./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/weaver/popl20-prod-cons-eq.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/popl20-prod-cons-eq.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 29fee1864b0d56497c32cb33e6aaa24ed5707e21c5b89ec418c6707c5ac52336 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 07:11:09,381 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 07:11:09,384 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 07:11:09,418 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 07:11:09,420 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 07:11:09,422 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 07:11:09,424 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 07:11:09,425 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 07:11:09,427 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 07:11:09,430 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 07:11:09,431 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 07:11:09,433 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 07:11:09,433 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 07:11:09,434 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 07:11:09,435 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 07:11:09,439 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 07:11:09,440 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 07:11:09,441 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 07:11:09,442 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 07:11:09,445 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 07:11:09,446 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 07:11:09,453 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 07:11:09,454 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 07:11:09,455 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 07:11:09,460 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 07:11:09,460 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 07:11:09,460 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 07:11:09,461 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 07:11:09,462 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 07:11:09,462 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 07:11:09,462 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 07:11:09,466 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 07:11:09,467 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 07:11:09,468 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 07:11:09,469 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 07:11:09,469 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 07:11:09,470 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 07:11:09,470 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 07:11:09,470 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 07:11:09,471 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 07:11:09,471 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 07:11:09,472 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-30 07:11:09,499 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 07:11:09,499 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 07:11:09,500 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 07:11:09,500 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 07:11:09,501 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 07:11:09,501 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 07:11:09,502 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 07:11:09,502 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 07:11:09,502 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 07:11:09,502 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 07:11:09,503 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 07:11:09,503 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 07:11:09,503 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 07:11:09,503 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 07:11:09,503 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 07:11:09,503 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 07:11:09,504 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 07:11:09,504 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 07:11:09,504 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 07:11:09,504 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 07:11:09,504 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 07:11:09,504 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 07:11:09,505 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 07:11:09,505 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 07:11:09,505 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 07:11:09,505 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 07:11:09,505 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 07:11:09,505 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 07:11:09,505 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 07:11:09,506 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 07:11:09,506 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 07:11:09,506 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 07:11:09,506 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 07:11:09,506 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 07:11:09,506 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 29fee1864b0d56497c32cb33e6aaa24ed5707e21c5b89ec418c6707c5ac52336 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 07:11:09,746 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 07:11:09,761 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 07:11:09,763 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 07:11:09,764 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 07:11:09,764 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 07:11:09,765 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-prod-cons-eq.wvr.c [2023-08-30 07:11:10,666 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 07:11:10,840 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 07:11:10,840 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-prod-cons-eq.wvr.c [2023-08-30 07:11:10,846 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2261ed25f/7183f34f44404fd68fd50ea9bde8445e/FLAG56f18f0d0 [2023-08-30 07:11:10,860 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2261ed25f/7183f34f44404fd68fd50ea9bde8445e [2023-08-30 07:11:10,862 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 07:11:10,862 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 07:11:10,864 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 07:11:10,865 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 07:11:10,867 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 07:11:10,867 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 07:11:10" (1/1) ... [2023-08-30 07:11:10,868 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34e0921d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:11:10, skipping insertion in model container [2023-08-30 07:11:10,868 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 07:11:10" (1/1) ... [2023-08-30 07:11:10,872 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 07:11:10,898 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 07:11:11,072 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/popl20-prod-cons-eq.wvr.c[4380,4393] [2023-08-30 07:11:11,088 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 07:11:11,098 ERROR L324 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-08-30 07:11:11,099 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@8bb3f74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:11:11, skipping insertion in model container [2023-08-30 07:11:11,099 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 07:11:11,100 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-08-30 07:11:11,101 INFO L158 Benchmark]: Toolchain (without parser) took 238.25ms. Allocated memory is still 75.5MB. Free memory was 53.3MB in the beginning and 42.6MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-08-30 07:11:11,102 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 58.7MB. Free memory is still 36.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 07:11:11,102 INFO L158 Benchmark]: CACSL2BoogieTranslator took 235.61ms. Allocated memory is still 75.5MB. Free memory was 53.0MB in the beginning and 42.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-08-30 07:11:11,103 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 58.7MB. Free memory is still 36.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 235.61ms. Allocated memory is still 75.5MB. Free memory was 53.0MB in the beginning and 42.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 125]: 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/popl20-prod-cons-eq.