721211347, now seen corresponding path program 1 times [2023-08-30 05:05:20,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:05:20,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [906809349] [2023-08-30 05:05:20,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:05:20,152 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:05:20,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:05:20,154 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:05:20,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-08-30 05:05:20,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:05:20,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-30 05:05:20,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:05:20,332 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2023-08-30 05:05:20,333 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 42 [2023-08-30 05:05:20,397 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:05:20,397 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 05:05:20,398 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:05:20,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [906809349] [2023-08-30 05:05:20,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [906809349] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:05:20,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:05:20,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 05:05:20,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771994843] [2023-08-30 05:05:20,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:05:20,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 05:05:20,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:05:20,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 05:05:20,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 05:05:20,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 326 out of 781 [2023-08-30 05:05:20,612 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 36 transitions, 97 flow. Second operand has 5 states, 5 states have (on average 327.2) internal successors, (1636), 5 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:20,612 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:05:20,612 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 326 of 781 [2023-08-30 05:05:20,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:05:21,025 INFO L130 PetriNetUnfolder]: 1577/2302 cut-off events. [2023-08-30 05:05:21,025 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-08-30 05:05:21,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4671 conditions, 2302 events. 1577/2302 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 10264 event pairs, 740 based on Foata normal form. 0/1122 useless extension candidates. Maximal degree in co-relation 4657. Up to 1389 conditions per place. [2023-08-30 05:05:21,034 INFO L137 encePairwiseOnDemand]: 776/781 looper letters, 60 selfloop transitions, 4 changer transitions 0/64 dead transitions. [2023-08-30 05:05:21,034 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 64 transitions, 286 flow [2023-08-30 05:05:21,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 05:05:21,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 05:05:21,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1693 transitions. [2023-08-30 05:05:21,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43354673495518564 [2023-08-30 05:05:21,039 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1693 transitions. [2023-08-30 05:05:21,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1693 transitions. [2023-08-30 05:05:21,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:05:21,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1693 transitions. [2023-08-30 05:05:21,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 338.6) internal successors, (1693), 5 states have internal predecessors, (1693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:21,047 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 781.0) internal successors, (4686), 6 states have internal predecessors, (4686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:21,048 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 781.0) internal successors, (4686), 6 states have internal predecessors, (4686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:21,048 INFO L175 Difference]: Start difference. First operand has 47 places, 36 transitions, 97 flow. Second operand 5 states and 1693 transitions. [2023-08-30 05:05:21,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 64 transitions, 286 flow [2023-08-30 05:05:21,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 64 transitions, 285 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:05:21,050 INFO L231 Difference]: Finished difference. Result has 51 places, 37 transitions, 112 flow [2023-08-30 05:05:21,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=112, PETRI_PLACES=51, PETRI_TRANSITIONS=37} [2023-08-30 05:05:21,051 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 0 predicate places. [2023-08-30 05:05:21,051 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 37 transitions, 112 flow [2023-08-30 05:05:21,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 327.2) internal successors, (1636), 5 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:21,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:05:21,052 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1] [2023-08-30 05:05:21,061 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-08-30 05:05:21,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:05:21,261 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:05:21,261 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:05:21,261 INFO L85 PathProgramCache]: Analyzing trace with hash -721211349, now seen corresponding path program 1 times [2023-08-30 05:05:21,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:05:21,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [322473329] [2023-08-30 05:05:21,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:05:21,261 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:05:21,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:05:21,263 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:05:21,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-08-30 05:05:21,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:05:21,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 05:05:21,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:05:21,416 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2023-08-30 05:05:21,417 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 50 [2023-08-30 05:05:21,440 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:05:21,440 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 05:05:21,441 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:05:21,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [322473329] [2023-08-30 05:05:21,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [322473329] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:05:21,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:05:21,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 05:05:21,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788500439] [2023-08-30 05:05:21,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:05:21,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 05:05:21,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:05:21,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 05:05:21,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 05:05:21,616 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 781 [2023-08-30 05:05:21,617 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 37 transitions, 112 flow. Second operand has 4 states, 4 states have (on average 325.5) internal successors, (1302), 4 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:21,618 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:05:21,618 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 781 [2023-08-30 05:05:21,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:05:21,889 INFO L130 PetriNetUnfolder]: 845/1250 cut-off events. [2023-08-30 05:05:21,889 INFO L131 PetriNetUnfolder]: For 265/265 co-relation queries the response was YES. [2023-08-30 05:05:21,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2802 conditions, 1250 events. 845/1250 cut-off events. For 265/265 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4511 event pairs, 635 based on Foata normal form. 0/816 useless extension candidates. Maximal degree in co-relation 2786. Up to 1246 conditions per place. [2023-08-30 05:05:21,895 INFO L137 encePairwiseOnDemand]: 776/781 looper letters, 32 selfloop transitions, 2 changer transitions 0/34 dead transitions. [2023-08-30 05:05:21,896 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 34 transitions, 174 flow [2023-08-30 05:05:21,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 05:05:21,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 05:05:21,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1330 transitions. [2023-08-30 05:05:21,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42573623559539053 [2023-08-30 05:05:21,900 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1330 transitions. [2023-08-30 05:05:21,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1330 transitions. [2023-08-30 05:05:21,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:05:21,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1330 transitions. [2023-08-30 05:05:21,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 332.5) internal successors, (1330), 4 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:21,908 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 781.0) internal successors, (3905), 5 states have internal predecessors, (3905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:21,908 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 781.0) internal successors, (3905), 5 states have internal predecessors, (3905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:21,909 INFO L175 Difference]: Start difference. First operand has 51 places, 37 transitions, 112 flow. Second operand 4 states and 1330 transitions. [2023-08-30 05:05:21,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 34 transitions, 174 flow [2023-08-30 05:05:21,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 34 transitions, 168 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 05:05:21,910 INFO L231 Difference]: Finished difference. Result has 48 places, 34 transitions, 104 flow [2023-08-30 05:05:21,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=104, PETRI_PLACES=48, PETRI_TRANSITIONS=34} [2023-08-30 05:05:21,911 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -3 predicate places. [2023-08-30 05:05:21,911 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 34 transitions, 104 flow [2023-08-30 05:05:21,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 325.5) internal successors, (1302), 4 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:21,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:05:21,912 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2023-08-30 05:05:21,921 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-08-30 05:05:22,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:05:22,121 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:05:22,122 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:05:22,122 INFO L85 PathProgramCache]: Analyzing trace with hash -882624075, now seen corresponding path program 1 times [2023-08-30 05:05:22,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:05:22,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [602971720] [2023-08-30 05:05:22,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:05:22,122 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:05:22,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:05:22,123 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:05:22,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-08-30 05:05:22,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:05:22,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 05:05:22,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:05:22,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 05:05:22,327 INFO L321 Elim1Store]: treesize reduction 62, result has 31.1 percent of original size [2023-08-30 05:05:22,327 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 38 [2023-08-30 05:05:22,351 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 342 treesize of output 334 [2023-08-30 05:05:22,436 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:05:22,437 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 05:05:22,437 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:05:22,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [602971720] [2023-08-30 05:05:22,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [602971720] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:05:22,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:05:22,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 05:05:22,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663497370] [2023-08-30 05:05:22,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:05:22,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 05:05:22,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:05:22,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 05:05:22,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 05:05:22,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 333 out of 781 [2023-08-30 05:05:22,555 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 34 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 335.3333333333333) internal successors, (1006), 3 states have internal predecessors, (1006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:22,555 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:05:22,555 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 333 of 781 [2023-08-30 05:05:22,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:05:22,738 INFO L130 PetriNetUnfolder]: 789/1162 cut-off events. [2023-08-30 05:05:22,738 INFO L131 PetriNetUnfolder]: For 154/154 co-relation queries the response was YES. [2023-08-30 05:05:22,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2560 conditions, 1162 events. 789/1162 cut-off events. For 154/154 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4098 event pairs, 591 based on Foata normal form. 0/780 useless extension candidates. Maximal degree in co-relation 2544. Up to 1162 conditions per place. [2023-08-30 05:05:22,741 INFO L137 encePairwiseOnDemand]: 778/781 looper letters, 31 selfloop transitions, 1 changer transitions 0/32 dead transitions. [2023-08-30 05:05:22,742 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 32 transitions, 164 flow [2023-08-30 05:05:22,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:05:22,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:05:22,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1030 transitions. [2023-08-30 05:05:22,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43960734101579174 [2023-08-30 05:05:22,745 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1030 transitions. [2023-08-30 05:05:22,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1030 transitions. [2023-08-30 05:05:22,746 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:05:22,746 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1030 transitions. [2023-08-30 05:05:22,748 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 343.3333333333333) internal successors, (1030), 3 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:22,751 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 781.0) internal successors, (3124), 4 states have internal predecessors, (3124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:22,751 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 781.0) internal successors, (3124), 4 states have internal predecessors, (3124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:22,751 INFO L175 Difference]: Start difference. First operand has 48 places, 34 transitions, 104 flow. Second operand 3 states and 1030 transitions. [2023-08-30 05:05:22,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 32 transitions, 164 flow [2023-08-30 05:05:22,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 32 transitions, 161 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 05:05:22,753 INFO L231 Difference]: Finished difference. Result has 46 places, 32 transitions, 99 flow [2023-08-30 05:05:22,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=99, PETRI_PLACES=46, PETRI_TRANSITIONS=32} [2023-08-30 05:05:22,753 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -5 predicate places. [2023-08-30 05:05:22,753 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 32 transitions, 99 flow [2023-08-30 05:05:22,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 335.3333333333333) internal successors, (1006), 3 states have internal predecessors, (1006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:22,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:05:22,754 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2023-08-30 05:05:22,766 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-08-30 05:05:22,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:05:22,964 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:05:22,964 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:05:22,964 INFO L85 PathProgramCache]: Analyzing trace with hash -882624074, now seen corresponding path program 1 times [2023-08-30 05:05:22,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:05:22,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [737322466] [2023-08-30 05:05:22,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:05:22,965 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:05:22,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:05:22,966 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:05:22,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-08-30 05:05:23,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:05:23,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-30 05:05:23,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:05:23,112 INFO L321 Elim1Store]: treesize reduction 105, result has 17.3 percent of original size [2023-08-30 05:05:23,114 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 29 [2023-08-30 05:05:23,134 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:05:23,135 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 05:05:23,135 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:05:23,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [737322466] [2023-08-30 05:05:23,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [737322466] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:05:23,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:05:23,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 05:05:23,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749164750] [2023-08-30 05:05:23,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:05:23,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 05:05:23,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:05:23,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 05:05:23,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 05:05:23,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 329 out of 781 [2023-08-30 05:05:23,204 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 32 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 331.3333333333333) internal successors, (994), 3 states have internal predecessors, (994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:23,204 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:05:23,204 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 329 of 781 [2023-08-30 05:05:23,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:05:23,386 INFO L130 PetriNetUnfolder]: 733/1074 cut-off events. [2023-08-30 05:05:23,386 INFO L131 PetriNetUnfolder]: For 139/139 co-relation queries the response was YES. [2023-08-30 05:05:23,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2368 conditions, 1074 events. 733/1074 cut-off events. For 139/139 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3721 event pairs, 547 based on Foata normal form. 0/744 useless extension candidates. Maximal degree in co-relation 2352. Up to 1074 conditions per place. [2023-08-30 05:05:23,389 INFO L137 encePairwiseOnDemand]: 778/781 looper letters, 29 selfloop transitions, 1 changer transitions 0/30 dead transitions. [2023-08-30 05:05:23,389 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 30 transitions, 155 flow [2023-08-30 05:05:23,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:05:23,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:05:23,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1016 transitions. [2023-08-30 05:05:23,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43363209560392657 [2023-08-30 05:05:23,392 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1016 transitions. [2023-08-30 05:05:23,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1016 transitions. [2023-08-30 05:05:23,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:05:23,393 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1016 transitions. [2023-08-30 05:05:23,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 338.6666666666667) internal successors, (1016), 3 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:23,397 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 781.0) internal successors, (3124), 4 states have internal predecessors, (3124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:23,398 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 781.0) internal successors, (3124), 4 states have internal predecessors, (3124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:23,398 INFO L175 Difference]: Start difference. First operand has 46 places, 32 transitions, 99 flow. Second operand 3 states and 1016 transitions. [2023-08-30 05:05:23,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 30 transitions, 155 flow [2023-08-30 05:05:23,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 30 transitions, 154 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:05:23,399 INFO L231 Difference]: Finished difference. Result has 45 places, 30 transitions, 96 flow [2023-08-30 05:05:23,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=45, PETRI_TRANSITIONS=30} [2023-08-30 05:05:23,400 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -6 predicate places. [2023-08-30 05:05:23,400 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 30 transitions, 96 flow [2023-08-30 05:05:23,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 331.3333333333333) internal successors, (994), 3 states have internal predecessors, (994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:23,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:05:23,401 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2023-08-30 05:05:23,411 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 (15)] Forceful destruction successful, exit code 0 [2023-08-30 05:05:23,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:05:23,611 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:05:23,612 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:05:23,612 INFO L85 PathProgramCache]: Analyzing trace with hash -882713886, now seen corresponding path program 1 times [2023-08-30 05:05:23,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:05:23,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [639028405] [2023-08-30 05:05:23,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:05:23,613 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:05:23,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:05:23,614 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:05:23,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-08-30 05:05:23,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:05:23,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-30 05:05:23,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:05:23,771 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2023-08-30 05:05:23,772 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 42 [2023-08-30 05:05:23,837 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:05:23,837 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:05:24,021 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:05:24,021 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:05:24,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [639028405] [2023-08-30 05:05:24,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [639028405] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:05:24,022 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 05:05:24,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2023-08-30 05:05:24,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43257392] [2023-08-30 05:05:24,022 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 05:05:24,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 05:05:24,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:05:24,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 05:05:24,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-08-30 05:05:25,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 781 [2023-08-30 05:05:25,622 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 30 transitions, 96 flow. Second operand has 10 states, 10 states have (on average 326.4) internal successors, (3264), 10 states have internal predecessors, (3264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:25,622 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:05:25,623 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 781 [2023-08-30 05:05:25,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:05:26,268 INFO L130 PetriNetUnfolder]: 1269/1862 cut-off events. [2023-08-30 05:05:26,268 INFO L131 PetriNetUnfolder]: For 92/92 co-relation queries the response was YES. [2023-08-30 05:05:26,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4049 conditions, 1862 events. 