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 29fee1864b0d56497c32cb33e6aaa24ed5707e21c5b89ec418c6707c5ac52336 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 07:11:12,433 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 07:11:12,435 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 07:11:12,466 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 07:11:12,467 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 07:11:12,469 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 07:11:12,471 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 07:11:12,473 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 07:11:12,475 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 07:11:12,478 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 07:11:12,478 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 07:11:12,480 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 07:11:12,480 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 07:11:12,482 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 07:11:12,482 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 07:11:12,486 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 07:11:12,487 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 07:11:12,488 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 07:11:12,489 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 07:11:12,492 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 07:11:12,497 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 07:11:12,498 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 07:11:12,499 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 07:11:12,499 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 07:11:12,504 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 07:11:12,504 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 07:11:12,504 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 07:11:12,507 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 07:11:12,507 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 07:11:12,508 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 07:11:12,508 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 07:11:12,512 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 07:11:12,513 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 07:11:12,513 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 07:11:12,514 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 07:11:12,515 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 07:11:12,515 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 07:11:12,515 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 07:11:12,515 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 07:11:12,516 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 07:11:12,516 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 07:11:12,518 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-08-30 07:11:12,542 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 07:11:12,543 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 07:11:12,543 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 07:11:12,544 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 07:11:12,544 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 07:11:12,544 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 07:11:12,545 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 07:11:12,545 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 07:11:12,545 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 07:11:12,545 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 07:11:12,546 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 07:11:12,546 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 07:11:12,546 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 07:11:12,546 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 07:11:12,546 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 07:11:12,547 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 07:11:12,547 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 07:11:12,547 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 07:11:12,547 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 07:11:12,547 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 07:11:12,547 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-08-30 07:11:12,548 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-08-30 07:11:12,548 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 07:11:12,548 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 07:11:12,548 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 07:11:12,548 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 07:11:12,548 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 07:11:12,548 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 07:11:12,549 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 07:11:12,549 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 07:11:12,549 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-08-30 07:11:12,549 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-08-30 07:11:12,549 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 07:11:12,549 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 07:11:12,550 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 07:11:12,550 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-08-30 07:11:12,550 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 07:11:12,550 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 29fee1864b0d56497c32cb33e6aaa24ed5707e21c5b89ec418c6707c5ac52336 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 07:11:12,805 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 07:11:12,825 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 07:11:12,826 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 07:11:12,827 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 07:11:12,828 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 07:11:12,829 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-prod-cons-eq.wvr.c [2023-08-30 07:11:13,796 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 07:11:14,010 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 07:11:14,010 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-prod-cons-eq.wvr.c [2023-08-30 07:11:14,019 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4a037118/cc932693f6054110ab58587dd3f25661/FLAGe1880ef03 [2023-08-30 07:11:14,031 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4a037118/cc932693f6054110ab58587dd3f25661 [2023-08-30 07:11:14,033 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 07:11:14,034 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 07:11:14,035 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 07:11:14,036 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 07:11:14,038 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 07:11:14,039 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 07:11:14" (1/1) ... [2023-08-30 07:11:14,040 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@128ccaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:11:14, skipping insertion in model container [2023-08-30 07:11:14,040 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 07:11:14" (1/1) ... [2023-08-30 07:11:14,045 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 07:11:14,079 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 07:11:14,238 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/popl20-prod-cons-eq.wvr.c[4380,4393] [2023-08-30 07:11:14,257 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 07:11:14,272 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-08-30 07:11:14,279 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 07:11:14,311 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/popl20-prod-cons-eq.wvr.c[4380,4393] [2023-08-30 07:11:14,316 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 07:11:14,325 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 07:11:14,353 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/popl20-prod-cons-eq.wvr.c[4380,4393] [2023-08-30 07:11:14,365 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 07:11:14,375 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 07:11:14,376 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 07:11:14,381 INFO L208 MainTranslator]: Completed translation [2023-08-30 07:11:14,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:11:14 WrapperNode [2023-08-30 07:11:14,381 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 07:11:14,384 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 07:11:14,384 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 07:11:14,384 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 07:11:14,389 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:11:14" (1/1) ... [2023-08-30 07:11:14,414 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:11:14" (1/1) ... [2023-08-30 07:11:14,452 INFO L138 Inliner]: procedures = 30, calls = 80, calls flagged for inlining = 26, calls inlined = 32, statements flattened = 394 [2023-08-30 07:11:14,455 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 07:11:14,456 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 07:11:14,457 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 07:11:14,457 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 07:11:14,463 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:11:14" (1/1) ... [2023-08-30 07:11:14,464 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:11:14" (1/1) ... [2023-08-30 07:11:14,475 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:11:14" (1/1) ... [2023-08-30 07:11:14,478 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:11:14" (1/1) ... [2023-08-30 07:11:14,534 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:11:14" (1/1) ... [2023-08-30 07:11:14,541 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:11:14" (1/1) ... [2023-08-30 07:11:14,548 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:11:14" (1/1) ... [2023-08-30 07:11:14,552 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:11:14" (1/1) ... [2023-08-30 07:11:14,555 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 07:11:14,556 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 07:11:14,556 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 07:11:14,556 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 07:11:14,556 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:11:14" (1/1) ... [2023-08-30 07:11:14,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 07:11:14,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 07:11:14,579 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 07:11:14,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 07:11:14,605 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 07:11:14,605 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-08-30 07:11:14,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-08-30 07:11:14,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-30 07:11:14,605 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 07:11:14,605 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-08-30 07:11:14,605 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-30 07:11:14,605 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 