1269/1862 cut-off events. For 92/92 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 7925 event pairs, 333 based on Foata normal form. 0/1316 useless extension candidates. Maximal degree in co-relation 4032. Up to 676 conditions per place. [2023-08-30 05:05:26,273 INFO L137 encePairwiseOnDemand]: 776/781 looper letters, 86 selfloop transitions, 6 changer transitions 0/92 dead transitions. [2023-08-30 05:05:26,273 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 92 transitions, 423 flow [2023-08-30 05:05:26,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 05:05:26,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 05:05:26,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2367 transitions. [2023-08-30 05:05:26,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4329614047923907 [2023-08-30 05:05:26,278 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2367 transitions. [2023-08-30 05:05:26,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2367 transitions. [2023-08-30 05:05:26,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:05:26,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2367 transitions. [2023-08-30 05:05:26,284 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 338.14285714285717) internal successors, (2367), 7 states have internal predecessors, (2367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:26,289 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:26,290 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:26,290 INFO L175 Difference]: Start difference. First operand has 45 places, 30 transitions, 96 flow. Second operand 7 states and 2367 transitions. [2023-08-30 05:05:26,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 92 transitions, 423 flow [2023-08-30 05:05:26,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 92 transitions, 422 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:05:26,292 INFO L231 Difference]: Finished difference. Result has 52 places, 32 transitions, 125 flow [2023-08-30 05:05:26,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=125, PETRI_PLACES=52, PETRI_TRANSITIONS=32} [2023-08-30 05:05:26,293 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 1 predicate places. [2023-08-30 05:05:26,293 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 32 transitions, 125 flow [2023-08-30 05:05:26,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 326.4) internal successors, (3264), 10 states have internal predecessors, (3264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:26,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:05:26,294 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:05:26,305 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-08-30 05:05:26,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:05:26,504 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:05:26,504 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:05:26,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1591542639, now seen corresponding path program 1 times [2023-08-30 05:05:26,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:05:26,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1447746769] [2023-08-30 05:05:26,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:05:26,505 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:05:26,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:05:26,506 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:05:26,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-08-30 05:05:26,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:05:26,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-30 05:05:26,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:05:26,664 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2023-08-30 05:05:26,664 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 42 [2023-08-30 05:05:26,726 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:05:26,727 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 05:05:26,727 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:05:26,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1447746769] [2023-08-30 05:05:26,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1447746769] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:05:26,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:05:26,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 05:05:26,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818939231] [2023-08-30 05:05:26,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:05:26,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 05:05:26,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:05:26,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 05:05:26,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 05:05:26,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 326 out of 781 [2023-08-30 05:05:26,924 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 32 transitions, 125 flow. Second operand has 5 states, 5 states have (on average 327.6) internal successors, (1638), 5 states have internal predecessors, (1638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:26,924 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:05:26,924 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 326 of 781 [2023-08-30 05:05:26,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:05:27,404 INFO L130 PetriNetUnfolder]: 1909/2806 cut-off events. [2023-08-30 05:05:27,404 INFO L131 PetriNetUnfolder]: For 1638/1638 co-relation queries the response was YES. [2023-08-30 05:05:27,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6639 conditions, 2806 events. 1909/2806 cut-off events. For 1638/1638 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 12570 event pairs, 975 based on Foata normal form. 0/2042 useless extension candidates. Maximal degree in co-relation 6619. Up to 1858 conditions per place. [2023-08-30 05:05:27,414 INFO L137 encePairwiseOnDemand]: 776/781 looper letters, 50 selfloop transitions, 4 changer transitions 0/54 dead transitions. [2023-08-30 05:05:27,414 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 54 transitions, 311 flow [2023-08-30 05:05:27,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 05:05:27,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 05:05:27,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1677 transitions. [2023-08-30 05:05:27,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.429449423815621 [2023-08-30 05:05:27,417 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1677 transitions. [2023-08-30 05:05:27,417 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1677 transitions. [2023-08-30 05:05:27,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:05:27,417 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1677 transitions. [2023-08-30 05:05:27,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 335.4) internal successors, (1677), 5 states have internal predecessors, (1677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:27,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 781.0) internal successors, (4686), 6 states have internal predecessors, (4686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:27,424 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 781.0) internal successors, (4686), 6 states have internal predecessors, (4686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:27,424 INFO L175 Difference]: Start difference. First operand has 52 places, 32 transitions, 125 flow. Second operand 5 states and 1677 transitions. [2023-08-30 05:05:27,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 54 transitions, 311 flow [2023-08-30 05:05:27,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 54 transitions, 296 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-08-30 05:05:27,427 INFO L231 Difference]: Finished difference. Result has 54 places, 33 transitions, 132 flow [2023-08-30 05:05:27,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=132, PETRI_PLACES=54, PETRI_TRANSITIONS=33} [2023-08-30 05:05:27,427 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 3 predicate places. [2023-08-30 05:05:27,427 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 33 transitions, 132 flow [2023-08-30 05:05:27,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 327.6) internal successors, (1638), 5 states have internal predecessors, (1638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:27,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:05:27,428 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:05:27,437 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-08-30 05:05:27,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:05:27,637 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:05:27,637 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:05:27,637 INFO L85 PathProgramCache]: Analyzing trace with hash -2093179504, now seen corresponding path program 1 times [2023-08-30 05:05:27,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:05:27,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [926038307] [2023-08-30 05:05:27,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:05:27,638 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:05:27,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:05:27,639 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:05:27,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-08-30 05:05:27,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:05:27,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-30 05:05:27,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:05:27,817 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2023-08-30 05:05:27,818 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 42 [2023-08-30 05:05:27,891 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:05:27,891 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:05:28,127 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:05:28,127 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:05:28,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [926038307] [2023-08-30 05:05:28,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [926038307] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:05:28,127 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 05:05:28,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2023-08-30 05:05:28,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186953746] [2023-08-30 05:05:28,128 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 05:05:28,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 05:05:28,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:05:28,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 05:05:28,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-08-30 05:05:29,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 781 [2023-08-30 05:05:29,541 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 33 transitions, 132 flow. Second operand has 10 states, 10 states have (on average 326.8) internal successors, (3268), 10 states have internal predecessors, (3268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:29,541 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:05:29,541 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 781 [2023-08-30 05:05:29,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:05:30,493 INFO L130 PetriNetUnfolder]: 3189/4694 cut-off events. [2023-08-30 05:05:30,493 INFO L131 PetriNetUnfolder]: For 2515/2515 co-relation queries the response was YES. [2023-08-30 05:05:30,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11675 conditions, 4694 events. 3189/4694 cut-off events. For 2515/2515 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 23433 event pairs, 975 based on Foata normal form. 0/3938 useless extension candidates. Maximal degree in co-relation 11654. Up to 1858 conditions per place. [2023-08-30 05:05:30,507 INFO L137 encePairwiseOnDemand]: 776/781 looper letters, 92 selfloop transitions, 6 changer transitions 0/98 dead transitions. [2023-08-30 05:05:30,507 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 98 transitions, 546 flow [2023-08-30 05:05:30,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 05:05:30,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 05:05:30,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2361 transitions. [2023-08-30 05:05:30,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318639107371502 [2023-08-30 05:05:30,513 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2361 transitions. [2023-08-30 05:05:30,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2361 transitions. [2023-08-30 05:05:30,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:05:30,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2361 transitions. [2023-08-30 05:05:30,518 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 337.2857142857143) internal successors, (2361), 7 states have internal predecessors, (2361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:30,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:30,522 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:30,522 INFO L175 Difference]: Start difference. First operand has 54 places, 33 transitions, 132 flow. Second operand 7 states and 2361 transitions. [2023-08-30 05:05:30,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 98 transitions, 546 flow [2023-08-30 05:05:30,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 98 transitions, 540 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 05:05:30,526 INFO L231 Difference]: Finished difference. Result has 59 places, 35 transitions, 156 flow [2023-08-30 05:05:30,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=156, PETRI_PLACES=59, PETRI_TRANSITIONS=35} [2023-08-30 05:05:30,526 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 8 predicate places. [2023-08-30 05:05:30,526 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 35 transitions, 156 flow [2023-08-30 05:05:30,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 326.8) internal successors, (3268), 10 states have internal predecessors, (3268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:30,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:05:30,527 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1] [2023-08-30 05:05:30,539 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-08-30 05:05:30,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:05:30,738 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:05:30,738 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:05:30,738 INFO L85 PathProgramCache]: Analyzing trace with hash 2115524674, now seen corresponding path program 2 times [2023-08-30 05:05:30,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:05:30,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1270341043] [2023-08-30 05:05:30,739 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 05:05:30,739 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:05:30,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:05:30,740 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:05:30,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-08-30 05:05:30,858 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 05:05:30,858 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:05:30,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-30 05:05:30,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:05:30,926 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2023-08-30 05:05:30,927 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 42 [2023-08-30 05:05:31,014 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:05:31,014 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:05:31,270 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:05:31,270 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:05:31,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1270341043] [2023-08-30 05:05:31,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1270341043] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:05:31,270 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 05:05:31,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 11 [2023-08-30 05:05:31,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827616862] [2023-08-30 05:05:31,270 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 05:05:31,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 05:05:31,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:05:31,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 05:05:31,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-08-30 05:05:33,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 781 [2023-08-30 05:05:33,542 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 35 transitions, 156 flow. Second operand has 12 states, 12 states have (on average 326.5) internal successors, (3918), 12 states have internal predecessors, (3918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:33,542 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:05:33,542 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 781 [2023-08-30 05:05:33,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:05:34,671 INFO L130 PetriNetUnfolder]: 2845/4248 cut-off events. [2023-08-30 05:05:34,671 INFO L131 PetriNetUnfolder]: For 3566/3566 co-relation queries the response was YES. [2023-08-30 05:05:34,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11170 conditions, 4248 events. 2845/4248 cut-off events. For 3566/3566 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 22077 event pairs, 111 based on Foata normal form. 204/3868 useless extension candidates. Maximal degree in co-relation 11147. Up to 1000 conditions per place. [2023-08-30 05:05:34,686 INFO L137 encePairwiseOnDemand]: 776/781 looper letters, 112 selfloop transitions, 6 changer transitions 0/118 dead transitions. [2023-08-30 05:05:34,686 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 118 transitions, 685 flow [2023-08-30 05:05:34,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 05:05:34,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 05:05:34,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2703 transitions. [2023-08-30 05:05:34,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43261843790012805 [2023-08-30 05:05:34,691 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2703 transitions. [2023-08-30 05:05:34,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2703 transitions. [2023-08-30 05:05:34,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:05:34,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2703 transitions. [2023-08-30 05:05:34,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 337.875) internal successors, (2703), 8 states have internal predecessors, (2703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:34,700 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 781.0) internal successors, (7029), 9 states have internal predecessors, (7029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:34,701 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 781.0) internal successors, (7029), 9 states have internal predecessors, (7029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:34,701 INFO L175 Difference]: Start difference. First operand has 59 places, 35 transitions, 156 flow. Second operand 8 states and 2703 transitions. [2023-08-30 05:05:34,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 118 transitions, 685 flow [2023-08-30 05:05:34,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 118 transitions, 643 flow, removed 10 selfloop flow, removed 7 redundant places. [2023-08-30 05:05:34,709 INFO L231 Difference]: Finished difference. Result has 58 places, 33 transitions, 136 flow [2023-08-30 05:05:34,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=136, PETRI_PLACES=58, PETRI_TRANSITIONS=33} [2023-08-30 05:05:34,710 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 7 predicate places. [2023-08-30 05:05:34,710 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 33 transitions, 136 flow [2023-08-30 05:05:34,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 326.5) internal successors, (3918), 12 states have internal predecessors, (3918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:34,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:05:34,711 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:05:34,724 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-08-30 05:05:34,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:05:34,921 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:05:34,921 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:05:34,922 INFO L85 PathProgramCache]: Analyzing trace with hash -462939428, now seen corresponding path program 1 times [2023-08-30 05:05:34,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:05:34,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [619268066] [2023-08-30 05:05:34,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:05:34,922 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:05:34,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:05:34,923 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:05:34,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-08-30 05:05:35,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:05:35,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-30 05:05:35,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:05:35,109 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2023-08-30 05:05:35,109 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 42 [2023-08-30 05:05:35,169 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:05:35,169 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 05:05:35,169 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:05:35,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [619268066] [2023-08-30 05:05:35,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [619268066] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:05:35,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:05:35,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 05:05:35,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204989318] [2023-08-30 05:05:35,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:05:35,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 05:05:35,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:05:35,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 05:05:35,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 05:05:35,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 326 out of 781 [2023-08-30 05:05:35,357 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 33 transitions, 136 flow. Second operand has 5 states, 5 states have (on average 328.0) internal successors, (1640), 5 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:35,357 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:05:35,357 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 326 of 781 [2023-08-30 05:05:35,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:05:36,131 INFO L130 PetriNetUnfolder]: 4089/6108 cut-off events. [2023-08-30 05:05:36,131 INFO L131 PetriNetUnfolder]: For 4326/4326 co-relation queries the response was YES. [2023-08-30 05:05:36,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15425 conditions, 6108 events. 