07:11:14,605 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 07:11:14,606 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 07:11:14,606 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 07:11:14,606 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 07:11:14,606 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 07:11:14,606 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 07:11:14,606 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 07:11:14,606 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 07:11:14,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 07:11:14,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 07:11:14,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2023-08-30 07:11:14,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 07:11:14,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-08-30 07:11:14,609 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 07:11:14,741 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 07:11:14,742 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 07:11:15,514 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 07:11:15,675 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 07:11:15,675 INFO L302 CfgBuilder]: Removed 9 assume(true) statements. [2023-08-30 07:11:15,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 07:11:15 BoogieIcfgContainer [2023-08-30 07:11:15,678 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 07:11:15,679 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 07:11:15,680 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 07:11:15,682 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 07:11:15,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 07:11:14" (1/3) ... [2023-08-30 07:11:15,682 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bf94da6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 07:11:15, skipping insertion in model container [2023-08-30 07:11:15,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:11:14" (2/3) ... [2023-08-30 07:11:15,683 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bf94da6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 07:11:15, skipping insertion in model container [2023-08-30 07:11:15,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 07:11:15" (3/3) ... [2023-08-30 07:11:15,684 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-prod-cons-eq.wvr.c [2023-08-30 07:11:15,695 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 07:11:15,696 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 58 error locations. [2023-08-30 07:11:15,696 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 07:11:15,807 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 07:11:15,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 408 places, 435 transitions, 894 flow [2023-08-30 07:11:15,935 INFO L130 PetriNetUnfolder]: 37/432 cut-off events. [2023-08-30 07:11:15,935 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 07:11:15,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 445 conditions, 432 events. 37/432 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 723 event pairs, 0 based on Foata normal form. 0/337 useless extension candidates. Maximal degree in co-relation 330. Up to 2 conditions per place. [2023-08-30 07:11:15,950 INFO L82 GeneralOperation]: Start removeDead. Operand has 408 places, 435 transitions, 894 flow [2023-08-30 07:11:15,956 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 401 places, 428 transitions, 874 flow [2023-08-30 07:11:15,960 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 07:11:15,967 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 401 places, 428 transitions, 874 flow [2023-08-30 07:11:15,969 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 401 places, 428 transitions, 874 flow [2023-08-30 07:11:15,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 401 places, 428 transitions, 874 flow [2023-08-30 07:11:16,032 INFO L130 PetriNetUnfolder]: 37/428 cut-off events. [2023-08-30 07:11:16,032 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 07:11:16,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 441 conditions, 428 events. 37/428 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 714 event pairs, 0 based on Foata normal form. 0/334 useless extension candidates. Maximal degree in co-relation 330. Up to 2 conditions per place. [2023-08-30 07:11:16,040 INFO L119 LiptonReduction]: Number of co-enabled transitions 10370 [2023-08-30 07:12:24,092 INFO L134 LiptonReduction]: Checked pairs total: 15227 [2023-08-30 07:12:24,092 INFO L136 LiptonReduction]: Total number of compositions: 510 [2023-08-30 07:12:24,102 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 07:12:24,105 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;@6b65987e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 07:12:24,106 INFO L358 AbstractCegarLoop]: Starting to check reachability of 93 error locations. [2023-08-30 07:12:24,107 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 07:12:24,108 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 07:12:24,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:12:24,108 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 07:12:24,108 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 90 more)] === [2023-08-30 07:12:24,111 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:12:24,112 INFO L85 PathProgramCache]: Analyzing trace with hash 59753, now seen corresponding path program 1 times [2023-08-30 07:12:24,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 07:12:24,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1671553532] [2023-08-30 07:12:24,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:12:24,124 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 07:12:24,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 07:12:24,126 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 07:12:24,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-08-30 07:12:24,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:12:24,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 07:12:24,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:12:24,353 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2023-08-30 07:12:24,354 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 07:12:24,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:12:24,385 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 07:12:24,385 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 07:12:24,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1671553532] [2023-08-30 07:12:24,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1671553532] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:12:24,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:12:24,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 07:12:24,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497328047] [2023-08-30 07:12:24,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:12:24,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 07:12:24,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 07:12:24,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 07:12:24,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 07:12:24,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 365 out of 945 [2023-08-30 07:12:24,620 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 92 transitions, 202 flow. Second operand has 3 states, 3 states have (on average 365.6666666666667) internal successors, (1097), 3 states have internal predecessors, (1097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:12:24,620 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:12:24,620 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 365 of 945 [2023-08-30 07:12:24,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:12:27,751 INFO L130 PetriNetUnfolder]: 15427/21602 cut-off events. [2023-08-30 07:12:27,751 INFO L131 PetriNetUnfolder]: For 124/124 co-relation queries the response was YES. [2023-08-30 07:12:27,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43548 conditions, 21602 events. 15427/21602 cut-off events. For 124/124 co-relation queries the response was YES. Maximal size of possible extension queue 4086. Compared 155646 event pairs, 14465 based on Foata normal form. 0/4370 useless extension candidates. Maximal degree in co-relation 40680. Up to 21578 conditions per place. [2023-08-30 07:12:27,854 INFO L137 encePairwiseOnDemand]: 931/945 looper letters, 76 selfloop transitions, 1 changer transitions 0/79 dead transitions. [2023-08-30 07:12:27,855 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 79 transitions, 330 flow [2023-08-30 07:12:27,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 07:12:27,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 07:12:27,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1185 transitions. [2023-08-30 07:12:27,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41798941798941797 [2023-08-30 07:12:27,871 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1185 transitions. [2023-08-30 07:12:27,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1185 transitions. [2023-08-30 07:12:27,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:12:27,875 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1185 transitions. [2023-08-30 07:12:27,880 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 395.0) internal successors, (1185), 3 states have internal predecessors, (1185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:12:27,888 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 945.0) internal successors, (3780), 4 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:12:27,890 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 945.0) internal successors, (3780), 4 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:12:27,891 INFO L175 Difference]: Start difference. First operand has 93 places, 92 transitions, 202 flow. Second operand 3 states and 1185 transitions. [2023-08-30 07:12:27,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 79 transitions, 330 flow [2023-08-30 07:12:27,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 79 transitions, 318 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-30 07:12:27,906 INFO L231 Difference]: Finished difference. Result has 76 places, 79 transitions, 166 flow [2023-08-30 07:12:27,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=945, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=166, PETRI_PLACES=76, PETRI_TRANSITIONS=79} [2023-08-30 07:12:27,911 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, -17 predicate places. [2023-08-30 07:12:27,911 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 79 transitions, 166 flow [2023-08-30 07:12:27,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 365.6666666666667) internal successors, (1097), 3 states have internal predecessors, (1097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:12:27,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:12:27,912 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 07:12:27,939 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 07:12:28,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 07:12:28,124 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 90 more)] === [2023-08-30 07:12:28,124 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:12:28,124 INFO L85 PathProgramCache]: Analyzing trace with hash 59752, now seen corresponding path program 1 times [2023-08-30 07:12:28,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 07:12:28,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1036966500] [2023-08-30 07:12:28,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:12:28,125 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 07:12:28,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 07:12:28,126 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 07:12:28,128 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-08-30 07:12:28,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:12:28,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 07:12:28,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:12:28,298 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2023-08-30 07:12:28,299 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 17 treesize of output 44 [2023-08-30 07:12:28,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:12:28,334 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 07:12:28,334 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 07:12:28,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1036966500] [2023-08-30 07:12:28,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1036966500] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:12:28,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:12:28,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 07:12:28,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10779036] [2023-08-30 07:12:28,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:12:28,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 07:12:28,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 07:12:28,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 07:12:28,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 07:12:28,723 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 363 out of 945 [2023-08-30 07:12:28,724 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 79 transitions, 166 flow. Second operand has 3 states, 3 states have (on average 363.6666666666667) internal successors, (1091), 3 states have internal predecessors, (1091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:12:28,724 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:12:28,724 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 363 of 945 [2023-08-30 07:12:28,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:12:34,414 INFO L130 PetriNetUnfolder]: 30852/43195 cut-off events. [2023-08-30 07:12:34,414 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 07:12:34,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86588 conditions, 43195 events. 30852/43195 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7258. Compared 334462 event pairs, 28930 based on Foata normal form. 0/8738 useless extension candidates. Maximal degree in co-relation 86582. Up to 21580 conditions per place. [2023-08-30 07:12:34,610 INFO L137 encePairwiseOnDemand]: 932/945 looper letters, 136 selfloop transitions, 9 changer transitions 0/147 dead transitions. [2023-08-30 07:12:34,611 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 147 transitions, 598 flow [2023-08-30 07:12:34,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 07:12:34,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 07:12:34,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1238 transitions. [2023-08-30 07:12:34,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43668430335097 [2023-08-30 07:12:34,614 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1238 transitions. [2023-08-30 07:12:34,614 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1238 transitions. [2023-08-30 07:12:34,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:12:34,615 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1238 transitions. [2023-08-30 07:12:34,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 412.6666666666667) internal successors, (1238), 3 states have internal predecessors, (1238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:12:34,621 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 945.0) internal successors, (3780), 4 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:12:34,623 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 945.0) internal successors, (3780), 4 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:12:34,623 INFO L175 Difference]: Start difference. First operand has 76 places, 79 transitions, 166 flow. Second operand 3 states and 1238 transitions. [2023-08-30 07:12:34,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 147 transitions, 598 flow [2023-08-30 07:12:34,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 147 transitions, 597 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 07:12:34,627 INFO L231 Difference]: Finished difference. Result has 79 places, 87 transitions, 241 flow [2023-08-30 07:12:34,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=945, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=241, PETRI_PLACES=79, PETRI_TRANSITIONS=87} [2023-08-30 07:12:34,629 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, -14 predicate places. [2023-08-30 07:12:34,629 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 87 transitions, 241 flow [2023-08-30 07:12:34,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 363.6666666666667) internal successors, (1091), 3 states have internal predecessors, (1091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:12:34,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:12:34,630 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 07:12:34,639 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 (3)] Ended with exit code 0 [2023-08-30 07:12:34,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 07:12:34,839 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 90 more)] === [2023-08-30 07:12:34,839 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:12:34,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1858186, now seen corresponding path program 1 times [2023-08-30 07:12:34,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 07:12:34,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [560843342] [2023-08-30 07:12:34,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:12:34,840 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 07:12:34,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 07:12:34,842 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 07:12:34,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-08-30 07:12:34,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:12:34,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-30 07:12:34,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:12:35,011 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2023-08-30 07:12:35,012 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 17 treesize of output 44 [2023-08-30 07:12:35,065 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:12:35,066 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 07:12:35,207 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:12:35,207 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 07:12:35,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [560843342] [2023-08-30 07:12:35,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [560843342] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 07:12:35,208 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 07:12:35,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-08-30 07:12:35,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743740105] [2023-08-30 07:12:35,208 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 07:12:35,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 07:12:35,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 07:12:35,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 07:12:35,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-30 07:12:36,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 343 out of 945 [2023-08-30 07:12:36,796 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 87 transitions, 241 flow. Second operand has 6 states, 6 states have (on average 344.0) internal successors, (2064), 6 states have internal predecessors, (2064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:12:36,797 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:12:36,797 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 343 of 945 [2023-08-30 07:12:36,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:12:49,691 INFO L130 PetriNetUnfolder]: 61710/86391 cut-off events. [2023-08-30 07:12:49,691 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 07:12:49,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173236 conditions, 86391 events. 