4089/6108 cut-off events. For 4326/4326 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 32042 event pairs, 2431 based on Foata normal form. 0/5232 useless extension candidates. Maximal degree in co-relation 15405. Up to 4244 conditions per place. [2023-08-30 05:05:36,149 INFO L137 encePairwiseOnDemand]: 776/781 looper letters, 50 selfloop transitions, 4 changer transitions 0/54 dead transitions. [2023-08-30 05:05:36,149 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 54 transitions, 327 flow [2023-08-30 05:05:36,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 05:05:36,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 05:05:36,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1673 transitions. [2023-08-30 05:05:36,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4284250960307298 [2023-08-30 05:05:36,153 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1673 transitions. [2023-08-30 05:05:36,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1673 transitions. [2023-08-30 05:05:36,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:05:36,153 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1673 transitions. [2023-08-30 05:05:36,155 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 334.6) internal successors, (1673), 5 states have internal predecessors, (1673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:36,157 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 781.0) internal successors, (4686), 6 states have internal predecessors, (4686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:36,157 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 781.0) internal successors, (4686), 6 states have internal predecessors, (4686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:36,157 INFO L175 Difference]: Start difference. First operand has 58 places, 33 transitions, 136 flow. Second operand 5 states and 1673 transitions. [2023-08-30 05:05:36,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 54 transitions, 327 flow [2023-08-30 05:05:36,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 54 transitions, 309 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-30 05:05:36,161 INFO L231 Difference]: Finished difference. Result has 57 places, 34 transitions, 141 flow [2023-08-30 05:05:36,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=141, PETRI_PLACES=57, PETRI_TRANSITIONS=34} [2023-08-30 05:05:36,162 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 6 predicate places. [2023-08-30 05:05:36,162 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 34 transitions, 141 flow [2023-08-30 05:05:36,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 328.0) internal successors, (1640), 5 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:36,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:05:36,163 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:05:36,179 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-08-30 05:05:36,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:05:36,373 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:05:36,374 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:05:36,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1466219012, now seen corresponding path program 1 times [2023-08-30 05:05:36,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:05:36,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1093496438] [2023-08-30 05:05:36,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:05:36,374 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:05:36,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:05:36,375 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:05:36,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-08-30 05:05:36,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:05:36,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-30 05:05:36,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:05:36,564 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2023-08-30 05:05:36,564 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 42 [2023-08-30 05:05:36,630 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:05:36,630 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:05:36,821 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:05:36,821 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:05:36,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1093496438] [2023-08-30 05:05:36,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1093496438] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:05:36,821 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 05:05:36,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2023-08-30 05:05:36,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026461368] [2023-08-30 05:05:36,821 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 05:05:36,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 05:05:36,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:05:36,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 05:05:36,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-08-30 05:05:38,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 781 [2023-08-30 05:05:38,277 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 34 transitions, 141 flow. Second operand has 10 states, 10 states have (on average 327.2) internal successors, (3272), 10 states have internal predecessors, (3272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:38,277 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:05:38,277 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 781 [2023-08-30 05:05:38,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:05:39,861 INFO L130 PetriNetUnfolder]: 6577/9828 cut-off events. [2023-08-30 05:05:39,861 INFO L131 PetriNetUnfolder]: For 6943/6943 co-relation queries the response was YES. [2023-08-30 05:05:39,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26052 conditions, 9828 events. 6577/9828 cut-off events. For 6943/6943 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 56006 event pairs, 2431 based on Foata normal form. 0/9536 useless extension candidates. Maximal degree in co-relation 26031. Up to 4244 conditions per place. [2023-08-30 05:05:39,897 INFO L137 encePairwiseOnDemand]: 776/781 looper letters, 90 selfloop transitions, 6 changer transitions 0/96 dead transitions. [2023-08-30 05:05:39,897 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 96 transitions, 563 flow [2023-08-30 05:05:39,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 05:05:39,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 05:05:39,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2351 transitions. [2023-08-30 05:05:39,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43003475397841595 [2023-08-30 05:05:39,901 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2351 transitions. [2023-08-30 05:05:39,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2351 transitions. [2023-08-30 05:05:39,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:05:39,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2351 transitions. [2023-08-30 05:05:39,905 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 335.85714285714283) internal successors, (2351), 7 states have internal predecessors, (2351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:39,907 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:39,908 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 781.0) internal successors, (6248), 8 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:39,908 INFO L175 Difference]: Start difference. First operand has 57 places, 34 transitions, 141 flow. Second operand 7 states and 2351 transitions. [2023-08-30 05:05:39,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 96 transitions, 563 flow [2023-08-30 05:05:39,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 96 transitions, 557 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 05:05:39,913 INFO L231 Difference]: Finished difference. Result has 62 places, 36 transitions, 165 flow [2023-08-30 05:05:39,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=165, PETRI_PLACES=62, PETRI_TRANSITIONS=36} [2023-08-30 05:05:39,914 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 11 predicate places. [2023-08-30 05:05:39,914 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 36 transitions, 165 flow [2023-08-30 05:05:39,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 327.2) internal successors, (3272), 10 states have internal predecessors, (3272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:39,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:05:39,915 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:05:39,925 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2023-08-30 05:05:40,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:05:40,121 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:05:40,121 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:05:40,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1500743248, now seen corresponding path program 2 times [2023-08-30 05:05:40,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:05:40,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [806807160] [2023-08-30 05:05:40,122 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 05:05:40,122 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:05:40,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:05:40,123 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:05:40,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-08-30 05:05:40,267 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 05:05:40,267 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:05:40,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 05:05:40,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:05:40,303 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:05:40,303 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:05:40,357 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:05:40,357 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:05:40,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [806807160] [2023-08-30 05:05:40,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [806807160] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:05:40,358 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 05:05:40,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-08-30 05:05:40,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901072051] [2023-08-30 05:05:40,358 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 05:05:40,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 05:05:40,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:05:40,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 05:05:40,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-08-30 05:05:40,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 335 out of 781 [2023-08-30 05:05:40,466 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 36 transitions, 165 flow. Second operand has 10 states, 10 states have (on average 336.6) internal successors, (3366), 10 states have internal predecessors, (3366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:40,466 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:05:40,467 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 335 of 781 [2023-08-30 05:05:40,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:05:42,071 INFO L130 PetriNetUnfolder]: 5675/8648 cut-off events. [2023-08-30 05:05:42,071 INFO L131 PetriNetUnfolder]: For 8811/8811 co-relation queries the response was YES. [2023-08-30 05:05:42,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24153 conditions, 8648 events. 5675/8648 cut-off events. For 8811/8811 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 51371 event pairs, 337 based on Foata normal form. 556/9204 useless extension candidates. Maximal degree in co-relation 24130. Up to 1996 conditions per place. [2023-08-30 05:05:42,096 INFO L137 encePairwiseOnDemand]: 778/781 looper letters, 113 selfloop transitions, 4 changer transitions 0/117 dead transitions. [2023-08-30 05:05:42,097 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 117 transitions, 713 flow [2023-08-30 05:05:42,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 05:05:42,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 05:05:42,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2102 transitions. [2023-08-30 05:05:42,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4485702091335894 [2023-08-30 05:05:42,100 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2102 transitions. [2023-08-30 05:05:42,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2102 transitions. [2023-08-30 05:05:42,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:05:42,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2102 transitions. [2023-08-30 05:05:42,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 350.3333333333333) internal successors, (2102), 6 states have internal predecessors, (2102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:42,106 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 781.0) internal successors, (5467), 7 states have internal predecessors, (5467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:42,106 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 781.0) internal successors, (5467), 7 states have internal predecessors, (5467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:42,106 INFO L175 Difference]: Start difference. First operand has 62 places, 36 transitions, 165 flow. Second operand 6 states and 2102 transitions. [2023-08-30 05:05:42,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 117 transitions, 713 flow [2023-08-30 05:05:42,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 117 transitions, 671 flow, removed 10 selfloop flow, removed 7 redundant places. [2023-08-30 05:05:42,132 INFO L231 Difference]: Finished difference. Result has 59 places, 34 transitions, 141 flow [2023-08-30 05:05:42,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=141, PETRI_PLACES=59, PETRI_TRANSITIONS=34} [2023-08-30 05:05:42,132 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 8 predicate places. [2023-08-30 05:05:42,132 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 34 transitions, 141 flow [2023-08-30 05:05:42,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 336.6) internal successors, (3366), 10 states have internal predecessors, (3366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:42,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:05:42,133 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:05:42,141 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 (22)] Forceful destruction successful, exit code 0 [2023-08-30 05:05:42,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:05:42,334 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:05:42,335 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:05:42,335 INFO L85 PathProgramCache]: Analyzing trace with hash -287153668, now seen corresponding path program 2 times [2023-08-30 05:05:42,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:05:42,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1811265766] [2023-08-30 05:05:42,335 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 05:05:42,335 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:05:42,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:05:42,336 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:05:42,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-08-30 05:05:42,483 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 05:05:42,483 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:05:42,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-30 05:05:42,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:05:42,553 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2023-08-30 05:05:42,554 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 42 [2023-08-30 05:05:42,679 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:05:42,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:05:42,978 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:05:42,979 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:05:42,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1811265766] [2023-08-30 05:05:42,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1811265766] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:05:42,979 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 05:05:42,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 11 [2023-08-30 05:05:42,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695355122] [2023-08-30 05:05:42,980 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 05:05:42,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 05:05:42,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:05:42,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 05:05:42,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-08-30 05:05:45,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 325 out of 781 [2023-08-30 05:05:45,075 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 34 transitions, 141 flow. Second operand has 12 states, 12 states have (on average 327.1666666666667) internal successors, (3926), 12 states have internal predecessors, (3926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:45,075 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:05:45,075 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 325 of 781 [2023-08-30 05:05:45,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:05:46,522 INFO L130 PetriNetUnfolder]: 4872/7579 cut-off events. [2023-08-30 05:05:46,522 INFO L131 PetriNetUnfolder]: For 4323/4323 co-relation queries the response was YES. [2023-08-30 05:05:46,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19628 conditions, 7579 events. 4872/7579 cut-off events. For 4323/4323 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 44413 event pairs, 576 based on Foata normal form. 532/8111 useless extension candidates. Maximal degree in co-relation 19609. Up to 1638 conditions per place. [2023-08-30 05:05:46,546 INFO L137 encePairwiseOnDemand]: 776/781 looper letters, 95 selfloop transitions, 6 changer transitions 0/101 dead transitions. [2023-08-30 05:05:46,546 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 101 transitions, 562 flow [2023-08-30 05:05:46,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 05:05:46,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 05:05:46,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2681 transitions. [2023-08-30 05:05:46,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4290973111395647 [2023-08-30 05:05:46,551 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2681 transitions. [2023-08-30 05:05:46,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2681 transitions. [2023-08-30 05:05:46,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:05:46,552 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2681 transitions. [2023-08-30 05:05:46,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 335.125) internal successors, (2681), 8 states have internal predecessors, (2681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:46,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 781.0) internal successors, (7029), 9 states have internal predecessors, (7029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:46,558 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 781.0) internal successors, (7029), 9 states have internal predecessors, (7029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:46,558 INFO L175 Difference]: Start difference. First operand has 59 places, 34 transitions, 141 flow. Second operand 8 states and 2681 transitions. [2023-08-30 05:05:46,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 101 transitions, 562 flow [2023-08-30 05:05:46,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 101 transitions, 518 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-08-30 05:05:46,582 INFO L231 Difference]: Finished difference. Result has 57 places, 32 transitions, 123 flow [2023-08-30 05:05:46,582 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=123, PETRI_PLACES=57, PETRI_TRANSITIONS=32} [2023-08-30 05:05:46,583 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 6 predicate places. [2023-08-30 05:05:46,583 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 32 transitions, 123 flow [2023-08-30 05:05:46,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 327.1666666666667) internal successors, (3926), 12 states have internal predecessors, (3926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:46,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:05:46,584 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:05:46,592 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 05:05:46,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:05:46,785 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:05:46,785 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:05:46,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1532449246, now seen corresponding path program 1 times [2023-08-30 05:05:46,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:05:46,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [979419558] [2023-08-30 05:05:46,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:05:46,786 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:05:46,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:05:46,787 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:05:46,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-08-30 05:05:46,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:05:46,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 05:05:46,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:05:47,032 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:05:47,033 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 05:05:47,033 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:05:47,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [979419558] [2023-08-30 05:05:47,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [979419558] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:05:47,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:05:47,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 05:05:47,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498218753] [2023-08-30 05:05:47,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:05:47,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 05:05:47,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:05:47,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 05:05:47,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 05:05:47,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 781 [2023-08-30 05:05:47,114 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 32 transitions, 123 flow. Second operand has 4 states, 4 states have (on average 327.25) internal successors, (1309), 4 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:47,114 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:05:47,114 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 781 [2023-08-30 05:05:47,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:05:48,302 INFO L130 PetriNetUnfolder]: 4872/7563 cut-off events. [2023-08-30 05:05:48,302 INFO L131 PetriNetUnfolder]: For 3053/3053 co-relation queries the response was YES. [2023-08-30 05:05:48,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18838 conditions, 7563 events. 4872/7563 cut-off events. For 3053/3053 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 43621 event pairs, 3710 based on Foata normal form. 16/7579 useless extension candidates. Maximal degree in co-relation 18821. Up to 5788 conditions per place. [2023-08-30 05:05:48,321 INFO L137 encePairwiseOnDemand]: 777/781 looper letters, 45 selfloop transitions, 2 changer transitions 21/68 dead transitions. [2023-08-30 05:05:48,321 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 68 transitions, 380 flow [2023-08-30 05:05:48,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 05:05:48,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 05:05:48,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1342 transitions. [2023-08-30 05:05:48,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4295774647887324 [2023-08-30 05:05:48,323 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1342 transitions. [2023-08-30 05:05:48,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1342 transitions. [2023-08-30 05:05:48,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:05:48,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1342 transitions. [2023-08-30 05:05:48,325 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 335.5) internal successors, (1342), 4 states have internal predecessors, (1342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:48,327 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 781.0) internal successors, (3905), 5 states have internal predecessors, (3905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:48,327 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 781.0) internal successors, (3905), 5 states have internal predecessors, (3905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:48,327 INFO L175 Difference]: Start difference. First operand has 57 places, 32 transitions, 123 flow. Second operand 4 states and 1342 transitions. [2023-08-30 05:05:48,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 68 transitions, 380 flow [2023-08-30 05:05:48,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 68 transitions, 355 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-30 05:05:48,330 INFO L231 Difference]: Finished difference. Result has 56 places, 32 transitions, 122 flow [2023-08-30 05:05:48,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=122, PETRI_PLACES=56, PETRI_TRANSITIONS=32} [2023-08-30 05:05:48,331 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 5 predicate places. [2023-08-30 05:05:48,331 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 32 transitions, 122 flow [2023-08-30 05:05:48,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 327.25) internal successors, (1309), 4 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:48,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:05:48,332 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:05:48,342 