61710/86391 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10913. Compared 698194 event pairs, 57860 based on Foata normal form. 0/17497 useless extension candidates. Maximal degree in co-relation 173227. Up to 21579 conditions per place. [2023-08-30 07:12:50,044 INFO L137 encePairwiseOnDemand]: 928/945 looper letters, 252 selfloop transitions, 39 changer transitions 0/293 dead transitions. [2023-08-30 07:12:50,044 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 293 transitions, 1315 flow [2023-08-30 07:12:50,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 07:12:50,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 07:12:50,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2361 transitions. [2023-08-30 07:12:50,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4164021164021164 [2023-08-30 07:12:50,049 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2361 transitions. [2023-08-30 07:12:50,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2361 transitions. [2023-08-30 07:12:50,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:12:50,051 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2361 transitions. [2023-08-30 07:12:50,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 393.5) internal successors, (2361), 6 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 07:12:50,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 945.0) internal successors, (6615), 7 states have internal predecessors, (6615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:12:50,062 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 945.0) internal successors, (6615), 7 states have internal predecessors, (6615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:12:50,062 INFO L175 Difference]: Start difference. First operand has 79 places, 87 transitions, 241 flow. Second operand 6 states and 2361 transitions. [2023-08-30 07:12:50,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 293 transitions, 1315 flow [2023-08-30 07:12:50,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 293 transitions, 1281 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 07:12:50,066 INFO L231 Difference]: Finished difference. Result has 86 places, 116 transitions, 512 flow [2023-08-30 07:12:50,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=945, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=512, PETRI_PLACES=86, PETRI_TRANSITIONS=116} [2023-08-30 07:12:50,067 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, -7 predicate places. [2023-08-30 07:12:50,067 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 116 transitions, 512 flow [2023-08-30 07:12:50,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 344.0) internal successors, (2064), 6 states have internal predecessors, (2064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:12:50,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:12:50,069 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 07:12:50,078 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-08-30 07:12:50,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 07:12:50,275 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 90 more)] === [2023-08-30 07:12:50,276 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:12:50,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1789108263, now seen corresponding path program 1 times [2023-08-30 07:12:50,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 07:12:50,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1365372274] [2023-08-30 07:12:50,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:12:50,277 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 07:12:50,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 07:12:50,278 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 07:12:50,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-08-30 07:12:50,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:12:50,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-30 07:12:50,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:12:50,368 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 0 case distinctions, treesize of input 6 treesize of output 7 [2023-08-30 07:12:50,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:12:50,372 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 07:12:50,372 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 07:12:50,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1365372274] [2023-08-30 07:12:50,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1365372274] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:12:50,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:12:50,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 07:12:50,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382621077] [2023-08-30 07:12:50,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:12:50,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 07:12:50,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 07:12:50,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 07:12:50,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 07:12:50,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 377 out of 945 [2023-08-30 07:12:50,606 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 116 transitions, 512 flow. Second operand has 3 states, 3 states have (on average 378.6666666666667) internal successors, (1136), 3 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:12:50,606 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:12:50,606 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 377 of 945 [2023-08-30 07:12:50,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:13:00,530 INFO L130 PetriNetUnfolder]: 61710/86390 cut-off events. [2023-08-30 07:13:00,530 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2023-08-30 07:13:00,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173328 conditions, 86390 events. 61710/86390 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 11180. Compared 710010 event pairs, 57860 based on Foata normal form. 0/17504 useless extension candidates. Maximal degree in co-relation 173315. Up to 86265 conditions per place. [2023-08-30 07:13:00,867 INFO L137 encePairwiseOnDemand]: 943/945 looper letters, 108 selfloop transitions, 5 changer transitions 0/115 dead transitions. [2023-08-30 07:13:00,867 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 115 transitions, 736 flow [2023-08-30 07:13:00,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 07:13:00,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 07:13:00,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1208 transitions. [2023-08-30 07:13:00,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42610229276895945 [2023-08-30 07:13:00,870 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1208 transitions. [2023-08-30 07:13:00,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1208 transitions. [2023-08-30 07:13:00,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:13:00,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1208 transitions. [2023-08-30 07:13:00,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 402.6666666666667) internal successors, (1208), 3 states have internal predecessors, (1208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:13:00,876 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 945.0) internal successors, (3780), 4 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:13:00,877 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 945.0) internal successors, (3780), 4 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:13:00,877 INFO L175 Difference]: Start difference. First operand has 86 places, 116 transitions, 512 flow. Second operand 3 states and 1208 transitions. [2023-08-30 07:13:00,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 115 transitions, 736 flow [2023-08-30 07:13:00,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 115 transitions, 689 flow, removed 15 selfloop flow, removed 1 redundant places. [2023-08-30 07:13:00,882 INFO L231 Difference]: Finished difference. Result has 86 places, 115 transitions, 473 flow [2023-08-30 07:13:00,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=945, PETRI_DIFFERENCE_MINUEND_FLOW=463, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=473, PETRI_PLACES=86, PETRI_TRANSITIONS=115} [2023-08-30 07:13:00,883 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, -7 predicate places. [2023-08-30 07:13:00,883 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 115 transitions, 473 flow [2023-08-30 07:13:00,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 378.6666666666667) internal successors, (1136), 3 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:13:00,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:13:00,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 07:13:00,892 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-08-30 07:13:01,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 07:13:01,091 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 90 more)] === [2023-08-30 07:13:01,091 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:13:01,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1789108264, now seen corresponding path program 1 times [2023-08-30 07:13:01,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 07:13:01,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [271069723] [2023-08-30 07:13:01,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:13:01,092 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 07:13:01,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 07:13:01,094 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 07:13:01,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-08-30 07:13:01,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:13:01,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-30 07:13:01,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:13:01,211 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 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-30 07:13:01,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:13:01,225 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 07:13:01,225 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 07:13:01,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [271069723] [2023-08-30 07:13:01,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [271069723] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:13:01,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:13:01,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 07:13:01,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77545523] [2023-08-30 07:13:01,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:13:01,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 07:13:01,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 07:13:01,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 07:13:01,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 07:13:01,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 370 out of 945 [2023-08-30 07:13:01,716 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 115 transitions, 473 flow. Second operand has 4 states, 4 states have (on average 371.25) internal successors, (1485), 4 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:13:01,716 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:13:01,716 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 370 of 945 [2023-08-30 07:13:01,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:13:11,553 INFO L130 PetriNetUnfolder]: 61711/86392 cut-off events. [2023-08-30 07:13:11,553 INFO L131 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2023-08-30 07:13:11,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173313 conditions, 86392 events. 61711/86392 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 11292. Compared 710177 event pairs, 57860 based on Foata normal form. 0/17507 useless extension candidates. Maximal degree in co-relation 173300. Up to 86284 conditions per place. [2023-08-30 07:13:11,910 INFO L137 encePairwiseOnDemand]: 940/945 looper letters, 103 selfloop transitions, 12 changer transitions 0/117 dead transitions. [2023-08-30 07:13:11,911 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 117 transitions, 711 flow [2023-08-30 07:13:11,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 07:13:11,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 07:13:11,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1559 transitions. [2023-08-30 07:13:11,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41243386243386243 [2023-08-30 07:13:11,914 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1559 transitions. [2023-08-30 07:13:11,914 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1559 transitions. [2023-08-30 07:13:11,915 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:13:11,915 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1559 transitions. [2023-08-30 07:13:11,917 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 389.75) internal successors, (1559), 4 states have internal predecessors, (1559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:13:11,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 945.0) internal successors, (4725), 5 states have internal predecessors, (4725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:13:11,922 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 945.0) internal successors, (4725), 5 states have internal predecessors, (4725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:13:11,923 INFO L175 Difference]: Start difference. First operand has 86 places, 115 transitions, 473 flow. Second operand 4 states and 1559 transitions. [2023-08-30 07:13:11,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 117 transitions, 711 flow [2023-08-30 07:13:11,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 117 transitions, 706 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 07:13:11,925 INFO L231 Difference]: Finished difference. Result has 89 places, 117 transitions, 513 flow [2023-08-30 07:13:11,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=945, PETRI_DIFFERENCE_MINUEND_FLOW=468, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=513, PETRI_PLACES=89, PETRI_TRANSITIONS=117} [2023-08-30 07:13:11,926 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, -4 predicate places. [2023-08-30 07:13:11,926 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 117 transitions, 513 flow [2023-08-30 07:13:11,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 371.25) internal successors, (1485), 4 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:13:11,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:13:11,927 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 07:13:11,938 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-08-30 07:13:12,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 07:13:12,138 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 90 more)] === [2023-08-30 07:13:12,138 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:13:12,139 INFO L85 PathProgramCache]: Analyzing trace with hash -471522840, now seen corresponding path program 2 times [2023-08-30 07:13:12,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 07:13:12,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2064261596] [2023-08-30 07:13:12,140 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 07:13:12,140 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 07:13:12,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 07:13:12,141 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 07:13:12,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-08-30 07:13:12,238 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 07:13:12,238 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 07:13:12,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-30 07:13:12,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:13:12,318 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2023-08-30 07:13:12,318 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 17 treesize of output 44 [2023-08-30 07:13:12,435 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:13:12,435 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 07:13:12,952 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:13:12,953 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 07:13:12,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2064261596] [2023-08-30 07:13:12,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2064261596] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 07:13:12,953 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-30 07:13:12,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2023-08-30 07:13:12,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406177889] [2023-08-30 07:13:12,953 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-30 07:13:12,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 07:13:12,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 07:13:12,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 07:13:12,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-08-30 07:13:20,930 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 347 out of 945 [2023-08-30 07:13:20,933 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 117 transitions, 513 flow. Second operand has 12 states, 12 states have (on average 348.0) internal successors, (4176), 12 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:13:20,934 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:13:20,934 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 347 of 945 [2023-08-30 07:13:20,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:13:24,792 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 07:13:25,914 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 07:13:26,967 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 07:13:30,012 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 07:13:31,351 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 07:13:33,078 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 07:13:35,296 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 07:13:36,569 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 07:13:39,689 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 07:13:40,805 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 07:13:42,281 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 07:13:47,875 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 07:13:48,971 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 07:13:53,244 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-30 07:14:27,661 INFO L130 PetriNetUnfolder]: 169682/237538 cut-off events. [2023-08-30 07:14:27,661 INFO L131 PetriNetUnfolder]: For 125/125 co-relation queries the response was YES. [2023-08-30 07:14:28,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 476471 conditions, 237538 events. 