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Ended with exit code 0 [2023-08-30 05:05:48,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:05:48,542 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:05:48,543 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:05:48,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1800459101, now seen corresponding path program 1 times [2023-08-30 05:05:48,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:05:48,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1439157007] [2023-08-30 05:05:48,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:05:48,543 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:05:48,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:05:48,544 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:05:48,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-08-30 05:05:48,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:05:48,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 05:05:48,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:05:48,801 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:05:48,801 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 05:05:48,801 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:05:48,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1439157007] [2023-08-30 05:05:48,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1439157007] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:05:48,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:05:48,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 05:05:48,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022686270] [2023-08-30 05:05:48,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:05:48,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 05:05:48,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:05:48,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 05:05:48,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 05:05:48,910 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 781 [2023-08-30 05:05:48,911 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 32 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 327.5) internal successors, (1310), 4 states have internal predecessors, (1310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:48,911 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:05:48,911 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 781 [2023-08-30 05:05:48,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:05:49,773 INFO L130 PetriNetUnfolder]: 4115/6362 cut-off events. [2023-08-30 05:05:49,773 INFO L131 PetriNetUnfolder]: For 3031/3031 co-relation queries the response was YES. [2023-08-30 05:05:49,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16428 conditions, 6362 events. 4115/6362 cut-off events. For 3031/3031 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 35238 event pairs, 3151 based on Foata normal form. 12/6374 useless extension candidates. Maximal degree in co-relation 16410. Up to 4905 conditions per place. [2023-08-30 05:05:49,790 INFO L137 encePairwiseOnDemand]: 777/781 looper letters, 45 selfloop transitions, 2 changer transitions 19/66 dead transitions. [2023-08-30 05:05:49,790 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 66 transitions, 372 flow [2023-08-30 05:05:49,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 05:05:49,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 05:05:49,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1340 transitions. [2023-08-30 05:05:49,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42893725992317544 [2023-08-30 05:05:49,792 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1340 transitions. [2023-08-30 05:05:49,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1340 transitions. [2023-08-30 05:05:49,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:05:49,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1340 transitions. [2023-08-30 05:05:49,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 335.0) internal successors, (1340), 4 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:49,796 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 781.0) internal successors, (3905), 5 states have internal predecessors, (3905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:49,796 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 781.0) internal successors, (3905), 5 states have internal predecessors, (3905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:49,796 INFO L175 Difference]: Start difference. First operand has 56 places, 32 transitions, 122 flow. Second operand 4 states and 1340 transitions. [2023-08-30 05:05:49,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 66 transitions, 372 flow [2023-08-30 05:05:49,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 66 transitions, 352 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-08-30 05:05:49,798 INFO L231 Difference]: Finished difference. Result has 57 places, 32 transitions, 124 flow [2023-08-30 05:05:49,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=124, PETRI_PLACES=57, PETRI_TRANSITIONS=32} [2023-08-30 05:05:49,798 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 6 predicate places. [2023-08-30 05:05:49,798 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 32 transitions, 124 flow [2023-08-30 05:05:49,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 327.5) internal successors, (1310), 4 states have internal predecessors, (1310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:05:49,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:05:49,799 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:05:49,807 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Ended with exit code 0 [2023-08-30 05:05:50,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:05:50,001 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:05:50,001 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:05:50,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1294669698, now seen corresponding path program 1 times [2023-08-30 05:05:50,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:05:50,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [109787637] [2023-08-30 05:05:50,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:05:50,002 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:05:50,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:05:50,003 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:05:50,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-08-30 05:05:50,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:05:50,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 35 conjunts are in the unsatisfiable core [2023-08-30 05:05:50,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:05:50,245 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 178 treesize of output 174 [2023-08-30 05:05:50,886 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 92 [2023-08-30 05:05:51,110 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 05:05:51,110 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 407 treesize of output 183 [2023-08-30 05:05:59,448 WARN L222 SmtUtils]: Spent 8.18s on a formula simplification. DAG size of input: 49 DAG size of output: 48 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 05:06:05,408 WARN L222 SmtUtils]: Spent 5.63s on a formula simplification that was a NOOP. DAG size: 57 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 05:06:11,319 WARN L222 SmtUtils]: Spent 5.41s on a formula simplification. DAG size of input: 68 DAG size of output: 60 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 05:06:11,425 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:06:11,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:06:13,914 INFO L321 Elim1Store]: treesize reduction 132, result has 23.7 percent of original size [2023-08-30 05:06:13,914 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 540 treesize of output 256 [2023-08-30 05:06:13,941 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 05:06:13,942 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 101 treesize of output 87 [2023-08-30 05:06:13,966 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 05:06:13,967 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 87 treesize of output 73 [2023-08-30 05:11:04,067 WARN L222 SmtUtils]: Spent 4.75m on a formula simplification. DAG size of input: 285 DAG size of output: 101 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 05:11:04,393 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:11:04,394 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:11:04,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [109787637] [2023-08-30 05:11:04,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [109787637] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:11:04,394 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 05:11:04,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2023-08-30 05:11:04,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108652160] [2023-08-30 05:11:04,394 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 05:11:04,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-30 05:11:04,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:11:04,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-30 05:11:04,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=480, Unknown=2, NotChecked=0, Total=552 [2023-08-30 05:11:15,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 781 [2023-08-30 05:11:15,602 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 32 transitions, 124 flow. Second operand has 24 states, 24 states have (on average 231.91666666666666) internal successors, (5566), 24 states have internal predecessors, (5566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:11:15,602 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:11:15,602 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 781 [2023-08-30 05:11:15,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:12:55,027 WARN L222 SmtUtils]: Spent 1.63m on a formula simplification. DAG size of input: 107 DAG size of output: 94 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 05:13:04,923 INFO L130 PetriNetUnfolder]: 5457/8471 cut-off events. [2023-08-30 05:13:04,923 INFO L131 PetriNetUnfolder]: For 4821/4821 co-relation queries the response was YES. [2023-08-30 05:13:04,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23195 conditions, 8471 events. 5457/8471 cut-off events. For 4821/4821 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 50994 event pairs, 1307 based on Foata normal form. 2/8473 useless extension candidates. Maximal degree in co-relation 23176. Up to 3131 conditions per place. [2023-08-30 05:13:04,951 INFO L137 encePairwiseOnDemand]: 769/781 looper letters, 181 selfloop transitions, 35 changer transitions 7/223 dead transitions. [2023-08-30 05:13:04,952 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 223 transitions, 1189 flow [2023-08-30 05:13:04,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-30 05:13:04,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-30 05:13:04,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4332 transitions. [2023-08-30 05:13:04,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30815194195475887 [2023-08-30 05:13:04,958 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4332 transitions. [2023-08-30 05:13:04,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4332 transitions. [2023-08-30 05:13:04,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:13:04,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4332 transitions. [2023-08-30 05:13:04,964 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 240.66666666666666) internal successors, (4332), 18 states have internal predecessors, (4332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:13:04,975 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 781.0) internal successors, (14839), 19 states have internal predecessors, (14839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:13:04,976 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 781.0) internal successors, (14839), 19 states have internal predecessors, (14839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:13:04,976 INFO L175 Difference]: Start difference. First operand has 57 places, 32 transitions, 124 flow. Second operand 18 states and 4332 transitions. [2023-08-30 05:13:04,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 223 transitions, 1189 flow [2023-08-30 05:13:04,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 223 transitions, 1135 flow, removed 14 selfloop flow, removed 3 redundant places. [2023-08-30 05:13:04,983 INFO L231 Difference]: Finished difference. Result has 82 places, 64 transitions, 415 flow [2023-08-30 05:13:04,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=415, PETRI_PLACES=82, PETRI_TRANSITIONS=64} [2023-08-30 05:13:04,983 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 31 predicate places. [2023-08-30 05:13:04,983 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 64 transitions, 415 flow [2023-08-30 05:13:04,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 231.91666666666666) internal successors, (5566), 24 states have internal predecessors, (5566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:13:04,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:13:04,985 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:13:05,000 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2023-08-30 05:13:05,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:13:05,197 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:13:05,198 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:13:05,198 INFO L85 PathProgramCache]: Analyzing trace with hash -782062174, now seen corresponding path program 2 times [2023-08-30 05:13:05,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:13:05,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1696617073] [2023-08-30 05:13:05,198 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 05:13:05,198 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:13:05,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:13:05,199 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:13:05,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-08-30 05:13:05,399 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 05:13:05,399 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:13:05,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-30 05:13:05,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:13:05,920 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 05:13:05,920 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 359 treesize of output 139 [2023-08-30 05:13:11,981 WARN L222 SmtUtils]: Spent 5.96s on a formula simplification. DAG size of input: 41 DAG size of output: 36 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 05:13:12,074 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:13:12,074 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:13:13,155 INFO L321 Elim1Store]: treesize reduction 168, result has 2.9 percent of original size [2023-08-30 05:13:13,155 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 522 treesize of output 155 [2023-08-30 05:13:13,319 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:13:13,320 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:13:13,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1696617073] [2023-08-30 05:13:13,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1696617073] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:13:13,320 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 05:13:13,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-08-30 05:13:13,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487233147] [2023-08-30 05:13:13,320 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 05:13:13,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 05:13:13,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:13:13,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 05:13:13,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-08-30 05:13:18,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 291 out of 781 [2023-08-30 05:13:18,363 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 64 transitions, 415 flow. Second operand has 14 states, 14 states have (on average 293.7857142857143) internal successors, (4113), 14 states have internal predecessors, (4113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:13:18,363 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:13:18,363 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 291 of 781 [2023-08-30 05:13:18,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:13:46,696 WARN L222 SmtUtils]: Spent 19.40s on a formula simplification. DAG size of input: 76 DAG size of output: 71 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 05:13:57,544 WARN L222 SmtUtils]: Spent 10.15s on a formula simplification. DAG size of input: 38 DAG size of output: 36 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 05:14:01,944 INFO L130 PetriNetUnfolder]: 11413/18533 cut-off events. [2023-08-30 05:14:01,945 INFO L131 PetriNetUnfolder]: For 94489/94489 co-relation queries the response was YES. [2023-08-30 05:14:01,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84366 conditions, 18533 events. 11413/18533 cut-off events. For 94489/94489 co-relation queries the response was YES. Maximal size of possible extension queue 845. Compared 136745 event pairs, 3258 based on Foata normal form. 40/18573 useless extension candidates. Maximal degree in co-relation 84335. Up to 7804 conditions per place. [2023-08-30 05:14:02,049 INFO L137 encePairwiseOnDemand]: 772/781 looper letters, 219 selfloop transitions, 73 changer transitions 114/406 dead transitions. [2023-08-30 05:14:02,049 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 406 transitions, 3175 flow [2023-08-30 05:14:02,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-08-30 05:14:02,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-08-30 05:14:02,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 8140 transitions. [2023-08-30 05:14:02,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38601982263954093 [2023-08-30 05:14:02,059 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 8140 transitions. [2023-08-30 05:14:02,059 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 8140 transitions. [2023-08-30 05:14:02,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:14:02,061 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 8140 transitions. [2023-08-30 05:14:02,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 301.48148148148147) internal successors, (8140), 27 states have internal predecessors, (8140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:14:02,085 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 781.0) internal successors, (21868), 28 states have internal predecessors, (21868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:14:02,087 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 781.0) internal successors, (21868), 28 states have internal predecessors, (21868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:14:02,087 INFO L175 Difference]: Start difference. First operand has 82 places, 64 transitions, 415 flow. Second operand 27 states and 8140 transitions. [2023-08-30 05:14:02,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 406 transitions, 3175 flow [2023-08-30 05:14:02,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 406 transitions, 3058 flow, removed 38 selfloop flow, removed 3 redundant places. [2023-08-30 05:14:02,202 INFO L231 Difference]: Finished difference. Result has 117 places, 131 transitions, 1040 flow [2023-08-30 05:14:02,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=781, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1040, PETRI_PLACES=117, PETRI_TRANSITIONS=131} [2023-08-30 05:14:02,202 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 66 predicate places. [2023-08-30 05:14:02,202 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 131 transitions, 1040 flow [2023-08-30 05:14:02,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 293.7857142857143) internal successors, (4113), 14 states have internal predecessors, (4113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:14:02,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:14:02,203 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:14:02,212 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Ended with exit code 0 [2023-08-30 05:14:02,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:14:02,404 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 28 more)] === [2023-08-30 05:14:02,404 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:14:02,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1861655934, now seen corresponding path program 3 times [2023-08-30 05:14:02,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 05:14:02,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [510230123] [2023-08-30 05:14:02,405 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 05:14:02,405 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 05:14:02,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 05:14:02,406 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 05:14:02,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2023-08-30 05:14:02,638 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-30 05:14:02,639 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:14:02,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-30 05:14:02,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:14:03,285 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 05:14:03,286 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 500 treesize of output 228 [2023-08-30 05:14:11,225 WARN L222 SmtUtils]: Spent 7.69s on a formula simplification. DAG size of input: 70 DAG size of output: 64 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 05:14:18,094 WARN L222 SmtUtils]: Spent 6.04s on a formula simplification. DAG size of input: 39 DAG size of output: 35 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 05:14:18,224 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:14:18,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:14:20,005 INFO L321 Elim1Store]: treesize reduction 132, result has 23.7 percent of original size [2023-08-30 05:14:20,006 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 619 treesize of output 217 [2023-08-30 05:15:18,909 WARN L222 SmtUtils]: Spent 57.21s on a formula simplification. DAG size of input: 221 DAG size of output: 67 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 05:15:18,912 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 05:15:18,913 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 05:15:18,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [510230123] [2023-08-30 05:15:18,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [510230123] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:15:18,913 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 05:15:18,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 15 [2023-08-30 05:15:18,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144436713] [2023-08-30 05:15:18,913 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 05:15:18,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-30 05:15:18,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 05:15:18,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-30 05:15:18,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2023-08-30 05:15:25,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 289 out of 781 [2023-08-30 05:15:25,078 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 131 transitions, 1040 flow. Second operand has 16 states, 16 states have (on average 291.875) internal successors, (4670), 16 states have internal predecessors, (4670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:15:25,078 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:15:25,078 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 289 of 781 [2023-08-30 05:15:25,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:16:17,714 WARN L222 SmtUtils]: Spent 51.22s on a formula simplification. DAG size of input: 105 DAG size of output: 69 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 05:16:47,023 WARN L222 SmtUtils]: Spent 28.09s on a formula simplification that was a NOOP. DAG size: 72 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 05:17:15,637 WARN L222 SmtUtils]: Spent 28.54s on a formula simplification that was a NOOP. DAG size: 95 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 05:17:18,009 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 05:17:20,025 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 05:17:22,029 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 05:18:09,058 WARN L222 SmtUtils]: Spent 45.54s on a formula simplification. DAG size of input: 132 DAG size of output: 81 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 05:18:39,328 WARN L222 SmtUtils]: Spent 28.22s on a formula simplification that was a NOOP. DAG size: 99 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Killed by 15