169682/237538 cut-off events. For 125/125 co-relation queries the response was YES. Maximal size of possible extension queue 13852. Compared 2004971 event pairs, 159115 based on Foata normal form. 24/48133 useless extension candidates. Maximal degree in co-relation 476457. Up to 21595 conditions per place. [2023-08-30 07:14:28,721 INFO L137 encePairwiseOnDemand]: 928/945 looper letters, 675 selfloop transitions, 88 changer transitions 0/765 dead transitions. [2023-08-30 07:14:28,721 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 765 transitions, 3755 flow [2023-08-30 07:14:28,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 07:14:28,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 07:14:28,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 4947 transitions. [2023-08-30 07:14:28,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43624338624338627 [2023-08-30 07:14:28,730 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 4947 transitions. [2023-08-30 07:14:28,730 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 4947 transitions. [2023-08-30 07:14:28,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:14:28,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 4947 transitions. [2023-08-30 07:14:28,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 412.25) internal successors, (4947), 12 states have internal predecessors, (4947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:14:28,747 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 945.0) internal successors, (12285), 13 states have internal predecessors, (12285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:14:28,749 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 945.0) internal successors, (12285), 13 states have internal predecessors, (12285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:14:28,749 INFO L175 Difference]: Start difference. First operand has 89 places, 117 transitions, 513 flow. Second operand 12 states and 4947 transitions. [2023-08-30 07:14:28,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 765 transitions, 3755 flow [2023-08-30 07:14:28,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 765 transitions, 3714 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-30 07:14:28,757 INFO L231 Difference]: Finished difference. Result has 105 places, 171 transitions, 1196 flow [2023-08-30 07:14:28,757 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=945, PETRI_DIFFERENCE_MINUEND_FLOW=494, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1196, PETRI_PLACES=105, PETRI_TRANSITIONS=171} [2023-08-30 07:14:28,757 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, 12 predicate places. [2023-08-30 07:14:28,758 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 171 transitions, 1196 flow [2023-08-30 07:14:28,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 348.0) internal successors, (4176), 12 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:14:28,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:14:28,759 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 07:14:28,767 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 (7)] Ended with exit code 0 [2023-08-30 07:14:28,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 07:14:28,967 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 90 more)] === [2023-08-30 07:14:28,968 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:14:28,968 INFO L85 PathProgramCache]: Analyzing trace with hash -372211571, now seen corresponding path program 1 times [2023-08-30 07:14:28,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 07:14:28,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [340592974] [2023-08-30 07:14:28,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:14:28,968 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 07:14:28,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 07:14:28,969 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 07:14:28,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-08-30 07:14:29,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:14:29,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-30 07:14:29,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:14:29,087 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 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-30 07:14:29,103 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:14:29,104 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 07:14:29,104 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 07:14:29,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [340592974] [2023-08-30 07:14:29,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [340592974] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:14:29,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:14:29,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 07:14:29,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089098591] [2023-08-30 07:14:29,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:14:29,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 07:14:29,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 07:14:29,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 07:14:29,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 07:14:29,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 352 out of 945 [2023-08-30 07:14:29,653 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 171 transitions, 1196 flow. Second operand has 5 states, 5 states have (on average 353.2) internal successors, (1766), 5 states have internal predecessors, (1766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:14:29,653 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:14:29,653 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 352 of 945 [2023-08-30 07:14:29,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:15:12,629 INFO L130 PetriNetUnfolder]: 263283/370961 cut-off events. [2023-08-30 07:15:12,629 INFO L131 PetriNetUnfolder]: For 305/305 co-relation queries the response was YES. [2023-08-30 07:15:13,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 744694 conditions, 370961 events. 263283/370961 cut-off events. For 305/305 co-relation queries the response was YES. Maximal size of possible extension queue 20259. Compared 3355843 event pairs, 248974 based on Foata normal form. 2/79855 useless extension candidates. Maximal degree in co-relation 744672. Up to 237263 conditions per place. [2023-08-30 07:15:14,913 INFO L137 encePairwiseOnDemand]: 932/945 looper letters, 253 selfloop transitions, 26 changer transitions 0/281 dead transitions. [2023-08-30 07:15:14,913 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 281 transitions, 2460 flow [2023-08-30 07:15:14,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 07:15:14,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 07:15:14,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1906 transitions. [2023-08-30 07:15:14,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4033862433862434 [2023-08-30 07:15:14,917 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1906 transitions. [2023-08-30 07:15:14,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1906 transitions. [2023-08-30 07:15:14,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:15:14,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1906 transitions. [2023-08-30 07:15:14,920 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 381.2) internal successors, (1906), 5 states have internal predecessors, (1906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:15:14,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 945.0) internal successors, (5670), 6 states have internal predecessors, (5670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:15:14,924 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 945.0) internal successors, (5670), 6 states have internal predecessors, (5670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:15:14,924 INFO L175 Difference]: Start difference. First operand has 105 places, 171 transitions, 1196 flow. Second operand 5 states and 1906 transitions. [2023-08-30 07:15:14,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 281 transitions, 2460 flow [2023-08-30 07:15:14,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 281 transitions, 2281 flow, removed 56 selfloop flow, removed 2 redundant places. [2023-08-30 07:15:14,931 INFO L231 Difference]: Finished difference. Result has 109 places, 184 transitions, 1356 flow [2023-08-30 07:15:14,932 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=945, PETRI_DIFFERENCE_MINUEND_FLOW=1078, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1356, PETRI_PLACES=109, PETRI_TRANSITIONS=184} [2023-08-30 07:15:14,932 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, 16 predicate places. [2023-08-30 07:15:14,932 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 184 transitions, 1356 flow [2023-08-30 07:15:14,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 353.2) internal successors, (1766), 5 states have internal predecessors, (1766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:15:14,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:15:14,933 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 07:15:14,942 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 (8)] Ended with exit code 0 [2023-08-30 07:15:15,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 07:15:15,140 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 90 more)] === [2023-08-30 07:15:15,140 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:15:15,140 INFO L85 PathProgramCache]: Analyzing trace with hash -372209673, now seen corresponding path program 1 times [2023-08-30 07:15:15,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 07:15:15,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [549952161] [2023-08-30 07:15:15,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:15:15,141 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 07:15:15,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 07:15:15,141 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 07:15:15,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-08-30 07:15:15,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:15:15,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-30 07:15:15,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:15:15,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 07:15:15,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 07:15:15,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 07:15:15,327 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2023-08-30 07:15:15,327 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 2 case distinctions, treesize of input 15 treesize of output 32 [2023-08-30 07:15:15,355 INFO L321 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2023-08-30 07:15:15,355 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 90 treesize of output 89 [2023-08-30 07:15:15,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 07:15:15,393 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 14 [2023-08-30 07:15:15,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 07:15:15,411 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 14 [2023-08-30 07:15:15,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 07:15:15,436 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 14 [2023-08-30 07:15:15,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 07:15:15,451 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 14 [2023-08-30 07:15:15,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:15:15,478 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 07:15:15,478 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 07:15:15,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [549952161] [2023-08-30 07:15:15,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [549952161] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:15:15,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:15:15,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 07:15:15,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392070115] [2023-08-30 07:15:15,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:15:15,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 07:15:15,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 07:15:15,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 07:15:15,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 07:15:15,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 373 out of 945 [2023-08-30 07:15:15,992 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 184 transitions, 1356 flow. Second operand has 4 states, 4 states have (on average 374.5) internal successors, (1498), 4 states have internal predecessors, (1498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:15:15,992 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:15:15,992 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 373 of 945 [2023-08-30 07:15:15,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 07:15:50,914 INFO L130 PetriNetUnfolder]: 200209/285689 cut-off events. [2023-08-30 07:15:50,914 INFO L131 PetriNetUnfolder]: For 6462/6462 co-relation queries the response was YES. [2023-08-30 07:15:51,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 602132 conditions, 285689 events. 200209/285689 cut-off events. For 6462/6462 co-relation queries the response was YES. Maximal size of possible extension queue 15552. Compared 2600656 event pairs, 189068 based on Foata normal form. 0/77281 useless extension candidates. Maximal degree in co-relation 602108. Up to 285205 conditions per place. [2023-08-30 07:15:52,776 INFO L137 encePairwiseOnDemand]: 942/945 looper letters, 179 selfloop transitions, 1 changer transitions 0/182 dead transitions. [2023-08-30 07:15:52,777 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 182 transitions, 1712 flow [2023-08-30 07:15:52,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 07:15:52,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 07:15:52,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1195 transitions. [2023-08-30 07:15:52,779 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42151675485008816 [2023-08-30 07:15:52,779 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1195 transitions. [2023-08-30 07:15:52,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1195 transitions. [2023-08-30 07:15:52,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 07:15:52,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1195 transitions. [2023-08-30 07:15:52,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 398.3333333333333) internal successors, (1195), 3 states have internal predecessors, (1195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:15:52,784 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 945.0) internal successors, (3780), 4 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:15:52,784 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 945.0) internal successors, (3780), 4 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:15:52,784 INFO L175 Difference]: Start difference. First operand has 109 places, 184 transitions, 1356 flow. Second operand 3 states and 1195 transitions. [2023-08-30 07:15:52,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 182 transitions, 1712 flow [2023-08-30 07:15:52,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 182 transitions, 1696 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-30 07:15:52,812 INFO L231 Difference]: Finished difference. Result has 108 places, 182 transitions, 1338 flow [2023-08-30 07:15:52,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=945, PETRI_DIFFERENCE_MINUEND_FLOW=1336, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1338, PETRI_PLACES=108, PETRI_TRANSITIONS=182} [2023-08-30 07:15:52,814 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, 15 predicate places. [2023-08-30 07:15:52,814 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 182 transitions, 1338 flow [2023-08-30 07:15:52,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 374.5) internal successors, (1498), 4 states have internal predecessors, (1498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:15:52,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 07:15:52,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 07:15:52,822 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-08-30 07:15:53,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 07:15:53,022 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 90 more)] === [2023-08-30 07:15:53,023 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 07:15:53,023 INFO L85 PathProgramCache]: Analyzing trace with hash -372209672, now seen corresponding path program 1 times [2023-08-30 07:15:53,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-30 07:15:53,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1717033123] [2023-08-30 07:15:53,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 07:15:53,024 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-08-30 07:15:53,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-30 07:15:53,025 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-08-30 07:15:53,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-08-30 07:15:53,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 07:15:53,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 26 conjunts are in the unsatisfiable core [2023-08-30 07:15:53,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 07:15:53,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 07:15:53,220 INFO L321 Elim1Store]: treesize reduction 94, result has 19.0 percent of original size [2023-08-30 07:15:53,220 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 47 [2023-08-30 07:15:53,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 07:15:53,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 07:15:53,361 INFO L321 Elim1Store]: treesize reduction 86, result has 28.3 percent of original size [2023-08-30 07:15:53,361 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 40 treesize of output 71 [2023-08-30 07:15:53,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 07:15:53,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 07:15:53,560 INFO L321 Elim1Store]: treesize reduction 56, result has 37.8 percent of original size [2023-08-30 07:15:53,560 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 35 treesize of output 68 [2023-08-30 07:15:54,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 07:15:54,957 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2023-08-30 07:15:54,957 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 36 [2023-08-30 07:15:55,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 07:15:55,274 INFO L321 Elim1Store]: treesize reduction 23, result has 32.4 percent of original size [2023-08-30 07:15:55,274 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 67 treesize of output 82 [2023-08-30 07:16:04,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 07:16:04,882 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 07:16:04,882 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-30 07:16:04,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1717033123] [2023-08-30 07:16:04,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1717033123] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 07:16:04,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 07:16:04,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 07:16:04,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170324435] [2023-08-30 07:16:04,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 07:16:04,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 07:16:04,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-30 07:16:04,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 07:16:04,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=26, Unknown=1, NotChecked=0, Total=42 [2023-08-30 07:16:06,855 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 07:16:08,383 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 07:16:12,043 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 07:16:15,598 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 07:16:26,763 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 07:16:29,324 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 07:16:31,515 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 07:16:35,796 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 07:16:38,534 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 07:16:40,691 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-30 07:16:45,936 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 [0] [2023-08-30 07:16:49,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 319 out of 945 [2023-08-30 07:16:49,277 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 182 transitions, 1338 flow. Second operand has 7 states, 7 states have (on average 319.85714285714283) internal successors, (2239), 7 states have internal predecessors, (2239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 07:16:49,277 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 07:16:49,277 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 319 of 945 [2023-08-30 07:16:49,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand